adsm08
Senior Master Grease Monkey
Supporting Member
Article Contributor
Ford Technician
TRS 20th Anniversary
- Joined
- Sep 20, 2009
- Messages
- 34,623
- Reaction score
- 3,613
- Points
- 113
- Location
- Dillsburg PA
- Vehicle Year
- 1987
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Tire Size
- 31X10.50X15
If the display is still working, I’d say it’s an issue in the APIM. Take it to the dealer and have them check it out. Let us know what they find.
APIM is not suspect if the system turns on and registers that it is on but you get no sound. APIM is the Accessory Protocol Interface Module. It mostly handles connections from Bluetooth devices and the aux, RCA and SD inputs. If only those were affected but the CD player and radio worked normally APIM would be a prime suspect, although they are not nearly as problematic as they were at the beginning.
The ACM (Audio Control Module, basically the radio head unit) is responsible for all audio outputs, including the door chimes. I have seen a few bad on vehicles still under warranty this year alone.
As was said, this truck is still under warranty. Even if the issue is sporadic yet call them up and let them know you are having issues. Let them know you understand that there isn't much they can do if the issue isn't happening when they look at it, but it still helps to let them know something is going on. Depending on the size of the dealership they may tell you to just swing in and have them look without an appointment if it happens to act up while you are out driving.