2006 toyota tacoma system circuits
TRANSCRIPT
62
TOYOTA TACOMA (EM01D0U)
H SYSTEM CIRCUITS
2006 TOYOTA TACOMAELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITSPage
ABS (w/ VSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172ABS (w/o VSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182Accessory Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268Audio System (Built–in Type Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260Audio System (Separate Type Amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256Auto LSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Automatic Glare–Resistant EC Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262Cruise Control (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158Cruise Control (2TR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202Downhill Assist Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Electronically Controlled Transmission and A/T Indicator (1GR–FE) . . . . 144Electronically Controlled Transmission and A/T Indicator (2TR–FE) . . . . . 152Engine Control (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78Engine Control (2TR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Engine Immobiliser System (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Engine Immobiliser System (2TR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106Front Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Hill–Start Assist Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142Light Auto Turn Off System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138Multi Mode 4WD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212Multiplex Communication System (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170Power Outlet (115V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240Power Outlet (12V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196Rear Differential Lock (2WD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218Rear Differential Lock (4WD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
TOYOTA TACOMA (EM01D0U)
63
H
Page
Tire Pressure Warning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Wiper and Washer (w/ INT Time SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222Wiper and Washer (w/o INT Time SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
64
TOYOTA TACOMA (EM01D0U)
Power Source
7. 5A OBD
2 1
B–L(∗3)
GR2
2
2
1
12
10A STOP
2L–Y
10A RADIO NO. 1
2
2
21
20A EFI
30A TOWING TAIL
2 1
1
2
2
7. 5A DOME
21
30A BATT CHG
B–Y2
WShort Pin
30A TOWING
W(∗4, ∗7)
2
R
W–L
R
W–R
R
50A J/B
2
2
1 L2
50A HEATER
2
2
2
2
2
2
2
R(∗5)
W–L
B
B
Bat
tery
B–R
W–R
30A AM2
15A A/F HEATER
140A ALT (∗1)120A ALT (∗2)
30A TOWING BRK
50A AM1
30A ABS NO. 2
1 2
1 2
1 2
1 2
1 2
1
1 2
1 2
L
L
Y
G–W
10A ETCS
2 12
LG
15A TRN–HAZ
2 12
B–Y
30A RADIO NO. 2
2 12
W–L
7. 5A ALT–S
2 12
W
10A HORN
2 12
W–G
50A ABS NO. 1
2 12
12
R
7. 5A ECU–B
2
R
2
5
1
3
HEAD Relay
2C1
2E1
100A AC SKT
2 12D1B
L
W
R(∗6)
L
15A FR FOG
2 12
G
Y(∗6)2
2F2
2F1B(∗5)
B(∗5)
50A A/PMP
2 12
W
A1 (∗3)B1 (∗4)
B
(∗7)C1
Gen
erat
orG
1( A
) , ( B
) , ( C
)
TOYOTA TACOMA (EM01D0U)
65
9
2
7ST2
Y–B2
2
2
2
7. 5A GAUGE
∗ 3 : 1GR–FE 130A Type Alternator
B–W
L
1B
2
W–R
W–L
R
10A A/C
1
L
2
2
2
2
1A5
1A4
G–B
G–Y
2
2
2
2
2
2
LG Y
B–Y
W–B
L–Y4
5
2
1
6AM2
AM1
ACC
IG1
ST1
IG2
R–B
P
R–W
DIM Relay
R–Y
R–B
W
W
R–B
HEATER Relay
2
10A WSH
10A IG1 NO. 2
20A 4WD
30A WIP
10A IG1
7. 5A ACC
I 7
2
221
2
2
2
15A IGN
2
3
1
5
4
1 22
3
1
1
R
∗ 4 : 1GR–FE 80A Type Alternator
4
5
2
3
1
1A6
R
10A TAILTAIL Relay
P/W Relay
20A D RR P/W
20A P FR P/W
20A P RR P/W
3
1
5
2
20A DR LCK
15A PWR OUTLET
3
1
5
2
2
7. 5A STA
2V21
B–R
W–G
5
1
3
2
2
2
2
2W–BG–W
EFI Relay
2 2L–WB 21
BB–W
B–R
∗ 5 : w/ VSC∗ 6 : w/o VSC
Ignition SW
1
30A D FR P/W
2
∗ 2 : w/o Trailer Towing∗ 1 : w/ Trailer Towing
∗ 7 : 2TR–FE
10A EFI NO. 2
10A HEAD (HI LH)
10A HEAD (HI RH)
10A HEAD (LO LH)
10A HEAD (LO RH)
66
TOYOTA TACOMA (EM01D0U)
Power Source
: Parts Location
Code See Page Code See Page Code See Page
G1A 40 (1GR–FE) G1 C 42 (2TR–FE)
G1B 40 (1GR–FE) I7 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
2C24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2D24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2E24 (1GR–FE) Engine No.2 Wire and Engine Room J/B (Engine Compartment Left)
2E24 (2TR–FE) Engine Wire and Engine Room J/B (Engine Compartment Left)
2F 25 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
TOYOTA TACOMA (EM01D0U)
67
Memo
68
TOYOTA TACOMA (EM01D0U)
Starting
ST2
IG2
ST1
IG1
ACC
AM1
AM2
7
W–R
3
1
5
4
11
50A
AM
1
2
( ∗5)
2
( ∗4)
2C1
30A
AM
2
MC1
3 2
5 1
2
( A/T
)
2
( M/T
)
2
( ∗4)
2( ∗
5)
EB16
26 2A
2A33
EA EB
2A8 2B5
2B4 2A7
C11
IH111
I 7
Battery
S 5(A), (B), S 6(C)
IH17
V(∗3 A/T)
V(∗4 A/T)
B–W
(∗4)(∗3)8 B
NSW
B–Y
B–Y
B–Y
B–Y
B–Y
W–B
W–B
30
W–B
L–Y
W–B
B–Y(M/T)
Y–G
B–Y(A/T)
B–Y(∗5)
W–B
Y–GSTA
B
E 5(
B), E
6( C
) , E
8(D
)
G–B
W–L
B–Y
B–R
B–Y
(∗4)
B–Y
(∗3)
1
( ∗3)
2
D
2 2
12
D
STARelay
B–W
L–Y
Ignition SW
Eng
ine
Con
trol M
odul
e
Starter
B1 (∗4)A1 (∗3)
140A
ALT
(∗1
)12
0A A
LT (
∗2)
TOYOTA TACOMA (EM01D0U)
69
∗ 3 : 1GR–FE∗ 4 : 2TR–FE∗ 5 : 4WD M/T
E
IG
D 6
DD4
( M/T
)( M
/T)
( A/T
)
+S
2
C 7
DD12
1
(M/T)
2
1
7. 5ASTA
2
2
2B3
2A6
2A5
2
1
PB18 PA11 PD3
PB9
V(∗3 A/T)
V(∗4 A/T)
P
N
4
5
L B
( ∗5)
( ∗5)
( ∗3
A/T
)
( ∗4
A/T
)
(∗5)
32
14
10AIG1NO. 2
1A4
1C14
DC13
DB15
IC
A20
B15
( ∗5)
( ∗5)
J 4(A), J 5(B)
–S
( M/T
)
B–W
L–Y
B–Y(∗5)
B–Y(A/T)
B–Y(M/T)
L–Y
( ∗5)
V LGLG
( A/T
)
L–B
B–Y
VV
L–B
V V
W–B
B–Y
W–B
B–Y
V
V
C 8
P 1
Clu
tch
Sta
rt S
W
Diode(Clutch Start)
Par
k/N
eutra
lP
ositi
on S
W
Clutch Start Cancel SW
JunctionConnector
∗ 2 : w/o Trailer Towing∗ 1 : w/ Trailer Towing
70
TOYOTA TACOMA (EM01D0U)
Starting
: Parts Location
Code See Page Code See Page Code See Page
C7 44 E8 D 44 P1 43 (2TR–FE)
C8 44 I7 45S5
A 41 (1GR–FE)
D6 44 J4 A 45S5
B 43 (2TR–FE)
E5 B 44 J5 B 45S6 C
41 (1GR–FE)
E6 C 44 P1 41 (1GR–FE)S6 C
43 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B and
2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
DB 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PD 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EB152 (1GR–FE)
Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)EB153 (2TR–FE)
Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IC 54 Instrument Panel Brace RH
TOYOTA TACOMA (EM01D0U)
71
Memo
72
TOYOTA TACOMA (EM01D0U)
Ignition
ST2
IG2AM2 65
I 7
1
30AAM2
2
2C1
1B9
1B10
EA14
2
1
ED
4 224
EEEH
24
313131
B–R B–R B–R B–R
W–R
W–R
W–R
W–BW–B
E 4(A)
(2TR–FE)
( 1G
R–F
E)
W–B
( 1G
R–F
E)
( 2TR
–FE
)
Battery
IGT3IGT2IGT1
GND IGF GND IGF GND IGF
B–R
B–R
W–R
B
B–R
I 2
B–R
B–R P
B–R P–L
B–R
N 1
LG
2
P P–L LG
IGT3+BIGT2+B
W–R
W–B
IGT1
W–R
W–B
+B
W–R
W–B
W–B
W–B
W–B
I 1 I 3
Ignition SW
Engine Control Module
Igni
tion
Coi
l( N
o. 1
)
Igni
tion
Coi
l( N
o. 2
)
Igni
tion
Coi
l( N
o. 3
)Noi
se F
ilter
( Igni
tion)
EC
W–B
A8A17
A9A16
(1GR–FE)A10(2TR–FE)A15
TOYOTA TACOMA (EM01D0U)
73
4 2 4 22 4
313131
910
11
12
13
5 4
B–R
W–R
W–R
W–R
( 1G
R–F
E)
W–B
( 1G
R–F
E)
( 1G
R–F
E)
B–R
( 1G
R–F
E)
W–R(1GR–FE)
W–R
E 4(A)
W–R
W–R
W–R
W–B
IGF1IGT6IGT5IGT4
GND IGF GND IGF GND IGF
J12
( 1G
R–F
E)
( 1G
R–F
E)
( 1G
R–F
E)
B–R
IGT6
LG–B
( 1G
R–F
E)
B–R
+B
GR
B–R
IGT5
G
+BIGT4
LG–B
GR
+B
G
W–R
W–R
W–B
W–R
W–B
W–R
W–R
W–B
( 1G
R–F
E)
( 1G
R–F
E)
I 4 I 5 I 6
Engine Control Module
Igni
tion
Coi
l( N
o. 4
)
Igni
tion
Coi
l( N
o. 5
)
Igni
tion
Coi
l( N
o. 6
)
JunctionConnector
(1GR–FE)
(1GR–FE)
(1GR–FE)A24(2TR–FE)A23
A13A12A11A14
74
TOYOTA TACOMA (EM01D0U)
Ignition
: Parts Location
Code See Page Code See Page Code See Page
E4 A 44I3
41 (1GR–FE) I6 41 (1GR–FE)
I141 (1GR–FE)
I343 (2TR–FE) I7 45
I143 (2TR–FE)
I441 (1GR–FE) J12 45
I241 (1GR–FE)
I443 (2TR–FE)
N141 (1GR–FE)
I243 (2TR–FE) I5 41 (1GR–FE)
N143 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA152 (1GR–FE)
Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)EA153 (2TR–FE)
Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
: Ground Points
Code See Page Ground Points Location
EC 52 (1GR–FE) Near the Front Differential
ED52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EE52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EH 53 (2TR–FE) Rear Side of Cylinder Block
TOYOTA TACOMA (EM01D0U)
75
Memo
76
TOYOTA TACOMA (EM01D0U)
Charging
L
B–L
( ∗5)
3 1J
7. 5AGAUGE
W( ∗
4, ∗
6)
10AIG1NO. 2
1C14
P
LG
10AIG1
1J9
21
16
DB12
2
DB1
GR
( ∗4)
DB11
11 EA1
DD14 DC4 PA15
GR
2
GR
DC13
5 EB1
PF7
D4 D2 D1
L IG B
IC Regulator
S
G 1(A), (B), (C), G 2(D)
( ∗4)
GR
1
B
W
EB1
W
2E1
2
18( ∗
3)
10
( ∗4)
M
3 D
2
( ∗3)
LG
7. 5
A A
LT–S
( ∗4)
P
1
V
W
L
W
W( ∗
3)
ALT
W( ∗
4)
W( ∗
4, ∗
6)
IH12
( ∗4)
( ∗3)
( ∗3)
EB13
GR
( ∗3)
GR
( ∗4)
LG ( ∗3)
( ∗3)
( ∗4)
B–L
( ∗5)
Battery
∗ 6 : 1GR–FE 80A Type Alternator∗ 5 : 1GR–FE 130A Type Alternator
B 5
E 4
2C1
Generator
Engine ControlModule
Body ECU
∗ 4 : 2TR–FE∗ 3 : 1GR–FE∗ 2 : w/o Trailer Towing∗ 1 : w/ Trailer Towing
Com
bina
tion
Met
erC
9
(IG)(IG)(IG)
C1 (∗4)B1 (∗6)A1 (∗5)
140A
ALT
(∗1
)12
0A A
LT (
∗2)
Cha
rge
TOYOTA TACOMA (EM01D0U)
77
: Parts Location
Code See Page Code See Page Code See Page
B5 44
G1
A 40 (1GR–FE)G2 D
40 (1GR–FE)
C9 44 G1 B 40 (1GR–FE)G2 D
42 (2TR–FE)
E4 44
G1
C 42 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2E24 (1GR–FE) Engine No.2 Wire and Engine Room J/B (Engine Compartment Left)
2E24 (2TR–FE) Engine Wire and Engine Room J/B (Engine Compartment Left)
DB 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 53 (2TR–FE) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
EB1 52 (1GR–FE) Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
78
TOYOTA TACOMA (EM01D0U)
Engine Control for 1GR–FE
2
2
20AEFI
2
3 2
5 1
2
L
2
B–R
2 2
2
2 2
2
3
51
15AA/FHEATER
2
2
2A302A11 2A31
2A33
2
10A
EFI
NO
. 2
2
EFI
Rel
ay
EBEA
2A102A9
2
3 2
5 1
2 2
2
15AIGN
1C13 1I15
IA114
I 7
L L
G–W
O
B–R
2C
B–W
L–B
B
L–W
L–W
W
L–W
B–R B OL
G–W
A/F
HE
ATE
RR
elay
C/O
PN
Rel
ay
B
O
B
L–W
B–W L–
B
W–B
W–B
W–B
W–BBB
B
W–B
W–B W
2
1
1
2
1
2
L–B
L–B
5 6AM2 IG2
ST2B
–R
BW
–R
30A
AM
2
Battery
1B9
11 1B
B–R
B–R
EA17
Ignition SW
(IG)(BAT)(BAT)
TOYOTA TACOMA (EM01D0U)
79
FUE
L P
UM
P R
elay
1 5
2 3
4
2 2
2 2
8 IB1
1
2
2
EA11
5
4
BD
8 E
IA110
3 E
IA11
FPR
C30
MREL BATT
FC
E10
1H3 1H2
1B6
+B
E1
9 E
IGSW
+B2
E2
BBL–B
Y–R
OL
G–W
B–R
O
L
G–W
B–W
L–B
B
L–W
L–W
W
F11
F19
B–W
Y–R
B–Y
B–R
B–R
B–R
W–B
W–B
7. 5ASTA
( A/T
)
2
( A/T
)
2
2A6
2A5
2B3
2
1
2
1
P
N
4( M/T
)
5
PB18
PB9
8 B
NSW
V
PA11
2B4 2B5
72A
STA
C11
B–Y
C 8
P 1
D 6
B
VV
V V
L–B
V
B–Y
( A/T
)
( A/T
)
B–Y
( M/T
)
B L
B–R
L–W
L–W
Y–R
G–W
L
W
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
Clu
tch
Sta
rt S
W
Fuel
Pum
p R
esis
tor
Dio
de( C
lutc
h S
tart)
Engine Control Module
Par
k/N
eutra
lP
ositi
on S
W
Fuel
Suc
tion
Pum
pan
d G
age
Ass
embl
y
V
(M/T)
DD4
DD12
( M/T
)
L–B
M
(ST)
M
80
TOYOTA TACOMA (EM01D0U)
Engine Control for 1GR–FE
ACIS
A33
1
2
1
2
1
2
1
2
2 C
# 10
3 C
# 20
4 C
# 30
5 C
# 40
6 C
# 50
7 C
# 60
2B8
2A18
1
2
PRG
A34
2B9
VG
A30
E2G
A29
THA
A22
2B10
2A14 2B6
2B7
2A15
HT2B
B5
OX2B
B33
L BR–L
R–WR–YY
W–L
L–W
L–W
L–W
HT2B OX2B
+B E2
2 4
1 3
L–W
BR
OX1B
A18
HT1B
A1
W G
OX1B HT1B
+B E2
2 4
3 1
L–W
BR
H 4
H 3
1
BR
V 3
W
BR
L–W
BR
( ∗1)
( ∗1)
L–W
L–W
L–W
L–W
L–W
BR
+B E2
VG E2G THA
R–L B R G Y L
B–R
B–R
B–R
B–R
B–R
B–R
P 4
M 1
( A)
V 4(
A)
F 5(
A)
F 6
F 7(
A)
F 8
F 9
F10
L–W
1
2
17 C
OC1+
G–Y
C 4
OC2+
C15
2
1
16 C
OC1–
L–B
C 3
14 C
OC2–
L–R
10 C
PSW
G–W
2
B–R
2
IA16
7 E
+BM
LGLG
B–R
L–W
L–W
B–R B–R B–R
W
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
∗ 2 : w/ VSC∗ 1 : Shielded
∗ 3 : w/o VSCV
SV
(A
CIS
)
Mas
s A
irFl
ow M
eter
Engine Control Module
VS
V (
Pur
ge)
Fuel
Inje
ctor
(N
o. 1
)
Fuel
Inje
ctor
(N
o. 2
)
Fuel
Inje
ctor
(N
o. 3
)
Fuel
Inje
ctor
(N
o. 4
)
Fuel
Inje
ctor
(N
o. 5
)
Fuel
Inje
ctor
(N
o. 6
)
Pow
er S
teer
ing
Oil
Pre
ssur
e S
W
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 2
Sen
sor
2)
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 1
Sen
sor
2)
Cam
shaf
t Tim
ing
Oil
Con
trol V
alve
(LH
)
Cam
shaf
t Tim
ing
Oil
Con
trol V
alve
(R
H)
BRBR
(BAT)
A2 A3 A2 A4
A1 A1 A5
A1A1
A2A2
10AETCS
TOYOTA TACOMA (EM01D0U)
81
R
B–W
MGND
L–WW–B
A2A+
B23
A2A–
B31
W R
A2A+ A2A–
HA2A +B
1 2
3 4
B–W W
A1A+
B22
HA1A
B2
P L
A1A+ A1A–
+B HA1A
W R
2B2
2A4 2B1
A1A–
B30
HA2A
B1
C 5
( A)
2
A 5
A 4(
A)
3
NE+
C21
NE–
C20
EE
61
MPMP
E6
IB13
9
ID29ID211
G
L–W
1G
6
W–B
BR
W–B
( ∗1) B W
BR
BR
L–W
BR7
J12
BR
W
BR
BR
BR
BR
( ∗1)
( ∗1)
W
10AIG1NO. 2
1C14
( ∗2)
(∗2)
2 3
1 5
4
2 2
222
10ASTOP
2
2
1
2
1B2
1C6
DB3
DD5
15 E
STP
L
G–W
L
L
G–W
LG
L
G–B
L
G
A12
B22
13 D
ELS
G
S10
LG
LG
(∗2)(∗2)
(∗3)
( ∗2)( ∗
2)
( ∗2)
STO
P L
P C
TRL
Rel
ay
W
L 1
MTRB VLVB
BR
BR
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
J 4(
A), J
5( B
)
Sto
p La
mp
SW
Air
Fuel
Rat
io S
enso
r( B
ank
2 S
enso
r 1)
Air
Fuel
Rat
io S
enso
r( B
ank
1 S
enso
r 1)
Engine Control Module
JunctionConnector
Cra
nksh
aft P
ositi
onS
enso
r
Junc
tion
Con
nect
or
Canister Pump Module
M
Ven
t Val
ve
(BAT)(IG)
50AJ/B
2
2
1A6
2 5
1 3
1J7
L
(BAT)
TAIL
Rel
ay
10A
TA
IL
DC13
DC12
G
A3 A4 A1
A2 A1 A2
Leak
Det
ectio
nP
ump
L
(∗2)
82
TOYOTA TACOMA (EM01D0U)
Engine Control for 1GR–FE
IF1 6 IF1
PPMP
E22
ID210
3
GR
GR
ID212
2
BR
BR
ID24
4
L
E2
A28
7
THW
A21
Y–B
VV2+
C18Y L
VVL+ VVL–
VC
3
1 2
L
VV2–
C28V
5VV1+
C19
R G
VVR+ VVR–
VC
3
1 2
L
VV1–
C29
V 6
L
VC
A23
E 2
VPMP
E5
ID23
V–W
8
V–W
W–B
BR
W–B
L
L 1
L
IGT1
8 A
IGT1
P
3
IGF
2
12
5
2
IGF
3
G
IGT6
A13
IGT6IGT5
12 A
IGT5
GR
3
IGF
22
IGF
3
LG–B
IGT4
A11
IGT4IGT3
10 A
IGT3
LG
3
IGF
22
IGF
3
P–L
IGT2
A9
IGT2
4 9 10W
–R
W–R
LG–B
W–R GR
W–R G
W–RLGW–R
P–L
W–RP
IGF1
A24
I 1 I 2 I 3 I 4 I 5 I 6
J12
1113
W–R
W–R
W–R
BR
VGND VOUTSGND VCC
BR
W–B
L
BR
BR
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)Engine Control Module
Ignition Coil(No. 1)
Ignition Coil(No. 2)
Ignition Coil(No. 3)
Ignition Coil(No. 4)
Ignition Coil(No. 5)
Ignition Coil(No. 6)
JunctionConnector
VV
T S
enso
r LH
VV
T S
enso
r R
H
Eng
ine
Coo
lant
Tem
p.
Sen
sor
Canister Pump Module
IF11
L
L L L
IF15IF12
IH15 IH14
CanisterPressure Sensor
BR
BR
BRL
W–B
L BR
L
BR
BR
2
1
TOYOTA TACOMA (EM01D0U)
83
1
M
M+VTA2VCVTA M–
G–B
VTA1
A20
G–W
VTA2
A19
P
M+
A5
L
M–
A4
( ∗1)
GE01
A17
6 5 4 2
E2
3
GKNK2
B21
EE14 EE16
EKN2
B20
EE11B
KNK1
B29
EE12 EE15
EKNK
B28
2 1 2 1
R W
BR
( ∗1)
( ∗1)
( ∗1)
( ∗1) G R B W
SEL
D26
W–B
15 B
14 B
IC
W–B
W–B
BR
L
13 IA1
LG–B
EPA
E20
LG–B
5
12 IA1
R–Y
VPA
E18
R–Y
6
11 IA1
R
VCPA
E26
R
4
7 IA1
R–B
EPA2
E21
R–B
2
8 IA1
GR
–B
VPA2
E19
GR
–B3
9 IA1
L–W
VCP2
E27
L–W
1
A19
5 II1 IJ13
25 D
ACTL
24 D
AC1
G–W
L
A14
ACT
7
AC1
9
OUT
9
GSW2
22
G–W
II110
32 D
F/PS
RR
A21
V 8
IM15
12 D
ELS2
B–W
B–W
W–B
W–B
BR
( 2W
D A
/T)
T 1
( 2W
D A
/T)
K 2
K 1
( ∗1)
BR
W–B
L
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
∗ 1 : Shielded
J 5(
B)
Accelerator Position Sensor
Engine Control Module
Throttle Body Assembly
Airb
ag S
enso
rA
ssem
bly
Cen
terA/C Amplifier
Junc
tion
Con
nect
or
Vol
tage
Inve
rter
Kno
ck C
ontro
lS
enso
r ( B
ank
2)
Kno
ck C
ontro
lS
enso
r ( B
ank
1)
IF13
IF14
EPA VPA VCPA EPA2 VPA2 VCP2
84
TOYOTA TACOMA (EM01D0U)
Engine Control for 1GR–FE
( 4W
D A
/T)
( 4W
D)
8 C
4WD
LG–B
13 C
L4
Y–B
Tran
sfer
Indi
cato
r S
W( L
4 P
ositi
on)
AD
D A
ctua
tor
Ass
embl
y
E01
A7
W–B
E02
A6
W–B
E03
B4
W–B
E04
B7
W–B
E05
B6
W–B
ME01
B3
W–B
EOM
D35
W–B
EE EF
E1
C1
BR
TACH
D1
B–W
THWO
D14
GR
–B
13
2
1
IE
BR
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
2 D1 D
2 E1 E
P–B
TC
E23
7 PE
6 PE PA18
EE IC
DA2
DB9
B
CANH
D33 34 D
CANL
W
7. 5AOBD
SG
2
CG
2
IA127
D30
W
Y–B
J 9(
D) ,
J10(
E), J
11( F
)
TCCANL CANH BAT
5 4
1314 6 16
P–B
L–W
Y–B Y
Y
W–B
W–BBR
W–B
W–B
W–B
W–B
D 4
B–W
GR–B
J14
J13
W–B
II13 II14
LG–B
IMO
D15
L–W
IMI
D16
LG–B
L–W
T10
12
EFII
13
EFIO
BR
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
V–W
V–W
SPD
D8
B–W
TAC
9
B–W
Engine Control Module Data Link Connector 3
Transponder Key ECU
Junc
tion
Con
nect
or
JunctionConnector
Junc
tion
Con
nect
or
L–W
P–B
2
F1
W–B
W–B
ST–Plug
(BAT)
PB17
PA2
PA21
PA10
LG–B
( 4W
D)
Y–B
( 4W
D A
/T)
TOYOTA TACOMA (EM01D0U)
85
7. 5AGAUGE
1J3
7. 5AECU–B
2
2
1C16
1K13
Tem
p.
Con
trol
Tach
oC
ontro
l
II19
BR
GR–B
B–W
B1 B16
A11 A18
Spe
edC
ontro
l
IA136
B18A12
10AIG1
1J9
IA
2
W–B
IH19 IH18
PF7
PA4
IG+
SP1
1
SE
2
SI
3
21 1
6 327917
BR
GR
–B
B–W
W–B
R–Y
( M/T
)
W
W R–Y
R–Y
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
Mal
func
tion
Indi
cato
r La
mp
G R L P
Y BR B O
Speed Sensor(Rear)
Speed Sensor(Front LH, RH)
S 1(
A), (
B)
P
(w/ VSC)
(w/ VSC)
(w/o VSC)
(w/o VSC)
V 1
R
( A/T
)
R P
V
( M/T
)
( M/T
)
( M/T
)( M
/T)
J 1
PC12
PD2
19
V–W
V–W
( M/T
)
R–Y
C 9
J 4(
A), J
5( B
)
A17
B–W
B–W
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Com
bina
tion
Met
er
JunctionConnector
Junc
tion
Con
nect
or
(IG)(BAT)(IG)
( A/T
)
86
TOYOTA TACOMA (EM01D0U)
Engine Control for 1GR–FE
The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outlineof the engine control is given here.
1. Input Signals(1) Engine coolant temp. signal circuit
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance whichvaries according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the enginecontrol module as a control signal.
(2) Intake air temp. signal circuitThe intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal to TERMINAL THA of the engine control module.
(3) Oxygen sensor signal circuitThe oxygen density in the exhaust emission is detected and is input as a control signal from the heated oxygen sensorsto TERMINALS OX1B and OX2B of the engine control module.
(4) RPM signal circuitThe camshaft position is detected by the VVT sensor LH and RH, and is input into TERMINALS VV1+ and VV2+ of theengine control module as a control signal. Also, the engine RPM is detected by the crankshaft position sensor and thesignal is input into TERMINAL NE+ of the engine control module.
(5) Throttle position sensor signal circuitThe throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALSVTA1 and VTA2 of the engine control module.
(6) Vehicle speed circuitThe vehicle speed sensor detects the vehicle speed, and the signal is input into TERMINAL SPD of the engine controlmodule via the combination meter, from TERMINAL SP1 of the skid control ECU with actuator. (A/T)The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input toTERMINAL SPD of the engine control module via the combination meter. (M/T)
(7) Battery signal circuitVoltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, thevoltage for engine control module start up power supply is applied through the EFI relay, to TERMINALS +B and +B2 ofthe engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine control module, andvoltage is constantly applied to TERMINAL +BM.
(8) Intake air volume signal circuitThe intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of theengine control module.
(9) Stop lamp SW signal circuitThe stop lamp SW is used to detect whether the vehicle is braking or not, and the signal is input into TERMINAL STP ofthe engine control module as a control signal.
(10)Starter signal circuitTo confirm whether the engine is cranking, the voltage applied to the starter motor when the engine is cranking isdetected, and is input into TERMINAL STA of the engine control module as a control signal.
(11) Engine knock signal circuitEngine knocking is detected by the knock sensors, and is input into TERMINALS KNK1 and KNK2 of the engine controlmodule as a control signal.
(12)A/C SW signal systemThe operating voltage of the A/C magnetic clutch is detected and input in the form of a control signal to TERMINAL AC1of the engine control module.
(13)Air fuel ratio signal circuitThe air fuel ratio is detected and input as a control signal into TERMINALS A1A+, A2A+ of the engine control module.
System Outline
TOYOTA TACOMA (EM01D0U)
87
2. Control System∗ SFI system
The SFI system monitors the engine condition through the signals input from each sensors to the engine control module.The control signal is sent to the engine control module TERMINALS #10, #20, #30, #40, #50 and #60 to operate theinjector (Fuel injection). The SFI system controls the fuel injection by the engine control module in response to the drivingconditions.
∗ ESA systemThe ESA system monitors the engine condition through the signals input from each sensors to the engine control module.The best ignition timing is decided according to this data and the data memorized in the engine control module. Thecontrol signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5 and IGT6, and these signals control the igniter toprovide the best ignition timing.
∗ Heated oxygen sensor heater control systemThe heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaustemission is low), and warms up the heated oxygen sensors to improve their detection performance. The engine controlmodule evaluates the signals from each sensors, and outputs current to TERMINALS HT1B or HT2B to control the heater.
∗ Air fuel ratio sensor heater control systemThe air fuel ratio sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaustemission is low), and warms up the air fuel ratio sensor to improve detection performance of the sensor.The engine control module evaluates the signals from each sensor, current is output to TERMINALS HA1A and HA2A,controlling the heater.
∗ Fuel pump control systemThe engine control module supplies current to TERMINAL FPR, and controls the operation speed of the fuel pump withthe FUEL PUMP relay.
∗ ACISThe ACIS includes a valve in the bulkhead separating the surge tank into two parts. This valve is opened and closed inaccordance with the driving conditions to control the intake manifold length in two stages, for increased engine output in allranges from low to high speeds.
∗ ETCS–iThe ETCS–i controls the engine output at its optimal level in accordance with the opening of the accelerator pedal, underall driving conditions.
∗ VVT–iControls the intake camshaft to an optimal valve timing in accordance with the engine condition.
3. Diagnosis SystemWhen there is a malfunction in the engine control module signal system, the malfunctioning system is recorded in thememory. The malfunctioning system can be found by reading the code displayed on the malfunction indicator lamp.
4. Fail–Safe SystemWhen a malfunction has occurred in any system, there is a possibility of causing engine trouble due to continued controlbased on that system. In that case, the fail–safe system either controls the system using the data (Standard values)recorded in the engine control module memory, or else stops the engine.
88
TOYOTA TACOMA (EM01D0U)
Engine Control for 1GR–FE
: Parts Location
Code See Page Code See Page Code See Page
A4 A 40 (1GR–FE) F9 40 (1GR–FE) J14 45
A5 40 (1GR–FE) F10 40 (1GR–FE) K1 41 (1GR–FE)
A14 44 F11 40 (1GR–FE) K2 41 (1GR–FE)
A19 44F19
46 (*1)L1
46 (*1)
A21 44F19
48 (*2)L1
48 (*2)
C3 40 (1GR–FE) H3 41 (1GR–FE) M1 A 41 (1GR–FE)
C4 40 (1GR–FE) H4 41 (1GR–FE) P1 41 (1GR–FE)
C5 A 40 (1GR–FE) I1 41 (1GR–FE) P4 41 (1GR–FE)
C8 44 I2 41 (1GR–FE)S1
A 41 (1GR–FE)
C9 44 I3 41 (1GR–FE)S1
B 41 (1GR–FE)
D4 44 I4 41 (1GR–FE) S10 45
D6 44 I5 41 (1GR–FE) T1 41 (1GR–FE)
E2 40 (1GR–FE) I6 41 (1GR–FE) T10 45
E4 A 44 I7 45 V1 41 (1GR–FE)
E5 B 44 J1 45 V3 41 (1GR–FE)
E6 C 44 J4 A 45 V4 A 41 (1GR–FE)
E7 D 44 J5 B 45 V5 41 (1GR–FE)
E8 E 44 J9 D 45 V6 41 (1GR–FE)
F5 A 40 (1GR–FE) J10 E 45V8
47 (*1)
F6 40 (1GR–FE) J11 F 45V8
48 (*2)
F7 A 40 (1GR–FE) J12 45
F8 40 (1GR–FE) J13 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C
28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
89
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 52 (1GR–FE) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
EE1 52 (1GR–FE) Engine Wire and Sensor Wire (Rear Side of Right Bank Cylinder Block)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
ID2 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IF1 55 Engine Wire and Engine Wire (Behind the Glove Box)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
IM1 55 Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)
: Ground Points
Code See Page Ground Points Location
EA 52 (1GR–FE) Front Right Fender
EB 52 (1GR–FE) Front Left Fender
EE 52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EF 52 (1GR–FE) Rear Side of Left Bank Cylinder Block
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BD56 (*1)
Near the Rear DifferentialBD57 (*2)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
90
TOYOTA TACOMA (EM01D0U)
Engine Control for 2TR–FE
2
2
20AEFI
2
3 2
5 1
2
L
2
B–R
2 2
2
2 2
2
3
51
15AA/FHEATER
2
2
2A302A11 2A31
2A33
2
10A
EFI
NO
. 2
2
EFI
Rel
ay
EBEA
2A102A9
2
3 2
5 1
2 2
2
15AIGN
1C13 1I15
2A4
1 2B
I 7
L L
G–W
O
B–R
2C
L–B
B
L–W
L–W
W
L–W
B–R B OL
G–W
A/F
HE
ATE
RR
elay
C/O
PN
Rel
ay
B
O
B
L–W
B–R L–B
W–B
W–B
W–B
W–BBB
B
W–B
W–B W
2
1
1
2
1
2 W
5 6AM2 IG2
ST2B
–R
BW
–R
30A
AM
2
Battery
1B9
11 1B
B–R
B–R
EA17
8 IB1
5
4
BD
F19
B–R
W–B
W–B
Ignition SW
Fuel
Suc
tion
Pum
pan
d G
age
Ass
embl
y
M
(IG)(BAT)(BAT)
M
TOYOTA TACOMA (EM01D0U)
91
B–Y
G–W
A 9
+B
W
A 6(A), A 7(B)
A10
W
2
W–B
L
V(A/T)
O
W–B
W–B
W–B
R–WY–R
G–R
W–B
L–R
W–B
R–W
Y–R
G–R
B–Y
L–W
B
B
L–B
R–WY–R
G–R
L–W 8
EIVEIPDIBATT
EA1
VVEVB
2 EA1
5 B
EA
2
1
1 B2 A
1 A
52B
2 B
B–R
O
L
G–W
L–B
B
L–W
L–W
W
50AA/PMP
2
7. 5ASTA
2
( A/T
)
2
2A6
2A5
2B3
2
1
2
1
P
N
4( M/T
)
5
PB18
PB9
PD3
2B4
72A
C 8
P 1
D 6
VV
V V
L–B
V
B–Y
( A/T
)
( A/T
)
6 EA1
3 B4 B
2
1
B–Y
( M/T
)
B L
B–R
L–W
L–W
L–R
6 B
9 EA1
W
Clu
tch
Sta
rt S
W
Air Injection Control Driver
Air
Pum
p
Dio
de( C
lutc
h S
tart)
Air
Sw
itchi
ngV
alve
Par
k/N
eutra
lP
ositi
on S
W
V
(M/T)
DD4
DD12
( M/T
)
L–B
M
(BAT)(ST)
M
92
TOYOTA TACOMA (EM01D0U)
Engine Control for 2TR–FE
8 D
IA110
3 D
IA11
MREL BATT
FC
D25
1H3
1B6
+B
D1
G–W
9 D
IGSW
2
1
2
1
6 B
# 10
5 B
# 20
2 B
# 30
1 B
# 40
W–B
2A13
L
B
PRG
B23
2B9
VG
B28
E2G
B30
THA
B29
2B10
2A18 2B6
V(A/T)
2A15
R–L
R–WR–YY
O
L–W
L–W
R–W
Y–R
G–R
B–Y
L–W
B 14 2A
L–B
G–R
20 B
AIDIAIRP
A11
Y–R
R–W
24 A
AIRV
W
W–B
BR
L–W
L–W
L–W
L–W
L–W
BR
+B E2
VG E2G THA
BL–B
R–LOL
G–W B R G
B–R
B–R
B–R
B–R
M 1
( B)
V 4(
B)
F 5(
B)
F 6
F 7(
B)
F 8 2
1
13 A
OC1+
L–W
C 2
12 A
OC1–
W( A/T
)
30 D
NSW
V
STA
D12
B–Y
10AETCS
2
B–R
2
IA16
7 D
+BM
LGLG
B–R
L–W
L–W
B–R
W
E 4(A), E 5(B), E 7(C), E 8(D)
∗ 1 : Shielded∗ 2 : w/ VSC∗ 3 : w/o VSC
IA114
L–B
IH111
B–Y
L–W
Mas
s A
irFl
ow M
eter
Engine Control ModuleV
SV
(P
urge
)
Fuel
Inje
ctor
( No.
1)
Fuel
Inje
ctor
( No.
2)
Fuel
Inje
ctor
( No.
3)
Fuel
Inje
ctor
( No.
4)
Cam
shaf
t Tim
ing
Oil
Con
trol V
alve
IF19
BR
(BAT)
B1 B1
B2 B2
B1 B3 B2 B4
B1 B5B2
L–W
TOYOTA TACOMA (EM01D0U)
93
R
OX1B
A25
HT1B
A2
W G
OX1B HT1B
+B E2
2 4
3 1
L–W
BR
A1A+
A21
HA1A
A1
P L
A1A+ A1A–
+B HA1A
W
2
1
A1A–
A31
C 1
2
H 3
A 4(
B)
3
G2
A26 27
NE+
EH
61
L–W
( ∗1) L G
W–B
BR
L–W
BR7
J12
BR
BR
BR
BR
BR
BR
( ∗1)
( ∗1)
10AIG1NO. 2
1C14
( ∗2)
(∗2)
2 3
1 5
4
2 2
222
10ASTOP
2
2
1
2
1B2
1C6
DB3
DD5
4 C
STP
L
G–W
L
L
G–W
LG
LL
G–B
L
15 D
ELS
S10
DC13
DC12
LG
(∗2)
(∗3)
( ∗2)
( ∗2)
( ∗2)
( ∗2)
STO
P L
P C
TRL
Rel
ay
W
BR
BR
E 4(A), E 5(B), E 7(C), E 8(D)
NE– NE GND
NE–
34
G
A
R
A
GGG
BR
( ∗1)
( ∗1)
( ∗1)
C 5(B)
BR
8
BR
W–B
L–W
Sto
p La
mp
SW
Air
Fuel
Rat
io S
enso
r( B
ank
1 S
enso
r 1)
Engine Control Module
Cam
shaf
t Pos
ition
Sen
sor
JunctionConnector
CrankshaftPositionSensor
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 1
Sen
sor
2)
BR
PA1 PA5 PA12
(BAT)(IG)
10A
TA
IL
G
A12
B22
G
J 4(
A), J
5( B
)Ju
nctio
nC
onne
ctor
50AJ/B
2
2
1A6
2 5
1 3
1J7
L
(BAT)
TAIL
Rel
ay
G
B2 B1
B3 B4 B2 B1 B3
94
TOYOTA TACOMA (EM01D0U)
Engine Control for 2TR–FE
( 4W
D)
1
P 4
32 B
PSW
G–W
21 B
4WD
LG–B
AD
D A
ctua
tor
Ass
embl
y
Pow
er S
teer
ing
Oil
Pre
ssur
e S
W
IH1
5
IH1
2
4
MGND
L–WW–B
MPMP
D6
IB13
9
ID29ID211
G
L–W
1
G
6
W–B
PPMP
D31
ID210
3
GR
GR
ID212
2
BR
BR
ID24
4
L
E2
A28
5
THW
A32
Y–B
IF1
E 2
VPMP
D5
ID23
V–W
8
V–W
W–B
BR
L–W
L
IF1
IGT1
17 A
IGT1
P3
IGF
2
12
5
2
IGF
3
LG–B
IGT4
A14
IGT4IGT3
15 A
IGT3
LG
3
IGF
22
IGF
3
P–L
IGT2
A16
IGT2
4
W–R
W–R
LG–B
W–RLGW–R
P–L
W–RP
IGF1
A23
I 1 I 2 I 3 I 4
J12
13
L 1
MTRB VLVB VGND VOUTSGND VCC
BR
BR
W–BBR
BR
E 4(A), E 5(B), E 7(C), E 8(D)
E1
A3
BR
BR
11
W–B W–B
BR
L
M
3
10 A
ALT
L
G 2
Gen
erat
or
Engine Control Module
Ignition Coil(No. 1)
Ignition Coil(No. 2)
Ignition Coil(No. 3)
Ignition Coil(No. 4)
JunctionConnector
Eng
ine
Coo
lant
Tem
p.
Sen
sor
Canister Pump Module
M
Canister PressureSensor
Ven
t Val
ve
L BR
L BR
BR
BR
2
1
BR
Leak
Det
ectio
nP
ump
PB17
PA2
LG–B
( 4W
D)
TOYOTA TACOMA (EM01D0U)
95
IF1
1 IF1IF1IF16 3
4
A 8
AIP
VCE2
31
LBR
GR
22 B
AIP
2
L
VC
A18
1
M
M+VTA2VCVTA M–
G–B
VTA1
A20
G–W
VTA2
A19
P
M+
A5L
M–
A4
( ∗1)
GE01
A8
6 5 4 2
E2
3
B
KNK1
A29
EF12 EF11
EKNK
A30
2 1
W( ∗1)
B W
W–B
BR
L L
13 IA1
LG–B
EPA
D20
LG–B
5
12 IA1
R–Y
VPA
D18
R–Y
6
11 IA1
R
VCPA
D26
R
4
7 IA1
R–B
EPA2
D21
R–B
2
8 IA1
GR
–B
VPA2
D19
GR
–B3
9 IA1
L–W
VCP2
D27
L–W
1
A19
5 II1 IJ13
25 C
ACTL
24 C
AC1
G–W
L
A14
ACT
7
AC1
9
OUT
9
GSW2
22
G–W
II110
32 C
F/PS
RR
A21
V 8
IM15
20 C
ELS2
B–W
B–W
W–B
W–B
BR
T 1
K 1
W–B
L
E 4(A), E 5(B), E 7(C), E 8(D)
∗ 1 : Shielded
W–BW–B
BR
L
Accelerator Position Sensor
Air
Pre
ssur
eS
enso
r
Engine Control Module
Throttle Body Assembly
Airb
ag S
enso
rA
ssem
bly
Cen
terA/C Amplifier
Vol
tage
Inve
rter
Kno
ck C
ontro
lS
enso
r ( B
ank
1)
W–B
L L LEPA VPA VCPA EPA2 VPA2 VCP2
96
TOYOTA TACOMA (EM01D0U)
Engine Control for 2TR–FE
E01
A7
W–B
E02
A6
W–B
E03
B4
W–B
E04
B7
W–B
ME01
B3
W–B
EC
D22
W–B
EH EG
TACH
C1
B–W
THWO
C14
GR
–B
13
1
P–B
TC
C17
7 PE
6 PE PA18
EH IC
B
CANH
C33 34 C
CANL
W
7. 5AOBD
SG
2
CG
2
IA127
C30
W
Y–B
CANL CANH BAT
5 4
14 6 16
L–W
Y–B Y
Y
W–B
W–BBR
W–B
W–B
W–B
W–B
D 4
B–W
GR–B
J14 BR
E 4(A), E 5(B), E 7(C), E 8(D)
V–W
V–W
SPD
C8
W–B
W–B
W–B
PA17
TAC
9
B–W
B–W
Engine Control Module Data Link Connector 3
Junc
tion
Con
nect
or
P–B
W–B
1
IE
W–B
2 D1 D
2 E1 E
J 9(
D) ,
J10(
E), J
11( F
)
J13JunctionConnector
Junc
tion
Con
nect
or
2
F1
W–B
W–B
DA2
DB9
TC
13
P–B
L–W
ST–Plug
(BAT)
II13 II14
L–W
LG–B
LG–B
L–W
12 13
EFIOEFII
Transponder Key ECUT10
C15 C16
IMIIMO
TOYOTA TACOMA (EM01D0U)
97
7. 5AGAUGE
1J3
7. 5AECU–B
2
2
1C16
1K13
Tem
p.
Con
trol
Tach
oC
ontro
l
II19
BR
GR–B
B–W
B1 B16
A11 A18
Spe
edC
ontro
l
IA136
B18A12
10AIG1
1J9
IA
2
W–B
IH19 IH18
PF7
PA4
IG+
SP1
1
SE
2
SI
3
21 1
6 327917
BR
GR
–B
B–W
W–B
R–Y
W
W R–Y
R–Y
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
Mal
func
tion
Indi
cato
r La
mp
G R L P
Y BR B O
Speed Sensor(Rear)
Speed Sensor(Front LH, RH)
S 1(
A), (
B)
P
(w/ VSC)
(w/ VSC)
(w/o VSC)
(w/o VSC)
V 1
R
( A/T
)
R P
V
( M/T
)
( M/T
)
( M/T
)( M
/T)
J 1
( M/T
)
PC12
PD2
19
V–W
V–W
R–Y
( M/T
)
C 9
A17
J 4(
A), J
5( B
)
B–W
B–W
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Com
bina
tion
Met
er
JunctionConnector
Junc
tion
Con
nect
or
(IG)(BAT)(IG)
( A/T
)
98
TOYOTA TACOMA (EM01D0U)
Engine Control for 2TR–FE
The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of enginecontrol is given here.
1. Input Signals(1) Engine coolant temp. signal system
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance whichvaries according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINALTHW of the engine control module.
(2) Intake air temp. signal systemThe intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal to TERMINAL THA of the engine control module.
(3) Power steering oil pressure signal systemPower steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal toTERMINAL PSW of the engine control module.
(4) RPM signal systemCamshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.Camshaft position is input as a control signal to TERMINAL G2 of the engine control module, and engine RPM is inputinto TERMINAL NE+.
(5) Throttle signal systemThe throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINALSVTA1 and VTA2 of the engine control module.
(6) Vehicle speed signal systemThe vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine controlmodule via the combination meter and the skid control ECU with actuator. (A/T)The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input toTERMINAL SPD of the engine control module via the combination meter. (M/T)
(7) NSW signal system (A/T)The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal toTERMINAL NSW of the engine control module.
(8) A/C SW signal systemThe operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL AC1 of the engine controlmodule.
(9) Battery signal systemVoltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on,voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module.
(10) Intake air volume signal systemIntake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the enginecontrol module.
(11) STA signal systemTo confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input asa control signal to TERMINAL STA of the engine control module.
(12)Oxygen sensor signal systemThe oxygen density in the exhaust gases is detected and is input as a control signal into TERMINAL OX1B of theengine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for warmingthe sensor. The heater is also controlled by the engine control module (HT1B).
(13)Engine knock signal systemEngine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine controlmodule.
(14)Electrical load signal systemWhen systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal isinput to TERMINALS ELS and ELS2 as a control signal.
(15)Air fuel ratio signal circuitThe air fuel ratio is detected and input as a control signal into TERMINAL A1A+ of the engine control module.
System Outline
TOYOTA TACOMA (EM01D0U)
99
2. Control System∗ SFI system
The SFI system monitors the engine conditions through the signals, which are input from each sensor to the enginecontrol module. Based on this data and the program memorized in the engine control module, the most appropriate fuelinjection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module,operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the drivingconditions, through the engine control module.
∗ ESA systemThe ESA system monitors the engine conditions using the signals, which are input to the engine control module from eachsensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timingis decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This outputcontrols the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for thedriving conditions.
∗ Knock control systemKnock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of theknock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion tothe driving condition.
∗ Evapoparge control systemThis system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuelinjection volume.The signal at this time will be output from TERMINAL PRG of the engine control module to VSV (Purge).
3. Diagnosis SystemWith the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunctionsystem is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunctionindicator lamp.
4. Fail–Safe SystemWhen a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control basedon the signals from that system, the fail–safe system either controls the system by using the data (Standard values)recorded in the engine control module memory or else stops the engine.
: Parts Location
Code See Page Code See Page Code See Page
A4 B 42 (2TR–FE) E7 C 44 J10 E 45
A6 A 42 (2TR–FE) E8 D 44 J11 F 45
A7 B 42 (2TR–FE) F5 B 42 (2TR–FE) J12 45
A8 42 (2TR–FE) F6 42 (2TR–FE) J13 45
A9 42 (2TR–FE) F7 B 42 (2TR–FE) J14 45
A10 42 (2TR–FE) F8 42 (2TR–FE) K1 43 (2TR–FE)
A14 44F19
48 (*2)L1
48 (*2)
A19 44F19
49 (*3)L1
49 (*3)
A21 44 G2 42 (2TR–FE) M1 B 43 (2TR–FE)
C1 42 (2TR–FE) H3 43 (2TR–FE) P1 43 (2TR–FE)
C2 42 (2TR–FE) I1 43 (2TR–FE) P4 43 (2TR–FE)
C5 B 42 (2TR–FE) I2 43 (2TR–FE)S1
A 43 (2TR–FE)
C8 44 I3 43 (2TR–FE)S1
B 43 (2TR–FE)
C9 44 I4 43 (2TR–FE) S10 45
D4 44 I7 45 T1 43 (2TR–FE)
D6 44 J1 45 T10 45
E2 42 (2TR–FE) J4 A 45 V1 43 (2TR–FE)
E4 A 44 J5 B 45 V4 B 43 (2TR–FE)
E5 B 44 J9 D 45 V8 48 (*2)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
100
TOYOTA TACOMA (EM01D0U)
Engine Control for 2TR–FE
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C
28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 53 (2TR–FE) Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
EF1 53 (2TR–FE) Engine Wire and Sensor Wire (Left Side of Cylinder Block)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
ID2 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IF1 55 Engine Wire and Engine Wire (Behind the Glove Box)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
IM1 55 Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)
: Ground Points
Code See Page Ground Points Location
EA 53 (2TR–FE) Front Right Fender
EB 53 (2TR–FE) Front Left Fender
EG53 (2TR–FE) Rear Side of Cylinder Block
EH53 (2TR–FE) Rear Side of Cylinder Block
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BD57 (*2)
Near the Rear DifferentialBD58 (*3)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
101
Memo
102
TOYOTA TACOMA (EM01D0U)
Engine Immobiliser System for 1GR–FE
W–B
6
20AEFI
G–W
2
2
3 2
5 1
2 2
2 2
2A11 2A30 1H3
1B62A332A9
EA EB
E1
+B
IA110 IA11
MREL
E8
BATT
E3
1I15
O
IGSW
E9
BB
W–B
W–B
W–BB
B
W–B
L
G–W
G–W L
OL
B
E05
13
2
W–B
L
L
EFI
Rel
ay
35 D
EOMW
–B
15AIGN
W–B
EE
6
W–B
71 A
BR
C
E01E1 E02
W–B
A
E03
B4
W–B
E04
B7
W–B
ME01
B3
W–B
EF
LG–B
L–W
D15 D16
SEL IMO IMI
D26
14
15
W–B
1I2
OO
( 2W
D A
/T)
( 2W
D A
/T)
W–B
LG–B
(2WD A/T)
L–W
W–B
W–B
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
1H2
E2
+B2
B
J 5
J14
Engine Control Module
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
(IG)(BAT)
TOYOTA TACOMA (EM01D0U)
103
IG
W–B
J 5
15
Transponder Key Coil
E
BB
EFIO
IE
J131
EFII
IL111
CTY
LP
W–B
IND
Sec
urity
Indi
cato
rLi
ght
GND
SIL
(2WD A/T)
VC5
II14
T 9
CODE
II13
TXCT
H 7
AGND
IC
2
U 1
5
∗ 1 : Double Cab
D11
G–B
G–B
3
1
2
10 1K
1 1K
KSW
6
2
1J2
1F7
1 9
1
14
BF12
4 5
7
7T10 8
7. 5AECU–B
2
∗ 2 : Access Cab
2
1612
( ∗2)
13
( ∗2)
7
1C16
1J14
( ∗1)
754DA10
DA3
1
LG–B
L–W
+B
O
D
W–B
VC5
L
LG–R
CODE
P–G
GR
–B
TXCT
WR
AGND
O
W
ANT1
R
6
L–W
LG–B
W–B
V–W
ANT2
R–Y
G–Y
G–Y
G–Y
W–B
W–B
W–B
W–B
W–BW–B
D 4
Dat
a Li
nkC
onne
ctor
3U
nloc
k W
arni
ng S
W
Transponder Key Amplifier
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
Transponder Key ECU
JunctionConnector
Junc
tion
Con
nect
or
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
(BAT)
104
TOYOTA TACOMA (EM01D0U)
Engine Immobiliser System for 1GR–FE
: Parts Location
Code See Page Code See Page Code See Page
D4 44 E6 C 44 J13 45
D1146 (*1) E7 D 44 J14 45
D1148 (*2) E8 E 44 T9 45
E4 A 44 H7 45 T10 45
E5 B 44 J5 45 U1 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
DA 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
: Ground Points
Code See Page Ground Points Location
EA 52 (1GR–FE) Front Right Fender
EB 52 (1GR–FE) Front Left Fender
EE 52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EF 52 (1GR–FE) Rear Side of Left Bank Cylinder Block
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BB56 (*1)
Floor Seat Cross Member RHBB57 (*2)
Floor Seat Cross Member RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
105
Memo
106
TOYOTA TACOMA (EM01D0U)
Engine Immobiliser System for 2TR–FE
W–B
3
20AEFI
G–W
2
2
3 2
5 1
2 2
2 2
2A11 2A30 1H3
1B62A332A9
EA EB
D1
+B
IA110 IA11
MREL
D8
BATT
D3
1I15
O
IGSW
D9
BB
W–B
W–B
W–BB
B
W–B
L
G–W
G–W L
OL
B
ME01
13
2
W–B
L
L
EFI
Rel
ay
29 D
EOMW
–B
15AIGN
EH
6
W–B
73 A
BR
A
E01E1 E02
W–B
A
E03
B4
W–B
E04
B7
W–B
EG
LG–B
L–W
C15 C16
EC IMO IMI
D22
1
W–B
1I2
OO
W–B
LG–B
L–W
W–B
E 4(A), E 5(B), E 7(C), E 8(D)Engine Control Module
(IG)(BAT)
1
8
BR
Junc
tion
Con
nect
or
J12
Junc
tion
Con
nect
or
J14
TOYOTA TACOMA (EM01D0U)
107
IG
J 5
15
Transponder Key Coil
E
BB
EFIO
IE
J131
EFII
IL111
CTY
LP
W–B
IND
Sec
urity
Indi
cato
rLi
ght
GND
SIL
VC5
II14
T 9
CODE
II13
TXCT
H 7
AGND
IC
2
U 1
5
∗ 1 : Regular Cab
D11
G–B
G–B
3
1
2
10 1K
1 1K
KSW
6
2
1J2
1F7
1 9
1
14
BF12
4 5
7
7T10 8
7. 5AECU–B
2
∗ 2 : Access Cab
2
1612
( ∗2)
13
( ∗2)
7
1C16
1J14
( ∗1)
754DA10
DA3
1
LG–B
L–W
+B
O
D
W–B
VC5
L
LG–R
CODE
P–G
GR
–B
TXCT
WR
AGND
O
W
ANT1
R
6
L–W
LG–B
W–B
V–W
ANT2
R–Y
G–Y
G–Y
G–Y
W–B
W–B
W–B
W–B
W–BW–B
D 4
Dat
a Li
nkC
onne
ctor
3U
nloc
k W
arni
ng S
W
Transponder Key Amplifier
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
Transponder Key ECU
JunctionConnector
Junc
tion
Con
nect
or
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
(BAT)
108
TOYOTA TACOMA (EM01D0U)
Engine Immobiliser System for 2TR–FE
: Parts Location
Code See Page Code See Page Code See Page
D4 44 E7 C 44 J13 45
D1148 (*2) E8 D 44 J14 45
D1149 (*3) H7 45 T9 45
E4 A 44 J5 45 T10 45
E5 B 44 J12 45 U1 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
DA 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
: Ground Points
Code See Page Ground Points Location
EA 53 (2TR–FE) Front Right Fender
EB 53 (2TR–FE) Front Left Fender
EG53 (2TR–FE) Rear Side of Cylinder Block
EH53 (2TR–FE) Rear Side of Cylinder Block
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BB57 (*2)
Floor Seat Cross Member RHBB58 (*3)
Floor Seat Cross Member RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
109
Memo
110
TOYOTA TACOMA (EM01D0U)
Headlight
5 2
3 1
HE
AD
Rel
ay
G–Y
2C
G–Y
LG(∗1)
2
HEAD
GR
2
ELT HF HLH HU
OFF
Tail
Head
Low
High
Flash
Ligh
tC
ontro
l SW
Dim
mer
SW
B
A17
Battery
A16
1
IJ19 IJ110
1I9
GR
2 5
1 3
4
2
B 5(A)
2
5 B
2
6 A
2 2
IC
A14
IA129
( ∗3)
1C5
W–B
DD11
DD3
7
DC15
Y(∗1)
1
( ∗1)
A18W
–B
DB1
DD14 DB11
5 A
EB12 IH12
GR
HF
GR
LG–B
HU
GR
R–G
PKB
G–Y
20
W–B
L
W–B
R–W
DRL
DIMRelay
P
17
R–WP
RR
WW
W
11
L
HRLY
( ∗3)
( ∗2)
C11
( ∗2)
4
( ∗1)
24
( M/T
)
8
( A/T
)
12
R–B
R–B
P 6
G 2
A15
IA130
Y–B
Y–B
DIM
R
R
1L1H18
GND
W–B
1
4
W–B
IA
J 4(
A), J
5( B
)
7. 5AECU–B
2
2
1C16
5
20ADR LCK
IG ECUB
4
10AIG1NO. 2
6
ALTB
TL TR
LH
N
RH
Turn
SW
Y( ∗
1)
15
LG( ∗
1)
13
LG–B
(∗1)
W–B(∗1)
W
W
R–B
R–B
W–B
2
R
J 1
Par
king
Bra
ke S
W
Gen
erat
or
Combination SW
Body ECU
JunctionConnector
Junc
tion
Con
nect
or
(BAT)(BAT)(IG)
TOYOTA TACOMA (EM01D0U)
111
P
( ∗1) Y
Y(∗1)
B–Y
( ∗1)
LG
W–B
∗ 3 : 2TR–FE
W
W
∗ 2 : 1GR–FE
LG(∗1)
YLG
E
W–B
9
LG–R
R–B
R–B
∗ 1 : w/ Daytime Running Light
12
DRL
W–B
T11
8
ER
7
EL
W–B
W–B
W–B
( ∗1)
( ∗1)
R–Y
R–B
W–B
3
2 2
3
W–B
4
TFL
2
TFR
EB EA
2A35
2A33
R–Y
R–B
1M11
1B7
1M1
1B5
F 4
W
J13
IE
W–B
R–W
9
7
10
HAZ
1
E
B1
1L8
1J11( ∗
1)
H 7
10AIG1
( ∗1)
1L1
( ∗1)
15ATRN–HAZ
( ∗1)
2
2
F 3
B–Y
6
B
1L4
1B4
( ∗1)
IG
1
LG–B
(∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
W–B(∗1)
1L5
1J8
1L6
1J18
1M10
1I20
B–Y
( ∗1)
( ∗1)
( ∗1)
( ∗1)
(∗1)
( ∗1)
W
W
R–B
R–B
38 2A
W–BW–B
W–BW–B
Fron
t Tur
n S
igna
lLa
mp
( LH
)
Fron
t Tur
n S
igna
lLa
mp
( RH
)
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
JunctionConnector
Turn Signal Flasher
Haz
ard
SW
W–B
(BAT)(IG)
112
TOYOTA TACOMA (EM01D0U)
Headlight
10A
HE
AD
(LO
RH
)
10A
HE
AD
(H
I RH
)
10A
HE
AD
(LO
LH
)
R–B W R–B
10A
HE
AD
(H
I LH
)
W
Hig
h B
eam
P
R–Y
A
R–W
2
C 9
( A) ,
C10
( B)
2 2 2
2222
3 2A
1 2A 2A22
2A20
W
W
12
3 3
2 1
1111
2 2 2 2
IA135
32
IA120
A2
B12
R–B
R–B
R–B
W–B
W–B
W–B
P
P
R–B
H 2
H 1
( US
A)
( US
A)
P
Hea
d
R–B
R–B
2A19
2A2
R–B
(USA)
P
W–B
W–B
W–B
Hea
dlam
p ( L
H)
Hea
dlam
p ( R
H)
Com
bina
tion
Met
er
(USA) (USA)
(USA)
( US
A)
( US
A)
TOYOTA TACOMA (EM01D0U)
113
(w/ daytime running light)∗ This system is designed to automatically activate the turn signal lights during the daytime to keep the car highly visible to
other vehicles. This system is controlled by the body ECU. This system makes use of the turn signal lights as daytime running lights.For this reason, when the turn signal lights are operated, the daytime running lights function is interrupted momentarily,which, however, will be brought back into operation as soon as the interposed operation is over.
∗ This system is enabled when the conditions given below are met.
A) Ignition switch ON condition
B) Turn signal lamp switch OFF condition
C) Hazard lamp switch OFF condition
D) Light control switch OFF condition
E) Parking brake switch OFF condition (Parking brake out of operating condition)**
**: This system does not become active when the parking brake switch is ON. However, once the OFF signal of the parking brake switch is input into the body ECU, this system will become active thereafter, regardless of whether the parking brake switch is ON or OFF.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44 F4 42 (2TR–FE) H7 45
C9 A 44G2
40 (1GR–FE) J1 45
C10 B 44G2
42 (2TR–FE) J4 A 45
C11 44H1
41 (1GR–FE) J5 B 45
F340 (1GR–FE)
H143 (2TR–FE) J13 45
F342 (2TR–FE)
H241 (1GR–FE) P6 45
F4 40 (1GR–FE)H2
43 (2TR–FE) T11 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L29 Relay Wire and Driver Side J/B (Lower Finish Panel)
1M29 Relay Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
DB 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EB152 (1GR–FE)
Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)EB153 (2TR–FE)
Engine No.2 Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
System Outline
114
TOYOTA TACOMA (EM01D0U)
Headlight
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
TOYOTA TACOMA (EM01D0U)
115
Memo
116
TOYOTA TACOMA (EM01D0U)
Front Fog Light
15AFR FOG
2
2
2 3
1 5
22
22
IA126F
2
R–B
2
2
F 1
4
3
IC
F16
W–B
2A25
2A24
W–B
W–B
2A23
W–B
2
1
2
1
W–B
W–B
2A36
W–B
2A33
LG LG
EA
W–B
L
EB
LGL
G
A7
B5
FR FOGRelay
J 4(
A), J
5( B
)
Fog
Lam
p( F
ront
LH
)
Fog
Lam
p( F
ront
RH
)
Fog
Lam
p S
WJu
nctio
nC
onne
ctor
(BAT)
R R
DIMRelay
22
22
4
31
52
1
Battery
B
22
2C
HE
AD
Rel
ay
13
25
Y–B
W
R–B
2
1
R R
W
2
10A HEAD(LO RH)
2A21
2A22
R–B
R–B
TOYOTA TACOMA (EM01D0U)
117
: Parts Location
Code See Page Code See Page Code See Page
F1 40 (1GR–FE) F16 44 J5 B 45
F2 40 (1GR–FE) J4 A 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
2A 24 Engine Room J/B (Engine Compartment Left)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
: Ground Points
Code See Page Ground Points Location
EA 52 (1GR–FE) Front Right Fender
EB 52 (1GR–FE) Front Left Fender
IC 54 Instrument Panel Brace RH
118
TOYOTA TACOMA (EM01D0U)
Taillight
G
GG
TAILRelay
W–B
W–B
W–B
50AJ/B
TAIL
2
( ∗2)
2
W–B
W–B
1A6
GG
W–B
W–B
2 5
1 3W
–B
W–B
W–B
10ATAIL
G
1C11
G
W–B
1C2
( ∗1)
W–B
( ∗2)
1D10
( ∗2)
G
A13
B 5(
A)
L
( ∗1)
IJ18
W–B
G
IC
A6
B5
2
1
2
1
3
2
Tail
3
2
Tail
2
1
2
1
EA
33 2A
L 3
12
BD
37 2A
18
19
EB
BE23 BE21
G
BE24 BE22( ∗
1)
G
( ∗1)
G ( ∗1)
G ( ∗1)
G( ∗1)
W–B
( ∗1)
W–B
G
W–B
( ∗2)
W–B
L 2
R 6
R 5
∗ 1 : w/ Trailer Towing∗ 2 : w/o Trailer Towing
P 3
Ligh
tC
ontro
l SW
THEL
P 2
OFF
Tail
Head
C11
1J7
J 4(
A), J
5( B
)
G
( Can
ada)
G
(Canada)
TRLY
Par
king
Lam
p( L
H)
Par
king
Lam
p( R
H)
Combination SW
Bod
y E
CU
Junc
tion
Con
nect
or
Rea
r C
ombi
natio
nLa
mp
( RH
)
Lice
nse
Pla
te L
amp
( RH
)
Lice
nse
Pla
teLa
mp
( LH
)
Rea
r C
ombi
natio
nLa
mp
( LH
)
Lice
nse
Pla
te L
amp
( RH
)
(BAT)
TOYOTA TACOMA (EM01D0U)
119
C 9
IA
J 12
W–B
Tail
A12
A13
( Can
ada)
40
2
G
( Can
ada)
G
( Can
ada)
G
(Canada)J
4(A)
Com
bina
tion
Met
er
JunctionConnector
Junc
tion
Con
nect
or
120
TOYOTA TACOMA (EM01D0U)
Taillight
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44 L2 49 (*3)
R5
47 (*1)
C9 44
L3
46 (*1) R5 48 (*2)
C11 44 L3 48 (*2)
R5
49 (*3)
J1 45
L3
49 (*3)
R6
47 (*1)
J4 A 45P2
41 (1GR–FE) R6 48 (*2)
J5 B 45P2
43 (2TR–FE)
R6
49 (*3)
L246 (*1)
P341 (1GR–FE)
L248 (*2)
P343 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
BE256 (*1)
Frame No.3 Wire and Frame Wire (Behind the Trailer Socket)BE257 (*2)
Frame No.3 Wire and Frame Wire (Behind the Trailer Socket)
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
BD
56 (*1)
Near the Rear DifferentialBD 57 (*2) Near the Rear DifferentialBD
58 (*3)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
121
Memo
122
TOYOTA TACOMA (EM01D0U)
Illumination
50AJ/B
2
2
1
( ∗3)
IA
10AIG1NO. 2
1C14
TAIL
DC13
DA6
6 1A
2 5
1 3
10ATAIL
1J7
19 1J
G
W–B
W–B
G
IJ18
IC
A6
B5
12
18
Ligh
tC
ontro
l SW
THEL
OFF
Tail
Head
C11
A13
W–B
W–B
W–B
5
1
2
1
2
1
2
1 1
2
IL+2 EAU
LH
Ste
erin
g P
ad S
W
412
3 6
10 7 11 2
19
J 4(
A), J
5( B
)
1 4
13 6
1 12 9 13 2
G
S 8
BR–W
LLGLG
LG
G
GGGG
T
G
IG
G–W
G–W
( w/ A
uto
LSD
)
G–W ( ∗3)
G–W
B 5(A)
BR
–W
G–W
ILL––E
TRLY
TAILRelay
G
( w/ A
uto
LSD
)
J 3
∗ 1 : Separate Type Amplifier∗ 2 : Built–in Type Amplifier
J 2F1
6
A27
D 8
R 4
D 5
Aut
o LS
D S
W
Rhe
osta
t
Spi
ral C
able
Combination SW
Diff
. Lo
ck S
W
Fog
Lam
p S
W
Dow
nhill
Ass
ist
Con
trol S
W
Body ECU
Junction Connector
Junction Connector
Junc
tion
Con
nect
or∗ 3 : w/ Downhill Assist Control
(BAT)(IG)
Junc
tion
Con
nect
or
J 1
W–B
W–R
G
2
W–R
TOYOTA TACOMA (EM01D0U)
123
ID
6 D
(∗2)
(∗1)D6
7
(∗2)
(∗1)
B21 B20
A13 A12A14A15
A
ILL–
ILL+
10
11B10
20
A2
A12C5
B4 B3
A9
B
C 9
A18
A16
8 8 20
ILL–
J 4(
A), J
5( B
)
G–W
5 8
43
40
4
G
BR–W
GND
SWG
G
G
BR–W
W–R
ILL+
G–W
G–W
BR
–W
BR
–W BR
G–W
G G G
W–R G G
GGGG
R 1
( A) ,
( B) ,
R 2
( C) ,
R 3
( D)
H 7
J 4(
A), J
5( B
)
J 3
ILL+
ILL–
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
Rad
io R
ecei
ver
Ass
embl
y
A/C
Con
trol A
ssem
bly
Com
bina
tion
Met
er
A/T
Shi
ft Le
ver
Illum
inat
ion
Junction Connector
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
G
G
G
W–R
Illum
inat
ion
2
W–B
W–B
124
TOYOTA TACOMA (EM01D0U)
Illumination
: Parts Location
Code See Page Code See Page Code See Page
A16 44 D8 44 J5 B 45
A18 44 F16 44R1
A 45
A27 44 H7 45R1
B 45
B5 A 44 J1 45 R2 C 45
C9 44 J2 45 R3 D 45
C11 44 J3 45 R4 45
D5 44 J4 A 45 S8 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
DA 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC 34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IC54 Instrument Panel Brace RH
ID54 Instrument Panel Brace RH
TOYOTA TACOMA (EM01D0U)
125
Memo
126
TOYOTA TACOMA (EM01D0U)
Back–Up Light
R 6
R 5
W–B
W–B
W–B
3
5
3
5
Bac
k–U
p
Bac
k–U
p
BD
10AIG1
1H13
IH112
ID21
IH16
B 1(
B)
P 1(
A)
PY
R–W
R–W
R–W
R–W
R–W
Bac
k–U
p La
mp
SW
Par
k/N
eutra
lP
ositi
on S
W
Rea
r C
ombi
natio
nLa
mp
( RH
)
Rea
r C
ombi
natio
nLa
mp
( LH
)
(IG)
(M/T)B2(A/T)A2
(A/T)A1(M/T)B1
TOYOTA TACOMA (EM01D0U)
127
: Parts Location
Code See Page Code See Page Code See Page
B1 B40 (1GR–FE)
R5
47 (*1)R6
48 (*2)B1 B
42 (2TR–FE) R5 48 (*2)R6
49 (*3)
P1 A41 (1GR–FE)
R5
49 (*3)P1 A
43 (2TR–FE) R6 47 (*1)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1H 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ID2 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
: Ground Points
Code See Page Ground Points Location
BD
56 (*1)
Near the Rear DifferentialBD 57 (*2) Near the Rear DifferentialBD
58 (*3)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
128
TOYOTA TACOMA (EM01D0U)
Stop Light
2
14 1C
10AIG1NO. 2
BD
2
5
( ∗1)
1D
2 1B
( ∗1)
2
LG
( ∗1)
Sto
p
Sto
p
G–W
G–B L
4
3
4
3
5
3
1
2 1
2
LG
BA
10ASTOP
2
2
DC13
DC12
1F41D13
C15
R 6
R 5
LLLW
–B
W–B
W–B
W–B
L
2
1
L ( ∗1)
L ( ∗2)
2
4
2
( ∗1)
G–W ( ∗1)
STP2
STPO
S10
( ∗1)
S 1(
A), (
B)∗ 2 : w/o VSC∗ 1 : w/ VSC
L
(∗1)
1C15
STP
A7B14 (∗2)
A16 (∗1)
A45 (∗1)
G–W
L
L
(∗1)
(∗1)
(∗2)
Sto
p La
mp
SW
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Cen
ter
Sto
p La
mp
Rea
r C
ombi
natio
nLa
mp
( RH
)
Rea
r C
ombi
natio
nLa
mp
( LH
)
(BAT)(IG)
STO
P L
P C
TRL
Rel
ay
TOYOTA TACOMA (EM01D0U)
129
: Parts Location
Code See Page Code See Page Code See Page
C15
46 (*1) R5 49 (*3)
S1
A 43 (2TR–FE)
C15 48 (*2)
R6
47 (*1) S1B
41 (1GR–FE)C15
49 (*3) R6 48 (*2)
S1B
43 (2TR–FE)
R547 (*1)
R6
49 (*3) S10 45R5
48 (*2) S1 A 41 (1GR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
DC 34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
: Ground Points
Code See Page Ground Points Location
BA
56 (*1)
Floor Seat Cross Member LHBA 57 (*2) Floor Seat Cross Member LHBA
58 (*3)
Floor Seat Cross Member LH
BD
56 (*1)
Near the Rear DifferentialBD 57 (*2) Near the Rear DifferentialBD
58 (*3)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
130
TOYOTA TACOMA (EM01D0U)
Interior Light
5 IL1
6 BF1
10AIG1NO. 2
9 IL1
6 1F
( ∗2)
W–B
7 BG1
1 1
2
1
1
2 1
2
1
1
2
W–B
( ∗2)
R–B
( ∗1,
∗3)
( ∗2)
R–B
5
20 22
PCTY RCTY
IG
4
ALTB
BE BF
1F11
7 BF1
20ADR LCK
BG12
1I8 1J15
B 5(A)
D13
D14
D15
D16
D17
D18
D12
R–B ( ∗2)
P–B ( ∗1)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗2)
W–B
( ∗2)
W–B
( ∗2)
W–B
( ∗2)
W–B
( ∗2)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗1)
P–B ( ∗2)
P–B
( ∗1,
∗2)
R–B
∗ 2 : Access Cab∗ 1 : Double Cab
∗ 3 : Regular CabG
–Y
( ∗1,
∗3)
DCTY
26
1
1F7
BF12
G–Y
( ∗2)
G–Y
( ∗2)
D11
W–B
(∗2)
Body ECU
Doo
r C
ourte
sy S
W( F
ront
Pas
seng
er'
s S
ide)
Doo
r C
ourte
sy S
W( R
ear
RH
Upp
er S
ide)
Doo
r C
ourte
sy S
W( R
ear
RH
Low
er S
ide)
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
LH U
pper
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
LH L
ower
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
RH
)
Doo
r C
ourte
sy S
W( R
ear
LH)
∗ 4 : w/ Automatic Glare–Resistant EC Mirror(BAT)(IG)
TOYOTA TACOMA (EM01D0U)
131
( ∗4)
W–B
G–W
R W
G–W
C 9
L
4 A
R WD
OO
R
ON
OFF
L
R 7
3
1
2
1
J 1
W–B
ILE
M 3
7
2
6
ECUB
1
GND
4
Doo
r
1
18
ACTY
IABABD
1E91E
W–B
W–B
W–B
W–B
W–B
W–B
1F10
W–B
W–B
( ∗4)
1D8
W ( ∗4)
II11
1112 1E
1C4
1E2
1C16
1K13 1E7
7. 5AECU–B
2
2 2
2
7. 5ADOME
1H18
B 5(A)
Com
bina
tion
Met
er
Body ECU
JunctionConnector
Roo
m L
amp
( Cen
ter)
Map
Lam
p
(BAT)(BAT)
132
TOYOTA TACOMA (EM01D0U)
Interior Light
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44 D12 49 (*3) J1 45
C9 44 D13 48 (*2)M3
46 (*1)
D11
46 (*1) D14 48 (*2)M3
48 (*2)
D11 48 (*2) D15 46 (*1)
R7
47 (*1)D11
49 (*3) D16 48 (*2) R7 48 (*2)
D1246 (*1) D17 48 (*2)
R7
49 (*3)D12
48 (*2) D18 46 (*1)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1E 28 Roof Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
BG1 57 (*2) Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
BA
56 (*1)
Floor Seat Cross Member LHBA 57 (*2) Floor Seat Cross Member LHBA
58 (*3)
Floor Seat Cross Member LH
BD
56 (*1)
Near the Rear DifferentialBD 57 (*2) Near the Rear DifferentialBD
58 (*3)
Near the Rear Differential
BE 57 (*2) Inside of the Access Door LH
BF 57 (*2) Inside of the Access Door RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
133
Memo
134
TOYOTA TACOMA (EM01D0U)
Turn Signal and Hazard Warning Light
W–B
W–B
B–Y
P
W–B
W–B
LL
( ∗1)
( ∗1)
R–Y
R–B
B–Y
W–B
W–B
LR
B
1
L–B
L–Y
3
2 2
3
2
5 3
IG
W–B
Turn
2728
Turn
RH
Turn
LH
3
1
3
1
6
4
TFL
2
TFR
# #
(∗2)(∗2)
Turn
12
EB EA BD
1B4
1L4
15ATRN–HAZ
2
2
10AIG1
1L1
2A35
2A33
W–B
W–B
L–Y
L–B
L–Y
L–B
R–Y
R–B
1M11
1B7
1M1
1B5
1L3
1I12
1M 1M2 1L2
1I11 1D11 1D4
T11
W–B
F 3
F 4
C 9
R 5
R 6
Fron
t Tur
n S
igna
lLa
mp
( LH
)
Fron
t Tur
n S
igna
lLa
mp
( RH
)
Com
bina
tion
Met
er
Rea
r C
ombi
natio
nLa
mp
( RH
)
Rea
r C
ombi
natio
nLa
mp
( LH
)
Turn Signal Flasher
(BAT)(IG)
# : Short Pin
TOYOTA TACOMA (EM01D0U)
135
W
J 4(
A), J
5( B
)
18 1H
7
J13
1L
IEIC
6
LGY
W–B
W–B
W–B
IA
W–B
R–W
B 5(A)
9
7
7 89
TRELTL
EL ERE
( ∗1)
A
DRL
N
RH
12
15 13
LH
5 A
10
HAZ
5 B
1412 W–B
DRL
12
LG–B
Turn
SW
E
B1
1L5
1J8
1L6
1J18
1M10
1I20
1L8
1J11
LG–R
( ∗1)
LGY
W–B
T11
W–B
C11
∗ 2 : w/o Daytime Running Light∗ 1 : w/ Daytime Running Light
H 7
J 1
Com
bina
tion
SW
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
Body ECU
JunctionConnector
JunctionConnector
Junc
tion
Con
nect
or
Turn Signal Flasher
Haz
ard
SW
136
TOYOTA TACOMA (EM01D0U)
Turn Signal and Hazard Warning Light
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44 H7 45 R5 49 (*3)
C9 44 J1 45
R6
47 (*1)
C11 44 J4 A 45 R6 48 (*2)
F340 (1GR–FE) J5 B 45
R6
49 (*3)F3
42 (2TR–FE) J13 45 T11 45
F440 (1GR–FE)
R547 (*1)
F442 (2TR–FE)
R548 (*2)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L29 Relay Wire and Driver Side J/B (Lower Finish Panel)
1M29 Relay Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BD
56 (*1)
Near the Rear DifferentialBD 57 (*2) Near the Rear DifferentialBD
58 (*3)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
137
Memo
138
TOYOTA TACOMA (EM01D0U)
Light Auto Turn Off System
1 2C
HE
AD
Rel
ay
1
TAIL
Rel
ay
2
6 1A
5 2
3 1
2L
A14
2 5
1 3
7. 5AECU–B
2
2
1C16
5
IG ECUB
10AIG1NO. 2
6
R
IA129
G
TAILW
–BW
–B
GA13
GND
IJ18
IC
A6
B5
12
18
Ligh
tC
ontro
l SW
TELH
OFF
Tail
Head
2
J 4(
A), J
5( B
)
IA
J 14
W–B
1H18
1
P
HEAD
P
A17
IJ19
20G
–Y
( ∗3,
∗5)
DCTY
26
1
1F7
BF12G
–Y
( ∗4)
G–Y
( ∗4)
D11
19
TRLYHRLY
50A
J/B
W
WWL
B
C11
2
Battery
1
B 5(A)
Com
bina
tion
SW
Body ECU
JunctionConnector
Junc
tion
Con
nect
or
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
(BAT)(IG)
140A
ALT
(∗1
)12
0A A
LT (
∗2)
TOYOTA TACOMA (EM01D0U)
139
∗ 4 : Access Cab∗ 3 : Double Cab
∗ 5 : Regular Cab
5 IL1 9 IL1
6 1F
7 BG1
1 1
2
1
1
2 1
2
1
1
2
R–B
( ∗3,
∗5)
( ∗4)
R–B
20 22
PCTY RCTY
BE BF
7 BF1BG12
1I8 1J15
D13
D14
D15
D16
D17
D18
D12
R–B ( ∗4)
P–B ( ∗3)
P–B ( ∗4)
P–B ( ∗4)
P–B ( ∗4)
W–B
( ∗4)
W–B
( ∗4)
W–B
( ∗4)
W–B
( ∗4)
P–B ( ∗4)
P–B ( ∗4)
P–B ( ∗4)
P–B ( ∗4)
P–B ( ∗3)
P–B ( ∗4)
P–B
( ∗3,
∗4)
R–B
B 5(A)Body ECU
Doo
r C
ourte
sy S
W( F
ront
Pas
seng
er'
s S
ide)
Doo
r C
ourte
sy S
W( R
ear
RH
Upp
er S
ide)
Doo
r C
ourte
sy S
W( R
ear
RH
Low
er S
ide)
Doo
r C
ourte
sy S
W( R
ear
LH U
pper
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
LH L
ower
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
RH
)
Doo
r C
ourte
sy S
W( R
ear
LH)
∗ 2 : w/o Trailer Towing∗ 1 : w/ Trailer Towing
140
TOYOTA TACOMA (EM01D0U)
Light Auto Turn Off System
When all doors are closed after opening some or all of them after the Ignition SW is turned from ON to OFF with the headand tail lamps ON, these lamps will remain ON for 30 seconds after the doors are closed and then go OUT automatically. Pressing the lock SW on a wireless controller twice in succession turns OFF the lamps instantly.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44D12
48 (*2) D17 48 (*2)
C11 44D12
49 (*3) D18 46 (*1)
D11
46 (*1) D13 48 (*2) J1 45
D11 48 (*2) D14 48 (*2) J4 A 45D11
49 (*3) D15 46 (*1) J5 B 45
D12 46 (*1) D16 48 (*2)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
BG1 57 (*2) Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
BE 57 (*2) Inside of the Access Door LH
BF 57 (*2) Inside of the Access Door RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
TOYOTA TACOMA (EM01D0U)
141
Memo
142
TOYOTA TACOMA (EM01D0U)
Key Reminder
7. 5AGAUGE
1J3
7. 5AECU–B
2
2
1C16
1K13
IA
2
W–B
21 1
2
W–B
RR
V
J 1
C 9
1
( ∗2)
G–Y
BF12
1F7
D11
G–Y
( ∗2)
1J12
12
G–Y
1K10
2
1
W–B
IC
1
G–B
W–B
U 1
W–B
G–Y
( ∗1,
∗3)
1J5
11
G–B
∗ 2 : Access Cab∗ 1 : Double Cab
∗ 3 : Regular Cab
Unl
ock
War
ning
SW
Com
bina
tion
Met
er
JunctionConnector
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
(BAT)(IG)
TOYOTA TACOMA (EM01D0U)
143
Key Reminder SystemWith the ignition key inserted in the key cylinder (Unlock warning SW on), the ignition SW still off and driver’s door open(Door courtesy SW on), when a signal is input to TERMINAL 12 of the combination meter, the combination meter operates,current flows from TERMINAL 1 of the combination meter to TERMINAL 2 GROUND and key reminder buzzer sounds.
: Parts Location
Code See Page Code See Page Code See Page
C9 44D11
48 (*2) J1 45
D11 46 (*1)D11
49 (*3) U1 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
144
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 1GR–FE
20AEFI
G–W
2
2
3 2
5 1
2 2
2 2
2A11 2A30 1H3 1H2
1B62A332A9
EA EB
E1
+B
E2
+B2
IA110 IA11
MREL
E8
BATT
E3
15AIGN
1I15
O
IGSW
E9
28 A
E2
1
M
M+VTA2VCVTA M–
G–B
VTA1
A20
G–W
VTA2
A19
P
M+
A5
L
M–
A4( S
hiel
ded)
GE01
A17
6 5 4 2
E2
3 T 1
L
VC
A23
3 IF1
L
15 B
14 B
W–B
SEL
D26
IC
BR
W–BBR
BRBB
B
W–B
BR
W–B
W–B
W–BB
B
W–B
L
G–W
G–W L
OL
10AIG1NO. 2
1C14
( ∗1)
(∗1)
2 3
1 5
4
2 2
222
10ASTOP
2
2
1
2
1B2
1C6
DB3
DD5
15 E
STP
L
G–W
L
L
LG
LL
G–B
L
S10
DC13
DC12
LG
(∗2)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
STO
P L
P C
TRL
Rel
ay
BR
BR
W–B
( 2W
D)
( 2W
D)
L
L
( ∗1)
EFI
Rel
ay
LG ( ∗1)
G–W
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
∗ 2 : w/o VSC∗ 1 : w/ VSC
BR
21 A
THW
Y–B
J 5(
B)
Sto
p La
mp
SW
Engine Control Module
Throttle Body Assembly
Junc
tion
Con
nect
or
IF14
IF15
W–B
1
L
IF1
BR
BR
BR
IF110 IF19
1
2
E 2
Eng
ine
Coo
lant
Tem
p.
Sen
sor
(BAT)(IG)(IG)(BAT)
TOYOTA TACOMA (EM01D0U)
145
Y–B
10AETCS
2
2
IA16
+BM
E7
7. 5ASTA
2
2
2A6
2B3
PA11
PB18
NSW
B8
B24
THO1
B32
THO2
B13
SLT+
B12
SLT–
B19
SL1+
B18
SL1–
B17
SL2+
B16
SL2–
B15
SLU+ SLU–
B14
S1
B11
S2
B10
SR
B9
GR
G–B
R–B
G–W P–L
W–L
G–R
Y–B LG W–G
L–W G
LG VV
V
LG
2
1
R
SP2–
B26
L–R
SP2+
B34
2
1
Y–R
NT–
B27
W–R
NT+
B35
T 5
T 6
BR
BR
PB9
5
4
N
P
B–Y
STA
C11
B–Y
V
2B4
2B5
B L
V
P 1
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
Tran
smis
sion
Rev
olut
ion
Sen
sor
( Tur
bine
)
Engine Control ModuleP
ark/
Neu
tral
Pos
ition
SW
Tran
smis
sion
Rev
olut
ion
Sen
sor
( Ele
ctro
nica
lly C
ontro
lled
Tran
smis
sion
)
OT2–OT–
OT+ S2S1SL2+ SL2– SLU+SL1– SLU– SROT2+ SLT+ SLT– SL1+
OO L
L G GR R L Y V LG BR W B SB
E 1(A)Electronically Controlled Transmission Solenoid
(ST)(BAT)
A10 A9 A14 A6 A12 A4 A11 A3 A13 A5 A8 A15 A7
A2 A1
146
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 1GR–FE
E1
C1
BR
E01
A7
W–B
E02
A6
W–B
E03
B4
W–B
E04
B7
W–B
E05
B6
W–B
ME01
B3
W–B
OILW
D29
P
EE EF
13 IA1
LG–B
EPA
E20
LG–B
5
12 IA1
R–Y
VPA
E18
R–Y
6
11 IA1
R
VCPA
E26
R
4
7 IA1
R–B
EPA2
E21
R–B
2
8 IA1
GR
–B
VPA2
E19
GR
–B
3
9 IA1
L–W
VCP2
E27
L–W
1
A19
D
YL
D
3 2
G–Y
D
D
SPD
92119 D
8
D
V–W
R–Y
L–B
10
35 D
EOM
R–W
R
D11 20 D
4
B
W–B
2
IE
13
2
W–B
PC12
PD2
V–W
II18
P
R–W
B
Y
L–B
R–Y
G–Y
P
V–W
J14
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
23
P–B
TC
E D
CANL
W
3433
B
CANH
D
DB9
DA2
P–B
L–W
Y–B
6 1413
D 4
CANH CANLTC
Accelerator Position Sensor
Engine Control Module
Data Link Connector 3
Junc
tion
Con
nect
or
1
EPA VPA VCPA EPA2 VPA2 VCP2
2 E1 E
2 D1 D
J 9(
D) ,
J10(
E), J
11( F
)Ju
nctio
nC
onne
ctor
F1
Junc
tion
Con
nect
or
J13
W–B
ST–Plug
TOYOTA TACOMA (EM01D0U)
147
Spe
edC
ontro
l
1C
1 A
A/T
OIL
TE
MP
16
A
A21
39
1K13
R
V R
Speed Sensor(Front LH, RH)
7. 5AECU–B
2
2
7. 5AGAUGE
1J3
A19
R–Y
R–Y
R–Y
36 IA1
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
A6
(w/o VSC)(w/ VSC)12 A
18 B
Y BR B O
Speed Sensor(Rear)
(w/ VSC)(w/o VSC)
SP1
PLRG
FL– FR+FL+ FR–
17 A39 B
3 A40 B
4 A9 B
18 A10 B
RV
S 1(A), (B)
C 9
( A) ,
C10
( B)
V–W
P
R–W
B
Y
L–B
R–Y
G–Y
R–W
B
Y
L–B
R–Y
G–Y
P
V–W
Skid Control ECU with Actuator
Com
bina
tion
Met
er
(BAT)(IG)
148
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 1GR–FE
B
12 PE
14 PC
G–B
R–W
PCPC14 PE
3 B
15 PE
2 B
2
J 4(
A), J
5( B
)
8
IJ1
1
W
V B
IJ1
V W
G–Y
R–Y
L–W
L–B
PC 7
AT4AT2
ATDNSSDNSSLATL
8
Y
8 3 7 9 1 6
2
LL 2L DL NL RL PL
3 PC
1 B
RB
L 2 3 4 D N R P
4 A
L–W
5 3
4 10 9 2
9 B
1
B PC17 PB8 6 PB PB5PC15 PB7 PC16 PB1 PB3 PC13
PC4
4B5B6B7B8
R–W G–B
R–WBBYL–
BYL–B
R–Y
R–Y
G–Y
R–Y
L–B
Y B B W L–W
R–W G–B
A2
10AIG1
1H13
2
IA
IH112
C 9(A), C10(B)
P 1
J 1
W–B
S 7
YP
P
G–Y
R–Y
L–B
Y
B
R–W
Park/Neutral Position SW
Shift LockControl ECU
Combination Meter
JunctionConnector
Junc
tion
Con
nect
or
(IG)
TOYOTA TACOMA (EM01D0U)
149
Previous automatic transmissions have selected each gear shift using mechanically controlled throttle hydraulic pressure,governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, electricallycontrols the line pressure, throttle pressure, lock–up pressure and accumulator pressure etc. through the solenoid valve. Theelectronically controlled transmission is a system which precisely controls gear shift timing and lock–up timing in response tothe vehicle’s driving conditions and the engine condition detected by various sensors. It makes smooth driving possible byshift selection for each gear which is the most appropriate to the driving conditions at that time, and by preventing downing,squat and gear shift shock when starting off.
1. Gear Shift OperationWhen driving, the engine warm up condition is input as a signal to TERMINAL THW of the engine control module from theengine coolant temp. sensor and the vehicle speed signal from vehicle speed sensor is input to TERMINAL SP2+ of theengine control module. At the same time, the throttle valve opening signal from the throttle position sensor is input toTERMINALS VTA1 and VTA2 of the engine control module as throttle angle signal.Based on these signals, the engine control module selects the best shift position for the driving conditions and sends currentto the electronically controlled transmission solenoid.
2. Line Hydraulic Pressure ControlThe engine control module adjusts the line hydraulic pressure to the optimal level by controlling TERMINAL SLT+ of themodule according to the engine torque data. This realizes the smooth gear shifting.
3. High Response Gear Shifting ControlThe engine control module performs the high response engine torque up control to control the ignition–timing lag as well asopening the electronic throttle when shifting down. By doing this, the gear shifting is performed in a short period of time.Moreover, the engine control module uses the orifice switching control, which optimizes the speed of applying and reducingthe hydraulic pressure. And it realizes the fine shifting condition by applying and reducing hydraulic pressure slowly whenthe gear shifting shock is important and quickly when the high response is required.
4. Clutch Hydraulic Pressure ControlThe engine control module controls the clutch operation in the optimal timing and with the best hydraulic pressure accordingto the engine torque data and the number of the clutch revolution
5. Lock–Up and Flexible Lock–Up ControlThe engine control module carries out the lock–up control by controlling the TERMINAL SLU+ of the module according tothe shift position, vehicle speed, throttle opening degree and running conditions. The engine control module also steadilykeeps applying the lock–up clutch a delicate slippage to improve the transmission efficiency (Fuel efficiency) of the torqueconverter.
6. Stop Lamp SW CircuitIf the brake pedal is depressed (Stop lamp SW on) when driving in lock–up condition, a signal is input to TERMINAL STP ofthe engine control module. The engine control module operates and cuts the current to the solenoid to release lock–up.
7. AI–Shift ControlThe engine control module judges whether the road is downslope or upslope by detecting the throttle opening degree or thevehicle’s speed. Moreover it can expect the winding roads by detecting the turning condition of the vehicle. The enginecontrol module keeps unnecessary shifting up from the fourth gear from operating and carries out the automatic shiftingdown to the third gear in order to control the vehicle running according to the road conditions. The engine control modulealso reads the driver’s intention during driving from his (her) accelerating operation and the running conditions of the vehicle.As a result of that, ideal shifting patters for each driver are automatically selected without any switching operations.
: Parts Location
Code See Page Code See Page Code See Page
A19 44 E7 D 44 J14 45
C9 A 44 E8 E 44 P1 41 (1GR–FE)
C10 B 44 J1 45S1
A 41 (1GR–FE)
D4 44 J4 A 45S1
B 41 (1GR–FE)
E1 A 40 (1GR–FE) J5 B 45 S7 45
E2 40 (1GR–FE) J9 D 45 S10 45
E4 A 44 J10 E 45 T1 41 (1GR–FE)
E5 B 44 J11 F 45 T5 41 (1GR–FE)
E6 C 44 J13 45 T6 41 (1GR–FE)
System Outline
150
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 1GR–FE
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IF1 55 Engine Wire and Engine Wire (Behind the Glove Box)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
EA 52 (1GR–FE) Front Right Fender
EB 52 (1GR–FE) Front Left Fender
EE 52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EF 52 (1GR–FE) Rear Side of Left Bank Cylinder Block
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
TOYOTA TACOMA (EM01D0U)
151
Memo
152
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 2TR–FE
20AEFI
2
2
3 2
5 1
2
A
2
W–B
2
E02
2
2A11 2A30 1H3
E1 E01
A
BR
A3
1B6
7
2A332A9
EA EB
D1
+B
IA110 IA11
MREL
D8
BATT
D3
15AIGN
1I15
O
IGSW
D9
W–B
6 28 A
E2
1
M
M+VTA2VCVTA M–
G–B
VTA1
A20G
–W
VTA2
A19
P
M+
A5
L
M–
A4
( Shi
elde
d)
GE01
A8
6 5 4 2
E2
3 T 1
LVC
A18
IF11
L
J12
BR
1
8
EH
BR
BB
W–B
W–B
W–BB
B
W–B
L
G–W
G–W L
BR
OL
10AIG1NO. 2
1C14
( ∗1)
(∗1)
2 3
1 5
4
2 2
222
10ASTOP
2
2
1
2
1B2
1C6
DB3
DD5
4 C
STP
L
G–W
L
L
LG
LL
G–B
L
S10
DC13
DC12
LG
(∗2)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
STO
P L
P C
TRL
Rel
ay
22 A
THOC
BR
W–B
L
L
( ∗1)
EFI
Rel
ay
LG ( ∗1)
G–W
BR
E 4(A), E 5(B), E 7(C), E 8(D)
∗ 2 : w/o VSC∗ 1 : w/ VSC
A 2
BR
W–B
32 A
THW
E 2
BR
BR
BR
Y–BGR
Sto
p La
mp
SW
Engine Control Module
Junc
tion
Con
nect
or
A/T
Flu
id T
emp.
S
enso
r
Throttle Body Assembly
Eng
ine
Coo
lant
Tem
p.
Sen
sor
IF15
IF14
IF13
L
W–B
W–B
W–B
1
2
1
2
(BAT)(IG)(IG)(BAT)
TOYOTA TACOMA (EM01D0U)
153
Y–B
B–Y
10AETCS
2
2
IA16
+BM
D7
7. 5ASTA
2
2
2A6
2B3
PD3
PB18
NSW
D30
B24
THO1
B12
SLT+
B13
SLT–
B11
SLU+
11 IH1
SLU–
B10
S1
B9
S2
B8
G–B
R–B V LG W–G
L–W
LG VV
LG
13 IA1
LG–B
EPA
D20
LG–B
5
12 IA1
R–Y
VPA
D18
R–Y
6
11 IA1
R
VCPA
D26
R
4
7 IA1
R–B
EPA2
D21
R–B
2
8 IA1
GR
–B
VPA2
D19
GR
–B
3
9 IA1
L–W
VCP2
D27
L–W
1
A19
2
1
V 2
SP2–
B27
RG
35 B
P 1
2
IE
13
1
1
W–B
BR
PB9
5
4
N
P
B–Y
STA
D12
B–Y
2B4
2B5
B L
V
SP2+
E 4(A), E 5(B), E 7(C), E 8(D)
22 D
EC
Accelerator Position Sensor
Engine Control Module
Par
k/N
eutra
lP
ositi
on S
W
Veh
icle
Spe
ed S
enso
r( E
lect
roni
cally
Con
trolle
d Tr
ansm
issi
on)
W–B
W–B
V VEPA VPA VCPA EPA2 VPA2 VCP2
W–B
1 F
Junc
tion
Con
nect
or
J 9(
D) ,
J10(
E), J
11( F
)
D1 D2
E1 E2
Data Link Connector 3
TC CANLCANH
D 4
13 146
Y–B
L–W
P–B
2 DA
9 DB
C
CANH
B
33 34
WCANL
CC
TC
P–B
17
Junc
tion
Con
nect
or
J14
Junc
tion
Con
nect
or
J13
ST–Plug
E 1(B)
OT2–
OT2+ S2S1SLU+ SLU–SLT+ SLT–
OO
O G Y BR W B
Electronically Controlled Transmission Solenoid
(ST)(BAT)
B1 B2 B6 B3 B7 B4 B8
B5
154
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 2TR–FE
1
2
T 6
E03
B4
W–B
E04
B7
W–B
B26
ME01
B3
W–B
Spe
edC
ontro
l
NCO–
LY
NCO+
34 B
EG
1C
1 A
16
A21
1K13
R
V R
7. 5AECU–B
2
2
7. 5AGAUGE
1J3
A19
C
R–Y
L
C
3
R–Y
R–Y
R–Y
36 IA1
D
C
C
SPD
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
A6
(w/o VSC)(w/ VSC)12 A
18 B
Y BR B O
Speed Sensor(Rear)
(w/ VSC)(w/o VSC)
91019
SP1
C
8
2
V–W
L–B
21
R–W
R
C11
Y
RV
C 9
( A) ,
C10
( B)
V–W
PC12
PD2
V–W
R–W
Y
R–Y
L–B
G–Y
E 4(A), E 5(B), E 7(C), E 8(D)
S 1(
A), (
B)
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
G R L P
Speed Sensor(Front LH, RH)
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Engine Control Module
Tran
smis
sion
Rev
olut
ion
Sen
sor
( Tur
bine
)
Com
bina
tion
Met
er
G–Y
(BAT)(IG)
TOYOTA TACOMA (EM01D0U)
155
B
4 PC
14 PC
G–B
R–W
PCPC
3 B
15 PE
2 B
11 PE 1
Y
IJ1
W
G–Y
G–WL–
B
PC 7
ATD
AT3
8
R–Y
8 3 7 9 1 6
2
LL 2L DL NL RL PL
5 PC
1 B
RB
L 2 3 D N R P
G–W
2
3
1
9
PC17 PB8 6 PB PB5
R–Y
PB2 PC16 PB7 PB3 PC13
4B5B6B7
R–W G–B
R–W
NSSD
YL–B
R–Y
L–B
G–Y
R–Y
L–B
W
L–W
R–W G–B
A2
10AIG1
1H13
2
IA
IH112
C 9(A), C10(B)
P 1
J 1
W–B
YP
P
G–Y
L–B
R–Y
Y
R–W
3 PC
Y
PC15
S 7L–
B
G–Y
Park/Neutral Position SW
Shi
ft Lo
ckC
ontro
l EC
U
Combination Meter
JunctionConnector
(IG)
156
TOYOTA TACOMA (EM01D0U)
ECT and A/T Indicator for 2TR–FE
Previous automatic transaxle have selected each gear shift using mechanically controlled throttle hydraulic pressure,governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, controlsthe line pressure and lock–up pressure etc. electrically, through the solenoid valve. The engine control module controls eachsolenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for eachgear that is most appropriate to the driving conditions at that time.
1. Gear Shift OperationDuring driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions,based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also theinput signals to TERMINAL SPD of the engine control module from the vehicle speed sensor devoted to the electronicallycontrolled transmission. Current is then output to the electronically controlled transmission solenoid. When shifting to 1stspeed, the current flows from TERMINAL S1 of the engine control module to TERMINAL (B) 4 of the solenoid to GROUND,and from TERMINAL S2 of the engine control module to TERMINAL 8 of the electronically controlled transmission solenoidto GROUND, and continuity to the No.1 and No.2 solenoid causes the shift.For 2nd speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL (B) 4 of the solenoid toGROUND, and from TERMINAL S2 of the engine control module to TERMINAL (B) 8 of the solenoid to GROUND, andcontinuity to solenoid No.1 and No.2 causes the shift.For 3rd speed, there is no continuity No.1 solenoid, only to No.2, causing the shift.Shifting into 4th speed (Overdrive) takes place when there is no continuity to both No.1 and No.2 solenoid.
2. Stop Lamp SW CircuitIf the brake pedal is depressed (Stop lamp SW on) when driving in lock–up condition, a signal is input to TERMINAL STP ofthe engine control module, the engine control module operates and continuity to the lock–up solenoid is cut.
3. AI–Shift ControlThe engine control module judges whether the road is downslope or upslope by detecting the throttle opening degree or thevehicle’s speed. Moreover it can expect the winding roads by detecting the turning condition of the vehicle. The enginecontrol module keeps unnecessary shifting up from the fourth gear from operating and carries out the automatic shiftingdown to the third gear in order to control the vehicle running according to the road conditions. The engine control modulealso reads the driver’s intention during driving from his (her) accelerating operation and the running conditions of the vehicle.As a result of that, ideal shifting patters for each driver are automatically selected without any switching operations.
: Parts Location
Code See Page Code See Page Code See Page
A2 42 (2TR–FE) E7 C 44 P1 43 (2TR–FE)
A19 44 E8 D 44S1
A 43 (2TR–FE)
C9 A 44 J1 45S1
B 43 (2TR–FE)
C10 B 44 J9 D 45 S7 45
D4 44 J10 E 45 S10 45
E1 B 42 (2TR–FE) J11 F 45 T1 43 (2TR–FE)
E2 42 (2TR–FE) J12 45 T6 43 (2TR–FE)
E4 A 44 J13 45 V2 43 (2TR–FE)
E5 B 44 J14 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
System Outline
TOYOTA TACOMA (EM01D0U)
157
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PB 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IF1 55 Engine Wire and Engine Wire (Behind the Glove Box)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
EA 53 (2TR–FE) Front Right Fender
EB 53 (2TR–FE) Front Left Fender
EG53 (2TR–FE) Rear Side of Cylinder Block
EH53 (2TR–FE) Rear Side of Cylinder Block
IA 54 Left Kick Panel
IE 54 Right Kick Panel
158
TOYOTA TACOMA (EM01D0U)
Cruise Control for 1GR–FE
20AEFI
G–W
2
2
3 2
5 1
2 2
2 2
2A11 2A30 1H3 1H2
1B62A332A9
EA EB
E1
+B
E2
+B2
IA110 IA11
MREL
E8
BATT
E3
PC16 PE15
1
2
40 IA1
9 IF110 IF1
BR
BR
5 IF1
4 IF1
BR
BR
BR
W–BBR
E2
A28
1
M
M+VTA2VCVTA M–
G–B
VTA1
A20
G–W
VTA2
A19
P
M+
A5
L
M–
A4( S
hiel
ded)
GE01
A17
6 5 4 2
E2
3
W–B
T 1
L
VC
A23
L
15
W–B
SEL
D26
IC
BBB
W–B
W–B
W–B
W–BB
B
W–B
L
G–W
G–W L
L
10AIG1NO. 2
1C14
( ∗1)
(∗1)
LG
DC13
DC12
LG
(M/T)
L–B
P
( A/T
)( A
/T)
Y
L–B
( A/T
)
( M/T
)
L–B
12 IH1
L
L(∗2)
LG
(∗1)
13 1H
10AIG1
3 PB
LG
(M/T)
L
STP
E15
5 DD
3 DB
BR
BR
14
W–B
( 2W
D)
( 2W
D)
L
L
EFI
Rel
ay
L–B
21 D
D
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
∗ 2 : w/o VSC∗ 1 : w/ VSC
P 1
C14
DC14
J 5
Cru
ise
Con
trol
Clu
tch
SW
Engine Control Module
Par
k/N
eutra
lP
ositi
on S
W
Throttle Body Assembly
Junc
tion
Con
nect
or
IF11
IF13
L
D
2
7
(IG)(IG)(BAT)
6 1C
2 1B
L(∗1)
1J9
P
(M/T)
TOYOTA TACOMA (EM01D0U)
159
Y–B
15AIGN
1I15
O
IGSW
E9
10AETCS
2
2
IA16
+BM
E7
B24
THO1
B32
THO2
B13
SLT+
B12
SLT–
B19
SL1+
B18
SL1–
B17
SL2+
B16
SL2–
B15
SLU+ SLU–
B
OT2–OT–
OT+ S2
14
S1SL2+ SL2– SLU+SL1– SLU– SROT2+ SLT+ SLT– SL1+
OO L
L G GR R L Y V LG BR W B SB
S1
B11
S2
B10
SR
B9
GR
G–B
R–B
G–W P–L
W–L
G–R
Y–B LG W–G
L–W G
LGLG
V–W
2 IA1
3
42 3
1 5
4
2 2
222
10ASTOP
2
2
1
2G
–W
ST1–
( ∗1)
LL
G–B
S10
E
( ∗1)
( ∗1)
( ∗1)
STO
P L
P C
TRL
Rel
ay
L(∗2)
(∗1)
OO
8 1C
V–W
16
( ∗2)L
G–W
BR
BR
LG
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
E 1(A)
Sto
p La
mp
SW
Electronically Controlled Transmission Solenoid
Engine Control Module
(BAT)(IG)(BAT)
L(∗1)
A10 A9 A14 A6 A12 A4 A11 A3 A13 A5 A8 A15 A7
A2 A1
P
(M/T)
P
(M/T)
160
TOYOTA TACOMA (EM01D0U)
Cruise Control for 1GR–FE
E1
C1
BR
E01
A7
W–B
E02
A6
W–B
E03
B4
W–B
E04
B7
W–B
E05
B6
W–B
ME01
B3
W–B
PI
D18
LG
EE EF
13 IA1
LG–B
EPA
E20
LG–B
5
12 IA1
R–Y
VPA
E18
R–Y
6
11 IA1
R
VCPA
E26
R
4
7 IA1
R–B
EPA2
E21
R–B
2
8 IA1
GR
–B
VPA2
E19
GR
–B
3
9 IA1
L–W
VCP2
E27
L–W
1
A19
D
SPD
8
V–W
35 D
EOM
W–B
2
IE
13
2
W–B
PC12
PD2
V–W
II17
LG
LG
V–W
J14
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E)
BR
–W
CCS
2
D2
CCS
1
CANCEL
– SET
+ RES
Main
ECC
2
S 8
II1
BR
–W
Cru
ise
Con
trol S
W
PF8
PA18
EE
W–B
W–B
Accelerator Position Sensor
Engine Control Module
Spi
ral C
able
Junc
tion
Con
nect
or
EPA VPA VCPA EPA2 VPA2 VCP2
2 D1 D
2 E1 E
B
CANH
D33 34 D
CANL
W
Y–B
J 9(
D) ,
J10(
E), J
11( F
)Ju
nctio
nC
onne
ctor
F1
W–B
P–B
P–B
DB
DA
9
2
D 4
TC
13
1
E
TC
23
W–B
Data Link Connector 3
Junc
tion
Con
nect
or
J13
L–W
14
CANLCANH
6
ST–Plug
P
(M/T)
P
(M/T)
TOYOTA TACOMA (EM01D0U)
161
Spe
edC
ontro
l
1C
CR
UIS
E
16
1K13
V R
Speed Sensor(Front LH, RH)
2
IA
7. 5AECU–B
2
2
7. 5AGAUGE
1J3
LG W–B
R–Y
R–Y
R–Y36 IA1
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
(w/o VSC)(w/ VSC)12 A
18 B
Y BR B O
Speed Sensor(Rear)
(w/ VSC)(w/o VSC)
SP1
PLRG
FL– FR+FL+ FR–
17 A39 B
3 A40 B
4 A9 B
18 A10 B
RV
J 1
S 1(A), (B)V
–W
LG
V–W
Skid Control ECU with Actuator
JunctionConnector
Com
bina
tion
Met
erC
9
(BAT)(IG)
PF7
PA4
SE SI
IG+
21924
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
V 1
32
1
3
P
(M/T)
R–Y
( M/T
)
W
( M/T
)
W(M/T)
R–Y(M/T)
( A/T
)( A
/T)
8IH1
9IH1
P
( M/T
)
1621
R–Y
(M/T)
W
(M/T)
( A/T
)
162
TOYOTA TACOMA (EM01D0U)
Cruise Control for 1GR–FE
The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makesit possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal.
1. Set OperationWhen the main SW is turned on, the system starts preparations necessary for the cruise control and turns on the indicatorlight in the combination meter.
2. Set Speed ControlWhen the – SET SW is operated with the cruise control main SW turned on during travelling, the constant vehicle speed iscontrolled.
3. Coast ControlWhen the – SET SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve todecelerate the vehicle. Every time the – SET SW is turned on instantaneously, the vehicle speed is deceleratedapproximately 1.6 km/h.
4. Accel ControlWhen the + RES SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve toaccelerate the vehicle. Every time the + RES SW is turned on instantaneously, the vehicle speed is acceleratedapproximately 1.6 km/h.
5. Resume ControlWhen the vehicle speed is within the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, useof the + RES SW accelerates the vehicle to the speed level used before canceling the cruise control.
6. Manual Cancel MechanismIf any of the following signals is input during cruise control travelling, the cruise control is cancelled.∗ The stop lamp SW is turned on.∗ The CANCEL SW is turned on.∗ The main SW is turned off.∗ Gear is shifted from D position to other positions than D (A/T).∗ Clutch pedal depresed (M/T).
7. Auto Cancel FunctionIf any of the following conditions is encountered, the cruise control is automatically cancelled.∗ The stop lamp SW wiring is faulty or short–circuited.∗ The vehicle speed signal is faulty.∗ The electronically controlled throttle malfunctions.∗ The actual vehicle speed becomes –16 km/h slower than the set speed.∗ The actual vehicle speed becomes slower than the minimum speed limit.
8. Overdrive Control FunctionOverdrive is sometimes cut off on gradients during cruise control driving. When end of climbing gradient is determined bythrottle opening degree information after overdrive is canceled, control is reset to overdrive condition after overdrive resettingtimer operation. Also, when overdrive is cut off during accelerator resuming control, control is reset to overdrive conditionwhen accelerator resuming control is finished.
: Parts Location
Code See Page Code See Page Code See Page
A19 44 E7 D 44 J14 45
C9 44 E8 E 44 P1 41 (1GR–FE)
C14 44 J1 45S1
A 41 (1GR–FE)
D4 44 J5 45S1
B 41 (1GR–FE)
E1 A 40 (1GR–FE) J9 D 45 S8 45
E4 A 44 J10 E 45 S10 45
E5 B 44 J11 F 45 T1 41 (1GR–FE)
E6 C 44 J13 45 V1 41 (1GR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
System Outline
TOYOTA TACOMA (EM01D0U)
163
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IF1 55 Engine Wire and Engine Wire (Behind the Glove Box)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
: Ground Points
Code See Page Ground Points Location
EA 52 (1GR–FE) Front Right Fender
EB 52 (1GR–FE) Front Left Fender
EE 52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EF 52 (1GR–FE) Rear Side of Left Bank Cylinder Block
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
164
TOYOTA TACOMA (EM01D0U)
Cruise Control for 2TR–FE
20AEFI
G–W
2
2
3 2
5 1
2 2
2 2
2A11 2A30 1H3
1B62A332A9
EA EB
D1
+B
IA110 IA11
MREL
D8
BATT
D3
IF1
L
W–B
5 IF1
BR
BR
E2
A28
W–B
BR
1
M
M+VTA2VCVTA M–
G–B
VTA1
A20
G–W
VTA2
A19P
M+
A5
L
M–
A4
( Shi
elde
d)GE01
A8
6 5 4 2
T 1
L
VC
A18
L
1
BB
W–B
W–B
W–BB
B
W–B
L
G–W
G–W L
L
EG
W–B
3 B
ME01
W–B
7 B
E04
W–B
4 B
E03
BR
W–B
L
L
EFI
Rel
ay
E 4(A), E 5(B), E 7(C), E 8(D)
∗ 2 : w/o VSC∗ 1 : w/ VSC
C14
P 1
10AIG1NO. 2
1C14
( ∗1)
(∗1)
LG
DC13
DC12
LG
L
STP
C4
5 DD
3 DB
LG
(M/T)
L(∗2)
(∗1)
L
PC16 PE15
1
2
40 IA1
(M/T)
L–B
P
( A/T
)( A
/T)
Y
L–B
( A/T
)
( M/T
)
L–B
12 IH1
LG
13 1H
10AIG1
3 PB
L–B
21 C
D
DC14
Cru
ise
Con
trol
Clu
tch
SW
Engine Control Module
Par
k/N
eutra
lP
ositi
on S
W
Throttle Body Assembly
3 IF1
IF14
E2
3
D
2
7
(IG)(IG)(BAT)
6 1C
2 1B
L(∗1)
1J9
P
(M/T)
TOYOTA TACOMA (EM01D0U)
165
A
W–B
E02
Y–B
E1 E01
A
BR
A3 7
10AETCS
2
2
IA16
+BM
D7
B24
THO1
W–B
6
E 1(B)
B12
SLT+
B13
SLT–
B11
SLU+ SLU–
B
OT2–
OT2+ S2
10
S1SLU+
J12
SLU–
BR
1
SLT+ SLT–
OO
O G
8
EH
Y BR W B
S1
B9
S2
B8
G–B
R–B V LG W–G
L–W
LGLG
13 IA1LG
–B
EPA
D20
LG–B
5
12 IA1
R–Y
VPA
D18
R–Y
6
11 IA1
RVCPA
D26R
4
7 IA1
R–B
EPA2
D21
R–B
2
8 IA1
GR
–B
VPA2
D19
GR
–B
3
9 IA1
L–W
VCP2
D27
L–W
1
A19
BR
E 4(A), E 5(B), E 7(C), E 8(D)
15AIGN
1I15
O
IGSW
D9
V–W
2 IA1
3
42 3
1 5
4
2 2
222
10ASTOP
2
2
1
2
G–W
ST1–
( ∗1)
LL
G–B
S10
D
( ∗1)
( ∗1)
( ∗1)
STO
P L
P C
TRL
Rel
ay
OO
8 1C
V–W
16
( ∗2)L
LG
(∗1)
G–W
L(∗2)
Sto
p La
mp
SW
Accelerator Position Sensor
Electronically Controlled Transmission Solenoid
Engine Control Module
Junc
tion
Con
nect
or
EPA VPA VCPA EPA2 VPA2 VCP2
(BAT)(IG)(BAT)
L(∗1)
B1 B2 B6 B3 B7 B4 B8
B5
P
(M/T)
P
(M/T)
166
TOYOTA TACOMA (EM01D0U)
Cruise Control for 2TR–FE
BR
–W
CCS
2
C31
CCS
1
CANCEL
– SET
+ RES
Main
ECC
2
S 8
II1
BR
–W
Cru
ise
Con
trol S
W
PF8
PA18
EH
W–B
W–B
Spi
ral C
able
R–Y
36 IA1
C
SPD
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
(∗2)(∗1)12 A
18 B
Y BR B O
Speed Sensor(Rear)
(∗1)(∗2)
SP1
8
V–W
PC12
PD2
V–W
E 4(A), E 5(B), E 7(C), E 8(D)
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
G R L P
Speed Sensor(Front LH, RH)
PI
C18
LG
II17
LG
S 1(A), (B)Skid Control ECU with ActuatorEngine Control Module
B
CANH
C33 34 C
CANL
WL–
W
Y–B
2 D1 D
2 E1 E
J 9(
D) ,
J10(
E), J
11( F
)Ju
nctio
nC
onne
ctor
F1
P–B
P–B
DB
DA
9
2
D 4
TC
13
C
TC
17
Data Link Connector 3
14
CANLCANH
6
∗ 2 : w/o VSC∗ 1 : w/ VSC
W–B
2
IE
13
1
W–B
22 D
EC
W–B
J14
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
J13
W–B1
ST–Plug
LG
V–W
R–Y
P
(M/T)
P
(M/T)
( A/T
)
(A/T)
TOYOTA TACOMA (EM01D0U)
167
Spe
edC
ontro
l
1C16
1K13
V R
7. 5AECU–B
2
2
7. 5AGAUGE
1J3
R–Y
RVV
–W
CR
UIS
ELG W–B
IA
2
W–B
J 1
24 19 2
21 61
Junc
tion
Con
nect
or
Com
bina
tion
Met
erC
9
LG
V–W
R–Y
(BAT)(IG)
IH19 IH18
SE SI
Veh
iele
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
V 1
IG+
P
(M/T)
W
(M/T)
R–Y
(M/T)
32
1
PF7
PA4
(A/T)
W
( M/T
)
R–Y
( M/T
)
3
P
( M/T
)
P
( M/T
)
( A/T
)
R–Y
(M/T)
168
TOYOTA TACOMA (EM01D0U)
Cruise Control for 2TR–FE
The cruise control system is a constant vehicle speed controller in which control of the switch on the instrument panel makesit possible to automatically adjust the opening of the engine throttle valve without depressing of the accel pedal.
1. Set OperationWhen the main SW is turned on, the system starts preparations necessary for the cruise control and turns on the indicatorlight in the combination meter.
2. Set Speed ControlWhen the – SET SW is operated with the cruise control main SW turned on during travelling, the constant vehicle speed iscontrolled.
3. Coast ControlWhen the – SET SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve todecelerate the vehicle. Every time the – SET SW is turned on instantaneously, the vehicle speed is deceleratedapproximately 1.6 km/h.
4. Accel ControlWhen the + RES SW is kept turned on during cruise control travelling, the engine control module controls the throttle valve toaccelerate the vehicle. Every time the + RES SW is turned on instantaneously, the vehicle speed is acceleratedapproximately 1.6 km/h.
5. Resume ControlWhen the vehicle speed is within the low speed limit (Approximately 40 km/h, 25 mph) if the cruise control is cancelled, useof the + RES SW accelerates the vehicle to the speed level used before canceling the cruise control.
6. Manual Cancel MechanismIf any of the following signals is input during cruise control travelling, the cruise control is cancelled.∗ The stop lamp SW is turned on.∗ The CANCEL SW is turned on.∗ The main SW is turned off.∗ Gear is shifted from D position to other positions than D (A/T).∗ Clutch pedal depresed (M/T).
7. Auto Cancel FunctionIf any of the following conditions is encountered, the cruise control is automatically cancelled.∗ The stop lamp SW wiring is faulty or short–circuited.∗ The vehicle speed signal is faulty.∗ The electronically controlled throttle malfunctions.∗ The actual vehicle speed becomes –16 km/h slower than the set speed.∗ The actual vehicle speed becomes slower than the minimum speed limit.
8. Overdrive Control FunctionOverdrive is sometimes cut off on gradients during cruise control driving. When end of climbing gradient is determined bythrottle opening degree information after overdrive is canceled, control is reset to overdrive condition after overdrive resettingtimer operation. Also, when overdrive is cut off during accelerator resuming control, control is reset to overdrive conditionwhen accelerator resuming control is finished.
: Parts Location
Code See Page Code See Page Code See Page
A19 44 E8 D 44 P1 43 (2TR–FE)
C9 44 J1 45S1
A 43 (2TR–FE)
C14 44 J9 D 45S1
B 43 (2TR–FE)
D4 44 J10 E 45 S8 45
E1 B 42 (2TR–FE) J11 F 45 S10 45
E4 A 44 J12 45 T1 43 (2TR–FE)
E5 B 44 J13 45 V1 43 (2TR–FE)
E7 C 44 J14 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
System Outline
TOYOTA TACOMA (EM01D0U)
169
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IF1 55 Engine Wire and Engine Wire (Behind the Glove Box)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
: Ground Points
Code See Page Ground Points Location
EA 53 (2TR–FE) Front Right Fender
EB 53 (2TR–FE) Front Left Fender
EG53 (2TR–FE) Rear Side of Cylinder Block
EH53 (2TR–FE) Rear Side of Cylinder Block
IA 54 Left Kick Panel
IE 54 Right Kick Panel
170
TOYOTA TACOMA (EM01D0U)
Multiplex Communication System – CAN
1 A2 A
1 E 2 B B12 EC1C
CANHCANLCANHCANL
2
Y 1
D2 D1
S 1(A)
14
CANL CANH
6
D 4
32
5 IE1
S 9
15 IE1
9 10 34 33
W–L
B–W L–W
Y–B
L–W
Y–B W B
L Y
CANHCANLCANHCANL
E 7
J 6(
A), J
7( B
) , J
8(C
) , J
9(D
) , J1
0(E)
, J11
( F)
L Y
IA32 IA31
W–L
B–W
Skid Control ECUwith Actuator
Data LinkConnector 3
Steering Sensor Engine Control Module
Junc
tion
Con
nect
or
Yaw Rate Sensor
F1
IE
J131
W–B
W–B
JunctionConnector
ST–Plug
A25 A11
TOYOTA TACOMA (EM01D0U)
171
Multiplex communication system (CAN) uses a serial communication protocol and communicates with a differential voltage.In this network system, TERMINALS CANH and CANL are used for communication between the ECUs and sensors, andexcellent data communication speed and communication error detecting facility are provided.
This system is working for the following systems:∗ ABS ( w/ VSC)∗ Auto LSD∗ Cruise Control∗ Downhill Assist Control∗ Electronically Controlled Transmission and A/T Indicator∗ Engine Control∗ Hill–Start Assist Control∗ TRAC∗ VSC
: Parts Location
Code See Page Code See Page Code See Page
D4 44 J9 D 45 S1 A 43 (2TR–FE)
E7 44 J10 E 45 S9 45
J6 A 45 J11 F 45
Y1
47 (*1)
J7 B 45 J13 45 Y1 48 (*2)
J8 C 45 S1 A 41 (1GR–FE)
Y1
49 (*3)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA3 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
: Ground Points
Code See Page Ground Points Location
IE 54 Right Kick Panel
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
172
TOYOTA TACOMA (EM01D0U)
ABS, TRAC, VSC, Auto LSD, DAC and HAC
AA32
30AABSNO. 2
2
2
4 C
50AABSNO. 1
2F1
2
41 A
2F2
A31 A2 C2 3 A 17 A
15AIGN
1C17
C1 18 A
A10
IA315
4 A
IC
13
IB114 IB115W
–BIB15 IB16
A20 A6 A5 A19 1
EB EA
2A39
2A33
1212
2 1 4 3
GND1GND2GND3LBLRR–RR+RL–RL+NEO
W
S 1(A), S 2(C)
( 4W
D)
( 4W
D)
( 4W
D)
W
PLRG
S 4L
+BS
O
+BM1
B
W
B
+BM2
R
L
W–B
IG2
Y BR
FL+
BW
O
FL–
O
L
B
FR+
BR
S 3
Y
FR–
W–B
S22
W–B
V–W
L
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
B 2(
A)
J 5
15
Skid Control ECU with Actuator
Bra
ke F
luid
Lev
elW
arni
ng S
W
Spe
ed S
enso
r ( F
ront
LH
)
Spe
ed S
enso
r ( F
ront
RH
)
Junc
tion
Con
nect
or
Speed Sensor (Rear)
(IG)(BAT)(BAT)
A2
A1
TOYOTA TACOMA (EM01D0U)
173
18 IA1
DC
DD
6
3
28 A
DA
C
1
DC15
4 IA3
A27 21 A
IA141 IA142
4
14 A
3
IA139
PB6
PC19
3
4
PB5
PC18
( ∗2)
IH112
43 A44 A
P
( ∗2)
( ∗1)
( M/T
)
( ∗1)
AU
TOLS
D
A11 A25 A46 A30 C3 A29 A12
IA31 IA32 IA36 IA121 IA119 IA136
13 11
10 9
SP1WABRLBZIG1CANLCANHCSWHDCSPKB
Tran
sfer
Indi
cato
r S
W( L
4 P
ositi
on)
R–W
G–B
P
R–Y(A/T)
O
B–W
GR
LG
W–L
B–W
( A/T
)
W–B
( A/T
)
W–B
( ∗1)
P–B
( ∗2)
GR
–B
( 4W
D)
B–W
S 1(A), S 2(C)
W–L
( 4W
D)
LG GR
B–W O R–Y
( 4W
D)
G–Y
( A/T
)
G–Y
( 4W
D)
G–Y
P–B
( A/T
)
GR
–B
B–W
( M/T
)
W–L
(M/T)
GR
(A/T)
B–W O R–Y
W–B
W–B
W–B
W–B
LG–B
Y–B
LG–B
Y–B
BR
–WG
–B
R–W
EXI EXI4 P/R
AD
D A
ctua
tor
Ass
embl
y
A27
D 8
P 6
2
1
P 1
( A/T
)
B 1
Y
( M/T
)
Y
∗ 2 : w/ Auto LSD∗ 1 : w/ Downhill Assist Control
J14
Par
king
Bra
ke S
W
Skid Control ECU with ActuatorB
ack–
Up
Lam
p S
W
Aut
o LS
D S
W
Dow
nhill
Ass
ist
Con
trol S
W
Junc
tion
Con
nect
or
P
6
2
Par
k/N
eutra
lP
ositi
on S
W
174
TOYOTA TACOMA (EM01D0U)
ABS, TRAC, VSC, Auto LSD, DAC and HAC
17
7 A
IA3 IB113
PP
4
34 A
A45
36 A
IB1
33 A15 A35 A
IB112
16 A
IA316 IA318
1B2
1C1515 DD
7 DD2
2 2
15
4
S10 23 S
TOP
LP
CTR
LR
elay
1
2
9 1D
10AIG1NO. 2
2 2
26 A
2
2
1C14
A24 A13 A42
12 157 6
D 4
14
10ASTOP
LG
L–W
Y–B
R–W
Y
L–B(∗1)
LG–R(∗2)
L–W(4WD)
L–W(2WD)
R–Y(A/T)
O
B–W
GR
LG
W–L
B–W
W–B
W–B
R–W
INDVSCWHDCWINFRWT
TS SIL WFSE CANH CANL
LGL–
YL–
Y
R–B W V
Y–B
L–W
L
G–W
G–B
LLG
–W
R–WYL–
B
LG–R
L–W
YL–B
STPO
LG–R
( ∗1)
L–W
( 4W
D)
STP
L–W
( 2W
D)
R–Y(A/T)
WFSE
O
( ∗2)
B–W
D/G
GR
( ∗1)
LG
TS
W–L
( ∗2)
B–W
EXI3
W–B
W–B
STP2
G–W
L
LG
LG
DA7
DC2
DA10
DC7
S 1(A), S 2(C)
R–B W V
DB20
DC9Tran
sfer
Indi
cato
rS
W (
Rea
r D
iff. )
L–Y
( ∗4)
( ∗3)
∗ 1 : w/ Downhill Assist Control∗ 2 : w/ Auto LSD∗ 3 : w/ Rear Diff. Lock∗ 4 : w/o Rear Diff. Lock
Sto
p La
mp
SW
Skid Control ECU with Actuator
Data Link Connector 3
(IG)
(BAT)
TOYOTA TACOMA (EM01D0U)
175
(2W
D)
( 4W
D)
Spe
edC
ontro
l
Rev
erse
Rev
erse
AB
S
DA
C
VS
C O
FF
AU
TO L
SD
Slip
VS
C T
RA
C
BR
AK
E
A36 A38 B13 A35 A37 A6 B9 B10 A2
A1A21
ID27 ID26 ID12
ID11
3 A
LG
R
1J3
7. 5AGAUGE
1I1
1K1316 1C
7. 5AECU–B
2
2
( 2W
D)
LG
GR
LG
LG
L–W
Y–B
R–W
Y
L–B(∗1)
LG–R(∗2)
L–W(4WD)
L–W(2WD)
R–Y(A/T)
O
B–W
GR
LG
W–L
B–W
W–B
W–B W–B
W–B
B–W
W–L
W–B
Y–B
L–W
R
LG
R
R–W Y L–
B
LG–R
L–W
L–W
L–W
R–Y
( A/T
) O
B–W
W–B
V
C 9(A), C10(B)
( ∗1)
( ∗2)
13 1H
IH19 IH18
9 1J
10AIG1
PF7
PA4
IG+
3
P
SI
2
SE
1
( M/T
)
P
( M/T
)
P
( M/T
)
P
( M/T
)
R–Y
( M/T
)
W
( M/T
)
W
R–Y
( M/T
)
R–Y
V 1
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Combination Meter
(IG)
(BAT)(IG)
176
TOYOTA TACOMA (EM01D0U)
ABS, TRAC, VSC, Auto LSD, DAC and HAC
L
1 A2 A
1 E 2 B B12 E
LG
C1
DC12
DA13 C
DA12
3 DC
Buz
zer
2
D2 D1
IE
J131
GR
1
2
GR
LG LG
LG LG
DC13
LG
V 7
2 9 10 34 33
31
W–B
W–B
B–W
W–L
W–B
Y–B
L–W
R
LG
W–B
W–B
W–L
B–W
W–B
L–W
Y–B
LG R
W–B
L–W
Y–B W B L Y
CANHCANLCANHCANLESS
BAT1G
E 7S
9
2
J 6(
A), J
7( B
) , J
8(C
) , J
9(D
) , J1
0(E)
, J11
( F)
LG
Ste
erin
g S
enso
rEngine Control Module
VS
C W
arni
ng B
uzze
r
JunctionConnector
Junc
tion
Con
nect
or
DD6
LG–B
LG–B
Y
F1
W–B
ST–Plug
TOYOTA TACOMA (EM01D0U)
177
IE15 IE115
IA
J 14
1F10
1H18
2
1
523
W–B
W–B
W–B
Y L LG
IGCANL
GND
CANH
Y 1
W–B
BA
W–B
W–B
JunctionConnector
Yaw Rate Sensor
IE13
LG–B
IA314
LG–B
Y
L
LG–B
W–B
178
TOYOTA TACOMA (EM01D0U)
ABS, TRAC, VSC, Auto LSD, DAC and HAC
1. Normal OperationThe VSC system helps prevent the vehicle from slipping sideways as a result of strong front wheel skid or strong rear wheelskid during cornering.The followings are two examples that can be considered as circumstances in which the tires exceed their lateral grip limit.The VSC system is designed to help control the vehicle behavior by controlling the engine’s output and the brakes at eachwheel when the vehicle is under one of the conditions indicated below.∗ When the front wheels lose grip in relation to the rear wheels (Strong front wheel skid tendency).∗ When the rear wheels lose grip in relation to the front wheels (Strong rear wheel skid tendency).
2. Electronic Brake–Force DistributionSkid control ECU with actuator distributes appropriate brake–force to front and rear wheels (Control of brake–forcedistribution to front and rear wheels) corresponding to the vehicle driving conditions. It also makes effective use of rear wheelbrake–force to match loading condition and decelerating of the vehicle, resulting to reduce depressing of brake pedal and toensure effective braking. In braking during making a turn, the ECU controls appropriate brake–force distribution to right andleft wheels (Control of brake–force distribution to right and left wheels) to ensure stability and braking of the vehicle.
3. Downhill Assist Control OperationThe downhill assist control operation controls braking action of each wheel to help prevent out–of–balance vehicle posturewhen descending a steep hill or traveling at a speed exceeding the threshold of wheel gripping capability. When the downhillassist control is in operation, the brake system controls vehicle speed within the range of 5 to 7 km/h.For the downhill assist control to be operative all of the following conditions have to be met:∗ Downhill assist control switch = ON∗ Transfer L4 selected∗ Vehicle speed is 5 km/h or more, but less than 25 km/h.∗ Accelerator pedal OFF∗ Brake pedal OFF
4. Hill–Start Support Control OperationWhen starting on a steep hill for ascending, the hill–start support control automatically puts the brake on momentarily – fromthe moment when the driver releases his foot from the brake pedal until he steps on the accelerator pedal – to help the driverstart the vehicle safely and smoothly.Please bear in mind, however, that it activates the brake system for only 3 seconds.For the hill–start support control to be operative all of the following conditions have to be met:∗ Shift position = D, 2, or L∗ Vehicle not moving forward with some wheel(s) slipping∗ Vehicle speed > 0 km/h
5. Active TRAC (4WD)Active traction control system provides great effect of LSD (Limited Slip Differential) to deliver driving force lost due to theacceleration slip to each of 4 wheels by conducting the brake oil control on slipped wheels caused by acceleration during4WD driving.
6. Auto LSD (2WD)Auto LSD fulfills the function of LSD (Limited Slip Differential) by using the system of TRAC. It controls to focus on ’gettingout’, which ensures to recover from run–off condition and to take off on roads with much travel resistance such as sand.
System Outline
TOYOTA TACOMA (EM01D0U)
179
: Parts Location
Code See Page Code See Page Code See Page
A27 44 J8 C 45 S3 43 (2TR–FE)
B140 (1GR–FE) J9 D 45
S441 (1GR–FE)
B142 (2TR–FE) J10 E 45
S443 (2TR–FE)
B2 A40 (1GR–FE) J11 F 45 S9 45
B2 A42 (2TR–FE) J13 45 S10 45
C9 A 44 J14 45
S22
47 (*1)
C10 B 44P1
41 (1GR–FE) S22 48 (*2)
D4 44P1
43 (2TR–FE)
S22
49 (*3)
D8 44 P6 45V1
41 (1GR–FE)
E7 44S1 A
41 (1GR–FE)V1
43 (2TR–FE)
J1 45S1 A
43 (2TR–FE) V7 45
J5 45S2 C
41 (1GR–FE)
Y1
47 (*1)
J6 A 45S2 C
43 (2TR–FE) Y1 48 (*2)
J7 B 45 S3 41 (1GR–FE)
Y1
49 (*3)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
2A 24 Engine Room J/B (Engine Compartment Left)
2F 25 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA154 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IA354 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
ID154 Frame Wire and Instrument Panel Wire (Left Kick Panel)
ID254 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
180
TOYOTA TACOMA (EM01D0U)
ABS, TRAC, VSC, Auto LSD, DAC and HAC
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BA
56 (*1)
Floor Seat Cross Member LHBA 57 (*2) Floor Seat Cross Member LHBA
58 (*3)
Floor Seat Cross Member LH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
181
Memo
182
TOYOTA TACOMA (EM01D0U)
ABS
30AABSNO. 2
2
2
50AABSNO. 1
2
2
8IE118 IE1IE1
2
7IE1
3
IA310 IA3
IB114 IB115
12
IB15 IB16
BR
L
RL–
BR
RL+
W
S22
YY
S 3
13 IA3
EBEA
2 1 4 3
GND1 GND2 RR–RR+FL–FL+
L
STP
S 1(B)
12
L
W LP
15 1C
L
+BS+BM
17
R
1
Y
L
G R
W
BW
OOB
FR+
2
L
W–B
1B
W–B
W–B
W–B
IA311
VGSGGNDGL1
W–B
R
D 9W B
R W B
R W B
W–B
( Shi
elde
d)( S
hiel
ded)
( Shi
elde
d)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
GL1
( ∗1)
GGND
( ∗1)
VGS
1
2
2
2
10ASTOP
G–W
FR–
12
S 4
∗ 2 : w/ Rear Diff. Lock∗ 1 : 4WD, Prerunner
∗ 3 : w/o Rear Diff. Lock
S10
P–B
TC
P–B
8 DC
2 DA DA10
DC7
W
D/G
W
DA7
DC2
R–B
TS
R–B
D 4
TC
13
SIL
7
TS
12
W–B
∗ 4 : 1GR–FE A/T∗ 5 : 2TR–FE A/T
Sto
p La
mp
SW
Spe
ed S
enso
r ( F
ront
LH
)
Spe
ed S
enso
r ( F
ront
RH
)
Skid Control ECU with Actuator
Data Link Connector 3
Deceleration Sensor
Speed Sensor (Rear)
(BAT)(BAT)(BAT)
B4 B8 B37 B31 B2 B14 B21 B13 B20
B45B44B16B15B39B40B9B10B32B1
TOYOTA TACOMA (EM01D0U)
183
IA1
DC
DD
6
3
14 9
1
DC15
1C
LG
EXI
LG–B
3 DC
13 DC DD7
DD15
4 IB1
( M/T
)
P
13 1H
10AIG1
PKB
G–Y
( A/T
)
G–Y
G–Y
1D
LGL–
Y
EXI2
O
WA BRL
Tran
sfer
Indi
cato
r S
W( L
4 P
ositi
on)
AD
D A
ctua
tor
Ass
embl
y
( 4W
D)
Y–B
LG–B
( 4W
D)
( 4W
D)
Y–B
( 4W
D)
SP1
42 IA1
19 IA1 21 IA1
EXI4
36 IA1
LG
IG1
41
B–WR–Y
O
B–WR–Y
S 1(B)
10AIG1NO. 2
L–Y
96
P 1
IH112
Y
2
PB8
PC11
( A/T
)
( A/T
)
G–B
G–W
PB5
PC18
P 6
N
38 IA1
G–W
G–W
P
39 IA1
G–B
G–B
( A/T
)
G–B
( ∗4)
L–W
( ∗5)
G–W
( A/T
)
( A/T
)( A
/T)
( A/T
)
P
(M/T)
( A/T
)( A
/T)
B–W
O
R–Y
(A/T)
1J9
L–Y
( ∗3)
( ∗2)
Tran
sfer
Indi
cato
rS
W (
Rea
r D
iff. )
Par
king
Bra
ke S
W
Skid Control ECU with Actuator
Par
k/N
eutra
lP
ositi
on S
W
(IG)(IG)
B24 B38 B46 B7
B6B36B43B17B18B23
P
N
184
TOYOTA TACOMA (EM01D0U)
ABS
Spe
edC
ontro
l
Rev
erse
Rev
erse
BR
AK
E
AB
S
A6B10 B9 A2
A21
1J3V
IA
J 12
7. 5AGAUGE
R–Y
B–W O
W–B
C 9
( A) ,
C10
( B)
P
(M/T)
IH19 IH18
PF7
PA4
IG+
1
SE
2
SI
3
( M/T
)
W
W R–Y
P
V 1
P
( M/T
)
( M/T
)
( M/T
)( M
/T)
( M/T
)
R–Y
A3
( A/T
)
B–W
O
R–Y
(A/T)
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Com
bina
tion
Met
er
JunctionConnector
(IG)
TOYOTA TACOMA (EM01D0U)
185
This system controls the respective brake fluid pressures acting on the disc brake cylinders of the right front wheel, left frontwheel and rear wheels when the brakes are applied in a panic stop so that the wheels do not lock. This results in improveddirectional stability and steerability during panic braking.
1. Input Signals(1) Speed sensor signal
The speed of the wheels is detected and input to TERMINALS (B) 10, (B) 15, (B) 40 and (B) 44 of the skid control ECUwith actuator.
(2) Stop lamp SW signalA signal is input to TERMINAL (B) 14 of the skid control ECU with actuator when the brake pedal is depressed.
2. System OperationDuring sudden braking the skid control ECU with actuator has signals input from each sensor, which controls the current tothe solenoid inside the actuator and lets the hydraulic pressure acting on each wheel cylinder escape to the reservoir. Thepump inside the actuator is also operating at this time and it returns the brake fluid from the reservoir to the master cylinder,thus preventing locking of the vehicle wheels.If the skid control ECU with actuator judges that the hydraulic pressure acting on the wheel cylinder is insufficient, the currenton the solenoid is controlled and the hydraulic pressure is increased. Holding of the hydraulic pressure is also controlled bythe skid control ECU with actuator, by the same method as above. Pressure reduction, holding and increase are repeated tomaintain vehicle stability and to improve steerability during sudden braking.
: Parts Location
Code See Page Code See Page Code See Page
C9 A 44 P1 43 (2TR–FE) S10 45
C10 B 44 P6 45
S22
47 (*1)
D4 44S1 B
41 (1GR–FE) S22 48 (*2)
D9
46 (*1)S1 B
43 (2TR–FE)
S22
49 (*3)
D9 48 (*2)S3
41 (1GR–FE)V1
41 (1GR–FE)D9
49 (*3)S3
43 (2TR–FE)V1
43 (2TR–FE)
J1 45S4
41 (1GR–FE)
P1 41 (1GR–FE)S4
43 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1H29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
DA 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
186
TOYOTA TACOMA (EM01D0U)
ABS
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA154 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IA354 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
TOYOTA TACOMA (EM01D0U)
187
SRS
NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructionsand the procedure, and precautions in the Repair Manual applicable for the model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of informationwhen troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started more than 90 seconds after the ignition SW is turned to the ”LOCK” position and thenegative (–) terminal cable is disconnected from the battery.(The SRS is equipped with a back–up power source so that if work is started within 90 seconds fromdisconnecting the negative (–) terminal cable of the battery, the SRS may deploy.)
When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will becleared. So before starting work, make a record of the contents in the audio memory system. When work is finished,reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, powertelescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.However, it is not possible to make a record of these memory contents. So when the work is finished, it will benecessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoiderasing the memory in each system, never use a back–up power supply from outside the vehicle.
Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair.
Do not expose the following parts directly to hot air or flame;
Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected;
Never use SRS parts from another vehicle. When replacing parts, replace with new parts.
For the purpose of reuse, never disassemble and repair the following parts.
If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector,replace with new one.
Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system.
Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice.
After work on the SRS is completed, check the SRS warning light.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the RepairManual.
∗ Steering wheel pad∗ Front passenger airbag assembly∗ Side airbag assembly∗ Curtain shield airbag assembly∗ Seat belt pretensioner∗ Center airbag sensor assembly∗ Front airbag sensor assembly∗ Side airbag sensor assembly∗ Rear airbag sensor assembly
188
TOYOTA TACOMA (EM01D0U)
SRS
7. 5AGAUGE
8
1J3
33
21
II16
A14
LA
( ∗1)
( ∗2)
10AIG1
1J9P
PF7
13 PF
A17
P–AB
A23
PAON
BF21 BF22
B2
PD+
B1
PD–
1 2
L–W V
V
P
Y–B
Y–B
Y–B Y
Y
Y
BG22 BG21
C4
PP+
C5
PP–
1 2
Y–B
Y–B
Y–B Y
Y
Y
F17 F18
1 2
IG13 IG14 IG11 IG12
A4
P+
A3
P–
A1
P2+
A2
P2–
A1 A2 B1 B2
SpiralCable
4 3
A5
D+
A6
D–
A8
D2+
A7
D2–
IB
A25
E1
1H19
1H18
A26
E2
IA
4
IG+
GR
–B
3
5
SW–
12
AIR
A13
PBEW
( ∗1)
( ∗2)
( ∗1)
GR
–BG
RG
R
( ∗1)
Rev
erse
( ∗1)
( ∗1)
C 9
J 1
A26 A24(A), A25(B)
H 7
( ∗2)
A21(A), A22(B), A23(C)
SR
S
B–Y
W–B
W–B
Y–B Y Y–V
Y–O
W–B
W–B
Y–B Y
Y–R
Y–G
Y–R
Y–G
Y–G
R
L–Y
B–Y
( ∗3)
( ∗2)
( ∗1)
( ∗1)
PBEW
( ∗3)
( ∗3)
IL12
IL11
( ∗3)
Airbag Squib(Steering Wheel Pad)
Airbag Squib(Front Passenger' s Airbag Assembly)
Airbag Sensor Assembly Center
Front Seat OuterBelt (RH)
Front Seat OuterBelt (LH)
JunctionConnector
Com
bina
tion
Met
er
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
(IG)(IG)
Pretensioner Pretensioner
TOYOTA TACOMA (EM01D0U)
189
IA24 IA23
A30
+SL
A28
–SL
IA22 IA21
A29
+SR
A27
–SR
1
–SR+SL –SL
2 1
+SR
2
B9
SFD+
B10
SFD–
1 2
Y–R
Y–G
S26
C7
SFP+
C6
SFP–
1 2
Y–R
Y–G
S27
B7
ICD+
B6
ICD–
1 2
Y–V
Y–O
C16
C9
ICP+
C10
ICP–
1 2
Y–V
Y–O
C17
B8
BBD+
B15
BBD–
BCL+ BCL–
BBL–
BCL+ BCL–
1 2
3
2 1
C8
BBP+
C11
BBP–
BCR+ BCR–
BBR+ BBR–
BCR+ BCR–
1 2
4 3
2 1
SFR+ SFR–SFL–SFL+
A11
MSW+ MSW–
1 2
L G
A20
PMC+ PMC–
12 A
A11 A12 S13 S14
S11
S12
A21(A), A22(B), A23(C)
W–G BR
B–W
BR
–W
W–G BR
B–W
BR
–W
P–L
GR
–L
L–W
LG–B
L–Y
LG
P GR
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗5)
( ∗5)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
( ∗4)
BBL+
4
∗ 2 : Except Access Cab∗ 1 : Access Cab
∗ 3 : Separate Seat∗ 4 : w/ Side Airbag∗ 5 : Except Double Cab
Airbag Sensor(Front LH)
Airbag Sensor(Front RH)
Side Airbag Sensor(Rear LH)
Side Airbag Sensor(Rear RH)
Airbag Sensor Assembly Center
Side AirbagSquib (RH)
Side AirbagSquib (LH)
Curtain ShieldAirbag Squib (LH)
Curtain ShieldAirbag Squib (RH)
Airbag CutOff SW
Sid
e A
irbag
Sen
sor
( Fro
nt L
H)
Sid
e A
irbag
Sen
sor
( Fro
nt R
H)
190
TOYOTA TACOMA (EM01D0U)
SRS
A22
GSW2
32
( ∗6)
( ∗6)
II110
B11
DBE+
12
BK12
2 1 43
Seat PositionAirbag Sensor
BK11 BK13 BK14
B12
DBE–
B14
DSP+
B13
DSP–
F/PS
A15
TC
A16
SIL
7
SIL
DA2 DA10
DB19 DB17
C13
FSP–
C12
FSP+
2 1
DB8
( ∗3)
RR
F23
F20 S25
D 4E 7
A21(A), A22(B), A23(C)
G–Y B
G–Y B
G–W R–B
G–W R–B
G–W
B–G
G–Y B
P–B
( ∗6)
W
( ∗6)
( ∗6)
P–B
( ∗6)
W
( ∗6)
( ∗6)
( ∗3)
W(∗3)
( ∗3)
G–B(∗6)
( ∗3)
G–R(∗6)13
TC
Data Link Connector 3
Airbag Sensor Assembly Center
Engine ControlModule
Front Seat InnerBelt (Driver' s Side)
Front Seat InnerBelt (Driver' s Side)
Seat PositionAirbag Sensor(Driver' s Side)
A21
IG2
O
O
W(∗6)
P( ∗
6)
GSW3
24 A
P(∗6)
G–R(∗3)
G–B(∗3)
G–B
( ∗6)
G–B
( ∗3)
G–R
( ∗6)
G–R
( ∗3)
W( ∗
3)
W( ∗
6)
BL13 BL14 BL12 BL11
G–Y
( ∗6) B ( ∗6)
G–W ( ∗6)
R–B ( ∗6)
TOYOTA TACOMA (EM01D0U)
191
SIG3
2
( ∗3)
2 1
2
SIG1
B8
FSR+
B4
FSR–
B1
+B
B7
IG
BH15 BH16 BH13BH12
IL16IL17
7. 5AECU–B
( ∗3)
2
( ∗3)
2
15AIGN
( ∗3)
( ∗3)
1I13
( ∗3)
( ∗3)
A11
SVC1
A1
SGD1SIG1
7 A A12
SVC2
A2
SGD2SIG2
8 A
A5
SVC3
A9
SIG3
A3
SGD3
A6
SVC4
A10
SIG4
A4
SGD4
B9
BSW
B5
BGND
B2
DIA
BH11
IL18
B3
GND
BH14
IL14
13
7
IE
2
O 6 O 7
O 8 O 9
J14
J13
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
W(∗3)
G–B(∗6)
G–R(∗6)
B–O
R–B
P–G
GR
–L
L–R
B–RB
P–G
G–R
G–B W RO
O RW
R
B–L G L
LG–B
R–L O
W–B
W–B
W–B
W–B
SVC3
1
SGD3
3
SVC4
1
SIG4
2
SGD4
3
1
SVC1
3
SGD1
1
SVC2
2
SIG2
3
SGD2
( ∗3)
( ∗3)
∗ 6 : Bench Seat∗ 3 : Separate Seat
JunctionConnector
JunctionConnector
Occupant ClassificationSensor (Front LH)
Occupant ClassificationSensor (Front RH)
Occupant ClassificationSensor (Rear LH)
Occupant ClassificationSensor (Rear RH)
O 201H
(BAT)(IG)
W(∗6) W(∗6)
O(∗6)
( ∗3)
W–B(∗6)
O(∗6)
Fron
t Sea
t Inn
er B
elt
( Fro
nt P
asse
nger
's
Sid
e)
F25
P(∗6) P(∗6)
1I5 1C16
R ( ∗3)
R(∗3)
O ( ∗3)
O ( ∗3)W ( ∗3)
G–R(∗3)
G–B(∗3)
G–B(∗6)
G–R(∗6)
W–B(∗6)
Occupant Classification ECUO 4(A), O 5(B)
192
TOYOTA TACOMA (EM01D0U)
SRS
O10Occupant Classification ECU
OO
( ∗6)
( ∗6)
7 IL1
2 BJ2
9
IG
GND
5
BJ23
IL14
W–B
( ∗6)
W–B
( ∗6)
10
WW
( ∗6)
( ∗6)
8 IL1
1 BJ2
DIA
W(∗6)
O(∗6)
W–B(∗6)
1
PP
( ∗6)
( ∗6)
3 IL1
9 BJ2
GSW4
P(∗6)P
–GB ( ∗6)
( ∗6)
BGNDBSW
12
Fron
t Sea
t Inn
er B
elt
( Fro
nt P
asse
nger
's
Sid
e)
F24
13 14
1211
G–R ( ∗6)
4 BJ2
FSR+
G–B
( ∗6)
5 BJ2
FSR–
G–B(∗6)
G–R(∗6)
4
LGR
( ∗6)
( ∗6)
GSP
3
SP
8
GG
( ∗6)
( ∗6)
8 BJ2
GBT
17V
V
( ∗6)
( ∗6)
7 BJ2
VBT
16
LGLG
( ∗6)
( ∗6)
6 BJ2
BT
3 2 1
6
R–B ( ∗6)
PS
15
LG–B
( ∗6)
GPS
7
L–W
( ∗6)
VPS
2
PS
1
GPS
3
VPS
Occupant Classification SensorO11
G–B
( ∗6)
G–R ( ∗6)
O ( ∗6)W ( ∗6) P ( ∗6)
∗ 6 : Bench Seat
12
Sea
t Pos
ition
Airb
ag S
enso
r( F
ront
Pas
seng
er'
s S
ide)
S28
BTVBTGBT
Seat Belt Tension SensorS29
TOYOTA TACOMA (EM01D0U)
193
∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the frontairbag sensor and deceleration sensor.– Driver Airbag– Front Passenger Airbag– Seat Belt Pretensioner
∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the sideairbag sensors.– Side Airbags– Curtain Shield Airbags
∗ The dual–stage SRS airbag system has been used for the driver and front passenger airbags. This system controls theoptimal airbag inflation by judging the extent of impact, seat position (driver seat), whether or not the seat belt is fastened(driver seat) and information from the front passenger occupant classification system.
∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult orchild (with child seat) or is unoccupied, according to the load applied to the front passenger seat and whether the seat beltis buckled. Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, andfront passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through theuse of the AIRBAG ON/OFF indicator lights.
∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult orchild (with child seat) or is unoccupied, according to the load applied to the front passenger seat, seat position(passenger), the load applied to the belt tension sensor (passenger), and whether the seat belt is buckled (passenger).Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, and frontpassenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through the use ofthe AIRBAG ON/OFF indicator lights.
∗ The airbag manual ON–OFF switch is used to disable the deployment of the front and side airbags for the front passenger,such as when a child seat is installed on the front passenger seat.
∗ The airbag sensor assembly transmits a signal to the engine control module in order to stop the fuel pump when theairbag is deployed.
: Parts Location
Code See Page Code See Page Code See Page
A1140 (1GR–FE)
F17
46 (*1) O6 50 (*4)A11
42 (2TR–FE) F17 48 (*2) O7 50 (*4)
A1240 (1GR–FE)
F17
49 (*3) O8 50 (*4)A12
42 (2TR–FE)
F18
46 (*1) O9 50 (*4)
A20 44 F18 48 (*2) O10 51 (*5)
A21 A 44
F18
49 (*3) O11 51 (*5)
A22 B 44 F20 50 (*4) S11 47 (*1)
A23 C 44 F23 51 (*5) S12 47 (*1)
A24 A 44 F24 51 (*5) S13 47 (*1)
A25 B 44 F25 50 (*4) S14 47 (*1)
A26 44 H7 45 S25 51 (*5)
C9 44 J1 45 S26 50 (*4)
C16 46 (*1) J13 45 S27 50 (*4)
C17 46 (*1) J14 45 S28 51 (*5)
D4 44 O4 A 50 (*4) S29 49 (*3)
E7 44 O5 B 50 (*4)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
194
TOYOTA TACOMA (EM01D0U)
SRS
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PF 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IG1 55 Instrument Panel Wire and Instrument Panel Assembly Wire (Behind the Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BF2 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
BG2 57 (*2) Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)
BH1 60 (*4) Floor Wire and Seat No.1 Wire (Under the Front Passenger’s Seat)
BJ2 61 (*5) Floor Wire and Seat No.1 Wire (Under the Front Seat RH)
BK1 61 (*5) Floor No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)
BL1 61 (*5) Seat No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IB 54 Instrument Panel Brace LH
IE 54 Right Kick Panel
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
195
Memo
196
TOYOTA TACOMA (EM01D0U)
Power Window
20ADR LCK
ECUB
7. 5AECU–B
ALTB
2
2
16 1C
2 5
1 3
1A6
50AJ/B
PWS
2
2
30AD FRP/W
20AP RRP/W
20AD RRP/W
20AP FRP/W
1H161F171H141H18
1H1
IK19 BA16 IL26
R RLW W W
W–B W W W
1
1346
GND
R
BB16
IC14
( ∗1)
P/WRelay
( ∗1)
( ∗1)
Body ECU
( ∗1)
W(∗1)
W(∗1)
W
W–B
R
5 IL1
1
R–B ( ∗1)
( ∗2)
R–B
20
PCTY
BG12
1I8
D12
R–B ( ∗2)
R–B
G–Y
( ∗1)
DCTY
26
1
1F7
BF12
G–Y
( ∗2)
G–Y
( ∗2)
D11
10AIG1NO. 2
IG
5 2
1
Doo
r C
ourte
sy S
W( F
ront
Pas
seng
er'
s S
ide)
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
(BAT)(IG)(BAT)(BAT)
TOYOTA TACOMA (EM01D0U)
197
IC
Front Passenger' s
Up
Dow
n
B9 (∗2)A7 (∗1)
Aut
oD
own
(∗2)(∗1)
4
L
A94 AB4
P10
B3
2 1
A1B1
IA
J 15
L–B
W–B
W–B
IC18
W–B
(∗1)B8
12
W
SDSU
DU
Dow
n
Up
13
25
IC12 IC13
P11
7 IK1 IK18
A15A18
W
B (∗2)
L–Y
10
B
L–Y B
L–Y B
L L–B
P 9(A), (B)
∗ 2 : Access Cab∗ 1 : Double Cab
W(∗1)
W(∗1)
W(∗1)
W(∗1)
W–B
R
B
4
P14
JunctionConnector Power Window Regulator
Motor (Front RH)
Pow
er W
indo
w S
W( F
ront
Pas
seng
er'
s S
ide)
Power Window RegulatorMotor (Front LH)
Power Window Master SW
M
M
198
TOYOTA TACOMA (EM01D0U)
Power Window
Win
dow
Loc
k S
W
Lock
Nor
mal
Rear LH
Up
Dow
n
Rear RH
Up
Dow
n
12
SDSU
DU
Dow
n
Up
51
42
IC15 IC16
P13
IL25 IL21
8 BB1 BB17
P12
A16 (∗1)
W(∗1)
W(∗1)
A10
12
SDSU
DU
Dow
n
Up
51
42
IC17 IC11
IE120 IE110
8 BA1 BA17
A13A12
G
G–B G
G
( ∗1)
( ∗1)
G–B
G
( ∗1)
( ∗1)
G–B
G–B
( ∗1)
( ∗1)
B
3
B
3
G–W
G–R ( ∗1)
( ∗1)
G–W
G–R ( ∗1)
( ∗1)
( ∗1)
( ∗1)
G–R
G–W
( ∗1)
( ∗1)
W( ∗
1)
G–B G
W( ∗
1)
( ∗1)
( ∗1)
L L–B L L–B
P 9(A), (B)
∗ 1 : Double Cab
P15
P16
Power Window Master SW
Pow
er W
indo
w S
W( R
ear
RH
)
Power Window RegulatorMotor (Rear RH)
Pow
er W
indo
w S
W( R
ear
LH)
Power Window RegulatorMotor (Rear LH)
MM
TOYOTA TACOMA (EM01D0U)
199
With the ignition SW turned on, current flows through the IG1 NO.2 fuse to TERMINAL 5 of the body ECU to TERMINAL 13to TERMINAL 1 of the P/W relay to TERMINAL 2 to GROUND, activating the P/W relay, and the current flowing fromTERMINAL 3 of the P/W relay flows to TERMINAL 5 to D FR P/W fuse to TERMINAL (A) 7 (Double cab), (B) 9 (Access cab)of the power window master SW, P FR P/W fuse to TERMINAL 4 of the power window SW (Front passenger’s side), D RRP/W fuse to TERMINAL 3 of the power window SW (Rear LH), P RR P/W fuse to TERMINAL 3 of the power window SW(Rear RH).
1. Manual Operation (Driver’s Window)With the ignition SW turned on and with the power window master SW (Manual SW) in UP position, the current flowing toTERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window master SW flows to TERMINAL (A) 4 (Double cab),(B) 3 (Access cab) to TERMINAL 2 of the power window regulator motor (Front LH) to TERMINAL 1 to TERMINAL (A) 9(Double cab), (B) 4 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) to GROUND andcauses the power window regulator motor to rotate in the up direction. The window ascends only while the SW is beingpushed.In down operation, the current flowing from TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window masterSW to TERMINAL (A) 9 (Double cab), (B) 4 (Access cab) flows to TERMINAL 1 of the motor LH to TERMINAL 2 toTERMINAL (A) 4 (Double cab), (B) 3 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) toGROUND, flowing in the opposite direction to manual up operation, causing the motor to rotate in reverse and lowering thewindow.
2. Auto Down Operation (Driver’s Window)With the ignition SW on and with the auto SW of the power window master SW in DOWN position, the current flowing toTERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the master SW flows to TERMINAL (A) 9 (Double cab), (B) 4 (Accesscab) of the master SW to TERMINAL 1 of the power window regulator motor (Front LH) to TERMINAL 2 to TERMINAL (A) 4(Double cab), (B) 3 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) to GROUND,causing the motor to rotate towards the down side.Then the solenoid in the master SW is activated and it locks the auto SW being pushed, causing the motor to continue torotate in auto down operation.When the window has completely descended, the current flowing between TERMINAL (A) 4 (Double cab), (B) 3 (Accesscab) of the master SW and TERMINAL (A) 1 (Double cab), (B) 1 (Access cab) increases. As a result, the solenoid stopsoperating, the auto SW turns off and the flowing from TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the master SW toTERMINAL (A) 9 (Double cab), (B) 4 (Access cab) is cut off, stopping the motor so that auto stop occurs.
3. Stopping of Auto Down at Driver’s WindowWhen the manual SW (Driver’s) is pushed to the up side during auto down operation, a ground circuit opens in the masterSW and current does not flow from TERMINAL (A) 4 (Double cab), (B) 3 (Access cab) of the master SW to TERMINAL (A) 1(Double cab), (B) 1 (Access cab), so the motor stops, causing auto down operation to stop. If the manual SW is pushedcontinuously, the motor rotates in the up direction in manual up operation.
4. Manual Operation by Power Window Control SW (Front RH Window)With the power window SW (Front passenger’s side) is pushed to the up side, the current flowing from TERMINAL 4 of thepower window SW (Front passenger’s side) flows to TERMINAL 3 to TERMINAL 2 of the power window regulator motor(Front RH) to TERMINAL 1 to TERMINAL 1 of the power window SW (Front passenger’s side) to TERMINAL 2 toTERMINAL (A) 15 (Double cab), (B) 10 (Access cab) of the master SW to TERMINAL (A) 1 (Double cab), (B) 1 (Access cab)to GROUND. This causes the power window regulator motor (Front RH) to rotate in the up direction. Up operation iscontinuous only while the power window control SW RH is pushed to the up side. When the window descends, the currentflowing to the motor flows in the opposite direction, from TERMINAL 1 to TERMINAL 2, and the motor rotates in revers.When the window lock SW is pushed to the lock side, the ground circuit to the front RH window becomes open. As a result,even if Open/Close operation of the front RH window is tried, the current from TERMINAL (A) 1 (Double cab), (B) 1 (Accesscab) of the power window master SW is not grounded and the motor does not rotate, so the front RH window can not beoperated and window lock occurs.
System Outline
200
TOYOTA TACOMA (EM01D0U)
Power Window
5. Manual Operation (Rear LH, RH Window) [Double Cab]With the power window SW (Rear LH, RH) pulled to the up side, the current flowing from TERMINAL 3 of the power windowSW flows to TERMINAL 1 to TERMINAL 2 of the power window regulator motor to TERMINAL 1 to TERMINAL 5 of thepower window SW to TERMINAL 4 to TERMINAL (A) 13 (LH) or (A) 16 (RH) of the master SW to TERMINAL (A) 1 toGROUND and causes the power window regulator motor (Rear LH, RH) to rotate in the up direction. The up operationcontinues only while the power window control SW is pulled to the up side. When the window descends, the current flowingto the motor flows in the opposite direction, from TERMINAL 2 to TERMINAL 1, and the motor rotates in reverse. When thewindow lock SW is pushed to the lock side, the ground circuit to the rear LH, RH window becomes open.As a result, even if Open/Close operation of the rear LH, RH window is tried, the current from TERMINAL (A) 1 of the powerwindow master SW is not grounded and the motor does not rotate, so the rear LH, RH window can not be operated andwindow lock occurs.
6. Key Off Power Window OperationWith the ignition SW turned from on to off, the body ECU operates for about 45 seconds and current flows from TERMINAL 1of the P/W relay to TERMINAL 2 to GROUND. For this period, current also flows TERMINAL 1 to TERMINAL 2. This currentflows to TERMINAL (A) 7 (Double cab), (B) 9 (Access cab) of the power window master SW and to TERMINAL 4 (Front RH),3 (Rear) of the power window SW. As a result, for about approx. 43 seconds after the ignition SW is turned off, it is possibleto raise and lower the power window by the functioning of the body ECU. Also, by opening the door (Door courtesy SW on)within about 45 seconds after turning the ignition SW to off, a signal is input to the body ECU. As a result, the body ECUturns off, and up and down movement of the window stops.
: Parts Location
Code See Page Code See Page Code See Page
D1146 (*1) P9 B 48 (*2) P13 47 (*1)
D1148 (*2)
P1047 (*1)
P1447 (*1)
D1246 (*1)
P1048 (*2)
P1448 (*2)
D1248 (*2)
P1147 (*1) P15 47 (*1)
J1 45P11
48 (*2) P16 47 (*1)
P9 A 47 (*1) P12 47 (*1)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1I29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC1 54 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IK1 55 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL155 Instrument Panel Wire and Floor Wire (Right Kick Panel)
IL255 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BA1 56 (*1) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)
BB1 56 (*1) Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
BG1 57 (*2) Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
201
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
202
TOYOTA TACOMA (EM01D0U)
Door Lock Control
1K10
2
1
( ∗1)
10AIG1 NO. 2
20ADR LCK
7. 5AECU–B
2
2
1C16
V
W–R
Unl
ock
Lock
W–B
G–B
Unl
ock
Lock
3
6 5
V L–B
IC36
W–R
IC37
G–B
L–B
IK38
W–B
IK37
W–B
W–B
7 1I
W–B
1I3
L–R
W–B
1I14
W–B
1I18
B5 (∗4)A8 (∗3)
B2A5
A1 (∗3)B1 (∗4)
IC18 IK39
1H18
910
Key
Loc
k
Key
Unl
ock
8
7
M
1
4
IC310 IC38 4 IC3 IC39
A20 A23
W–B
A3
IA
L–R
IC35
W–B
L1 UL1 GND KSW LSWD
A5
B5
UL3 ACTD LSWP
A19
B15
IC
V
5 4 6
54 1 6
12 10 1 9 A11
G–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
( ∗2)
L–W
GR
( ∗1)
L–W
GR
( ∗2)
GR
ECUB
L–W
( ∗2)
GR
ALTB
L–W
( ∗2)
RIG
W–B
P 9(
A), (
B)
U 1
J 1
D19( ∗
2)
( ∗2)
B 5(A)
W–B
W–B
D23
W–B
( ∗2)
(∗1)
B–W
J 4(
A), J
5( B
)
1F10
W–B
W–B
Unl
ock
War
ning
SW
Body ECU
JunctionConnector
Junc
tion
Con
nect
or
Doo
r Lo
ckC
ontro
l SW
Pow
er W
indo
wM
aste
r S
W
Door Lock Assembly(Driver' s Side)
(BAT)(BAT)(IG)
Det
ectio
n S
W
TOYOTA TACOMA (EM01D0U)
203
UL2 ACT–
W–B
ACT+
W–B
L–R
B–W
(∗1)
V P L–B
L–R
V P L–B
L–R
L–B
L–R
L–B
L–R
L–R
L–B
L–R
L–B
L–R
L–B
L–R
W–B
2
L2
1F
V
56
Key
Loc
k
Key
Unl
ock
B–W
7
8
M
1
4
IK15
4
IK34IK35IK36IC110 IK110
1I17
6
1H24
5
1I4 1I19 1H5
14
1H23
16 3
IK310
2
13
IE
( ∗3)
J132
11
1F1 1H4 1H22
IL27 IL23
BB12BB13BA12BA13
M M
W–B
( ∗1)
( ∗1)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
( ∗3)
J14
D20
( ∗3)
( ∗3)
( ∗3)
( ∗3)
D22
D21
B 5(A)
∗ 2 : w/o Door Lock Control∗ 1 : w/ Door Lock Control
∗ 3 : Double Cab∗ 4 : Access Cab
L–R
L–R
B–W
V
B–O
( ∗6)
( ∗5)
( ∗6)
BA
1
2
1
2
BI22
BI21
1F9
B–O
B–O
W–B
W–B
W–B
( ∗6)
( ∗5)
F22
F21
( ∗6)
W–B
1J13
A21
DBKL
B–O
∗ 5 : Separate Seat∗ 6 : Bench Seat
W–B W–B
Body ECU
JunctionConnector
JunctionConnector
Door Lock Assembly(Front Passenger' s Side)
Doo
r Lo
ck A
ssem
bly
( Rea
r R
H)
Doo
r Lo
ck A
ssem
bly
( Rea
r LH
)
Fron
t Sea
t Inn
er B
elt
( Driv
er'
s S
ide)
Fron
t Sea
t Inn
er B
elt
( Driv
er'
s S
ide)
4
Det
ectio
n S
W
204
TOYOTA TACOMA (EM01D0U)
Door Lock Control
1. Manual Unlock OperationWhen the door lock control SW of the driver’s or passenger’s side door is pushed to UNLOCK, the door lock will unlock.
2. Manual Lock OperationWhen the door lock control SW of the driver’s or passenger’s side door is pushed to LOCK, the door lock will lock.
3. Door Key Unlock Operation∗ Unlock operation from driver’s side doorWhen the driver’s side door is unlocked once using the ignition key, only the driver’s side door is unlocked. If this operation isrepeated within 3 seconds, all the other doors are unlocked.∗ Unlock operation from front passenger’s side doorWhen the front passenger’s side door is unlocked using the ignition key, all the other doors are unlocked, too.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44D23
46 (*1) J13 45
D1946 (*1)
D2348 (*2) J14 45
D1948 (*2) F21 50 (*4)
P9A 47 (*1)
D2046 (*1) F22 51 (*5)
P9B 48 (*2)
D2048 (*2) J1 45 U1 45
D21 46 (*1) J4 A 45
D22 46 (*1) J5 B 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC154 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC354 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IK155 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IK355 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL2 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BA1 56 (*1) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)
BB1 56 (*1) Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)
BI2 61 (*5) Floor No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BA56 (*1)
Floor Seat Cross Member LHBA57 (*2)
Floor Seat Cross Member LH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
TOYOTA TACOMA (EM01D0U)
205
Memo
206
TOYOTA TACOMA (EM01D0U)
Wireless Door Lock Control
1K10
2
1
10AIG1 NO. 2
20ADR LCK
V
W–R
G–B V L–B
W–R
G–B
L–B
W–B
W–B
L–R
W–B
1H18
910
Key
Loc
k
Key
Unl
ock
8
7
M
1
4
IC310 IC38 4 IC3 IC39
A20 A23 A3
IA
L–R
IC35
GNDKSW LSWD UL3 ACTD
IC
V
5 4
41 6
19
G–B
W–B
W–B
W–B
ALTBIG
W–B
U 1
J 1
D19
B 5(A)
W–B
W–B
10AHORN
2
2
HORN
G–R
1C10
15
2 2
2 2
2 5
1 3
G–R GR
HO
RN
Rel
ay
W–G
W–G
1E11
W–B
W–B
Unl
ock
War
ning
SW
Body ECU
JunctionConnector
Door Lock Assembly(Driver' s Side)
(BAT)(IG)(BAT)
Det
ectio
n S
W
TOYOTA TACOMA (EM01D0U)
207
UL2 ACT–
W–B
ACT+
W–B
L–R
B–W V P L–
B
L–R
V P L–B
L–R
L–B
L–R
L–B
L–R
L–R
L–B
L–R
L–B
L–R
L–B
L–R
2
L2
1F
LSWP
V
56
Key
Loc
k
Key
Unl
ock
7
8
M
B 5(A)
1
1
IK15
1
IK34IK35IK36IC110 IK110
1I171H24
5
1I4 1I19 1H5
14
1H23
Body ECU
16 3
IK310
2
13
IE
( ∗1)
J132
4
A11
4
1F1 1H4 1H22
IL27 IL23
BB12BB13BA12BA13
M M
W–B
( ∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
D20
( ∗1)
( ∗1)
( ∗1)
( ∗1)
D22
D21
∗ 1 : Double Cab∗ 2 : Access Cab
L–R
L–R
B–W
V
B–W
1L8
25
HAZ
W10
HAZ
T11
W–B
J14
8 W–B
D11
G–Y
( ∗1)
DCTY
26
1
1F7
BF12
G–Y
( ∗2)
G–Y
( ∗2)
W–B W–B
JunctionConnector
JunctionConnector
Door Lock Assembly(Front Passenger' s Side)
Doo
r Lo
ck A
ssem
bly
( Rea
r R
H)
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
Doo
r Lo
ck A
ssem
bly
( Rea
r LH
)
Turn
Sig
nal
Flas
her
4
Det
ectio
n S
W
208
TOYOTA TACOMA (EM01D0U)
Wireless Door Lock Control
7. 5AECU–B
2
2
1C16
A6 6 A
ECUB
R
7
1I16
R
RDA PRG
5
+B
1
GND
RDA PRG
2 3
L Y
R
W–B
D 7
L
W–B
5 IL1
L
9 IL1
6 1F
7 BG1
1 1
2
1
1
2 1
2
1
1
2
R–B ( ∗1)
( ∗2)
R–B
20 22
PCTY ILERCTY
7
BE BF
1E9
W–B
7 BF1BG12
1I8 1J15
D13
D14
D15
D16
D17
D18
D12
R–B ( ∗2)
P–B ( ∗1)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗2)
W–B
( ∗2)
W–B
( ∗2)
W–B
( ∗2)
W–B
( ∗2)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗2)
P–B ( ∗1)
P–B ( ∗2)
P–B
( ∗1,
∗2)
R–B
W–B
Doo
r C
ontro
lR
ecei
ver
Doo
r C
ourte
sy S
W( F
ront
Pas
seng
er'
s S
ide)
Doo
r C
ourte
sy S
W( R
ear
RH
Upp
er S
ide)
Doo
r C
ourte
sy S
W( R
ear
RH
Low
er S
ide)
Doo
r C
ourte
sy S
W( R
ear
LH U
pper
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
LH L
ower
Sid
e)
Doo
r C
ourte
sy S
W( R
ear
RH
)
Doo
r C
ourte
sy S
W( R
ear
LH)
Body ECUB 5(A)
(BAT)
TOYOTA TACOMA (EM01D0U)
209
∗ 1 : Double Cab∗ 2 : Access Cab
L
WW
DO
OR
ON
OFF
L
R 7
3
1
W–B
2
W–B
1C4
1E2
2
2
7. 5ADOME
Roo
m L
amp
( Cen
ter)
(BAT)
210
TOYOTA TACOMA (EM01D0U)
Wireless Door Lock Control
Door lock control (Lock and unlock) and panic control (Theft alarm and flash) is performed by remote control, without theignition key inserted in the door key cylinder, using low–power electrical waves emitted by a transmitter.
1. Normal Operation∗ Lock operation
When the lock SW on the transmitter is pressed, all the doors are locked.∗ Unlock operation
When the unlock SW on the transmitter is pressed once, only the driver door is unlocked. When the unlock SW is pressedagain within 3 seconds, all the doors are unlocked.
2. Auto Lock FunctionWhen the door is not actually opened within 30 seconds after the door has been unlocked by the unlock SW on thetransmitter, all the doors are automatically locked. If any of the following conditions are detected, the wireless door lock doesnot function.∗ Any door is opened.∗ The ignition key is inserted into the ignition SW.∗ When the lock detection SW of all the doors are locked.
3. Wireless Door Lock Stop FunctionIf any of the following conditions are detected, the wireless door lock does not function.Lock operation∗ When any door is open (Door courtesy SW on)∗ The ignition key is inserted into the ignition SW (Unlock warning SW on)∗ Ignition SW is onUnlock operation∗ Ignition SW is on
4. Visual Confirmation of Lock or UnlockDuring lock operation, when the body ECU receives a lock signal from the door lock detection SW, the turn signal light isflashed once. During unlock operation, when the body ECU receives an unlock signal from the door lock detection SW, theturn signal light is flashed twice.
5. Remote Panic OperationPanic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once,interior lights light up, and theft alarm and horn sounds and turn signal light, headlights and taillight flash. Then, the panic orthe unlock button (Transmitter) is pushed once more, interior lights are turned off, sounding and flashing will stop. Panic willnot function when ignition key is in ignition key cylinder.
6. Repeat FunctionIf the lock detection signal in response to the output signal is not received after the body ECU has output the lock signal, thelock signal is output again.
7. Illuminated Entry FunctionWhen the body ECU detects the unlock state after the unlock operation has been made, it turns on the lights, such as theinterior light for approx. 15 sec. If all the doors are locked during this operation, lighting is cancelled and the lightsimmediately fade out.
: Parts Location
Code See Page Code See Page Code See Page
B5 A 44 D16 48 (*2) J1 45
D7 44 D17 48 (*2) J13 45
D1146 (*1) D18 46 (*1) J14 45
D1148 (*2)
D1946 (*1)
R747 (*1)
D1246 (*1)
D1948 (*2)
R748 (*2)
D1248 (*2)
D2046 (*1) T11 45
D13 48 (*2)D20
48 (*2) U1 45
D14 48 (*2) D21 46 (*1)
D15 46 (*1) D22 46 (*1)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
TOYOTA TACOMA (EM01D0U)
211
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E 28 Roof Wire and Driver Side J/B (Lower Finish Panel)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
1L 29 Relay Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC154 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC354 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IK155 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IK355 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL155 Instrument Panel Wire and Floor Wire (Right Kick Panel)
IL255 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BA1 56 (*1) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)
BB1 56 (*1) Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
BG1 57 (*2) Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
BE 57 (*2) Inside of the Access Door LH
BF 57 (*2) Inside of the Access Door RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
212
TOYOTA TACOMA (EM01D0U)
Multi Mode 4WD and Rear Differential Lock
1H13
9
P 1
D 6
V
L–W
Y
IH112
P
7. 5ASTA
2
( M/T
)
V
1
2
19 A62 A
( M/T
)
L–B
( M/T
)
2
( ∗1)
( A/T
)( A
/T)
2A6
2A5
15 A16
4WD
R
B
DD4
B
6 IJ1
7. 5AGAUGE
1J3
7. 5AECU–B
2
2
1C16
1K13
IJ17
Spe
edC
ontro
l
IA136
B18A12
10AIG1
1J9
IH19 IH18
PF7
PA4
IG+
SP1
1
SE
2
SI
3
BR
–W
W–B
R–Y
( M/T
)
W
W R–Y
R–Y
S 1(A), (B)
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
4LO
G R L P
Speed Sensor(Front LH, RH)
P
(∗3)(∗4)
V 1
R
( A/T
)
R
P
V
( M/T
)
( M/T
)( M
/T)
( M/T
)
A
( M/T
)
R–Y
B15A20
RL+
B16A6
RL–
B44A5
RR+
B45A19
RR–
Y BR B O
Speed Sensor(Rear)
DB4
PB8
PD6
3
21 A A1
V–W
R
BR
–W
G–W L–
BL–B
G–W
V–W
R
BR–W
( M/T
)
( A/T
)
(M/T)
(A/T)
C 9(A), C10(B)
14 B
L–Y
Rea
r D
iff.
Lock
L–Y
W–B
G–W ( ∗2)
Skid Control ECU with Actuator
Dio
de( C
lutc
h S
tart)
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)Combination Meter
N
2
Par
k/N
eutra
lP
ositi
on S
W
(ST)(IG)(BAT)(IG)
( A/T
)
TOYOTA TACOMA (EM01D0U)
213
20A4WD
1H17
MTN
A
2
V–W
PD
A
5
PD
11
IND3
BR
–W
( A/T
)
N
G–WL–
B
( M/T
)
A23 A22
SPD
19
IA
4
W–B
J 1
V–W
9
R
IND1
A
A5
IG
V
L–B
G–W
V–W
R
BR–W
(M/T)
(A/T)
∗ 2 : 2TR–FE A/T∗ 1 : 1GR–FE A/T
∗ 3 : w/ VSC
D10
A212 A 13
9 ID1 7
A
ID1
RLY2
6
1 BD1
M1 M2 RLY1 RLY2
3 2
W–B
5
A1
RLY1M2M1
M
Limit SW
LLG LG–BP
P
LG–B
LG LLG
–R
LG LG–B
LG–Y
BD12BD13 BD15
ID18ID110
GND
4
BD17
W–B
3
5 DA
13 DC
A16
R
10AIG1NO. 2
1C14
LGLG
4
R–B
RR
DIF
FLO
CK
1H18 1D7
A
RLP
6
W–B
T13
4 BD1
BD1
1
2
W–B
1D6
L–Y
L–Y
20
IB14
L–Y
DD7DB2
L–Y
DB13
L–Y
L–Y
W–B W–B 2
D 5
F12(A), F13(B)
∗ 4 : w/o VSC
4WD Control ECU
Diff. Lock ShiftActuator Assembly
Tran
sfer
Indi
cato
rS
W (
Rea
r D
iff. )
Diff
. Lo
ck S
W
JunctionConnector
(IG)(IG)
214
TOYOTA TACOMA (EM01D0U)
Multi Mode 4WD and Rear Differential Lock
15
R
Y–B
B3
DM1
B1
TM2TM1
2 B
1 EC1 3 EC12 EC1 5 EC1
PB17
13 PA
LG
W–B
( ∗5)
DL1
13 B
L
DM2
4 B B
GND
26
ADD
G
M
3 61 2
B
GR
2–4
8 A
L
LO
15 A
L4H4
H2
12
IC
21
PA22
PA
L4
Y–B
17 B
2
1
4WD
R–L
22 B
1
2
PA7 PA6
PA18 PA19
L–W
B–WL–
Y
L–B
LG–B
R
EHEE
12
TL1
M
B–W
25
4
TL3
B
5 3 6
4
TM1
H2
H4
L4
TM2 TL1 TL3 TL2
GND
23
TL2
B24
DM1 DM2 ADD DL1
LG–B
LG
W–B
LG–B
W–B
W–B
W–B
W–B
W–B
W–B
T 3
T 2
F15
( ∗5)
T 4
6
A 3
EC1
( ∗5)
( ∗5)
( ∗5)
( ∗5)
( ∗5)
( ∗5)
( ∗5)
( ∗5)
W–B
W–B
( ∗5)
( ∗5)
( 2TR
–FE
)
5 2
4
A6
GND
W–B
IE
2
13
4
W–B
PA8
J13
J14
F12(A), F13(B)
∗ 5 : w/ ADD
J 5
Tran
sfer
Indi
cato
r S
W( 4
WD
Pos
ition
)
4WD Control ECU
Tran
sfer
Indi
cato
r S
W( L
4 P
ositi
on)
Transfer Shift ActuatorAssembly ADD Actuator Assembly
4WD
Con
trol S
W
JunctionConnector
JunctionConnector
Junc
tion
Con
nect
or
Limit S
W(∗5)
W–B
4 EC1
P–L
DL2
12 B
5
DL2
P–L
( ∗5)
( ∗5)
W–B
( 1G
R–F
E)
TOYOTA TACOMA (EM01D0U)
215
Depending on the transfer shift actuator status and ADD actuator status, the 4WD control ECU drives the transfer shiftactuator and ADD actuator to electrically change the gear position selected by the driver according to vehicle speed signaland neutral start switch signal.
1. Shift Select ControlShifting from H2 into H4 positionWhen the 4WD control switch is turned from H2 into H4, this signal is input into 4WD control ECU (TERMINAL 2–4). Then,the 4WD control ECU moves the 2–4 select motor (TERMINAL 2, TERMINAL 1) in the transfer shift actuator assembly untilthe shift fork shaft shifts to the diff. free position, performing a shift into H4 position
Shifting from H4 into L4 positionWhen the 4WD control switch is turned from H4 into L4, this signal is input into 4WD control ECU (TERMINAL LO). Then, the4WD control ECU drives the 2–4 select motor (TERMINAL 2, TERMINAL 1) in the transfer shift actuator assembly, shiftingthe shift fork shaft, performing a shift into L4 position.
Switching diff. lock ON when in L4 position.When the diff. lock switch is turned ON with the 4WD control switch in L4 position, this signal is input into the 4WD controlECU (TERMINAL R). Then, the 4WD control ECU drives the diff. lock shift actuator (TERMINAL 2, TERMINAL 3) in the diff.lock shift actuator assembly until the shift fork shaft shifts to the diff. lock position, locking it in L4 position with the diff. lock.
2. Function of Limit SwitchRear diff. lock limit switch (TERMINAL 5 and TERMINAL 6 of diff. lock shift actuator assembly)The rear diff. lock limit switch in the diff. lock shift actuator assembly feeds back the current rear diff. lock status (Free or lock)information, which is based on the ON/OFF combination of the two switches, to the 4WD control ECU.
4WD limit switch (TERMINAL 3, TERMINAL 5 and TERMINAL 6 of transfer shift actuator assembly)The 4WD limit switch in the transfer shift actuator assembly feeds back the current shift position status (H2 or H4) and diff.lock or diff. free status information, which is based on the ON/OFF combination of the three switches, to the 4WD controlECU.
ADD limit switch (TERMINAL 6 and TERMINAL 5 of ADD actuator assembly)The ADD limit switch in the ADD actuator assembly feeds back the current front diff. lock or free status information, which isbased on the ON/OFF combination of the two switches, to the 4WD control ECU.
3. Shift Limit ControlThe 4WD control ECU interrupts the shift select control and give the driver a warning by means of buzzer (Integrated into theECU) sound and blinking indicator light on the combination meter when the following shift change conditions exist.The warning, however, can be canceled –– when the 4WD control switch is canceled and the switch position is returned towhere it was before the warning occurred.∗ Shift change from H2 into H4 with vehicle traveling at a speed reaching or exceeding 100 km/h (Buzzer sound and
blinking 4WD indicator lights)∗ Shift change from H4 into L4 with vehicle traveling at a speed reaching or exceeding 5 km/h but within the A/T shift
position N range (Buzzer sound and blinking 4LO indicator light) (A/T)∗ Shift change from H4 into L4 with vehicle traveling at a speed reaching or exceeding 3 km/h but within the clutch start SW
on position (Buzzer sound and blinking 4LO indicator light) (M/T)
4. ADD Actuator Control (1GR–FE)When switching between H2 (2WD) and H4 (4WD), the 4WD control ECU controls the way power is supplied to the ADDmotor in the ADD actuator assembly, as shown below, to run the ADD motor in normal or reverse direction, thereby changingthe status of the front diff. from free to lock, or vice versa.
For locking front diff. TERMINAL DM1 +BTERMINAL DM2 GROUND
For unlocking front diff. TERMINAL DM1 GROUNDTERMINAL DM2 +B
System Outline
216
TOYOTA TACOMA (EM01D0U)
Multi Mode 4WD and Rear Differential Lock
: Parts Location
Code See Page Code See Page Code See Page
A340 (1GR–FE) F15 44
T241 (1GR–FE)
A342 (2TR–FE) J1 45
T243 (2TR–FE)
C9 A 44 J5 45T3
41 (1GR–FE)
C10 B 44 J13 45T3
43 (2TR–FE)
D5 44 J14 45T4
41 (1GR–FE)
D6 44P1
41 (1GR–FE)T4
43 (2TR–FE)
D10
46 (*1)P1
43 (2TR–FE)
T13
47 (*1)
D10 48 (*2)
S1
A41 (1GR–FE) T13 48 (*2)D10
49 (*3)S1
A43 (2TR–FE)
T13
49 (*3)
F12 A 44S1
B41 (1GR–FE)
V141 (1GR–FE)
F13 B 44B
43 (2TR–FE)V1
43 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PD36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EC152 (1GR–FE)
Engine Wire and Differential Wire (Near the Front Differential)EC153 (2TR–FE)
Engine Wire and Differential Wire (Near the Front Differential)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
ID1 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
BD1
56 (*1)
Frame Wire and Differential Wire (Near the Rear Differential)BD1 57 (*2) Frame Wire and Differential Wire (Near the Rear Differential)BD1
58 (*3)
Frame Wire and Differential Wire (Near the Rear Differential)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
217
: Ground Points
Code See Page Ground Points Location
EE 52 (1GR–FE) Rear Side of Right Bank Cylinder Block
EH 53 (2TR–FE) Rear Side of Cylinder Block
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
IE 54 Right Kick Panel
218
TOYOTA TACOMA (EM01D0U)
Rear Differential Lock for 2WD
3
5 DA
13
6
D10
DC
9 ID1 7 ID1
3
W–B
T13
4 BD1
BD1
9
2
RLY2
4
6
1 BD1
M1 M2 RLY1 RLY2
IG
3 2
W–B
5
F14
GND
13
1
7
2
W–B
RLY1
7 DD
M2M1
J14
J13 W–B
M
Limit SW
IE
4
R
10AIG1NO. 2
1C14
V
20A4WD
LG
1H17
LG
4
R–B
5
SPD
PD2
PD5
V–W
1D6
1H18
L–Y
13
L–Y
DB
L–Y
L–Y
L–Y
L–Y
IB14
W–B LLG LG–BP
P
LG–B
LG L
W–B
LG–R
LG LG–B
LG–Y
BD12BD13 BD15
RLP
ID18ID110
62
D 5
1
RR
DIF
FLO
CK
GND
4
BD17
1D7
W–B
10
DB2
L–Y
V–W
V–W
Diff. Lock Shift ActuatorAssembly
Tran
sfer
Indi
cato
rS
W (
Rea
r D
iff. )
4WD Control ECU
Diff
. Lo
ck S
W
JunctionConnector
JunctionConnector
(IG)(IG)
TOYOTA TACOMA (EM01D0U)
219
Rea
r D
iff.
Lock
W–B 4
7. 5AGAUGE
1J3
A21
B14
19 A
V
C 9
( A) ,
C10
( B)
IA136
B18A12
10AIG1
1J9
IA
2
W–B
IH19 IH18
PF7
PA4
IG+
SP1
1
SE
2
SI
3
W–B
R–Y
( M/T
)
W
W R–Y
R–Y
A1
S 1(A), (B)
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
G R L P
Speed Sensor(Front LH, RH)
P
V 1
( A/T
)
P
( M/T
)
( M/T
)
( M/T
)( M
/T)
J 1
( M/T
)
R–Y
Spe
edC
ontro
l
A2 A6 A3
B15A20
RL+
B16A6
RL–
B44A5
RR+
B45A19
RR–
Y BR B O
Speed Sensor(Rear)
(w/ VSC)(w/o VSC)
7. 5AECU–B
2
1C16
1K13R
R
V–WV
2
L–Y
V–W
Skid Control ECU with Actuator
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Com
bina
tion
Met
er
JunctionConnector
(IG)(BAT)(IG)
( A/T
)
220
TOYOTA TACOMA (EM01D0U)
Rear Differential Lock for 2WD
This system frees or locks the rear differential according to the position of the diff. lock SW. The differential will lock onlywhen the transfer indicator SW (Rear diff.) is on and the vehicle speed is at 8 km/h (5 mph) or less.When the diff. lock SW is switched from OFF position to ON position, current flows to TERMINAL 4 of the 4WD control ECU.If the limit SW on the lock side inside the diff. lock shift actuator assembly is on at this time, until the limit SW is turned off,current flows from the 4WD fuse to TERMINAL 5 of the 4WD control ECU to TERMINAL 3 to TERMINAL 3 of the diff. lockshift actuator to TERMINAL 2 to TERMINAL 2 of the 4WD control ECU to TERMINAL 7 to GROUND. This drives the diff.lock shift actuator and locks the rear differential. When the rear differential locks, the transfer indicator SW (Rear diff.) turnson, lighting up the rear diff. lock indicator light in the combination meter.When the diff. lock SW is switched from ON position to OFF position, the current to TERMINAL 4 of the 4WD control ECU iscut off. If the limit SW on the free side inside the diff. lock shift actuator asesmbly is on, until the limit SW is turned off, currentflows from the 4WD fuse to TERMINAL 5 of the 4WD control ECU to TERMINAL 2 to TERMINAL 2 of the diff. lock shiftactuator assembly to TERMINAL 3 to TERMINAL 3 of the 4WD control ECU to TERMINAL 7 to GROUND. This drives thediff. lock shift actuator and frees the rear differential. When the rear differential is free, the transfer indicator SW (Rear diff.)and the rear diff. lock indicator light in the combination meter are turned off.The rear diff. lock indicator light flashes when:∗ The diff. lock SW is switched to ON position during differential lock prohibition conditions (Vehicle speed above 8 km/h (5
mph) ).∗ The transfer indicator SW (Rear diff.) is turned off during operation of the diff. lock shift actuator.
: Parts Location
Code See Page Code See Page Code See Page
C9 A 44 J1 45
T13
47 (*1)
C10 B 44 J13 45 T13 48 (*2)
D5 44 J14 45
T13
49 (*3)
D10
46 (*1)
S1
A41 (1GR–FE)
V141 (1GR–FE)
D10 48 (*2)S1
A43 (2TR–FE)
V143 (2TR–FE)D10
49 (*3)S1
B41 (1GR–FE)
F14 44B
43 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PD36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
TOYOTA TACOMA (EM01D0U)
221
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
ID1 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
BD1
56 (*1)
Frame Wire and Differential Wire (Near the Rear Differential)BD1 57 (*2) Frame Wire and Differential Wire (Near the Rear Differential)BD1
58 (*3)
Frame Wire and Differential Wire (Near the Rear Differential)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
IE 54 Right Kick Panel
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
222
TOYOTA TACOMA (EM01D0U)
Wiper and Washer with INT Time SW
W 1
L
M
1 4 3
2 5
M
+S+2+1
EB
P
10AWSH
30AWIP
W–B
1
EB IC IA
1B8 1H15 1B3
W–B
PLL
2
1
IA49
W–B
W–B
L–Y
L–Y
L–W
L–R
L–BL
L–B
L–R
L–W
IA410 IA43 IA44
Wip
er R
elay
Wiper SW
Washer SW
on
off
INT2B1INT1+S+2+1+B
OFF
LO
HI
INT
C12(A), C13(B)
MIST
EW WF
A2 A3 A4 A1 B3B2
J 1
W 2
Win
dshi
eld
Wip
er M
otor
Win
dshi
eld
Was
her
Mot
or
Combination SW
JunctionConnector
+B +1 +2 +S EW WF
(IG)(IG)
M
TOYOTA TACOMA (EM01D0U)
223
With the ignition SW turned on, the current flows to TERMINAL (A) 2 of the combination SW and TERMINAL 2 of thewindshield wiper motor through the WIP fuse. The current flows to TERMINAL 1 of the windshield washer motor through theWSH fuse.
1. Low Speed PositionWith the wiper and washer SW turned to LO position, the current flows from TERMINAL (A) 2 of the combination SW toTERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshieldwiper motor to run at low speed.
2. High Speed PositionWith the wiper and washer SW turned to HI position, the current flows from TERMINAL (A) 2 of the combination SW toTERMINAL (A) 4 to TERMINAL 4 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshieldwiper motor to run at high speed.
3. INT PositionWith the wiper and washer SW turned to INT position, the wiper relay operates and current flows from TERMINAL (A) 2 ofthe combination SW to TERMINAL (B) 2 to GROUND. This activates the intermittent circuit and the current flows fromTERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5to GROUND and the wiper operates. Intermittent operation is controlled by a condenser charge and discharge function in therelay.
4. Washer Continuous OperationWith the wiper and washer SW pulled to on position (Washer SW ON position), the current flows from the WSH fuse toTERMINAL 1 of the windshield washer motor to TERMINAL 2 to TERMINAL (B) 3 of the combination SW to TERMINAL (B)2 to GROUND and causes the windshield washer motor to run and the window washer to spray. Simultaneously, currentflows from the WIP fuse to TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshieldwiper motor to TERMINAL 5 to GROUND, causing the wiper to function.
: Parts Location
Code See Page Code See Page Code See Page
C12 A 44W1
41 (1GR–FE) W2 43 (2TR–FE)
C13 B 44W1
43 (2TR–FE)
J1 45 W2 41 (1GR–FE)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
: Ground Points
Code See Page Ground Points Location
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
System Outline
224
TOYOTA TACOMA (EM01D0U)
Wiper and Washer without INT Time SW
W 1
L
1 4 3
2 5
M
+S+2+1
EB
P
10AWSH
30AWIP
W–B
1
EB IC IA
1B8 1H15 1B3
W–B
PLL
2
1
IA49
W–B
W–B
L–Y
L–Y
L–W
L–R
L–BL
L–B
L–R
L–W
IA410 IA43 IA44
Wiper SW
W 2
Washer SW
on
off
+S+2+1+B
OFF
LO
HI
C12(A), C13(B)
MIST
EW WF
A2 A3 A4 A1 B3B2
J 1
Win
dshi
eld
Wip
er M
otor
Win
dshi
eld
Was
her
Mot
or
Combination SW
JunctionConnector
M
(IG)(IG)
M
+B +1 +2 +S EW WF
TOYOTA TACOMA (EM01D0U)
225
With the ignition SW turned on, the current flows to TERMINAL (A) 2 of the combination SW and TERMINAL 2 of thewindshield wiper motor through the WIP fuse. The current flows to TERMINAL 1 of the windshield washer motor through theWSH fuse.
1. Low Speed PositionWith the wiper and washer SW turned to LO position, the current flows from TERMINAL (A) 2 of the combination SW toTERMINAL (A) 3 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshieldwiper motor to run at low speed.
2. High Speed PositionWith the wiper and washer SW turned to HI position, the current flows from TERMINAL (A) 2 of the combination SW toTERMINAL (A) 4 to TERMINAL 4 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshieldwiper motor to run at high speed.
3. MIST PositionWith the wiper SW turned to MIST position, current flows from TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper motor to run atlow speed.
4. Washer Continuous OperationWith the wiper and washer SW pulled to washer position (Washer SW ON position), the current flows from the WSH fuse toTERMINAL 1 of the windshield washer motor to TERMINAL 2 to TERMINAL (B) 3 of the combination SW to TERMINAL (B)2 to GROUND and causes the windshield washer motor to run and the window washer to spray. Simultaneously, currentflows from the WIP fuse to TERMINAL (A) 2 of the combination SW to TERMINAL (A) 3 to TERMINAL 1 of the windshieldwiper motor to TERMINAL 5 to GROUND, causing the wiper to function.
: Parts Location
Code See Page Code See Page Code See Page
C12 A 44W1
41 (1GR–FE) W2 43 (2TR–FE)
C13 B 44W1
43 (2TR–FE)
J1 45 W2 41 (1GR–FE)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
: Ground Points
Code See Page Ground Points Location
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
System Outline
226
TOYOTA TACOMA (EM01D0U)
Shift Lock
P
ACC
A
6
GR
Shift LockSolenoid
SLS–E SLS+
IG
8
1
P
1
12
KLS+
IC
22 A21
B15
W–B
W–B
L–W
W–B
2
K 3
S 7
10AIG1
1J9
7. 5AACC
1J10
PF7
PE10
LG
1B2
1C6
2
2 2
15
4
S10 23 S
TOP
LP
CTR
LR
elay
1
2
2 2
2
2
10ASTOP
LL
G–BL L
DD5
DB14
G–W
STP
DC13
DC12
LG
L
G–W
10AIG1NO. 2
7
( ∗1)
1C14J
4(A)
, J 5
( B)
Sto
p La
mp
SW
Key
Inte
rlock
Sol
enoi
d
Shift Lock Control ECU
Junc
tion
Con
nect
or L
( ∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗1)
( ∗2)
∗ 2 : w/o VSC∗ 1 : w/ VSC
(IG)(BAT)(ACC)(IG)
TOYOTA TACOMA (EM01D0U)
227
When the ignition SW is turned to ACC position the current from the ACC fuse flows to TERMINAL 6 of the shift lock controlECU. When the ignition SW is turned to ON position, the current from the IG1 fuse flows to TERMINAL 1 of the shift lockcontrol ECU.
1. Shift Lock MechanismIf the brake pedal is depressed with the ignition SW set at ON (The stop lamp SW is on), the shift lock control ECU isactivated, allowing the driver to change the shift lever to a position other than the P position.
2. Key Interlock MechanismWith the ignition SW at ON or ACC position, when the shift lever is put in P position, the current flowing from TERMINAL 12of the shift lock control ECU to key interlock solenoid is cut off. This causes the key interlock solenoid to turn off (Lock leverdisengages from LOCK position) and the ignition key can be turned from ACC to LOCK position.
: Parts Location
Code See Page Code See Page Code See Page
J4 A 45 K3 45 S10 45
J5 B 45 S7 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
DB 34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PE36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Ground Points
Code See Page Ground Points Location
IC 54 Instrument Panel Brace RH
System Outline
228
TOYOTA TACOMA (EM01D0U)
Remote Control Mirror
3 IC3
RHRHLH LH
Left
Rig
ht
Up
Dow
n
Left/
Up
Rig
ht/
Dow
n
BR
–W
GR
O 1
MH
M+
MH
M+
MV
MM
MV
MM
Sel
ect S
W
B
MRVMRH EM+MLVMLH
Ope
ratio
nS
W
7
MV
4
MH
2 6
8
5 3
6
BR–W
1O 2
32
1O 3
32
W–B
IA
J 1
BR
–W
W–B
LG–B
P–B
LG–R
P–G
P–G P–B
LG–R
LG–B
BR
–W
BR
–WB
R–W
BR
–W
LG–B
LG–R
P–B
P–G
PF12
PF11PF5
IK33IK32IK31IC32IC31
7. 5AACC
1J16
Outer Mirror SW
JunctionConnector
Outer Rear ViewMirror (RH)
Outer Rear ViewMirror (LH)
(ACC)
TOYOTA TACOMA (EM01D0U)
229
: Parts Location
Code See Page Code See Page Code See Page
J1 45O2
46 (*1)O3
46 (*1)
O1 45O2
48 (*2)O3
48 (*2)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
PF 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC3 54 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IK3 55 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
230
TOYOTA TACOMA (EM01D0U)
Automatic Glare–Resistant EC Mirror
10AIG1 NO. 2
1E8
1E13
1D81H18
BDIA
J 14
6
7
LGW
–BW
–B
W–B
I 8
E
IG
JunctionConnector
Inner RearView Mirror
(IG)
TOYOTA TACOMA (EM01D0U)
231
: Parts Location
Code See Page Code See Page Code See Page
I8 46 (*1) I8 48 (*2) J1 45
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1E 28 Roof Wire and Driver Side J/B (Lower Finish Panel)
1H 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
BD56 (*1)
Near the Rear DifferentialBD57 (*2)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
232
TOYOTA TACOMA (EM01D0U)
Seat Belt Warning
3
B–O
W–B
( ∗2)
B–O
( ∗1)
7. 5AGAUGE
1J3
( ∗2)
(∗1)
10AIG1
1J9
W–B
13 C
8
PF13
P
2
Driver' sSeat Belt
10
IA
J 12
13 A
1H18
21
C12
10
BA
PF
1
2
1
2
BI22
BI21
1J1
1F9
Fron
tP
asse
nger
Sea
t Bel
tW
arni
ngLi
ght
IL12
1 IL1
B–O
B–O
W–B
W–B
4
W–B
W–B
W–B
PBEW
7( ∗
2)
IG+
GR
–BP
PBEW
GR
( ∗1)
V
F22
1F
F21
O 5
∗ 2 : Bench Seat∗ 1 : Separate Seat
FSP+ FSP–
2 1
F25
( ∗1)
( ∗1)B
P–G
G–R ( ∗1)
G–B
( ∗1)
FSR+ FSR–
BSW BGND
8 4
9 5
W–B
C 9
H 7
BH15 BH16
G–R ( ∗1)
G–B
( ∗1)
A21(
A), A
23( C
)
( ∗2)
W–B
Buz
zer
Blin
k
Airb
ag S
enso
rA
ssem
bly
Cen
ter
Haz
ard
War
ning
Sig
nal S
W A
ssem
bly
Com
bina
tion
Met
er
JunctionConnector
Fron
t Sea
t Inn
er B
elt
( Driv
er'
s S
ide)
Fron
t Sea
t Inn
er B
elt
( Driv
er'
s S
ide)
Front Seat Inner Belt(Front Passenger' s Side)
Occ
upan
tC
lass
ifica
tion
EC
U
(IG)(IG)
GR
O10
2 1
F24
( ∗2)
( ∗2)B
P–G
G–R ( ∗2)
G–B
( ∗2)
FSR+ FSR–
BSW BGND
11 12
13 14
BJ24 BJ25
G–R ( ∗2)
G–B
( ∗2)
Front Seat Inner Belt(Front Passenger' s Side)
Occ
upan
tC
lass
ifica
tion
EC
U
G–B(∗2)
G–R(∗2)
TOYOTA TACOMA (EM01D0U)
233
When the driver has not fastened the seat belt while the ignition SW is ON, the driver seat belt warning light blinks, and awarning buzzer comes on.Also, in the front passenger seat, a sensor recognizes passenger, and when the passenger has not fastened the seat belt,the front passenger seat belt warning light blinks.
: Parts Location
Code See Page Code See Page Code See Page
A21 A 44 F22 51 (*5) J1 45
A23 C 44 F24 51 (*5) O5 50 (*4)
C9 44 F25 50 (*4) O10 51 (*5)
F21 50 (*4) H7 45
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1F 28 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)
1H29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
PF 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BH1 60 (*4) Floor Wire and Seat No.1 Wire (Under the Front Passenger’s Seat)
BI2 61 (*5) Floor No.2 Wire and Seat No.1 Wire (Under the Front Seat LH)
BJ2 61 (*5) Floor Wire and Seat No.1 Wire (Under the Front Seat RH)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
BA
56 (*1)
Floor Seat Cross Member LHBA 57 (*2) Floor Seat Cross Member LHBA
58 (*3)
Floor Seat Cross Member LH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
234
TOYOTA TACOMA (EM01D0U)
Accessory Meter
10AIG1NO. 2
1E8 5 1E
14 1K PE13
PD2
7. 5AECU–B
5
2
2
7. 5AGAUGE
1J3
V
3
V–W R
6
R
LG
IG+
1C16
1K13
ILL+
V–W
W–B
S1
W–B
1E10
1C1
Y
W–BGR
1E3
1C3
GRY
W–B
V–W
1E13
1D8
E
BD
TEMP+ TEMP–
W–B 4
14
1H18
3
2 6
IA
J 12
2
21
IA136
B18A12
SP1
R–Y
( M/T
)
W
R–Y
S 1(A), (B)
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
G R L P
Speed Sensor(Front LH, RH)
( A/T
)
( M/T
)
R–Y
19 1
Spe
edC
ontro
l
A13
Skid Control ECU with Actuator
Am
bien
t Tem
p.
Sen
sor
JunctionConnector
1
2
(IG)(BAT)(IG)
50AJ/B
2
2
1A6
2 5
1 3
1E6
L
(BAT)
TAIL
Rel
ay
10ATAIL
(w/ VSC)(w/o VSC)
G
Com
bina
tion
Met
erC
9
Acc
esso
ry M
eter
A28
W(M/T)
R–Y(M/T)
( A/T
)
TOYOTA TACOMA (EM01D0U)
235
10AIG1
1J9
IH19 IH18
PF7
PA4
IG+
1
SE
2
SI
3
W R–Y
P
V 1
P
( M/T
)
( M/T
)
( M/T
)( M
/T)
B15A20
RL+
B16A6
RL–
B44A5
RR+
B45A19
RR–
Y BR B O
Speed Sensor(Rear)
(w/ VSC)(w/o VSC)
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
(IG)
S 1(A), (B)Skid Control ECU with Actuator
W(M/T)
R–Y(M/T)
236
TOYOTA TACOMA (EM01D0U)
Accessory Meter
: Parts Location
Code See Page Code See Page Code See Page
A1340 (1GR–FE) C9 44
S1 B41 (1GR–FE)
A1342 (2TR–FE) J1 45
S1 B43 (2TR–FE)
A2846 (*1)
S1 A41 (1GR–FE)
V141 (1GR–FE)
A2848 (*2)
S1 A43 (2TR–FE)
V143 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1E 28 Roof Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
PA 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
BD56 (*1)
Near the Rear DifferentialBD57 (*2)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
237
Memo
238
TOYOTA TACOMA (EM01D0U)
Horn
10AHORN
2
∗ 1 : Double Horn Type
2 5
1 3
22
Hor
n S
W
2
(∗1)
HORNRelay
2
1C10
1I22
8 1 1H 5H 6
HO
W–G
G–R GR
G–R
W–G
GR
Horn(High)
Horn(Low)
Spi
ral C
able
S 8
2
(BAT)
TOYOTA TACOMA (EM01D0U)
239
: Parts Location
Code See Page Code See Page Code See Page
H541 (1GR–FE)
H641 (1GR–FE) S8 45
H543 (2TR–FE)
H643 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1I 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
240
TOYOTA TACOMA (EM01D0U)
Power Outlet for 115V
10AIG1NO. 2
1C14
31
DA11 DB5
A
100AAC SKT
2D1
2
DC13 DD10
2 3
1 5
3 3
R
3
G–B
3
IA42
6 AA8
A7 A3 A1 A5 A11 B1
IM12 IM17 IM13
REDR 400W P/T AC1 AC2 PGND
B2
+B
BC11
ED11
BC22 BC21
BC23
BC
PF1
PE15
IA140
2
1
2B3
2A6
PF9
PB18
7. 5ASTA
2
V
2
VVL–
BL–
BL–
BLG
LG
LGLG
LG LG–B
LG BB
( M/T
)
( M/T
)( M
/T)
( M/T
)( M
/T)
( A/T
)( A
/T)
( A/T
)
3 26
5
4 1
IND IND–
IND+
GND
CCCL
ACC1 ACC2
IM110
L–B
( M/T
)
C14
M 2
NSW
IM19
V
( A/T
)
2
V–W
SPD
IM16
V–W
ELS2
E 7(
A), (
B)
LG
L L L
LL
L R
G–B
R–W
R–W
LGLG
W–B
W–B
W–B W–B
L
R
G–B
L
L
L
P 8
V 8(A), V 9(B)
9
IM1
V–W
A
B–W
5
AC
SK
T R
elay
B–W
OUTB
E
DC14
Cru
ise
Con
trol
Clu
tch
SW
Eng
ine
Con
trol
Mod
ule
Mai
n S
W( P
ower
Out
let A
C11
5V)
Voltage Inverter
Pow
er P
oint
Soc
ket
(ST)(BAT)(IG)
(1GR–FE)A12(2TR–FE)B20
TOYOTA TACOMA (EM01D0U)
241
V–WV–W
7. 5AGAUGE
1J3
7. 5AECU–B
2
2
1C16
1K13S
peed
Con
trol
IA136
B18A12
10AIG1
1J9
IA
2
W–B
IH19 IH18
PF7
PA4
IG+
SP1
1
SE
2
SI
3
21 1
6 32
W–B
R–Y
( M/T
)
W
W R–Y
R–Y
B15A20
B16A6
B44A5
B45A19
RR–RL+ RR+RL–
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
G R L P
Y BR B O
Speed Sensor(Rear)
Speed Sensor(Front LH, RH)
S 1(
A), (
B)
P
(w/ VSC)
(w/ VSC)
(w/o VSC)
(w/o VSC)
V 1
R
( A/T
)
R P
V
( M/T
)
( M/T
)
( M/T
)( M
/T)
J 1
PE5
PD2
19
V–W
( M/T
)
R–Y
C 9
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Com
bina
tion
Met
er
JunctionConnector
(IG)(BAT)(IG)
( A/T
)
242
TOYOTA TACOMA (EM01D0U)
Power Outlet for 115V
: Parts Location
Code See Page Code See Page Code See Page
C9 44P8
47 (*1)V8 A
47 (*1)
C14 44P8
48 (*2)V8 A
48 (*2)
E7A 44
S1A 41 (1GR–FE)
V9 B47 (*1)
E7B 44
S1B 43 (2TR–FE)
V9 B48 (*2)
J1 45V1
41 (1GR–FE)
M2 45V1
43 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
3 23 Engine Room R/B No.2 (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
2B 24 Engine Wire and Engine Room J/B (Engine Compartment Left)
2D 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PB36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE 36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ED152 (1GR–FE)
Frame No.2 Wire and Engine Room Main Wire (Front Fender Apron RH)ED153 (2TR–FE)
Frame No.2 Wire and Engine Room Main Wire (Front Fender Apron RH)
IA154 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IA454 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IM1 55 Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)
BC156 (*1)
Frame No.2 Wire and Floor No.3 Wire (Floor Seat Cross Member RH)
BC157 (*2)
Frame No.2 Wire and Floor No.3 Wire (Floor Seat Cross Member RH)
BC256 (*1)
Frame No.2 Wire and Floor No.3 Wire (Floor Seat Cross Member RH)
BC257 (*2)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
BC56 (*1)
Near the Voltage InverterBC57 (*2)
Near the Voltage Inverter
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
243
Memo
244
TOYOTA TACOMA (EM01D0U)
Cigarette Lighter and Power Outlet for 12V
7. 5AACC
2
13
5
1H181K111K4
1
2
1
2
4
IA
1
LG LG W–B
W–B
W–B
W–B
W–B
ACC SKTRelay
P 7
C 6
J 1
E E
B B
15APWROUTLET
Cig
aret
te L
ight
er
Pow
er P
oint
Soc
ket
JunctionConnector
(ACC)(BAT)
TOYOTA TACOMA (EM01D0U)
245
: Parts Location
Code See Page Code See Page Code See Page
C6 44 J1 45 P7 45
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1H29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IA 54 Left Kick Panel
246
TOYOTA TACOMA (EM01D0U)
Trailer Towing for Trailer Socket 7P Type
1 3
2 5 5
13
2 2 2
TOW
ING
TA
ILR
elay
2
22
TAIL
Rel
ay
22
BA
TT C
HG
Rel
ay
30ATOWINGTAIL
2
2
IB118IB19
BE15 BE14
3 BE1
BD
BE11 BE12 BE17
2A27
32 2A2A33
EBEA
2 5
1 3
1A6
1C7
2
30ABATT CHG
2
2
50AJ/B
2
2
1J19
181H
81D
8 BE1
4356 7
12
BRKB/UPSTTLSTTRGND
LG
W–B
LG
W–B
L–R
L–O
R–W
Y
W–B
G
B GG
–BGR
G–BGR
W–B
W–B
W–B
W–B
W–B
W–B
W–B
R–W
B–Y
L–O
L–R
L
W–B
L
L
YR
L
BRW
L
BATT TAIL10
A T
AIL
V
T12G
TAIL
W–B
W–B
G
A13
IJ18
IC
A6
B5
12
18
19
Ligh
tC
ontro
l SW
ELHT
OFF
Tail
Head
TRLY
C11
J 4(
A), J
5( B
)
B 5(
A)
Com
bina
tion
SW
Bod
y E
CU
Junc
tion
Con
nect
or
Trailer Socket
(BAT)(BAT)(BAT)
TOYOTA TACOMA (EM01D0U)
247
12 IH1
13 1H
10AIG1
2
1
IH16
1 ID2
1 1L
4
13
IA41
30ATOWINGBRK
2
2
IA
J 13
P
IG
1
ID28
6 4 2
1 9 3 8
RTOTLTOTGND
+B LTIN RTIN STIN
30ATOWING
2
2
9 1C
3 1L 1L2
1C18
1L4
1B4
15ATRN–HAZ
2
2
DD5
DD13
635
LL LR B
T 8
L–B
L–Y
T11
B–Y
L–B
L–Y
GR
B–Y
L
IB110 11 IB1
1 3
425
4
BRK GND
Y
R–W
L–O
L–R
W–B
LG
W–B
LG
P 1
L
B 1
G
T 7
Y
GR
Y
W–B
L–O
W–B
L–R
L–O
L–R
R–W
R–W
B L
TAIL
R–W
G
+B
B
STOP
L
L
PP B–Y
J 2
Tow
ing
Con
verte
r R
elay
Bac
k–U
p La
mp
SW
Par
k/N
eutra
l Pos
ition
SW
Tow
ing
Bra
keC
ontro
ller
Junc
tion
Con
nect
or
JunctionConnector
Turn Signal Flasher
(BAT)(BAT)(IG)(BAT)
248
TOYOTA TACOMA (EM01D0U)
Trailer Towing for Trailer Socket 7P Type
( ∗1)
LG
L
( ∗1)
( ∗2)L L
5 DC
2 1B
6 1C
G–W
G–W
LGLG
LSTP2
L
G–B L L
L
S 1(
A)
STO
P L
P C
TRL
Rel
ay
S10
STPO
12 DC
13 DC
4
51
32
2( ∗
1)2
( ∗1)
( ∗1)
2 2
( ∗1)
( ∗1)
2
2
1( ∗
2)
10ASTOP
2
2
14 1C
10AIG1NO. 2
( ∗1)
L
10 1I
∗ 2 : w/o VSC∗ 1 : w/ VSC
LG
Sto
p La
mp
SW
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
(BAT)(IG)
A45
A16
TOYOTA TACOMA (EM01D0U)
249
: Parts Location
Code See Page Code See Page Code See Page
B140 (1GR–FE) J4 A 45 S10 45
B142 (2TR–FE) J5 B 45 T7 45
B5 A 44P1
41 (1GR–FE) T8 45
C11 44P1
43 (2TR–FE) T11 45
J1 45S1 A
41 (1GR–FE)T12
47 (*1)
J2 45S1 A
43 (2TR–FE)T12
48 (*2)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A
28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)1B 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C
28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1D 28 Frame Wire and Driver Side J/B (Lower Finish Panel)
1H
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)1I 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1J
29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1L 29 Relay Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IB1 54 Frame Wire and Engine Room Main Wire (Left Kick Panel)
ID2 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
BE156 (*1)
Frame No.3 Wire and Frame Wire (Behind the Trailer Socket)BE157 (*2)
Frame No.3 Wire and Frame Wire (Behind the Trailer Socket)
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
BD56 (*1)
Near the Rear DifferentialBD57 (*2)
Near the Rear Differential
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
250
TOYOTA TACOMA (EM01D0U)
Clock
7. 5AACC
Clock
1J20
W–B
W–B
7. 5ADOME
GR
2
2
G
W–B
W–B
3 1K
4 1C
WW
BB
E ILL+
IE
J131
14 13
7 11
IL111
BACC
H 7
A12
B20
G
J 4(
A), J
5( B
)
Hazard WarningSignal SW Assembly
JunctionConnector
Junc
tion
Con
nect
or
(BAT)(ACC)
50AJ/B
2
2
1A6
5 2
3 1
1J7
L
(BAT)
TAIL
Rel
ay
10ATAIL
G
TOYOTA TACOMA (EM01D0U)
251
: Parts Location
Code See Page Code See Page Code See Page
H7 45 J5 B 45
J4 A 45 J13 45
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IL1 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IE 54 Right Kick Panel
BB
56 (*1)
Floor Seat Cross Member RHBB 57 (*2) Floor Seat Cross Member RHBB
58 (*3)
Floor Seat Cross Member RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
252
TOYOTA TACOMA (EM01D0U)
Tire Pressure Warning System
10AIG1NO. 2
1C14
DA4
DC13
IE112 IE113 IE114
R–W
L–W
GR
R–W
L–W
GR
LGLG
23 IA1
GG
2
1
EB
5
7
IC
DA2 DA10
DA9 DB18
8 7 16 10 11
13 7
P–B W
P–B W
W–B
W–B
W–B
12 3
IJ14
SPDSILTCIG
5
+5V
1
RDA
4
GND
INDGNDCLSWGND2RDARF5V
TC SIL
6
V–W
L
LV
–W
(IG)
Tire
Pre
ssur
e W
arni
ngS
W (
Res
et)
T15
Data Link Connector 3D 4
Tire Pressure Monitor ECUT14
JunctionConnector
J 5
Tire Pressure MonitorReceiver
T16
2 4
SE
T
TOYOTA TACOMA (EM01D0U)
253
(IG)(BAT)
PF10
PD2
7. 5AECU–B
2
2
(IG)
7. 5AGAUGE
1J3
V
3
V–W R
6
R
1C16
1K13
W–B
IA
J 12
2
21
IA136
B18A12
10AIG1
1J9
IH19 IH18
PF7
PA4
IG+
SP1
1
SE
2
SI
3
R–Y
( M/T
)
W
W R–Y
R–Y
S 1(A), (B)
B10A18
FL+
B9A4
FL–
B40A3
FR+
B39A17
FR–
G R L P
Speed Sensor(Front LH, RH)
P
V 1
( A/T
)
P
( M/T
)
( M/T
)
( M/T
)( M
/T)
( M/T
)
R–Y
19 1
B15A20
RL+
B16A6
RL–
B44A5
RR+
B45A19
RR–
Y BR B O
Speed Sensor(Rear)
(w/ VSC)(w/o VSC)
Spe
edC
ontro
l
Skid Control ECU with Actuator
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
JunctionConnector
23
L
V–W
L
Com
bina
tion
Met
erC
9
Tire
Pre
ssur
e
Rev
erse
( A/T
)
254
TOYOTA TACOMA (EM01D0U)
Tire Pressure Warning System
The air pressure sensor installed in the tire wheel detects the tire air pressure and transmits signals to the vehicle sidereceiver. When the detected tire air pressure is below a specified level, the warning light in the combination meter comes onto inform the driver.Press the tire pressure warning SW (Reset) for 3 seconds with the ignition SW at ON position after the tire pressure isadjusted to the specified value. It will lead the tire pressure monitor ECU to control and warn the pressure according to thespecified value.Warnings when the tire pressure is low∗ When the tire air pressure is below a specified level, the warning light in the combination meter comes on.
: Parts Location
Code See Page Code See Page Code See Page
C9 44
S1
A 43 (2TR–FE)
T16
47 (*1)
D4 44 S1B
41 (1GR–FE) T16 48 (*2)
J1 45
S1B
43 (2TR–FE)
T16
49 (*3)
J5 45 T14 45V1
41 (1GR–FE)
S1 A 41 (1GR–FE) T15 45V1
43 (2TR–FE)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
DA34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DB34 Instrument Panel Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DC 34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PA 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PD36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IC 54 Instrument Panel Brace RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
System Outline
TOYOTA TACOMA (EM01D0U)
255
Memo
256
TOYOTA TACOMA (EM01D0U)
Audio System for Separate Type Amplifier
16
10 B1 B
IL3IL32
7 IL3
30ARADIONO. 2
2
2
12 IL3
7. 5AACC
1J6
15 A
10ARADIONO. 1
2
2
5 AA1
IA137
7 AA11
A1
7 A
B11
A2
8 AA12
IL313
1 A
IA46
B6 B17
IL318 IL317
IC112 IC111
1 2
B7 B18
IL39 IL38
IK11 IK16
1 2
B4 B13
IL311 IL310
BA15 BA110
1 2
B5 B14 15 B
BB
BB15 BB110
1 2
IE111 IE11
J 4(
A), J
5( B
)
LLG
1
VP
Y
2
BL
1
LGV
S20
P
2
3434
S15
GNDRR–RR+RL–
R–W
RL+FR–
O
FR+FL–
V
FL+
–
V
+–
O
+
S16
R–W
TX–TX+
GR
MUTEACC
GR
B
S17
L–Y
GR
L–Y
TX–TX+
GR
MUTEACC
W–L
+B2+B
W–L
–+
W–L
–
S18
+
W–L
W–L
B Y
S19
P V LG L
P V LG L R W R
S23(A), S24(B)
W
R 1(A), R 3(D)
B Y
R W BR
GR
Radio Receiver Assembly
Junc
tion
Con
nect
or
Speaker(Front Door RH)
Spe
aker
( Tw
eete
r R
H)
Speaker(Front Door LH)
Spe
aker
( Tw
eete
r LH
)
Speaker(Rear Door RH)
Speaker(Rear Door LH)
Stereo Component Amplifier
(BAT)(ACC)(BAT)
TOYOTA TACOMA (EM01D0U)
257
A9 A19 A8 A18 A10
IL35 IL314 IL36 IL315 IL34
A3 A2 A5 A4 A6
2 B B11 B3 B12 B16
IL31
ID
20 A
MODE
S 8
AU1 AU2EAU
Seek+
Seek–
Volume+
Volume–
6 54
Ste
erin
g P
ad S
W
D7 D6 D8
3
Y–B
14
W–R
2
V–WBR
E
W
WFR–WFR+
B
WFL–WFL+
GR
S23(
A), S
24( B
)
SW2SWG
R 1(A), R 3(D)
SW1
R
GNDSGNDG
R–R+
B
L–L+
W
( Shi
elde
d)( S
hiel
ded)
SGNDR–R+L–L+
S21
LH
WF+ WF– WF+ WF–
BR
G–W L–
B
L–R
BR
BR
BR
Spi
ral C
able
Radio Receiver Assembly
Ste
reo
Com
pone
ntA
mpl
ifier
Speaker(Woofer)
258
TOYOTA TACOMA (EM01D0U)
Audio System for Separate Type Amplifier
: Parts Location
Code See Page Code See Page Code See Page
J4 A 45 S15 47 (*1) S20 47 (*1)
J5 B 45 S16 47 (*1) S21 47 (*1)
R1 A 45 S17 47 (*1) S23 A 47 (*1)
R3 D 45 S18 47 (*1) S24 B 47 (*1)
S8 45 S19 47 (*1)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA154 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IA454 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IC1 54 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IK1 55 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL3 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BA1 56 (*1) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)
BB1 56 (*1) Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)
: Ground Points
Code See Page Ground Points Location
ID 54 Instrument Panel Brace RH
BB 56 (*1) Floor Seat Cross Member RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
259
Memo
260
TOYOTA TACOMA (EM01D0U)
Audio System for Built–in Type Amplifier
7. 5AACC
1J6L(
∗2)
10ARADIONO. 1
2
2
IA137
B3 B
ACC
L–Y
AU2
Y–B
W–R
V–W
AU1
( ∗5)
( ∗5)
( ∗5)
B2 B6
L(∗2
)
1 IC211 IC1
1 IK26 IK1
1 2
B1 B5
IL28
4
2 IK21 IK1
1 2
C2 C6
5 BF110 BA1
1 2
C1 C3
4 BF15 BA1
6
1 2
IE111 IE11
B7
IC2IC112
2
ID
Y( ∗
4)
R( ∗
3)
Seek+
B
∗ 2 : w/o Door Lock Control
MODE
Seek–
Volume+
Volume–
Ste
erin
g P
ad S
W
7 D
S 8
6 D
∗ 5 : w/ Audio SW in Steering Wheel
4
(∗1)(∗2)
1
W
2
L
1
LGV
S20
P
2
SW2
8
3
D
434
GND
R
(∗4)
S15
(∗3)
RR–
5
RR+RL–
BG1
RL+FR–
10
FR+FL–
BB1
FL+
–+–+
S16
∗ 4 : Access Cab
IL2
SWG
5
EAU
4 BG15 BB1
S17
4
L–Y
SW1
GR
∗ 1 : w/ Door Lock Control
–+–
S18
+
B Y
S19
P( ∗
1)
V( ∗
1)
LG L
LG( ∗
2)
V( ∗
1)
LG L
B( ∗
4)
W( ∗
3)
R
R 1(B), R 2(C), R 3(D)
W
P( ∗
1)
B Y
∗ 3 : Double Cab
R W
LG( ∗
2)
BR
BR
Spi
ral C
able
Radio Receiver Assembly
Speaker(Front Door RH)
Spe
aker
( Tw
eete
r R
H)
Speaker(Front Door LH)
Spe
aker
( Tw
eete
r LH
)
Speaker(Rear Door RH)
Speaker(Rear Door LH)
(BAT)(ACC)
LH
TOYOTA TACOMA (EM01D0U)
261
: Parts Location
Code See Page Code See Page Code See Page
R1 B 45
S16
47 (*1)
S19
47 (*1)
R2 C 45 S16 48 (*2) S19 48 (*2)
R3 D 45
S16
49 (*3)
S19
49 (*3)
S8 45S17
47 (*1)
S20
47 (*1)
S15
47 (*1)S17
48 (*2) S20 48 (*2)
S15 48 (*2)S18
47 (*1)
S20
49 (*3)S15
49 (*3)S18
48 (*2)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1J 29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IC154 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC254 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE1 54 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IK155 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IK255 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IL2 55 Instrument Panel Wire and Floor Wire (Right Kick Panel)
BA1 56 (*1) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Center Pillar)
BB1 56 (*1) Rear Door No.1 Wire and Floor Wire (Under the Right Center Pillar)
BF1 57 (*2) Rear Door No.2 Wire and Floor No.2 Wire (Under the Left Quarter Panel)
BG1 57 (*2) Rear Door No.1 Wire and Floor Wire (Under the Right Quarter Panel)
: Ground Points
Code See Page Ground Points Location
ID 54 Instrument Panel Brace RH
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
262
TOYOTA TACOMA (EM01D0U)
Combination Meter
Tem
p.
Con
trol
Tach
oC
ontro
l
Doo
r
Spe
edC
ontro
l
ODO/TRIP( ∗2)
A
3 A
A1 12 A11
6 A
1C16
1K13
9 A 7 ASE
7. 5AECU–B
W
2
( M/T
)
2
18 AA21
R–Y
( M/T
)
IH19IH18
G–W
PF7
PA4
V W
10AIG1
1J9
( M/T
)
( M/T
)
PP
( M/T
)
( M/T
)
3 1J
7. 5AGAUGE
B1
R–Y
V
B2
A11 A18
B16
R
R–Y
B17
2 B
A17
R–W
Doo
r C
ourte
sy S
W( D
river
's
Sid
e)
SI
Unl
ock
War
ning
SW
1
( M/T
)
2
( M/T
)
3
GR
–B
R
G–Y
R–Y
G–B
W
B–W
GR
–B
B–W
B–W
GR
–B
IG+B
–W
( ∗2)
( A/T
)
C 9(A), C10(B)
Eng
ine
Con
trol
Mod
ule
J 4(
A), J
5( B
)
A/C
Am
plifi
er
Dat
a Li
nkC
onne
ctor
3
Bac
k–U
p La
mp
SW
Illum
inat
ion
V 1
Bod
y E
CU
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
Veh
icle
Spe
ed S
enso
r( C
ombi
natio
n M
eter
)
Combination Meter
Junc
tion
Con
nect
or
(BAT)(IG)(IG)
5 2
3 1
HE
AD
Rel
ay
2C
2 2
B
Battery
1
RR
R
R
W
PF10
3
SPD
T14
V–W
Tire
Pre
ssur
eM
onito
r E
CU
TOYOTA TACOMA (EM01D0U)
263
BR
AK
E
AB
S
Driv
er'
sS
eat B
elt
SR
S
Fuel
Blin
k FuelControl
Rev
erse
Rev
erse
Rev
erse
Buz
zer
A20
B–O O
V 8
11 B10 B9 B33 A4 AA810 A
19 A 40 A
PD2
Y–B
PD5
B–Y
PE5
O
PC12
B–W LG
ID22 ID25
BR
–W
IA122
LG
3
2
W–B
EB
( ∗1)
G
V–W
Y–BO ( ∗1)
( ∗1)
C 9(A), C10(B)
A9B10
1E5
1K14
V–W
(4WD)(2WD)
82 3
SPDSPDSPD
A27 SI
V–W
E 7
V–W
V–W
V–W
∗ 2 : 1GR–FE M/T∗ 1 : w/o VSC
IM16
F19
B 2(
B)
13 PE
Fron
t Sea
t Inn
er B
elt
( Driv
er'
s S
ide)
Airb
ag S
enso
rA
ssem
bly
Cen
ter
Rhe
osta
t
Ski
d C
ontro
l EC
Uw
ith A
ctua
tor
A12
A13
J 4(
A)
Bra
ke F
luid
Lev
elW
arni
ng S
W
Eng
ine
Con
trol
Mod
ule
Combination Meter
Junc
tion
Con
nect
or
Vol
tage
Inve
rter
Fuel
Suc
tion
Pum
pan
d G
age
Ass
embl
y
Acc
esso
ry M
eter
F12(
A), F
14( B
)4W
D C
ontro
l EC
U
50AJ/B
2
2
1A6
2 5
1 3
L
(BAT)
TAIL
Rel
ay 10ATAIL
G
V–W
R
R R
R
1J7
B1
B2
Tire
Pre
ssur
eA23
Rev
erse
Tire
Pre
ssur
eM
onito
r E
CU
L
264
TOYOTA TACOMA (EM01D0U)
Combination MeterM
AIN
TR
EQ
D
VS
C O
FF
VS
C T
RA
C
A
Slip
DA
C
AU
TO L
SD
CR
UIS
E
A/T
OIL
TE
MP
Cha
rge
Oil
Pre
ssur
e
4WD
Mal
func
tion
Indi
cato
r La
mp
Rea
r D
iff.
Lock
4LO
17 A 39 A24 A A35 36 A38 A14 B16 B15 B25 A16 A 37 B13
IH13
1
GR
LG–B
LG–B
R
BR
–W
L–Y
BR P LG
LG–R
R–W Y
C 9(A), C10(B)
L–W
L–B
Gen
erat
or
4WD
Con
trol E
CU
Eng
ine
Con
trol
Mod
ule
4WD
Con
trol E
CU
Skid Control ECU with Actuator
( ∗8)
( w/ V
SC
)
( w/ V
SC
)
( w/ V
SC
)
( ∗7)
E 3
Eng
ine
Oil
Pre
ssur
e S
W
Combination Meter
( ∗5)
2 5
1 3
4
2 2 2
2 2
DIMRelay
Y–B
R–B
R
R
R–B
W(∗3)
R R W ( ∗3)
TOYOTA TACOMA (EM01D0U)
265
32
R–B
A
Turn
LH
Turn
RH
2(∗5
)L(
∗6)
L PRND
4(∗5
)3(
∗6)
3(∗5
)2(
∗6)
Hig
h B
eam
A2
IA
J 12
B12A28 A27 B8 B7 B6 B5 B4 B3 B2 B1
G–B
R–W
L–WW
B( ∗
5)
Y( ∗
5)
V( ∗
5)
C 9(A), C10(B)
G–Y
L–Y
L–B
P
W–B
G–Y
( ∗6)
Hea
d ( ∗
3)Ta
il ( ∗
4)
R–Y
( ∗6)
Y( ∗
6)
∗ 7 : w/ Downhill Assist Control∗ 8 : w/ Auto LSD
∗ 5 : 1GR–FE A/T∗ 6 : 2TR–FE A/T
IA120 IA135
2A1 2A22
2A2 2A19
10AHEAD(HI LH)
2
2
10AHEAD(LO RH)
2
2R
–BPP
R–B
Turn
Sig
nal F
lash
er
Shi
ft Lo
ckC
ontro
l EC
U
Par
k/N
eutra
lP
ositi
on S
W
Shi
ft Lo
ckC
ontro
l EC
U
Par
k/N
eutra
lP
ositi
on S
W
( ∗5)
Combination Meter
JunctionConnector
( ∗5)
R–B
W(∗3)
2 2
1 1
(∗3) (∗3)
( ∗3)
( ∗3)( ∗
4)
( ∗3)
( ∗3)
( ∗3)
∗ 4 : Canada∗ 3 : USA
266
TOYOTA TACOMA (EM01D0U)
Combination Meter
: Parts Location
Code See Page Code See Page Code See Page
A27 44 E7 44 J4 A 45
B2 B40 (1GR–FE) F12 A 44 J5 B 45
B2 B42 (2TR–FE) F14 B 44 T14 45
C9 A 44
F19
46 (*1)V1
41 (1GR–FE)
C10 B 44 F19 48 (*2)V1
43 (2TR–FE)
E340 (1GR–FE)
F19
49 (*3)V8
47 (*1)E3
42 (2TR–FE) J1 45V8
48 (*2)
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1A28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1C28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1E 28 Roof Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
2C 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
PA 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PC
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PD
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)PE
36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA1 54 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
ID2 54 Frame Wire and Instrument Panel Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
IM1 55 Floor No.3 Wire and Instrument Panel Wire (Under the Console Box)
: Ground Points
Code See Page Ground Points Location
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
* 1 : Double Cab * 2 : Access Cab * 3 : Regular Cab * 4 : Separate Seat * 5 : Bench Seat
TOYOTA TACOMA (EM01D0U)
267
Memo
268
TOYOTA TACOMA (EM01D0U)
Air Conditioning
OFF
LO
M1
M2
HI
Blo
wer
SW
M1M2HILO
3 2
4
5 1
2
EA
2
DC13
DD2
EB
2 22
DC11
33 2A
1C14
29 2A
10AIG1NO. 2
50AHEATER
2
2
IA48
1
2
A2 A3 A4 A7
34 IA1
10AIG1
9 1J
3 4
M1M2
W–B
B–Y
P
LG
LG LGRP
LGR
W–B
B–Y
B–Y Y
Y
W–L
L–B
G–Y
W–L
B 3
Y
B–Y
W–L
W–B
W–B
W–B
A15(A), A16(B)
HEATERRelay
BlowerMotor
A/C Control Assembly
HI LO
2 1
W–L
W–L
Blo
wer
Res
isto
rB
4
M
(IG)(BAT)(IG)
M
TOYOTA TACOMA (EM01D0U)
269
ACID MR/FREC
F/R
A/C
A/C
MSETIG+AMSWGNDBGNDA
/C S
W
F/R
SW
B1B12B2B4
A6 B9 B6 B10 B5
41 2
GND A/M IG
IE
W–B
J13
1432
PF14PE1
PF7 PE9
PE8
W–B
B–Y
P
LG LG
L–W
V
G–B
GR
LG–B
P
P
W–B
B–Y
W–B
W–B
W–B
D 2
A15(
A), A
16( B
)
W–B
W–B
W–B
P P
LG–BP
R–W
W–B
W–B
W–B
P
P
V
W–B
L–W
G–B
Damper Servo Motor(Air Mix)
A/C
Con
trol A
ssem
bly
JunctionConnector
M
Amplifier
270
TOYOTA TACOMA (EM01D0U)
Air Conditioning
2
33 IA1
3
2
13
12 32
1
IA132
EA
II15 IJ13
M
REC FRS
2 1
2
MR/F
18
LG
17
A/C
15 16 7 9 11 10
4
514123212
ACID RDEF
PRSVER1GNDBLRHDEF
ACT
IG+
AC1ACT
P
AC1
LG
G–WL
G–WL
P–B
REC
V–W
L–WV
G–BGR
FRS
W–B
B–Y
W–B
P
P
( ∗1)
LG–B
LG
O
L–W
O
W–B
V
W–B
G–Y
G–B
G–Y
B–Y
GR
W–B
W–B
P 5
D 3
D 1
A14
J14
Pre
ssur
e S
W1
A/C Amplifier
Dam
per
Ser
vo M
otor
( Air
Ven
t Mod
e)
Dam
per
Ser
vo M
otor
( Air
Inle
t)
JunctionConnectorM
IG MODE DEF GND
Amplifier
D25 D24
Eng
ine
Con
trol
Mod
ule
E 4(
A), E
7( D
)
A32 (∗2)(∗1)21 A
E 2
A28
Eng
ine
Coo
lant
Tem
p.
Sen
sor
THW E2
10A
A/C
Y–B BR
2
1
1
2
TOYOTA TACOMA (EM01D0U)
271
A18
B17
V
7. 5AGAUGE
13 1K
16 1C
2
2
7. 5AECU–B
R
1 3
2 5
2
LG
2
2 2
MG CLTRelay
IA131
1J3
EA13
21
PE3 PE4 10 PB
3
2 1
IH110
A11
B2
A/C
Loc
kS
enso
r
24 21
6432219
1
7 9
LOCKTESGIGNTW
R
LG
RR
B–W
B
GR
–B
B–W
GR
–B
G
MGC
GR
–WR
–W
BWB–W
GR
–B
WWW
A/C
Mag
netic
Clu
tch
VV
V
LG
1K9
Tem
p.
Con
trol
Tach
oC
ontro
l
A 1
A17
C 9
2
W–B
2
IA
W–B
J 1
A14
J 4(
A), J
5( B
)
A/C
Com
pres
sor
A/C Amplifier
A/C
The
rmis
tor
No.
1
Com
bina
tion
Met
er
JunctionConnector
Junc
tion
Con
nect
or
∗ 2 : 2TR–FE∗ 1 : 1GR–FE
1
2
(IG)(BAT)
272
TOYOTA TACOMA (EM01D0U)
Air Conditioning
The A/C amplifier receives various signals, I.E., the engine RPM from the engine control module and coolant temperaturefrom the engine control module, etc.When the engine is started and the A/C SW (A/C control assembly) is on, a signal is input to the A/C amplifier.As a result, current flows from IG1 NO.2 fuse to TERMINAL 2 of the MG CLT relay to TERMINAL 1 to TERMINAL MGC ofthe A/C amplifier to GROUND, turning the MG CLT relay on, so that the magnetic clutch is on and the A/C compressoroperates.If the integration control and panel detects the following conditions, it stops the air conditioning:∗ Evaporator outlet air temperature is too low.∗ There is a marked difference between the compressor speed and the engine speed.∗ The refrigerant pressure is abnormally high or abnormally low.∗ The engine speed is too low.∗ Rapid acceleration occurs.
: Parts Location
Code See Page Code See Page Code See Page
A140 (1GR–FE) C9 44 J1 45
A142 (2TR–FE) D1 44 J4 A 45
A14 44 D2 44 J5 B 45
A15 A 44 D3 44 J13 45
A16 B 44E2
40 (1GR–FE) J14 45
A17 44E2
42 (2TR–FE)P5
41 (1GR–FE)
B3 44 E4 A 44P5
43 (2TR–FE)
B4 44 E7 D 44
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 24 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C 28 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
1K29 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
2A 24 Engine Room J/B (Engine Compartment Left)
DC34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
DD34 Engine Room Main Wire and Instrument Panel J/B No.1 (Left Kick Panel)
PB 36 Engine Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PE36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
PF36 Instrument Panel Wire and Instrument Panel J/B No.2 (Right Side of Glove Box)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA152 (1GR–FE)
Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)EA153 (2TR–FE)
Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)
IA154 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IA454 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IH1 55 Engine Wire and Instrument Panel Wire (Right Side of Glove Box)
II1 55 Instrument Panel Wire and Instrument Panel Wire (Instrument Panel Brace RH)
IJ1 55 Instrument Panel Wire and Instrument Panel Wire (Right Kick Panel)
System Outline
TOYOTA TACOMA (EM01D0U)
273
: Ground Points
Code See Page Ground Points Location
EA52 (1GR–FE)
Front Right FenderEA53 (2TR–FE)
Front Right Fender
EB52 (1GR–FE)
Front Left FenderEB53 (2TR–FE)
Front Left Fender
IA 54 Left Kick Panel
IE 54 Right Kick Panel