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Home >> Toyota >> 2005 >> Avalon XLS >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics) >> TC And Cg Terminal Circuit >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the ABS & TRACTION actuator assy, perform zero point calibration (see CALIBRATION  ).
  1. INSPECT DLC3 TERMINAL VOLTAGE (TC TERMINAL VOLTAGE) 
    1. Turn the ignition switch on (IG). 
    2. Measure the voltage according to the value(s) in the table below.
      Fig 1: Identifying Connector Terminals TC & CG Of DLC3
      G02976639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION - VOLTAGE

      Tester Connection Condition Specified Condition
      D20-13 (TC) - Body ground Ignition switch on (IG) 10 to 14 V
    3. Measure the resistance according to the value(s) in the table below. (See Fig 1)

    Standard: 

    TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

    Tester Connection Specified Condition
    D20-4 (CG) - Body ground Below 1 Ω
    1. NG: Go to step   4 . 
    2. OK: Go to next step. 
  2. CHECK HARNESS AND CONNECTOR (ECM TO DLC3) 
    1. Disconnect the ECM connector.
    2. Measure the resistance according to the value(s) in the following 2 tables.
      Fig 2: Identifying Connector Terminal Of DLC3 & ECM
      G02976640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

      Tester Connection Specified Condition
      A24-23 (TC) - D20-13 (TC) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

    Standard: 

    TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

    Tester Connection Specified Condition
    D20-13 (TC) - Body ground 10 kΩ or higher
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC TERMINAL CIRCUIT) 
    2. OK: Go to next step. 
  3. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (see DTC CHECK/CLEAR  ).

    Result: 

    RESULT

    DTC is not output A
    DTC is output B
    1. B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    2. A: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE  REPLACEMENT  ) 

    HINT:

    If troubleshooting has been carried out according to the problem symptoms table, refer back to the table and proceed to the next step before replacing the part (see PROBLEM SYMPTOMS TABLE  ).

  4. CHECK HARNESS AND CONNECTOR (ECM TO DLC3) 
    1. Disconnect the ECM connector.
    2. Measure the resistance according to the value(s) in the following 2 tables.
      Fig 3: Identifying Connector Terminal TC Of DLC3 & ECM
      G02976641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

      Tester Connection Specified Condition
      A24-23 (TC) - D20-13 (TC) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

    Standard: 

    TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

    Tester Connection Specified Condition
    D20-13 (TC) - Body ground 10 kΩ or higher
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC CIRCUIT) 
    2. OK: Go to next step. 
  5. CHECK HARNESS AND CONNECTOR (DLC3 TO BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

    Standard: 

    TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

    Tester Connection Specified Condition
    D20-4 (CG) - Body ground Below 1 Ω
    Fig 4: Identifying Connector Terminal CG Of DLC3
    G02976642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 
    2. OK: Go to next step. 
  6. CHECK ECM (DLC3 (TC) INPUT) 
    1. Using SST, connect the terminals TC and CG of the DLC3.

      SST 09843-18040

      Fig 5: Identifying Connector Terminals TC & CG Of DLC3
      G02976643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the engine warning light is blinking.

    Result: 

    RESULT

    Engine warning light is blinking A
    Engine warning light is not blinking B
    1. B: REPLACE ECM (SEE  REPLACEMENT  ) 
    2. A: Go to next step. 
  7. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (see DTC CHECK/CLEAR  ).

    Result: 

    RESULT

    DTC is not output A
    DTC is output B
    1. B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
    2. A: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE  REPLACEMENT  ) 

    HINT:

    If troubleshooting has been carried out according to the problem symptoms table, refer back to the table and proceed to the next step before replacing the part (see PROBLEM SYMPTOMS TABLE  ).

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