VEHICLE STABILITY CONTROL SYSTEM TRC OFF Indicator Light Remains ON

DTC Code DTC Name
TRC OFF Indicator Light Remains ON

DESCRIPTION

The skid control ECU is connected to the combination meter assembly 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 traction control is turned off, the TRC OFF indicator is displayed on the multi-information display.

WIRING DIAGRAM

Refer to VSC OFF Indicator Light Remains ON (Click here).

CAUTION / NOTICE / HINT

Note:

When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration (Click here).

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    Click here

    INSPECT CAN COMMUNICATION SYSTEM

    (Click here)

  2. CHECK IF BRAKE ACTUATOR ASSEMBLY CONNECTOR IS SECURELY CONNECTED

    Click here

    CONNECT CONNECTOR TO BRAKE ACTUATOR ASSEMBLY CORRECTLY

  3. READ VALUE USING GTS (TRC/VSC OFF MODE)

    Click here

    INSPECT METER / GAUGE SYSTEM

    (Click here)

    USE SIMULATION METHOD TO CHECK

    (Click here)

  4. PERFORM ACTIVE TEST USING GTS (MULTI-INFORMATION DISPLAY (TRC OFF INDICATOR))

    1. Select the Active Test on the GTS (Click here).

      Table 1. ABS/VSC/TRC

      Tester Display

      Test Part

      Control Range

      Diagnostic Note

      TRC(TRAC) OFF Indicator Light

      Multi-information display (TRC OFF indicator)

      Display ON/OFF

      Can be observed on the combination meter assembly

      Vehicle condition: Vehicle stopped

    2. Check the multi-information display (TRC OFF indicator) on the combination meter assembly turns on or off in accordance with the GTS operation.

      OK

      The multi-information display (TRC OFF indicator) turns on or off in accordance with the GTS operation.

    INSPECT COMBINATION METER ASSEMBLYClick here

  5. INSPECT VSC OFF SWITCH

    Click here

    REPLACE VSC OFF SWITCH

    (Click here)

  6. CHECK HARNESS AND CONNECTOR (VSC OFF SWITCH - BRAKE ACTUATOR ASSEMBLY AND BODY GROUND)

    Click here

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT COMBINATION METER ASSEMBLY

    1. Turn the ignition switch off.

    2. Perform an Active Test of the combination meter assembly using the GTS (Click here).

    3. Check the combination meter assembly.

      OK

      The multi-information display turns on or off in accordance with the GTS operation.

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)

    INSPECT METER / GAUGE SYSTEM

    (Click here)