VEHICLE STABILITY CONTROL SYSTEM VSC Warning Light Remains ON

DESCRIPTION

If a malfunction occurs in the ABS, EBD, BA, VSC and/or TRC system, the VSC warning and SLIP indicator lights come on.

WIRING DIAGRAM

A0138I4E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC


    1. Turn the ignition switch to ON.

    2. Check if the DTC is recorded Click here.

      Result
      Result Proceed to
      DTC not output A
      DTC output B

    B

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    A

  2. CHECK VSC WARNING LIGHT


    1. Disconnect the skid control ECU connector.

    2. Turn the ignition switch to ON.

    3. Check that the VSC warning light.

      OK
      The VSC warning light goes out.

    NG

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER) Click here

    OK

  3. INSPECT SKID CONTROL ECU (IG1 TERMINAL)


    1. A0136MKE32

      Disconnect the skid control ECU connector.

    2. Turn the ignition switch to ON.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A41-28 (IG1) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT)

    OK

  4. INSPECT SKID CONTROL ECU (GND TERMINAL)


    1. A0136MKE30

      Turn the ignition switch to OFF.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A41-4 (GND1) - Body ground Always Below 1 Ω
      A41-1 (GND2) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)


    1. Turn the ignition switch to OFF.

    2. Disconnect the skid control ECU connector and the combination meter connector.

    3. A0137L3E02

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A41-22 (VSCW) - A22-11 (VSW) Always Below 1 Ω
      A41-22 (VSCW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here