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TC and CG Terminal Circuit: Procedure

  1. CHECK CAN COMMUNICATION SYSTEM See step   1 

    B → See step   7 

    A: Go to next step 

  2. INSPECT DLC3 
    1. Measure the voltage according to the value(s) in the table below.
      Fig 1: Identifying 13 (TC) And 4 (CG) Of DLC3 Connector Terminals
      GTY211516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C13-13 (TC) - C13-4 (CG) Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of DLC3

    NG → See step   4 

    OK: Go to next step 

  3. INSPECT ECM (DLC3 INPUT) 
    • SST: 09843-18040 
    1. Turn the ignition switch off.
    2. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
      Fig 2: Identifying 13 (TC) And 4 (CG) Of DLC3 Connector Terminals
      GTY211516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of DLC3
    3. Turn the ignition switch to ON.
    4. Check that the MIL is blinking.
      RESULT

      Result Proceed to
      MIL is blinking A
      MIL is not blinking B

      HINT: 

      Refer to the ECM installation procedure. Refer to REMOVAL .

    B → REPAIR OR REPLACE WIRE HARNESS OR ECM 

    A → See step   8 

  4. CHECK HARNESS AND CONNECTOR (DLC3 - ECM) 
    1. Disconnect the A35 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C13-13 (TC) - A35-7 (TC) Always Below 1 Ω
      C13-13 (TC) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C13-4 (CG) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. INSPECT ECM (DLC3 INPUT) 
    • SST: 09843-18040 
    1. Turn the ignition switch off.
    2. Connect the A35 ECM connector.
    3. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
      Fig 3: Identifying 13 (TC) And 4 (CG) Of DLC3 Connector Terminals
      GTY211516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Front view of DLC3
    4. Turn the ignition switch to ON.
    5. Check that the MIL is blinking.
      RESULT

      Result Proceed to
      MIL is blinking A
      MIL is not blinking B

    B → REPAIR OR REPLACE WIRE HARNESS OR ECM 

    A → See step   8 

  7. GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  8. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL 
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