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Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BATTERY, BODY GROUND) 
    1. Disconnect the navigation receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      E1-7 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      STANDARD VOLTAGE REFERENCE CHART

      Tester Connection Condition Specified Condition
      E1-4 (B) - E1-7 (E) Always 11 to 14 V
      E1-3 (ACC) - E1-7 (E) Ignition switch ACC 11 to 14 V
      Fig 1: Identifying E1 Navigation Receiver Assembly Connector
      G06010780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )