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Home >> Infiniti >> 2011 >> M56 x >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Audio, Visual & Navigation System (BOSE Audio With Navigation)) >> DTC/Circuit Diagnosis >> DTC U1204: Av Control Unit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM THE SELF-DIAGNOSIS 
    1. Delete the "Self-Diagnosis Results" of "MULTI AV". Turn ignition switch OFF.
    2. Turn ignition switch ON. Perform the self-diagnosis again.
    3. Check that the DTC is detected again.

      Is any DTC detected? 

      YES: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

      NO: An intermittent error caused by strong radio interference may be detected unless any symptom (GPS reception error, etc.) occurs.