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VEHICLE STABILITY CONTROL SYSTEM(for TMMF Made) TRC OFF Indicator Light does not Come ON

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DTC Code DTC Name
  TRC OFF Indicator Light does not Come ON
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DESCRIPTION

The skid control ECU (brake actuator assembly) is connected to the combination meter via the CAN communication system.

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WIRING DIAGRAM

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

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CAUTION / NOTICE / HINT

Note:

When replacing the brake actuator assembly, perform calibration (Click here).

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PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output (Click here).

      Table 1. Result
      Result Proceed to
      DTC not output A
      DTC output B

  2. Click here

    INSPECT VSC OFF SWITCH


    1. Remove the VSC OFF switch (Click here).

    2. A01VKGLE06

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (+) - 3 (E) Switch is not pushed 10 kΩ or higher
      Switch is pushed Below 1 Ω
      Table 2. Text in Illustration
      *a

      Component without harness connected

      (VSC OFF Switch)

  3. Click here

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


    1. Disconnect the skid control ECU connector.

    2. Disconnect the VSC OFF switch connector.

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

      Standard Resistance (for LHD with CVT, and RHD)
      Tester Connection Condition Specified Condition
      A78-25 (CSW) - F57-6 (+) Always Below 1 Ω
      A78-25 (CSW) - Body ground Always 10 kΩ or higher
      F57-3 (E) - Body ground Always Below 1 Ω
      Standard Resistance (for LHD except CVT)
      Tester Connection Condition Specified Condition
      A79-25 (CSW) - F57-6 (+) Always Below 1 Ω
      A79-25 (CSW) - Body ground Always 10 kΩ or higher
      F57-3 (E) - Body ground Always Below 1 Ω

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    READ VALUE USING INTELLIGENT TESTER (TRC/VSC OFF MODE)


    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the tester on.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

    6. According to the display on the tester, read the Data List.

      Table 3. 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 mode

      TRC OFF: TRC off mode

      VSC OFF: VSC off mode

      		 -

    7. Check that the mode display changes according to the VSC OFF switch operation.

      OK
      Display changes according to the switch operation.
      Table 4. Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C