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Home >> Lexus >> 2009 >> IS F >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation (Diagnostic Codes & Circuit Tests) >> Navigation System >> Display Signal Circuit between Navigation ECU and Multi-display >> Procedure

Display Signal Circuit between Navigation ECU and Multi-display: Procedure

  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - MULTI-DISPLAY) 
    1. Disconnect the navigation ECU connector and multi-display connector.
      Fig 1: Identifying Terminals Of Navigation ECU Connector
      GTY143817Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.
      Fig 2: Identifying Terminals Of Multi-Display Connector
      GTY154136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      q2-1 (GVO+) - q1-1 (GVI+) Always Below 1 Ω
      q2-2 (GVO-) - q1-2 (GVI-) Always Below 1 Ω
      q2-3 (GVG2) - q1-3 (GVG1) Always Below 1 Ω
      q2-1 (GVO+) - Body ground Always 10 kΩ or higher
      q2-2 (GVO-) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE