VEHICLE STABILITY CONTROL SYSTEM VSC OFF Indicator Light Remains ON

DESCRIPTION

The skid control ECU is connected to the combination meter 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 VSC control is turned off, the VSC OFF indicator light will come on.

WIRING DIAGRAM

A019MJ6E02

INSPECTION PROCEDURE

Note

When replacing the brake actuator assembly, 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 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

  3. 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 1AR-FE) C

    B

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

    C

    CHECK OR REPLACE CHARGING SYSTEM AND BATTERY (for 1AR-FE) Click here

    A

  4. 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.

      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.

    NG

    INSPECT VSC OFF SWITCH Click here

    OK

  5. 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 VSC OFF 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 BRAKE ACTUATOR ASSEMBLY Click here

  6. INSPECT VSC OFF SWITCH


    1. A019LMUE02

      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
      6 (+) - 7 (E) Switch pushed in Below 25 Ω
      6 (+) - 7 (E) Switch not pushed in 10 kΩ or higher

    NG

    REPLACE VSC OFF SWITCH Click here

    OK

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


    1. A019KIDE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)
      *2

      Front view of wire harness connector

      (to VSC OFF Switch)

      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
      A44-30 (CSW) - F33-6 (+) Always Below 1 Ω
      A44-30 (CSW) - Body ground Always 10 kΩ or higher
      F33-7 (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 BRAKE ACTUATOR ASSEMBLY Click here