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Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY) 
    1. Disconnect the navigation ECU connector and multi-display connector.
      Fig 1: Identifying Navigation ECU & Multi-Display Connector Terminals
      G05270973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE TABLE

      Tester connection Condition Specified condition
      GVIF+ - GVI+ Always Below 1 Ω
      GVIF- - GVI- Always Below 1 Ω
      GVG - GND2 Always Below 1 Ω
      GVI+ - Body ground Always 10 kΩ or higher
      GVI- - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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