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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 594 (Telematics System (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> DTC U1A06: Tel Antenna >> Diagnosis Procedure >> Telematics System (DTC/Circuit Diagnosis)

Telematics System (DTC/Circuit Diagnosis)

WARNING: This page is about a different car, the 2020 Infiniti QX60. 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 connector M123.
    2. Turn ignition switch ON.
    3. Check the voltage between TCU connector M123 and ground.

      TCU

      Ground

      Voltage

      (Approx.)

      Connector

      Terminal

      M123

      47

      (--)

      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 .

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