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VEHICLE STABILITY CONTROL SYSTEM TRC OFF Indicator Light Remains ON

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DTC Code DTC Name
  TRC OFF Indicator Light Remains ON
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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 TRC control is turned off, the TRC OFF message will be displayed on the multi-information display.

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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Check if a CAN communication system DTC is output (Click here).

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

  2. Click here

    CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED


    1. Check if the skid control ECU connector is securely connected.

      OK
      The connector is securely connected.

  3. Click here

    CHECK BATTERY


    1. Check the battery voltage.

      Standard Voltage
      11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (for 2GR-FE) B
      NG (for 2AZ-FE) C

  4. Click here

    READ VALUE USING INTELLIGENT TESTER (VSC OFF SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Select the Data List on the intelligent tester (Click here).

      Table 1. ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      TRC/VSC Off Mode VSC OFF switch / Normal, TRC OFF, Unknown or VSC OFF

      Normal: Normal

      TRC OFF: TRC off mode

      Unknown: Unspecified

      VSC OFF: VSC off mode

      		 -

    4. Using the intelligent tester, check the switch condition on the intelligent tester changes according to VSC OFF switch operation.

      OK
      The intelligent tester display changes according to VSC OFF switch operation.

  5. Click here

    INSPECT COMBINATION METER ASSEMBLY


    1. Turn the engine switch off.

    2. Perform the Active Test of the combination meter assembly using the intelligent tester (Click here).

    3. Check the combination meter assembly.

      OK
      The multi-information display turns on or off in accordance with the intelligent tester operation.
      Tip:

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (Click here).


  6. Click here

    INSPECT VSC OFF SWITCH


    1. A01CFB7E01

      Disconnect the VSC OFF switch connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 (+) - 3 (E) Switch is pushed in Below 1 Ω
      1 (+) - 3 (E) Switch is not pushed in 10 kΩ or higher

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


    1. A01CAT8E03

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A10-17 (CSW) - G31-1 (+) Always Below 1 Ω
      A10-17 (CSW) - Body ground Always 10 kΩ or higher
      G31-3 (E) - Body ground Always Below 1 Ω
      Tip:

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


  8. Click here

    REPLACE BRAKE ACTUATOR ASSEMBLYClick here

  9. Click here

    INSPECT CAN COMMUNICATION SYSTEMClick here

  10. Click here

    CONNECT CONNECTOR TO ECU CORRECTLY

  11. Click here

    CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2GR-FE)Click here

  12. Click here

    CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2AZ-FE)Click here

  13. Click here

    REPLACE COMBINATION METER ASSEMBLYClick here

  14. Click here

    REPLACE VSC OFF SWITCH

  15. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR