Are the resistances less than 3 ohms?
Yes | GO to L4 |
|---|---|
No | REPAIR the circuit in question. |
L4 CHECK FOR CORRECT FCDIM (FRONT CONTROL/DISPLAY INTERFACE MODULE) OPERATION
Ignition OFF. Disconnect and inspect the FCDIM connector and related in-line connectors. Repair:
corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary
Reconnect the FCDIM connector and related in-line connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present.
Is the concern still present?
Yes | CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new FCDIM. REFER to: Front Control/Display Interface Module (FCDIM) (415-00 Information and Entertainment System - General Information - Vehicles With: Touchscreen Display) . |
|---|---|
No | The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. |
The Audio Control Module (ACM) Does Not Respond To The Diagnostic Scan Tool
Refer to Wiring Diagrams Cell 14 for schematic and connector information.
Refer to Wiring Diagrams Cell 130 for schematic and connector information.
Refer to Wiring Diagrams Cell 131 for schematic and connector information.
Refer to Wiring Diagrams Cell 132 for schematic and connector information.
Refer to Wiring Diagrams Cell 133 for schematic and connector information.
Normal Operation and Fault Conditions
The ACM communicates on the HS-CAN3, and communicates with the diagnostic scan tool through the HS-CAN2. Diagnostic messages are sent/received 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.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.