VEHICLE STABILITY CONTROL SYSTEM VSC OFF Indicator Light does not Come 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 turns OFF, the VSC OFF indicator light will come on.

The VSC OFF indicator light will blink when the skid control ECU stores a DTC.

WIRING DIAGRAM

Refer to VSC OFF Indicator Light Remains ON Click here.

INSPECTION PROCEDURE

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 CAN COMMUNICATION SYSTEM


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

      Result
      Result Proceed to
      DTC not output A
      DTC output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

  2. INSPECT SKID CONTROL ECU (CSW TERMINAL)


    1. Turn the ignition switch off.

    2. A01196QE09
      Text in illustration
      *1

      Front view of wire harness connector

      (to Skid Control ECU)

      Disconnect the A16 or A17 skid control ECU connector.

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

      Standard Resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      A16-30 (CSW) - Body ground VSC OFF Switch held ON Below 1 Ω
      A16-30 (CSW) - Body ground VSC OFF Switch OFF (Not pressed) 10 kΩ or higher
      for RHD
      Tester Connection Switch Condition Specified Condition
      A17-30 (CSW) - Body ground VSC OFF Switch held ON Below 1 Ω
      A17-30 (CSW) - Body ground VSC OFF Switch OFF (Not pressed) 10 kΩ or higher

    NG

    INSPECT VSC OFF SWITCH Click here

    OK

  3. INSPECT COMBINATION METER ASSEMBLY


    1. Reconnect the skid control ECU connector.

    2. Connect the intelligent tester to the DLC3.

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

      OK
      The VSC OFF indicator light turns ON or OFF in accordance with the intelligent tester.

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  4. INSPECT VSC OFF SWITCH


    1. Disconnect the VSC OFF switch.

    2. A0117XYE05

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      3 (E) - 6 (+) Switch is pushed in Below 1 Ω
      3 (E) - 6 (+) Switch is not pushed in 10 kΩ or higher

    NG

    REPLACE VSC OFF SWITCH Click here

    OK

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


    1. A011AS1E01
      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)

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A16-30 (CSW) - D54-6 (+) Always Below 1 Ω
      A16-30 (CSW) - Body ground Always 10 kΩ or higher
      D54-3 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      A17-30 (CSW) - D54-6 (+) Always Below 1 Ω
      A17-30 (CSW) - Body ground Always 10 kΩ or higher
      D54-3 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here