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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 918 (Audio, Visual, Navigation System (BOSE Audio) (With Navigation)) >> DTC/Circuit Diagnosis >> DTC U1244: GPS Antenna >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. GPS ANTENNA CHECK 

    Inspect GPS antenna and antenna feeder for damage or poor connection.

    Is the GPS antenna and feeder clean and undamaged? 

    YES: GO TO 2.

    NO: Repair or replace malfunctioning parts.

  2. CHECK AV CONTROL UNIT VOLTAGE 
    1. Turn ignition switch ON.
    2. Check voltage between AV control unit connector M97 terminal 123 and ground.
      (+) (-) Voltage (approx.)
      Connector Terminal
      M97 123 Ground 5V
      Fig 1: Checking AV Control Unit Voltage
      G08691217Courtesy of NISSAN NORTH AMERICA, INC.

      Is the voltage reading as specified? 

      YES: Replace GPS antenna. Refer to "REMOVAL AND INSTALLATION ".

      NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".