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Home >> Infiniti >> 2010 >> M35 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Audio, Visual & Navigation System) >> With Mobile Entertainment System >> 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 M45 and 2008 Infiniti M35. 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 the inspection result normal? 

    Yes: INSPECTION END

    No: Repair or replace malfunctioning parts.

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