ECU Data (for PRIUS, RX400h, GS450h and CAMRY HV)

The HV ECU and the battery ECU have a lot of ECU data.

The following describes the contents and uses of ECU data based on systems.

Data from which driving conditions can be learned are shown using a , and data which can be utilized for troubleshooting are shown using a . (Other data items also need to be confirmed, because they might be important depending on the situation.)

i.HV ECU ECU data + FFD, ECU data only, FFD only

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV

Sensor Signals

Vehicle Spd (Vehicle Spd)

km/horMPH

Shows vehicle speed (a vehicle speed signal from the skid control ECU).

Vehicle Speed (Resolver) (VHCL SPD (RSLVR))

km/horMPH

Shows vehicle speed calculated based on the speed sensor (resolver) for MG2.

+B (+B)

V

Shows voltage of the auxiliary battery (12 V).

(+B1 and +B2 terminals)

Ambient Temperature (Ambient Temp)

C or F

Shows temperature detected by the ambient temperature sensor for A/C system control.

Accel Pedal Pos #1 (Accel Pos #1)

%

Shows the accelerator pedal position sensor No.1.

Sensor voltage is multiplied by 20 and expressed as a percentage. e.g.: 15.6 ~ 72.1 %

Accel Pedal Pos #2 (Accel Pos #2)

%

Shows the accelerator pedal position sensor No.2.

Sensor voltage is multiplied by 20 and expressed as a percentage. e.g.: 31.7 ~ 89.0 %

Accel Sensor Main

(Accel Sensor M)

%

Shows main accelerator pedal position sensor main.

Accelerator Degree

%

Shows ECU judgement of accelerator pedal opening amount.

(0 ~ 100 %)

Shift Sensor Shift Pos (Shift Position)

Position

Shows shift lever position detected by the shift lever position sensor.

Shift Sensor Main (M Shift Sensor)

V

-

-

-

Shows output voltage of the shift position sensor (main). (Examples of actual measurement)

Shifting into the R position: approx. 0.8 V

Selector lever in its home position: approx. 2.4 V

Shifting into the B or D position: approx. 4.0 V

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV

Sensor Signals

Shift Sensor Sub (S Shift Sensor)

V

-

-

-

Shows output voltage of the shift position sensor (sub).Examples of actual measurements:

Shifting into the R position: approx. 0.8 V

Selector lever in its home position: approx. 2.4 V

Shifting into the B or D position: approx. 4.0 V

Shift Sensor Select Main (Sm Shift Sensor)

V

-

-

-

Shows output voltage of the select position sensor (main).Examples of actual measurements:

Selector lever in its home position: approx. 3.5 V

Shifting into the R, N or D position: approx. 1.5 V

Shift Sensor Select Sub (Ss Shift Sensor)

V

-

-

-

Shows output voltage of the select position sensor (sub). Examples of actual measurements:

Selector lever in its home position: approx. 3.5 V

Shifting into the R, N or D position: approx. 1.5 V

Shift Sensor Shift Pos (Shift Position)

ON-OFF

-

Shows the shift lever position (P, R, N, D or B).

Shift Sensor Switch-FD (SHIFT SW FD)

ON-OFF

-

Shows FD signal of the shift sensor.

Comes ON when the shift lever is in D or B.

Shift Sensor Switch-RV (SHIFT SW RV)

ON-OFF

-

Shows RV signal of the shift sensor.

Comes ON when the shift lever is in R.

Shift Sensor Switch-MJ (SHIFT SW MJ)

ON-OFF

-

Shows MJ signal of the shift sensor.

Comes ON when the shift lever position is identified.

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV

Engine Signals

Target Engine Rev (Target Eng Spd)

rpm

Shows target engine revolution speed.

Engine Spd (Engine Spd)

rpm

Shows actual engine speed.

Engine Revolution (Engine Rev)

Request Power (Power Rqst)

W

Shows requested engine power output value.

The HV ECU requests engine power output based on accelerator pedal position and vehicle speed.

Throttle Position (Throttle POS)

%

-

Shows the throttle position sensor No.1 opening amount.

Sensor voltage is multiplied by 20 and expressed as a percentage.

Calculate Load (Calc Load)

%

-

Shows engine load condition.

Intake Air Temperature (Intak Air Temp)

C or F

Shows engine intake air temperature.

Engine Coolant Temp (Coolant Temp)

C or F

Shows engine coolant temperature.

HCAC OBD Request (HCAC Absrt Rqst)

No-Request

Shows requests HC adherence OBD demand.

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV

MG2

Motor (MG2) Revolution (MG2 Rev)

rpm

Shows MG2 rpm (resolver).

Motor (MG2) Torq (MG2 Torq)

Nm

Shows requested MG2 torque value. (HV ECU MG ECU)

M (MG2) Trq Exec Val (MG2 Trq Exc Val)

Nm

Shows MG2 torque execution value (based on feedback from current sensors).

Motor Temp No1 (Motor1 Temp)

C or F

Shows MG2 temperature.

Open circuit (5 V): -50C (-58F)

Short circuit (0 V): 205C (401F)

Motor Temp MG2 (No1)

(MG2 (No1) Temp)

Inverter Temp-(MG2) (MG2 Invert Temp)

C or F

Shows MG2 inverter temperature.

Open circuit (0 V): 150C (302F)

Highest voltage (5 V): 15C (59F)

MG2 Gate Status (MG2 Gate)

ON-OFF

Shows shutdown condition of the MG2 inverter.

MG2 Control Mode (MG2 Ctrl Mode)

-

Shows waveform mode that drives MG2.

0 = PWM: Low speed (Torque change is small.)

1 = Variable PWM: Middle speed (Output increases.)

2 = Rectangular wave: High speed (Output increases.)

MG2 Carrier Frequency (MG2 Carrir Freq)

kHz

Shows PWM signal frequency to MG2.

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV

MG1

Generat or (MG1) Rev (MG1 Rev)

rpm

Shows MG1 speed (resolver).

Generator (MG1) Torq (MG1 torq)

Nm

Shows requested MG1 torque value. (HV ECU MG ECU)

G (MG1) Trq Exec Val (MG1 Trq Exc Val)

Nm

Shows MG1 torque execution value (based on feedback from current sensors).

Motor Temp No.2 (Motor2 Temp)

C or F

Shows MG1 temperature.

Open circuit (5 V): -50C (-58F)

Short circuit (0 V): 205C (401F)

Motor Temp MG2 (No2)

(MG2 (No2) Temp)

Inverter Temp-(MG1) (MG1 Invert Temp)

C or F

Shows MG1 inverter temperature.

Open circuit (0 V): 150C (302F)

Highest voltage (5 V): 15C (59F)

MG1 Gate Status (MG1 Gate)

ON-OFF

Shows shutdown condition of the MG1 inverter.

MG1 Control Mode (MG1 Ctrl Mode)

-

Shows waveform mode that drives MG1.

0 = PWM: Low speed (Torque change is small.)

1 = Variable PWM: Middle speed (Output increases.)

2 = Rectangular wave: High speed (Output increases.)

MG1 Carrier Frequency (MG1 Carrir Freq)

kHz

Shows PWM signal frequency of MG1.

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV

MGR

Rear Motor Revolution (Rr Motor Rev)

rpm

-

-

-

Shows MGR speed (resolver).

Rear Motor Torq (Rr Motor)

Nm

-

-

-

Shows requested MGR torque value. (HV ECU MG ECU)

Rear Mtr Trq Exec Val (R-Motor Trq Exc)

Nm

-

-

-

Shows MGR torque execution value

(based on feedback from current sensors).

Rear Motor Temp (Rr Motor Temp)

C or F

-

-

-

Shows MGR temperature.

Open circuit (5 V): -50C (-58F)

Short circuit (0 V): 205C (401F)

Rear Inverter Temp

C or F

-

-

-

Shows MGR inverter temperature.

Open circuit (0 V): 150C (302F)

Highest voltage (5 V): 15C (59F)

Shutdown (Rear) (Shutdown Rr)

ON-OFF

-

-

-

Shows shutdown condition of the MGR inverter.

Rmg Control Mode (Rmg Ctrl Mode)

-

-

-

-

Shows waveform mode that drives MGR.

0 = PWM: Low speed (Torque change is small.)

1 = Variable PWM: Middle speed (Output increases.)

2 = Rectangular wave: High speed (Output increases.)

Rmg Carrier Frequency (Rmg Carrir Freq)

kHz

-

-

-

Shows PWM signal frequency of MGR.

Item(Tester Abbreviation)

AvailableUnits

THS II

Description

Prius

RX400h

Highlander HV

GS450h

Camry HV