VEHICLE STABILITY CONTROL SYSTEM Slip Indicator Light Remains ON

DESCRIPTION

The skid control ECU is connected to the combination meter via the CAN and multiplex communication systems.

The slip indicator light blinks during VSC and/or TRC operation.

When the system malfunctions, the slip indicator light comes on to warn the driver Click here.

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 slip indicator light will come on.

WIRING DIAGRAM

A0160DEE02

INSPECTION PROCEDURE

Note

When replacing the skid control ECU, perform zero point calibration and store system information Click here.

PROCEDURE


  1. 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

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK MULTIPLEX COMMUNICATION SYSTEM


    1. Check if a multiplex communication system DTC is output Click here.

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

    B

    INSPECT MULTIPLEX COMMUNICATION SYSTEM Click here

    A

  3. 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 Click here

    OK

  4. CHECK BATTERY


    1. Check the battery voltage.

      Standard Voltage
      11 to 14 V

    NG

    CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2UR-GSE) Click here

    OK

  5. 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 mode on the intelligent tester Click here.

      ABS/VSC/TRC
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      TRC/VSC Off Mode VSC OFF switch / NORMAL, TRC OFF or VSC OFF

      NORMAL: Normal mode

      TRC OFF: TRC off mode

      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.

    NG

    INSPECT VSC OFF SWITCH Click here

    OK

  6. INSPECT COMBINATION METER ASSEMBLY


    1. Turn the engine switch off.

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

    3. Check the combination meter.

      OK
      The slip indicator light turns on or off in accordance with the intelligent tester operation.

      Tech Tips

      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.


    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    REPLACE SKID CONTROL ECU Click here

  7. INSPECT VSC OFF SWITCH


    1. A0163E0E01

      Turn the engine switch off.

    2. Disconnect the VSC OFF switch connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      3 (+) - 4 (E) Switch is not pushed in 10 kΩ or higher

    NG

    REPLACE VSC OFF SWITCH Click here

    OK

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


    1. A0161WWE03

      Disconnect the skid control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J77-7 (CSW) - J37-3 (+) Always Below 1 Ω
      J77-7 (CSW) - Body ground Always 10 kΩ or higher
      J37-4 (E) - Body ground Always Below 1 Ω

      Tech Tips

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SKID CONTROL ECU Click here