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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (Entertainment System - General Information -- F250-F550 Super Duty) >> Diagnosis And Testing >> Audio System >> Pinpoint Tests >> Pinpoint Test E: Poor Quality/Distorted Sound/No Sound From All Speakers

Pinpoint Test E: Poor Quality/Distorted Sound/No Sound From All Speakers

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. E1 CHECK FOR CORRECT AUDIO UNIT OPERATION 
    • Key in ON position.
    • Turn the audio unit on.
    • Does the audio unit display illuminate? 
  2. E2 CHECK THE SPEAKER OPERATION 
    • Carry out the speaker walk-around test.
    • Do all speakers have poor quality/distorted sound/no sound? 
    • Yes  : REMOVE the audio unit. REFER to AUDIO UNIT . SEND the audio unit to an authorized repair facility. TEST the system for normal operation after the repair.
    • No  : GO to PINPOINT TEST D .