Is the concern still present?

E14 CHECK FOR CORRECT DACMC (DIGITAL AUDIO CONTROL MODULE C) OPERATION

Ignition OFF. Disconnect and inspect all the ACM connectors. Repair:

Corrosion (clean module pins or install new connectors or terminals) Damaged or bent pins (install new terminals or pins) Pushed-out pins (install new pins as necessary)

Reconnect the ACM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present.

Is the concern still present?

Poor Sound Quality Or Distorted Sound From One Or More Speakers (Not All Speakers)

Normal Operation and Fault Conditions

The ACM sends audio signals to the speakers in the form of AC voltage, resulting in clear audio output.

Possible Sources

Loose component fasteners Loose door handle, lock, and other trim panel components and fasteners Loose items in storage areas Loose speaker grilles Loose wire harnesses or wire harness fasteners Speaker(s) Water shield bonding and placement

Visual Inspection and Diagnostic Pre-checks

Visually inspect around the suspect area for any possible rattle conditions such as:

Any storage compartments including cup holders (if equipped) Door map pockets for contents that can rattle (if equipped) Door pull cup attachments (if equipped) Door switch bezels (if equipped) Package tray (if equipped) Speaker grilles Trim panels and fasteners

PINPOINT TEST F : POOR SOUND QUALITY OR DISTORTED SOUND FROM ONE OR MORE

SPEAKERS (NOT ALL SPEAKERS)

F1 ISOLATE THE ZONE

Operate the audio system using digital media such as a CD or MP3. Using the audio system fade and balance feature, adjust the audio sound to each of the four zones (LHF, RHF, LHR, and RHR) of the vehicle to isolate the poor sound quality. Locate and apply pressure to the trim panel(s) around the poor sound quality area in question.