VEHICLE STABILITY CONTROL SYSTEM VSC OFF Indicator Light Remains ON

DTC Code DTC Name
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 turns off, the VSC OFF indicator light comes on.

WIRING DIAGRAM

C323178E02

CAUTION / NOTICE / HINT

Note:

When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration (Click here).

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    Click here

    INSPECT CAN COMMUNICATION SYSTEM

    (Click here)

  2. CHECK IF BRAKE ACTUATOR ASSEMBLY CONNECTOR IS SECURELY CONNECTED

    Click here

    CONNECT CONNECTOR TO BRAKE ACTUATOR ASSEMBLY CORRECTLY

  3. READ VALUE USING GTS (TRC/VSC OFF MODE)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Select the Data List on the GTS (Click here).

      Table 1. ABS/VSC/TRC

      Tester Display

      Measurement Item/Range

      Normal Condition

      Diagnostic Note

      TRC/VSC Off Mode

      TRC/VSC off mode/ Normal, TRC OFF, Unknown or VSC OFF

      Normal: Normal mode

      TRC OFF: TRC off mode

      Unknown: Unspecified

      VSC OFF: VSC off mode

      -

    4. Check the indicator light and mode condition on the GTS changes according to VSC OFF switch operation.

      Standard

      Switch Operation

      Mode Condition Display

      Multi-information Display

      (TRC OFF Indicator)

      VSC OFF Indicator Light

      Not pressed

      Normal

      Not displayed

      Does not come on

      Pressing the VSC OFF switch

      TRC OFF

      Displayed

      Does not come on

      Pressing and holding the VSC OFF switch

      VSC OFF

      Displayed

      Comes on

      Result

      Result

      Proceed to

      Indicator light and mode condition display do not change.

      A

      Mode condition display is normal, but indicator light does not change.

      B

      Indicator light and mode condition display are normal.

      C

    INSPECT METER / GAUGE SYSTEM

    (Click here)

    USE SIMULATION METHOD TO CHECK

    (Click here)

  4. PERFORM ACTIVE TEST USING GTS (VSC OFF INDICATOR LIGHT)

    1. Select the Active Test on the GTS (Click here).

      Table 2. ABS/VSC/TRC

      Tester Display

      Test Part

      Control Range

      Diagnostic Note

      VSC OFF Indicator Light

      VSC OFF indicator light

      Indicator light ON/OFF

      Can be observed on the combination meter assembly

      Vehicle condition: Vehicle stopped

    2. Check the VSC OFF indicator light in the combination meter assembly turns on or off in accordance with GTS operation.

      OK

      The VSC OFF indicator light turns on or off in accordance with GTS operation.

    INSPECT COMBINATION METER ASSEMBLYClick here

  5. INSPECT VSC OFF SWITCH

    1. Remove the VSC OFF switch (Click here).

    2. Inspect the VSC OFF switch (Click here).

      OK

      The VSC OFF switch is normal.

    REPLACE VSC OFF SWITCH

    (Click here)

  6. CHECK HARNESS AND CONNECTOR (VSC OFF SWITCH - BRAKE ACTUATOR ASSEMBLY AND BODY GROUND)

    1. Disconnect the A78 (for CVT) or A79 (except CVT) skid control ECU (brake actuator assembly) connector.

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

      Standard Resistance (for CVT)

      Tester Connection

      Condition

      Specified Condition

      A78-9 (CSW) - H66-6 (+)

      Always

      Below 1 Ω

      A78-9 (CSW) or H66-6 (+) - Body ground

      Always

      10 kΩ or higher

      H66-3 (E) - Body ground

      Always

      Below 1 Ω

      Standard Resistance (except CVT)

      Tester Connection

      Condition

      Specified Condition

      A79-34 (CSW) - H66-6 (+)

      Always

      Below 1 Ω

      A79-34 (CSW) or H66-6 (+) - Body ground

      Always

      10 kΩ or higher

      H66-3 (E) - Body ground

      Always

      Below 1 Ω

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT COMBINATION METER ASSEMBLY

    1. Turn the ignition switch off.

    2. Perform an Active Test of the combination meter assembly using the GTS (Click here).

    3. Check the combination meter assembly.

      OK

      The VSC OFF indicator light turns on or off in accordance with GTS operation.

    REPLACE BRAKE ACTUATOR ASSEMBLY

    (Click here)

    INSPECT METER / GAUGE SYSTEM

    (Click here)