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TC and CG Terminal Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (DLC3 - HYBRID VEHICLE CONTROL ECU AND BODY GROUND) 
    1. Disconnect the D72 ECU connector.
      Fig 1: Checking Harness And Connector (DLC3 - Hybrid Vehicle Control ECU And Body Ground)
      GTY303271Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.
      Fig 2: Measuring Resistance Of DLC3
      GTY168970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester Connection Condition Specified Condition
      D47-13 (TC) - D72-11 (TC) Always Below 1 Ω
      D47-13 (TC) or D72-11 (TC) - Body ground Always 10 kΩ or higher
      D47-4 (CG) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU 

    OK: Go to next step 

  2. INSPECT DLC3 (TC VOLTAGE) 
    1. Connect the D72 ECU connector.
      Fig 3: Measuring Voltage Of DLC3
      GTY168970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      D47-13 (TC) - D47-4 (CG) Ignition switch ON 11 to 14 V

    NG → REPLACE HYBRID VEHICLE CONTROL ECU 

    OK → See step   3 

  3. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE