VEHICLE STABILITY CONTROL SYSTEM VSC OFF Indicator Light Remains ON

DTC Code DTC Name
VSC OFF Indicator Light Remains ON

DESCRIPTION

Operation of the VSC OFF switch changes the vehicle between normal mode, TRC OFF mode and VSC OFF mode. During normal mode, pressing the VSC OFF switch for a short amount of time changes vehicle to TRC OFF mode. When the vehicle is stopped, pressing the VSC OFF switch for 3 seconds or more changes the vehicle to VSC OFF mode.

When the transfer is in L4, VSC is prohibited and the VSC OFF indicator and TRC OFF indicator turn on.

WIRING DIAGRAM

C220886E02

CAUTION / NOTICE / HINT

Note:

  • When replacing the master cylinder solenoid, perform calibration (Click here).

  • As there may be malfunctions in the transfer system related to when the transfer operates in L4, check the transfer system first (Click here).

PROCEDURE

  1. CHECK CAN COMMUNICATION LINE

    1. Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

    5. Select CAN Bus Check from the System Selection Menu screen and follow the prompts on the screen to inspect the CAN bus.

      Click here

      OK

      CAN Bus Check indicates no malfunctions in CAN communication.

      Result

      Result

      OK

      NG
    NG

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

    Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU CSW CIRCUIT)

    1. Disconnect the A7 skid control ECU connector.

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      A7-9 (CSW) - Body ground

      VSC OFF switch not pushed in

      10 kΩ or higher

      VSC OFF switch pushed in

      Below 1 Ω

      Result

      Result

      OK

      NG
    NG

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH)Click here

    OK

  3. CHECK TERMINAL VOLTAGE (EXI3)

    1. Disconnect the A7 skid control ECU connector.

    2. C214161C07

      *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

      Tester Connection

      Switch Condition

      Specified Condition

      A7-40 (EXI3) - Body ground

      Engine switch on (IG)

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU EXI3 CIRCUIT)Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (TRC/VSC OFF MODE)

    1. Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

      Chassis > ABS/VSC/TRC > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      TRC/VSC Off Mode

      TRC/VSC off mode

      Normal, TRC OFF or VSC OFF

      Normal: Normal mode

      TRC OFF: TRC OFF mode

      VSC OFF: VSC OFF mode

      -

    6. Check that the mode display changes according to VSC OFF switch operation.

      OK

      Display changes according to switch operation.

      Result

      Result

      OK

      NG
    OK

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

    Click here

    NG

    REPLACE MASTER CYLINDER SOLENOID

    Click here

  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU EXI3 CIRCUIT)

    1. Disconnect the A7 skid control ECU connector.

    2. Disconnect the G41 four wheel drive control ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A7-40 (EXI3) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK TERMINAL VOLTAGE (EXI3)

    1. Disconnect the A7 skid control ECU connector.

    2. C214161C07

      *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

      Tester Connection

      Switch Condition

      Specified Condition

      A7-40 (EXI3) - Body ground

      Engine switch on (IG)

      11 to 14 V

      Result

      Result

      OK

      NG
    OK

    REPLACE MASTER CYLINDER SOLENOID

    Click here

    NG

    REPLACE 4 WHEEL DRIVE CONTROL ECU

    Click here

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

    1. Disconnect the A7 skid control ECU connector.

    2. Disconnect the G5 VSC OFF switch connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A7-9 (CSW) - G5-9

      Always

      Below 1 Ω

      A7-9 (CSW) - Body ground

      Always

      10 kΩ or higher

      G5-6 - Body ground

      Always

      Below 1 Ω

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT VSC OFF SWITCH

    1. Remove the VSC OFF switch.

      Click here

    2. C220881C01

      *a

      Component without harness connected

      (VSC OFF Switch)

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      9 - 6

      Switch is not pushed

      10 kΩ or higher

      Switch is pushed

      Below 1 Ω

      Result

      Result

      OK

      NG
    OK

    REPLACE MASTER CYLINDER SOLENOID

    Click here

    NG

    REPLACE VSC OFF SWITCH

    Click here