Pinpoint Test O : The Audio Control Module (ACM) Does Not Respond To The Diagnostic Scan Tool: Notes
WARNING: This page is about a different variant/trim than selected.
Refer to Module Communications Network for schematic and connector information.
Refer to Audio System/Navigation - Fusion Without Touchscreen for schematic and connector information.
Normal Operation and Fault Conditions
The ACM communicates on the HS-CAN3. Diagnostic messages are sent/received between the DLC and the diagnostic scan tool through the HS-CAN2 circuits at the DLC, and translated through the GWM to the HS-CAN3.
Possible Sources
- Fuse
- Wiring, terminals and connector
- ACM
Visual Inspection and Diagnostic Pre-checks
Verify BCM fuse 33 (20A) is OK.