Pinpoint Test T : The Digital Audio Control Module C (DACMC) Does Not Respond To The Diagnostic Scan Tool: Notes

WARNING: This page is about a different car, the 2015 Lincoln MKZ. However, it is still accessible from the selected car via links, so may be relevant.

Refer to Power Distribution/SJB for schematic and connector information.

Refer to Audio System/Navigation - Without Touchscreen for schematic and connector information.

Normal Operation and Fault Conditions

For all vehicles EXCEPT China THX ® audio, the DACMC is integral to the ACM.

For China THX ® audio only, the DACMC 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 are translated through the GWM to the HS-CAN3.

Possible Sources

Fuse
Wiring, terminals and connector
DACMC

Visual Inspection and Diagnostic Pre-checks

Verify BCM fuse 33 (20A) is OK.