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Inspection Procedure

  1. CHECK WIRE HARNESS (INSTRUMENT CLUSTER FINISH PANEL CENTER - NAVIGATION ECU) 
    1. Disconnect the M6 panel connector.
      Fig 1: Identifying M6 Panel Connector Terminals
      G05293347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the N7 ECU connector.
    3. Measure the resistance of the wire harness connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      M6-18 (MCO-) - N7-5 (MIC-) Below 1 Ω
      M6-17 (MCO+) - N7-3 (MIC+) Below 1 Ω
      M6-18 (MCO-) - Body ground 10 kΩ or higher
      M6-17 (MCO+) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  2. INSPECT INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CENTER 
    1. Remove the instrument cluster finish panel center.
      Fig 2: Identifying Instrument Cluster Finish Panel Center Connector Terminals
      G05293348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance of the panel.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      M6-18 (MCO-) - B-19 (MCO-) Below 1 Ω
      M6-17 (MCO+) - B-18 (MCO-) Below 1 Ω
      M6-16 (SGND) - 8-17 (SGND) Below 1 Ω
      M6-18 (MCO-) - Body ground 10 kΩ or higher
      M6-17 (MCO+) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CENTER 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE