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Inspection Procedure

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU-MULTI-DISPLAY) 
    1. Disconnect the network gateway ECU connector G3 and multi-display connector M5.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      NETWORK GATEWAY ECU CONNECTOR AND MULTI-DISPLAY CONNECTOR TERMINALS RESISTANCE

      Tester connection Condition Specified condition
      GTX+ - TX3+ Always Below 1 Ω
      GTX- - TX3- Always Below 1 Ω
      GTX+ - Body ground Always 10 kΩ or higher
      GTX- - Body ground Always 10 kΩ or higher
      Fig 1: Disconnecting Network Gateway ECU Connector G3
      G03009454Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Disconnecting Multi-Display Connector M5
      G03009455Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  DIAGNOSTIC TROUBLE CODE CHART  
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