Click here

ELECTRONICALLY CONTROLLED BRAKE SYSTEM VSC OFF Switch Circuit

Click here
Click here
DTC Code DTC Name
  VSC OFF Switch Circuit
Click here

DESCRIPTION

The skid control ECU assembly is connected to the combination meter assembly via CAN communication.

Pressing the VSC OFF switch (Satellite switch set) turns off TRC operation, and pressing and holding this switch turns off TRC and VSC operation. If TRC and VSC operations are turned off, the TRC OFF message will be displayed on the multi-information display and the VSC OFF indicator light will come on.

Click here

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note:

When replacing the skid control ECU assembly, perform initialization and calibration of the linear solenoid valve.

Click here

Click here

PROCEDURE


  1. Click here

    CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      Click here

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

  2. Click here

    CHECK IF SKID CONTROL ECU ASSEMBLY CONNECTOR IS SECURELY CONNECTED


    1. Check if the skid control ECU assembly connector is securely connected.

      OK
      The connector is securely connected.
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      CONNECT CONNECTOR TO SKID CONTROL ECU ASSEMBLY CORRECTLY

  3. Click here

    READ VALUE USING GTS (TRC/VSC OFF MODE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Select the Data List on the GTS.

      Click here


      1. 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

        		 -



      1. Chassis > ABS/VSC/TRC > Data List
        Tester Display
        TRC/VSC Off Mode




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

      OK
      Switch Operation Mode Condition Display Multi-information Display (TRC OFF Message) VSC OFF Indicator Light
      Not pressed Normal Not displayed Does not come on
      Pressing the VSC OFF switch (Satellite switch set) TRC OFF Displayed Does not come on
      Pressing and holding the VSC OFF switch (Satellite switch set) 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 is normal. C

  4. Click here

    PERFORM ACTIVE TEST USING GTS (MULTI-INFORMATION DISPLAY (TRC OFF MESSAGE) AND VSC OFF INDICATOR LIGHT)


    1. Select the Active Test on the GTS.

      Click here


      1. Chassis > ABS/VSC/TRC > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        TRC(TRAC) OFF Indicator Light Multi-information display (TRC OFF message) Display ON/OFF Observe combination meter assembly
        VSC OFF Indicator Light VSC OFF indicator light Indicator light ON/ OFF Observe combination meter assembly




      1. Chassis > ABS/VSC/TRC > Active Test
        Tester Display
        TRC(TRAC) OFF Indicator Light





      1. Chassis > ABS/VSC/TRC > Active Test
        Tester Display
        VSC OFF Indicator Light




    2. Check the multi-information display (TRC OFF message) and VSC OFF indicator light on the combination meter assembly turns ON or OFF in accordance with the GTS operation.

      OK
      The multi-information display (TRC OFF message) and VSC OFF indicator light turns ON or OFF in accordance with the GTS operation.
      Result
      Proceed to
      OK
      NG

  5. Click here

    INSPECT VSC OFF SWITCH (SATELLITE SWITCH SET)


    1. B004UE4C04
      *a

      Component without harness connected

      (VSC Off Switch (Satellite Switch Set))

      Turn the power switch off.

    2. Disconnect the G59 VSC OFF switch (Satellite switch set) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G59-2 (+) - G59-7 (E) Switch pushed Below 1 Ω
      G59-2 (+) - G59-7 (E) Switch not pushed 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

  6. Click here

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - VSC OFF SWITCH (SATELLITE SWITCH SET))


    1. Disconnect the A11 skid control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A11-19(CSW) - G59-2(+) Always Below 1 Ω
      A11-19 (CSW) or G59-2(+) - Body ground Always 10 kΩ or higher
      G59-7(E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE SKID CONTROL ECU ASSEMBLY for LHD:Click here

      REPLACE SKID CONTROL ECU ASSEMBLY for RHD:Click here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    INSPECT COMBINATION METER ASSEMBLY


    1. Turn the power switch off.

    2. Perform the Active Test of the combination meter assembly (meter CPU) using the GTS.

      Click here


      1. Body Electrical > Combination Meter > Active Test
        Tester Display
        Multi Display All (White)





      1. Body Electrical > Combination Meter > Active Test
        Tester Display
        VSC OFF Indicator




    3. Check the combination meter assembly.

      OK
      The multi-information display and VSC OFF indicator light turns on or off in accordance with the GTS operation.
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE SKID CONTROL ECU ASSEMBLY for LHD:Click here

      REPLACE SKID CONTROL ECU ASSEMBLY for RHD:Click here

    • NG

      INSPECT METER / GAUGE SYSTEMClick here