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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 (MULTI-DISPLAY - NAVIGATION ECU) 
    1. Disconnect the multi-display connector M4 and navigation ECU connector N6.
    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
      MCO+ - MIC+ Always Below 1 Ω
      MCO- - MIC- Always Below 1 Ω
      MCO+ - Body ground Always 10 kΩ or higher
      MCO- - Body ground Always 10 kΩ or higher
      Fig 1: Identifying Multi-Display & Navigation ECU Connector Terminals
      G05270990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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