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.
2011 Ford Transit Connect Van CargoFACTORY OEM SERVICE PROCEDURE
Audio Control Module (ACM)
AUDIO CONTROL MODULE (ACM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1342 | ECU is Faulted |
NOTE:
Repair all other DTCs first before diagnosing DTC B1342. CLEAR the DTCs. REPEAT the self-test. If only DTC B1342 is retrieved again, INSTALL a new Audio Control Module (ACM). REFER to AUDIO CONTROL MODULE (ACM) in this service information. TEST the system for normal operation. |
| B2404 | Audio Steering Wheel Switch Circuit Fault | Go to PINPOINT TEST D . |
| B2405 | Audio Disc CD Player Thermal Shutdown Fault | The ACM was over-temperature. This may occur during extended use. Audio operation can resume after the ACM cools. CLEAR the DTCs. This is normal operation. |
| B2406 | Audio Disc CD Player Internal Fault |
NOTE:
DTC B1342 may also be set. CLEAR the DTCs. REPEAT the self-test. If DTC B2406 is retrieved again, INSTALL a new ACM . REFER to AUDIO CONTROL MODULE (ACM) in this service information. TEST the system for normal operation. |
| B2408 | Speaker Line Short to Ground | Go to PINPOINT TEST B . |
| B2477 | Module Configuration Failure | REFER to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article. |
| U0140 | Lost Communication With Body Control Module (GEM ) | Go to PINPOINT TEST G . |
| U0155 | Lost Communication With Instrument Panel Cluster (IC ) Control Module | Go to PINPOINT TEST H . |
| U0238 | Lost Communication With Digital Audio Control Module "D" (DSP ) |
NOTE:
Despite the description, this DTC pertains to the Speech Recognition Module (SRM), not the audio Digital Signal Processing (DSP) module, which is not applicable to this vehicle. Go to PINPOINT TEST I . |
| U2050 | No Application Present | REFER to MODULE COMMUNICATIONS NETWORK - MODULE CONFIGURATION article. |
Factory Service Tools
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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.
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