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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio, Visual & Navigation System (INFINITI INTOUCH) (Diagnostic Trouble Codes (DTCS) & Symptom Tests (Exc Hybrid) >> DTC/Circuit Diagnosis >> DTC U1258: Satellite Radio Antenna >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK SATELLITE RADIO ANTENNA HARNESS CONNECTOR

    1. Turn ignition switch OFF.
    2. Visually check satellite radio antenna and antenna feeder.

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair or replace malfunctioning parts.

  2. CHECK SATELLITE RADIO ANTENNA HARNESS CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect AV control unit harness connector.
    3. Check the continuity AV control unit harness connector and ground.
      Terminals Continuity
      (+) (-)
      AV control unit
      Connector Terminal
      M414 176 Ground Not existed

    Is the inspection result normal?

    YES 

    GO TO STEP 3  .

    NO 

    Repair or replace malfunctioning parts.

  3. CHECK AV CONTROL UNIT VOLTAGE

    1. Turn ignition switch ON.
    2. Check the voltage between AV control unit and ground.
      Terminals Voltage
      (Approx.)
      (+) (-)
      AV control unit
      Terminal
      176 Ground 5.0 V

    Is the inspection result normal?

    YES 

    Replace satellite radio antenna. Refer to REMOVAL AND INSTALLATION .

    NO 

    Replace AV control unit. Refer to REMOVAL AND INSTALLATION .