VEHICLE STABILITY CONTROL SYSTEM(for TMC Made) Slip Indicator Light Remains ON

DESCRIPTION

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

The Slip indicator light blinks during VSC, TRC operation.

If any of the following is detected, the Slip indicator light remains on:


WIRING DIAGRAM

A01VGLLE01
*1 Slip
*2 Skid Control ECU (Brake Actuator Assembly)
*3 Combination Meter Assembly
*4 CAN Communication Line

CAUTION / NOTICE / HINT

Note


  • When replacing the brake actuator assembly, perform zero point calibration Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. 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.

    NG

    CONNECT CONNECTOR TO ECU CORRECTLY

    OK

  2. CHECK CAN COMMUNICATION SYSTEM


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

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

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

  3. INSPECT BATTERY


    1. Check the battery voltage.

      Standard voltage
      11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (for 1KR-FE) B
      NG (for 1NR-FE) C

    B

    CHECK OR REPLACE CHARGING SYSTEM OR BATTERY Click here

    C

    CHECK OR REPLACE CHARGING SYSTEM OR BATTERY Click here

    A

  4. CHECK TERMINAL VOLTAGE (IG1 TERMINAL)


    1. Disconnect the skid control ECU (brake actuator assembly) connector.

    2. Turn the ignition switch to ON.

    3. A01VHP0E01
      Text in Illustration
      *A except LHD with CVT
      *B for LHD with CVT
      *a

      Front view of wire harness connector

      (to Skid control ECU)

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

      Standard Voltage (except LHD with CVT)
      Tester Connection Switch Condition Specified Condition
      A54-34 (IG1) - Body ground Ignition switch ON 11 to 14 V
      Standard Voltage (for LHD with CVT)
      Tester Connection Switch Condition Specified Condition
      A56-34 (IG1) - Body ground Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (w/o Stop and Start System) B
      NG (w/ Stop and Start System) C

    4. Turn the ignition switch off.


    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)

    C

    GO TO STOP AND START SYSTEM Click here

    A

  5. CHECK HARNESS AND CONNECTOR (GND1 TERMINAL)


    1. A01VL4JE01
      Text in Illustration
      *A except LHD with CVT
      *B for LHD with CVT
      *a

      Front view of wire harness connector

      (to Skid control ECU)

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

      Standard Resistance (except LHD with CVT)
      Tester Connection Condition Specified Condition
      A54-1 (GND1) - Body ground Always Below 1 Ω
      Standard Resistance (for LHD with CVT)
      Tester Connection Condition Specified Condition
      A56-1 (GND1) - Body ground Always Below 1 Ω

    2. Reconnect the skid control ECU (brake actuator assembly) connector.


    NG

    CHECK FOR INTERMITTENT PROBLEMS (GND1 CIRCUIT) Click here

    OK

  6. READ VALUE USING INTELLIGENT TESTER (SLIP INDICATOR LIGHT)


    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.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Slip Indicator Light Slip indicator light / ON or OFF OFF -

    7. When performing the Slip Indicator Light Active Test, check Slip Indicator Light in the Data List.

      ABS/VSC/TRC
      Tester Display Test Part Control Range Diagnostic Note
      Slip Indicator Light Slip indicator light Indicator light ON/OFF Observe the combination meter.
      Result
      Result Proceed to
      Data List Display Data List Display when Performing Active Test ON/OFF Operation
      ON Changes between ON and OFF A
      Does not change between ON and OFF (for LHD) B
      Does not change between ON and OFF (for RHD) C
      OFF Changes between ON and OFF A
      Does not change between ON and OFF (for LHD) B
      Does not change between ON and OFF (for RHD) C

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

  7. REPLACE COMBINATION METER ASSEMBLY


    1. Turn the ignition switch off.

    2. Replace the combination meter assembly Click here.


    NEXT

  8. INSPECT COMBINATION METER ASSEMBLY


    1. Perform Active Test of the combination meter assembly using the intelligent tester Click here.

      OK
      The Slip indicator light turns on or off in accordance with the intelligent tester.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here