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TC and CG Terminal Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - ECM) 
    Fig 1: Identifying Terminals Of A6 Connector
    GTY154010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A6 connector from the ECM.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A6-21 (TC) - J21-13 (TC) Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM) 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (TERMINAL CG of DLC3 - BODY GROUND) 
    Fig 2: Identifying DLC3 Connector Terminals
    GTY128503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J21-4 (CG) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND) 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - BODY GROUND) 
    Fig 3: Identifying DLC3 Connector Terminals
    GTY150181Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J21-13 (TC) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU 

    OK → See step   4 

  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
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