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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Telematics System) >> Telematics System >> DTC/Circuit Diagnosis >> U1A09 GPS Antenna >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK TELEMATICS ANTENNA 

    Visually check telematics antenna and antenna feeder. Refer to Removal and Installation .

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Repair malfunctioning parts.

  2. CHECK TCU VOLTAGE 
    1. Disconnect TCU harness connector M195.
    2. Turn ignition switch ON.
    3. Check voltage between TCU connector M195 and ground.

      TCU

      Ground

      Voltage

      (Approx.)

      Connector

      Terminals

      M195

      49

      2.8 V

    Is the check result normal?

    YES

    Replace telematics antenna. Refer to Removal and Installation .

    NO

    Replace TCU. Refer to Removal and Installation .