©2001 CaterpillarAll Rights Reserved

Printed in U.S.A.

SENR9578-01October 2001

C-9 Engine For Claas

Electrical System

CLJ1-UP

Combine Applications

DT Connector Receptacle DT Connector Plug

Plug Wedge

Plug Wedge

Plug Wedge

Receptacle Wedge

Receptacle Wedge

Receptacle Wedge

HD Connector Receptacle HD Connector Plug

Pin Contact Sealing PlugSocket Contact

Speed/Timing Sensor Connectors

150 Series Receptacle

IAPCV Connector

150 Series Plug

Harness Side

ECM Connector P1

ECM Connector P2

Harness SideECM Side

ECM Side

ECM Connectors

G850/BUINLET AIR HEATERJ702/BKIAH RELAY RETURN

INLET AIRHEATER

INLET AIRHEATERRELAY

E797/WHE798/PK

H478/BU998/BR

H477/YL

G850/BUJ702/BK

G850/BUJ702/BK

AIR INLETGROUND STUD

GROUNDSTRAP

INJECTORCYLINDER

NO.1

P301/J30121

INJECTORCYLINDER

NO.2

P302/J30221

INJECTORCYLINDER

NO.3

P303/J30321

INJECTORCYLINDER

NO.4

P304/J30421

INJECTORCYLINDER

NO.5

P305/J30521

INJECTORCYLINDER

NO.6

P306/J30621

3087A

87

85 86

LEFT SIDE VIEW

PlugO

il Grade

SensorSpeed/Tim

ingSecondary Engine

SensorSpeed/Tim

ingPrim

ary Engine

(IAPCV)

Control ValvePressureActuationInjection

Sensor (Middle)

Temperature

Engine Oil

High Pressure Sensor

PressureAtm

ospheric

J1/P1C

onnectorEC

M

J2/P2C

onnectorEC

M

SensorO

il PressureEngine

Sensor (End)Tem

peratureEngine O

ilH

igh Pressure

Pressure Sensor(Intake M

anifold Air)Turbo O

utlet

SensorAir Tem

peratureIntake M

anifold

P400C

onnector(TC

) ProbeC

alibrationTim

ingH

eater Relay

Inlet Air

SensorTem

peratureEngine C

oolant

PRIMARYSPEED/TIMING SENSOR

TURBO OUTLETPRESSURE SENSOR(INTAKE MANIFOLD AIR)(161-1704)

ENGINE COOLANTTEMPERATURE SENSOR(130-9811)

ENGINE OIL PRESSURESENSOR(161-1705)

SECONDARYSPEED/TIMING SENSOR

1E963/BKP401/J401

+5V

2

E965/BUE966/YL

E964/WH

12

ACB

G828/WHA746/PKG829/GN

995/BUG833/PK

P200/J200

P100/J100

P402/J402

SIGNALRETURN

SIGNALCOMMON

SIGNAL -SIGNAL +

SIGNAL -SIGNAL +

ATMOSPHERIC PRESSURESENSOR(161-1703)

ENGINE OIL (MIDDLE)TEMPERATURE SENSOR(191-6587)

INTAKE MANIFOLD AIRTEMPERATURE SENSOR(130-9811)

+5V

+5V

ACB

CAG826/BR

994/GY

G828/WHA747/GYG829/GN

1

A

2E795/YLG833/PK

G828/WH

G827/BU B

J101A/P101A

P201/J201

P203/J203

CB

12

C991/PKG829/GN

C967/BUG833/PK

P103/J103

SIGNALRETURN

SIGNALRETURN

SIGNALCOMMON

SIGNALCOMMON

P300/J300

TIMINGCALIBRATIONPROBECONNECTOR

21

G857/YLG856/WH P400

J2/P2

45

47

68

5439383736232249

55INJECTOR RETURN 1INJECTOR RETURN 2INJECTOR RETURN 3

INJECTOR 6INJECTOR 5INJECTOR 4INJECTOR 3INJECTOR 2INJECTOR 1

TIMING CALIBRATION PROBE -TIMING CALIBRATION PROBE +

PRIMARY SP/TMG SIG -4859583218

23

40

ENG OIL PRESS. SNSR (+5V)�ENG OIL PRESS. SNSR (RTN)

UNUSED

241635

4142

14

PRIMARY SP/TMG SIG +SECONDARY SP/TMG SIG -SECONDARY SP/TMG SIG +

COOL. TEMP. SNSRPASSIVE SNSR COMMON

ANALOG SNSR POWER (+5V)ANALOG SNSR COMMON

TURBO OUTLET PRESS. SNSRATMOSPHERIC PRESS. SNSR

ENG OIL PRESS. SNSRUNUSED

INLET MANIFOLD AIR TEMP. SNSR

UNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSED

UNUSEDUNUSEDUNUSED

OIL GRADE RETURN

UNUSED

678

10111315

192526

17

3031

14

43

69

52535657

70

51

T958/YL

T960/DK-BU

T962/WH

T956/GYT955/GNT954/GYT953/DK-BUT952/BRT951/YLG857/YLG856/WHE963/BKE964/WHE965/BUE966/YL995/BUG833/PKG828/WHG829/GNA746/PKA747/GY994/GYC991/PKC967/BU

OIL GRADE CODE 1UNUSEDUNUSED 64

56050

912

OIL GRADE CODE 2

63

ELECTRONIC CONTROL MODULE (ECM)

INJECTOR RETURN 4INJECTOR RETURN 5INJECTOR RETURN 6

T950/GNT949/BUT948/BRT947/YLT946/PUT945/GY

T950/GNT949/BUT948/BRT947/YLT946/PUT945/GY

21

(MIDDLE) ENGINE OIL TEMP. SNSR 34IAP CONTROL VALVE - 62IAP CONTROL VALVE + 61

INJ. ACTUATION PRESS. SNSR 27

INJECTOR ACTUATIONPRESSURE SENSOR(167-1708)

+5VG828/WHJ204/P204

2

1

G849/BRG829/GN

SIGNALRETURN

6

3

78

54

11109

12

16

2

1

3456

7

89

15

11121314

10

2

22

211

3

CBA

BCA

INJECTOR ACTUATIONPRESSURE CONTROL VALVE(IAPCV)2

1G854/PKG855/PU

P500/J500SIGNAL +SIGNAL -

ENGINE OIL (END)TEMPERATURE SENSOR(191-6587)

12K882/BU

G833/PK

J101B/P101BSIGNALCOMMON

21E798/PK

E797/WH

NOT USED

NOT USED

44 T957/PU

46 T959/BR

66UNUSED65UNUSED29UNUSED28UNUSED21UNUSED20UNUSED

67 T961/GN T958/YL

T960/BU

T962/WHT956/GY

T955/GN

T954/GY

T953/BU

T952/BR

T951/YLT957/PU

T959/BR

T961/GN

T958/YL

T960/DK-BU

T962/WHT956/GY

T955/GN

T954/GY

T953/DK-BU

T952/BR

T951/YLT957/PU

T959/BR

T961/GN

12

J501/P501

G849/BRG854/PKG855/PUE795/YL

(END) ENGINE OIL TEMP. SNSR 33 K882/BUG826/BRG827/BU

(169-3300)

CBA

NC

NC

COMPONENTS ARE SHOWN WITH THE KEY OFF

ALTERNATOR

+

GND

F59

F70FUSE

F34

- + 12VBATTERY

K53STARTRELAY

FROM K13/87A

TO MACHINE HARNESSTO MACHINEENGINE SENSORS

TO MACHINE HARNESS

FROM K51/87

TO OEM FUSES

BATTERYDISCONNECTSWITCH

SG

BATMTR

STARTINGMOTOR

J1 P11

67

12

UNUSEDUNUSEDUNUSEDUNUSED

1314

16

18

UNUSEDUNUSEDUNUSEDUNUSED

242526

28

UNUSEDUNUSEDUNUSED

DIAGNOSTIC LAMP

31

33

32

UNUSEDUNUSEDUNUSED

30

UNUSED

36

51

37

UNUSEDUNUSEDUNUSED

62

6869

UNUSED

UNUSEDUNUSED

UNUSED

UNUSEDUNUSEDUNUSEDUNUSED

UNUSEDUNUSEDUNUSEDUNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSED

UNUSEDUNUSED

UNUSED

55

UNUSED

35

UNUSED

RD

RD

57

43

39

48

11

67

46

17

5

66

15

3

2223

21

2

4

BR/WH

BL/YL

40

44

45

64

41

56

10

58

BLBL/YLBL

GR/BRGR

20

29

19

70

89

38

60

YLWH

ELECTRONIC CONTROL MODULE (ECM)

DIAGNOSTIC ENABLE SW

KEY ENGINE CRANK

BR/YL54COOLANT LEVEL

KEY ON

CAT DATA LINK -CAT DATA LINK +

+BAT.(UNSWITCHED)

COOLANT LEVEL RETURN

A +BAT.

START SWITCH

J

DE

G

HF

C

CAT DATA LINK -CAT DATA LINK +

- BAT.B

SERVICE TOOL CONN

DIAGNOSTICENABLESWITCH

DIAGNOSTICLAMP

120

B AC

TERMINATIONRESISTOR

COOLANT LEVELSWITCH

J1939

RD

RD

CONN MD

CONN G

CONN C22 PIN

WHYL

RD

27

5253

59

4947

4250

BRBR

34

6163

-BAT.-BAT.

BR/BLOR/BLYL/BL

+BAT.(UNSWITCHED)+BAT.(UNSWITCHED)

J1939 SHIELDJ1939 DATA +J1939 DATA -

J1939 SHIELDJ1939 DATA +J1939 DATA -

BR65

-BAT. 5 6 8 3 7 1

INPUT SIGNAL WIRES TO ECM

OUTPUT SIGNAL WIRES FROM ECM

SENSOR SUPPLY VOLTAGE

(+) BATTERY SUPPLY WIRES

SIGNAL PLUS

(-) BATTERY / SENSOR RETURN

SIGNAL MINUS

10W30GREEN

15W40RED

NOTE A: WHEN CHANGING OIL GRADES, THE OPERATOR MUST ENSURE THAT THECORRESPONDING PLUG IS INSERTED INTO THE WIRING HARNESS.FOR MORE INFORMATION REFER TO THE ENGINE OPERATION ANDMAINTENANCE MANUAL.

CIRCUITBREAKER

CIRCUITS WITHIN THIS AREA ARE RECOMMENDATIONS

OIL GRADEPLUGSNOTE A

0W20, 10W30, AND 15W40 PLUGSARE AVAILABLE IN SERVICE KIT214-7170.

10W30 AND 15W40 PLUGS ARESHIPPED WITH THE ENGINE.

C0W20BLACK

BA

18

14

16

6

5

4

3

1

2

15

13

17

789

101112

NOT PRESENT ON ALL ENGINES