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TC and CG Terminal Circuit: Wiring Diagram

Fig 1: TC And CG Terminal Circuit - Wiring Diagram
G04025044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (See CHECK FOR INTERMITTENT PROBLEMS  ).
  1. INSPECT DLC3 TERMINAL VOLTAGE (TC TERMINAL VOLTAGE) 
    1. Turn the engine switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.

      Voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      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 SPECIFIED CONDITION

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

      NG : Go to step   4 

      Fig 2: Identifying DLC3 Connector
      G04025045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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 

      TESTER CONNECTION SPECIFIED CONDITION

      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 SPECIFIED CONDITION

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

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

      Fig 3: Identifying ECM Connector
      G04025046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK : Go to next step 

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

      Result 

      RESULT REFERENCE

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

      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  ).

      B : REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

      A : REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

  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 

      TESTER CONNECTION SPECIFIED CONDITION

      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 SPECIFIED CONDITION

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

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

      Fig 4: Identifying ECM Connector
      G04025047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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 

      TESTER CONNECTION SPECIFIED CONDITION

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

      NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

      Fig 5: Identifying DLC3 Connector
      G04025048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK : Go to next step 

  6. CHECK ECM (DLC3 TC INPUT) 
    1. Using the SST, connect terminals TC and CG of the DLC3.
    2. Check that the engine warning light is blinking.

      Result 

      RESULT REFERENCE

      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 6: Identifying DLC3 Connector
      G04025049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      A : GO TO NEXT STEP 

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

      Result 

      RESULT REFERENCE

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

      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  ).

      B : REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

      A : REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

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