General Audio System: Notes

SYMPTOM CHART - GENERAL AUDIO SYSTEM

Condition	Possible Sources	Action
No communication with the Audio Control Module (ACM)	Fuse Wiring, terminals or connectors ACM	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the Accessory Protocol Interface Module (APIM)	Fuse Wiring, terminals or connectors APIM	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the Front Controls Interface Module (FCIM)	Fuse Wiring, terminals or connectors FCIM	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the Front Display Interface Module (FDIM)	Fuse Wiring, terminals or connectors FDIM	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the Global Positioning System Module (GPSM)	Fuse Wiring, terminals or connectors GPSM	REFER to MODULE COMMUNICATIONS NETWORK article.
The CD player is inoperative/does not operate correctly	CD ACM	INSPECT the CD for scratches, fingerprints, a loose paper label, incorrect format, or damage. INSERT a known good CD and TEST the system. If the system operates correctly, the concern was caused by a damaged CD. If the system does not operate correctly, INSTALL a new ACM . REFER to AUDIO CONTROL MODULE (ACM) in this service information. TEST the system for normal operation.
The Front Controls Interface Module (FCIM) illumination is inoperative	Backlighting system concern FCIM	REFER to INSTRUMENT CLUSTER ILLUMINATION & INSTRUMENT PANEL ILLUMINATION article.
The audio system does not operate correctly from the Front Controls Interface Module (FCIM)	Communication network concern FCIM	GO to PINPOINT TEST I .
An individual Front Display Interface Module (FDIM) display is inoperative - vehicles without navigation	Communication network concern FDIM	GO to PINPOINT TEST J .
An individual Front Display Interface Module (FDIM) display is inoperative - vehicles with navigation	Communication network concern FDIM ACM	GO to PINPOINT TEST K .
The audio system does not operate correctly from the Front Display Interface Module (FDIM) - vehicles with navigation	Wiring, terminals or connectors FDIM ACM	GO to PINPOINT TEST L .
The Front Display Interface Module (FDIM) is completely inoperative - vehicles without navigation	Communication network concern FDIM	GO to PINPOINT TEST M .
The Front Display Interface Module (FDIM) is completely inoperative - vehicles with navigation	Fuse Wiring, terminals or connectors FDIM ACM	GO to PINPOINT TEST N .
The Front Display Interface Module (FDIM) illumination is inoperative - vehicles with navigation	Wiring, terminals or connectors FDIM ACM	GO to PINPOINT TEST N .
The Front Display Interface Module (FDIM) does not display DVD video played from the Audio Control Module (ACM) - vehicles with navigation	Wiring, terminals or connectors FDIM ACM	GO to PINPOINT TEST O .
Loud popping sound when cycling the ignition	Fuse Wiring, terminals or connectors ACM	GO to PINPOINT TEST R .
The steering wheel controls are inoperative/do not operate correctly	Wiring, terminals or connectors Clockspring Steering wheel controls ACM APIM (without navigation only)	GO to PINPOINT TEST P .
The audio input jack is inoperative/does not operate correctly	Wiring, terminals or connectors Audio input jack APIM (vehicles with the SYNC system) ACM (vehicles without the SYNC system)	GO to PINPOINT TEST Q .
The speed sensitive volume does not operate correctly	Speed sensitive volume setting Vehicle Speed Sensor (VSS) signal concern Communication network concern ACM	GO to PINPOINT TEST S .
Voice recognition is inoperative/does not operate correctly	Wiring, terminals or connectors Microphone (part of auto-dimming interior mirror) Steering wheel controls ACM (if equipped with navigation) APIM (if equipped)	GO to PINPOINT TEST T .