Toyota Sequoia (2005). Manual - part 304

F19152

Translate ECU

GND

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–1011

1205

INSPECTION PROCEDURE

1

Check DTC of the VSC (See page 

DI–911

)

CHECK:
Check skid control ECU DTC.
RESULT:

DTC is not output

A

DTC is output

B

B

Repair circuit indicated by the output code
(See page 

DI–921

).

A

2

Check for open circuit in harness and connector between GND terminal of the
translate ECU and body ground (See page 

IN–35

).

PREPARATION:
Disconnect the translate ECU connector.
CHECK:
Measure the resistance between the GND terminal and body
ground.
OK:

Continuity

NG

Repair or  replace harness or connector (Trans-
late ECU GND circuit).

OK

DI–1012

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1206

3

Replace the translate ECU and check if the trouble occurs again.

PREPARATION:
(a)

Clear the translate DTC (See page 

DI–911

).

(b)

Turn the ignition switch OFF.

CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:

DTC 94 is not output

A

DTC 94 is output

B

B

Check and repair suspension control ECU, ECM
or CAN communication system.

A

END

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

DI–1013

1207

DTC

Normal Code

Malfunction in Translate ECU

CIRCUIT DESCRIPTION

If any trouble occurs in the engine control system, the skid control ECU prohibits ABS & VSC control.

DTC No.

DTC Detecting Condition

Trouble Area

Normal Code

Conditions 1., 2. or 3. continue for 5 sec. or more:

1. Engine malfunction signal is sent from ECM.

2. Shift malfunction signal is sent from ECM.

3. The shift position is other than P and N, and P range

input voltage is 8 V or more.

ECM circuit

ECM

Brake fluid level

Brake fluid level warning switch circuit

Steering angle sensor

Translate ECU

Skid control ECU

Vehicle CAN

VSC+, VSC– circuit (CAN1 communication system)

INSPECTION PROCEDURE

1

Is DTC output for ECM?

Check DTC on page 

DI–43

.

YES

Repair engine control system according to the
output code (See page 

DI–58

).

NO

2

Check the DTC of the ABS and VSC (See page 

DI–911

).

CHECK:
Check skid control ECU DTC.
RESULT:

Only DTC ”C1203/53” of the VSC system is output

A

Except DTC ”C1203/53” of the VSC system are output

B

B

Repair ABS and VSC control system according
to the code output (See page 

DI–921

).

A

DI6OF–12

DI–1014

–

DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

1208

3

Replace the translate ECU and check if the trouble occurs again.

PREPARATION:
(a)

Clear the DTC (See page 

DI–911

).

(b)

Turn the ignition switch OFF.

CHECK:
Turn the ignition switch to the ON position, and check if the same DTC is stored in the memory.
PREPARATION:

DTC is not output

A

DTC is output

B

B

Replace skid control ECU 
(See page 

BR–52

).

NOTICE:
When replacing the skid control ECU, perform zero point
calibration (See page 

DI–897

).

A

END