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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 (Remains On) >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the ABS & TRACTION actuator assy, perform zero point calibration (see CALIBRATION ).
  1. CHECK DTC 
    1. Is DTC output for ABS and VSC?

      Result: 

      CHECK DTC

      DTC is not output A
      DTC is output B
    1. B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 
    2. A: GO TO NEXT STEP. 
  2. INSPECT SKID CONTROL ECU CONNECTOR 
    1. Check the ECU connector's connecting condition.

    OK: The connector should be securely connected. 

    1. NG: CONNECT CONNECTOR TO ECU CORRECTLY 
    2. OK: GO TO NEXT STEP. 
  3. INSPECT BATTERY 
    1. Check the battery voltage.

      Standard: 

      Voltage: 11 to 14 V 

    1. NG: INSPECT CHARGING SYSTEM (SEE  ON-VEHICLE INSPECTION  ) 
    2. OK: GO TO NEXT STEP. 
  4. INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (IG1 TERMINAL) 

    WHEN USING HAND-HELD TESTER: 

    1. Connect the hand-held tester to the DLC3.
    2. Start the engine.
    3. Select the DATA LIST mode on the hand-held tester.
      DATA LIST

      Item Measurement Item / Range (Display) Normal Condition
      IG VOLTAGE ECU power supply voltage / TOO LOW / NORMAL / TOO HIGH TOO LOW: 9.5 V or less NORMAL: 9.5 to 14.0 V TOO HIGH: 14.0 V or more
    4. Check the voltage condition output from the ECU displayed on the hand-held tester.
    1. OK: "Normal" is displayed. 

    WHEN NOT USING HAND-HELD TESTER: 

    1. Disconnect the skid control ECU connector.
    2. Turn the ignition switch to the ON position.
    3. Measure the voltage according to the value (s) in the table below.

      Standard: 

      SKID CONTROL ECU TERMINAL VOLTAGE

      Tester Connection Condition Specified Condition
      S1-46(IG1)-Body ground IG switch ON 10 to 14 V
      Fig 1: Identifying Skid Control ECU Terminal
      G02599788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) 
    2. OK: GO TO NEXT STEP. 
  5. 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 TERMINAL 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
      G02599789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BODY GROUND) 
    1. Disconnect the skid control ECU connector.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SKID CONTROL ECU TERMINAL AND BODY GROUND RESISTANCE

      Tester Connection Specified Condition
      S1-32(GND1)- Body ground Below 1 Ω
      Fig 3: Identifying Skid Control ECU Terminal
      G02599790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  7. 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  ) 

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