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Inspection Procedure

NOTE: When replacing the absorber control ECU, check the acceleration sensor assembly signal after replacement (See TEST MODE PROCEDURE ).

HINT:

Check the condition of each related circuit connector before troubleshooting (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

  1. INSPECT TERMINAL VOLTAGE (DLC3 TC TERMINAL VOLTAGE) 
    1. Turn the engine switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.

      Voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      K16-13 (TC) - K16-4 (CG) Engine switch on (IG) 10 to 14 V
    3. Turn the engine switch off.
    4. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Specified Condition
      K16-4 (CG) - Body ground Below 1 Ω
    Fig 1: Identifying DLC3 Connector
    G05296408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: Go to  step  4

    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 table below.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Specified Condition
      A7-3 (TC) - K16-13 (TC) Below 1 Ω
      K16-13 (TC) - Body ground 10 kΩ or higher
    Fig 2: Identifying K16 And ECM A7 Connector Terminal
    G05296409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC TERMINAL CIRCUIT) 

    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 REFERENCE

    Result Proceed to
    DTC is not output A
    DTC is not output (when troubleshooting accordance with the PROBLEM SYMPTOMS TABLE) B
    DTC is output C

    B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

    C: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    A: REPLACE ABSORBER CONTROL ECU 

  4. CHECK HARNESS AND CONNECTOR (ECM TO DLC3) 
    1. Disconnect the ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Specified Condition
      A7-3 (TC) - K16-13 (TC) Below 1 Ω
      K16-13 (TC) - Body ground 10 kΩ or higher
    Fig 3: Identifying DLC3 And CG Connector Terminal
    G05296409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC TERMINAL CIRCUIT) 

    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.

      Resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Specified Condition
      K16-4 (CG) - Body ground Below 1 Ω
    Fig 4: Identifying DLC3 Connector Terminal
    G05296411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

    OK: Go to next step 

  6. CHECK ECM (DLC3 TC TERMINAL INPUT) 
    1. Using the SST, connect the terminals TC and CG of the DCL3.

      SST 09843-18040 

    2. Check that the engine, ABS, and VSC warning lights are blinking.

      Result 

      RESULT REFERENCE

      Result Proceed to
      Warning lights are blinking A
      Warning lights are not blinking B
    Fig 5: Identifying DLC3 Connector
    G05296408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B: REPLACE ECM 

    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 REFERENCE

    Result Proceed to
    DTC is not output A
    DTC is not output (when troubleshooting accordance with the PROBLEM SYMPTOMS TABLE) B
    DTC is output C

    B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

    C: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    A: REPLACE ABSORBER CONTROL ECU 

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