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Inspection Procedure

  1. CHECK WIRE HARNESS (TC of DLC3 - ECM) 
    1. Disconnect the A24 connector from the ECM.
      2. Fig 1: Disconnecting A24 Connector From ECM
      G05005557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      TC (A24-23) - TC (D20-13) Always Below 1 Ω

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

    OK: Go to Next Step 

  2. CHECK WIRE HARNESS (CG of DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      D20-4 (CG) - Body ground Always Below 1 Ω
    Fig 2: Identifying DLC3 Connector Terminals
    G05005629Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    OK: Go to Next Step 

  3. CHECK WIRE HARNESS (TC of DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      D20-13 (TC) - Body ground Always 10 kΩ or higher
    Fig 3: Identifying DLC3 Connector Terminals
    G05005630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE WIRE HARNESS OR ECU 

    OK: REPLACE ECM 

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