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Inspection Procedure

  1. INSPECT NAVIGATION ECU 
    1. Disconnect the navigation ECU connector N3.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TERMINALS RESISTANCE SPECIFICATION

      Tester connection Condition Specified Condition
      GND1 - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

    Voltage 

    TERMINALS VOLTAGE SPECIFICATION

    Tester connection Condition Specified Condition
    +B - GND1 Always 10 to 14 V
    ACC - GND1 Ignition SW ACC 10 to 14 V
    Fig 1: Disconnecting Navigation ECU Connector N3
    G04093068Courtesy 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 

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