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Navigation Receiver Assembly Power Source Circuit [08/2015 - 08/2017]: Procedure

  1. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BATTERY AND BODY GROUND) 
    1. Disconnect the navigation receiver assembly connectors.
      GTY609142Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I26-7 (GND1) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      I26-4 (+B1) - Body ground Always 11 to 14 V
      I26-3 (ACC1) - Body ground Ignition switch ACC 11 to 14 V
      I53-1 (IG) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Navigation Receiver Assembly)

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2017] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR