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Home >> Toyota >> 2005 >> Camry Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics) >> Abs Warning Light Circuit (Remains On) >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the brake actuator assy, perform zero point calibration (see CALIBRATION  ).
  1. CHECK DTC (SEE  DTC CHECK/CLEAR   ) 
    NORMAL SYSTEM AND MALFUNCTION CODE

    A Normal System Code
    B Malfunction Code
    1. B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (SEE  DIAGNOSTIC TROUBLE CODE CHART   ) 

    A: Go to Next Step. 

  2. CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED 
    1. NG: CONNECT CONNECTOR TO ECU 

    OK: Go to Next Step. 

  3. 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 DATA LIST mode on the hand-held tester.
      DATA LIST

      Item Measurement Item / Range (Display) Normal Condition
      IG VOLTAGE ECU power supply voltage / UNDER / NORMAL / OVER TOO HIGH: NORMAL: 9.5 V or over TOO LOW: Below 9.5 V
    4. Read the voltage condition output from the ECU displayed on the hand-held tester.

      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: 

      TESTER CONNECTION SPECIFIED CONDITION (1 OF 2)

      Tester Connection Specified Condition
      S1-46 (IG1) - S1-1 (GND2) 10 to 14 V
      S1-46 (IG1) - S1-32 (GND1) 10 to 14 V
      Fig 1: Inspecting Skid Control ECU Terminal Voltage (IG1 Terminal)
      G02633712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go to step   5 

    NG: Go to Next Step. 

  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BODY GROUND) 
    1. Disconnect the skid control ECU connector S1.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (2 OF 2)

      Tester Connection Specified Condition
      S1-1 (GND2) - Body ground Below 1 Ω
      S1-32 (GND1) - Body ground Below 1 Ω
      Fig 2: Checking Harness And Connector (Skid Control ECU - Body Ground)
      G02633713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) 

  5. INSPECT HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER) 
    1. Check the harness and connector between the skid control ECU and combination meter.
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step. 

  6. CHECK COMBINATION METER ASSY 
    1. Check the combination meter assy (see COMBINATION METER ).
    1. NG: REPAIR OR REPLACE COMBINATION METER ASSY (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 

    OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

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