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Home >> Toyota >> 2005 >> Corolla LE, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics) >> VSC Warning Light Circuit (Does Not Light Up) >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the ABS & TRACTION actuator assy, perform zero point calibration (see CALIBRATION ).
  1. CHECK VSC WARNING LIGHT 

    WHEN USING HAND-HELD TESTER: 

    1. Connect the hand-held tester to the DLC3 and start the engine.
    2. Select the "VSC WARN LIGHT" in the ACTIVE TEST and operate the VSC warning light on the hand-held tester.
      ACTIVE TEST

      Item Vehicle Condition / Test Details Diagnostic Note
      VSC WARN LIGHT Turns VSC warning light ON / OFF Observe combination meter
    3. Check that "ON" and "OFF" of the VSC warning light are indicated on the combination meter when using the hand-held tester.

    OK: The VSC warning light turns on or off in accordance with the hand-held tester. 

    WHEN NOT USING HAND-HELD TESTER: 

    1. Turn the ignition switch off and disconnect the connector from the skid control ECU.
    2. Ground terminal VSCW of the skid control ECU.
    3. Turn the ignition switch to the ON position.
    4. Check the VSC warning light.

    OK: 

    VSCW-GND CONDITION AND ILLUMINATION CONDITION

    VSCW-GND Condition Illumination Condition
    Connected ON
    Disconnected OFF
    Fig 1: Identifying Skid Control ECU Connector Terminal
    G02599791Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step 2 
    2. OK: GO TO NEXT STEP. 

      REPLACE ABS & TRACTION ACTUATOR ASSY (SEE  REPLACEMENT  ) 

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER) 
    1. Disconnect the skid control ECU connector and combination meter connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SKID CONTROL ECU AND COMBINATION METER TERMINALS RESISTANCE

      Tester Connection Specified Condition
      C16-3-S1-36(VSCW) Below 1 Ω
    3. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SKID CONTROL ECU TERMINALS AND BODY GROUND RESISTANCE

      Tester Connection Specified Condition
      S1-36 (VSCW) - Body ground 10 kΩ or higher
      Fig 2: Identifying Skid Control ECU And Combination Meter Terminals
      G02599792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  3. INSPECT COMBINATION METER ASSY 
    1. Check combination meter assy (see COMBINATION METER ).
    1. NG: CHECK COMBINATION METER ASSY (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    2. OK: GO TO NEXT STEP. 

      REPLACE ABS & TRACTION ACTUATOR ASSY (SEE  REPLACEMENT  )