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Home >> Infiniti >> 2010 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (Audio Visual System & Navigation System) >> BOSE Audio With Navigation >> Component Diagnosis >> DTC U121F: Av Control Unit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2010 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT

    Check audio control unit power supply and ground circuit. Refer to "AV CONTROL UNIT : DIAGNOSIS PROCEDURE ".

    Is inspection result OK? 

    YES: Inspection End.

    NO: Repair malfunctioning parts.