TRAC OFF Indicator Light does not Come ON

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: TRAC OFF Indicator Light does not Come ON

TRAC OFF Indicator Light does not Come ON

DESCRIPTION

The skid control ECU is connected to the combination meter via CAN and multiplex communications.
When the traction OFF switch is turned on, the TRAC OFF indicator light will come on (for 2WD model).

WIRING DIAGRAM






INSPECTION PROCEDURE
NOTE: When replacing the brake actuator assembly, perform zero point calibration Programming and Relearning.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM
(a) Check if the CAN communication system DTC is output Diagnosis System.
Result:






B -- INSPECT CAN COMMUNICATION SYSTEM
A -- Continue to next step.
2. CHECK MULTIPLEX COMMUNICATION SYSTEM
(a) Check if the multiplex communication system DTC is output Reading and Clearing Diagnostic Trouble Codes.
Result:






B -- INSPECT MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.
3. CHECK TRAC OFF INDICATOR LIGHT
(a) Connect Techstream to the DLC3.
(b) Start the engine.
(c) Select the Active Test mode on Techstream Data List / Active Test.

ABS / VSC / TRAC:





(d) Check that "ON" and "OFF" of the TRAC OFF indicator light are indicated on the combination meter when using Techstream.
OK:
The TRAC OFF indicator light turns on or off in accordance with Techstream.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Problem Symptoms Table.

NG -- INSPECT COMBINATION METER ASSEMBLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY
4. INSPECT COMBINATION METER ASSEMBLY
(a) Turn the ignition switch off.
(b) Perform Active Test of the combination meter (meter CPU) using Techstream Meter / Gauge System.
OK:
The TRAC OFF indicator light turns on or off in accordance with Techstream.
HINT: If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- REPLACE BRAKE ACTUATOR ASSEMBLY