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Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT RADIO AND NAVIGATION ASSEMBLY 
    1. Disconnect the radio and navigation assembly connector R12.
    2. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester connection Condition Specified condition
      GND - Body ground Always Below 1
    3. Measure the voltage according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester connection Condition Specified condition
      B - GND Always 10 to 14 V
      ACC - GND Ignition SW ACC 10 to 14 V
      Fig 1: Disconnecting Radio & Navigation Assembly Connector R12
      G04337973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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