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Home >> Toyota >> 2007 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (Brake Control System - Hybrid) >> Electronically Controlled Brake System >> TC and CG Terminal Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (See INITIALIZATION  ).
  1. INSPECT DLC3 (TC AND CG TERMINAL) 
    1. Turn the ignition switch on.
    2. Measure the voltage according to the value(s) in the table below.
      Fig 1: Identifying DLC3 Connector Terminals
      G05202778Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      D3-13 (TC) - Body ground Ignition switch on 10 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      D3-4 (CG) - Body ground Below 1 Ω

    NG: Go to step  3

    OK: Go to Next Step 

  2. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication DTC is output (See DIAGNOSIS SYSTEM ).

      Result 

      RESULT CHART

      Condition Proceed To
      DTC is not output A
      DTC is output B

      HINT:

      If troubleshooting has been carried out , refer back to the table and proceed to the next step before replacing the part PROBLEM SYMPTOMS TABLE .

    B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    A: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (DLC3 (TC) TO HV CONTROL ECU) 
    1. Disconnect the HV control ECU connector.
      Fig 2: Checking Harness And Connector (DLC3 (TC) To HV Control ECU)
      G05202779Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      D3-13 (TC) - H12-3 (TC) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      D3-13 (TC) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (DLC3 (CG) TO BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying DLC3 Connector Terminals
      G05202780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      D3-4 (CG) - Body ground Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  5. CHECK ECM (DLC3 (TC) INPUT) 
    1. Using the SST, connect terminals D3-13 (TC) and D3-4 (CG) of the DLC3.

      SST 09843-18040 

      Fig 4: Identifying DLC3 Connector Terminals
      G05202778Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the engine warning light is blinking.

      Result 

      RESULT CHART

      Condition Proceed To
      Engine warning light is blinking A
      Engine warning light is not blinking B

    B: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    A: Go to Next Step 

  6. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication DTC is output (See DIAGNOSIS SYSTEM ).

      Result 

      RESULT CHART

      Condition Proceed To
      DTC is not output A
      DTC is output B

      HINT:

      If troubleshooting has been carried out , refer and proceed to the next step before replacing the part PROBLEM SYMPTOMS TABLE .

    B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    A: REPLACE SKID CONTROL ECU 

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