Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXINFORMATION & ENTERTAINMENT SYSTEMS DTCSACCESSORY PROTOCOL INTERFACE MODULE (APIM)
2009 Mercury Milan Premier, 3.0 1, AWD
Accessory Protocol Interface Module (APIM)
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Accessory Protocol Interface Module (APIM)
ACCESSORY PROTOCOL INTERFACE MODULE (APIM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| B1038 | Microphone Input Circuit Failure | Go to Pinpoint Test V . |
| B1117 | Audio Steering Wheel Button Stuck | Go to Pinpoint Test G . |
| B1136 | Audio Steering Wheel Switch #2 Circuit Failure | Go to Pinpoint Test G . |
| U0184 | Lost Communication With Radio (ACM) | Go to Pinpoint Test R . |
| U0196 | Lost Communication With Entertainment Control Module - Rear (AUX) | DISREGARD the DTC. CLEAR the DTCs. |
| U0249 | Lost Communication With Entertainment Control Module - Rear "B" (RCU) | DISREGARD the DTC. CLEAR the DTCs. |
| U0255 | Lost Communication With Front Controls Interface Module | DISREGARD the DTC. CLEAR the DTCs. |
| U0256 | Lost Communication With Front Display Interface Module | DISREGARD the DTC. CLEAR the DTCs. |
| U261C | USB #1 Device Error | Go to Pinpoint Test T . |
| U261D | USB #2 Device Error | DISREGARD the DTC. CLEAR the DTCs. |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.