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TC and CG Terminal Circuit: Wiring Diagram

Fig 1: Identifying TC And CG Terminal Wiring Diagram
G04025201Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve calibration (See CHECK FOR INTERMITTENT PROBLEMS  ).
  1. INSPECT DLC3 (TC AND CG TERMINAL) 
    1. Turn the engine switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.

      Voltage 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L29-13 (TC) - Body ground Engine switch on (IG) 10 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      L29-4 (CG) - Body ground Below 1 Ω

    NG : Go to step   3 

    Fig 2: Identifying DLC3 TC And CG Terminal
    G04025202Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : Go to Next Step 

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

      Result 

      DISPLAY (DTC OUTPUT) AND PROCEED TO REFERENCE CHART

      Display (DTC Output) Proceed To
      DTC is not output A
      DTC is output B

      HINT:

      If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE  .

    B : REPAIR CAN COMMUNICATION SYSTEM 

    A : GO TO NEXT STEP 

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

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      L29-13 (TC) - A40-3 (TC) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      L29-13 (TC) - Body ground 10 kΩ or higher

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 3: Identifying Harness And Connector DLC3 (TC) To ECM
    G04025203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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.

      Resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      L29-4 (CG) - Body ground Below 1 Ω

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 4: Identifying DLC3 Connector
    G04025204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : Go to Next Step 

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

      SST 09843-18040 

    2. Check if the engine warning light is blinking.

      Result 

      RESULT REFERENCE CHART

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

    B : REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM (TC) CIRCUIT) 

    Fig 5: Identifying Terminals TC And CG Of DLC3
    G04025205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A : GO TO NEXT STEP 

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

      Result 

      DISPLAY (DTC OUTPUT) AND PROCEED TO REFERENCE CHART

      Display (DTC Output) Proceed To
      DTC is not output A
      DTC is output B

      HINT:

      If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE  .

    B : REPAIR CAN COMMUNICATION SYSTEM 

    A : REPLACE SKID CONTROL ECU 

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