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Multi-display Controller Power Source Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Multi-Display Controller Power Source Circuit Wiring Diagram
G04115593Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. INSPECT MULTI-DISPLAY CONTROLLER (+B1, ACC, GND, SELD, GAUX, NAVI) 
    1. Disconnect the connector from the multi-display controller.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE SPECIFIED CONDITION

      Tester connection Condition Specified condition
      GND - Body ground Always Below 1 Ω
      SELD - Body ground Always Below 1 Ω
      GAUX - Body ground Always Below 1 Ω
      NAVI - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Voltage 

      VOLTAGE SPECIFIED CONDITION

      Tester connection Condition Specified condition
      +B1 - GND Always 10 to 14 V
      ACC - GND Ignition SW ACC 10 to 14 V
      Fig 2: Identifying Connector From Multi-Display Controller
      G04115594Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL