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 communication.

Pressing the VSC OFF switch turns off traction control and pressing and holding this switch turns off traction and VSC controls. If TRAC control is turned off, the TRAC OFF indicator light will come on.

WIRING DIAGRAM

Refer to TRAC OFF Indicator Light Remains ON TRAC OFF Indicator Light Remains On.

INSPECTION PROCEDURE

NOTICE:
* When replacing the brake actuator assembly, perform zero point calibration and store system information Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication system DTC is output Diagnosis System.

Result





B -- INSPECT CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

2. INSPECT SKID CONTROL ECU (CWS TERMINAL)

(a) Disconnect the skid control ECU connector.

(b) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





NG -- INSPECT VSC OFF SWITCH
OK -- Continue to next step.

3. PERFORM ACTIVE TEST USING TECHSTREAM (TRAC OFF INDICATOR LIGHT)

(a) Reconnect the skid control ECU connector.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(f) According to the display on the Techstream, perform the Active Test.

Combination Meter





(g) Check that the TRAC OFF indicator light on the combination meter turns on or off in accordance with the Techstream operation.

OK:

The TRAC OFF indicator light turns on or off in accordance with the Techstream operation.

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- REPLACE COMBINATION METER ASSEMBLY Removal

OK -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal

4. INSPECT VSC OFF SWITCH

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





NG -- REPLACE VSC OFF SWITCH Removal
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





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 -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE BRAKE ACTUATOR ASSEMBLY Removal