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Inspection Procedure

  1. CHECK WIRE HARNESS (COWL SIDE J/B RH - POWER SOURCE CONTROL ECU AND BODY GROUND) 
    1. Disconnect the DA and DD J/B connectors.
    2. Disconnect the K73 ECU connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      DD-6 - K73-34 (IG1D) Below 1 Ω
      DA-5 or DD-7 - Body ground Below 1 Ω
      DD-6 or K73-34 (IG1D) - Body ground 10 kΩ or higher
    Fig 1: Identifying DA And DD J/B Connectors And K73 ECU Connector
    G05287740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  2. CHECK COWL SIDE J/B RH (RH-IG1 RELAY) 
    1. Disconnect the DD and DM J/B connectors.
    2. Measure the resistance of the J/B connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      DM-1 - DD-14 When battery voltage is not applied to terminals DD-6 and DA-S or DD-7 10 kΩ or higher
      DM-1 - DD-14 When battery voltage is applied to terminals DD-6 and DA-5 or DD-7 Below 1 Ω
    Fig 2: Identifying DD And DM Cowl Side J/B Connectors
    G05287741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE COWL SIDE J/B RH 

    OK: REPLACE POWER SOURCE CONTROL ECU 

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