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Home >> Infiniti >> 2010 >> EX35 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Audio, Visual & Navigation System - BOSE Audio With Navigation - DTC/Circuit Diagnosis) >> Component Diagnosis >> DTC U121F: Av Control Unit >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti EX35. 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 AV control unit power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE  .

    Is inspection result normal? 

    YES: INSPECTION END

    NO: Repair malfunctioning parts.