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Home >> Infiniti >> 2011 >> M56 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Audio, Visual & Navigation System (BOSE Audio With Navigation)) >> DTC/Circuit Diagnosis >> DTC U1263: USB >> Diagnosis Procedure

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. CHECK USB HARNESS 

    Visually check USB harness.

    Is the inspection result normal? 

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

    NO: Replace USB harness. Refer to "REMOVAL AND INSTALLATION ".

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