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 Explorer Limited, AWDFACTORY OEM SERVICE PROCEDURE
Audio Control Module (ACM)
AUDIO CONTROL MODULE (ACM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1A01:01 | Speaker #1: General Electrical Failure | REFER to DIAGNOSTIC ROUTINE Z . |
| B1A01:11 | Speaker #1: Circuit Short To Ground | REFER to DIAGNOSTIC ROUTINE Z . |
| B1A01:12 | Speaker #1: Circuit Short To Battery | REFER to DIAGNOSTIC ROUTINE Z . |
| B1A01:13 | Speaker #1: Circuit Open | REFER to DIAGNOSTIC ROUTINE Z . |
| B1A02:01 | Speaker #2: General Electrical Failure | REFER to DIAGNOSTIC ROUTINE Y . |
| B1A02:11 | Speaker #2: Circuit Short To Ground | REFER to DIAGNOSTIC ROUTINE Y . |
| B1A02:12 | Speaker #2: Circuit Short To Battery | REFER to DIAGNOSTIC ROUTINE Y . |
| B1A02:13 | Speaker #2: Circuit Open | REFER to DIAGNOSTIC ROUTINE Y . |
| B1A03:01 | Speaker #3: General Electrical Failure | REFER to DIAGNOSTIC ROUTINE AA . |
| B1A03:11 | Speaker #3: Circuit Short To Ground | REFER to DIAGNOSTIC ROUTINE AA . |
| B1A03:12 | Speaker #3: Circuit Short To Battery | REFER to DIAGNOSTIC ROUTINE AA . |
| B1A03:13 | Speaker #3: Circuit Open | REFER to DIAGNOSTIC ROUTINE AA . |
| B1A04:01 | Speaker #4: General Electrical Failure | REFER to DIAGNOSTIC ROUTINE AB . |
| B1A04:11 | Speaker #4: Circuit Short To Ground | REFER to DIAGNOSTIC ROUTINE AB . |
| B1A04:12 | Speaker #4: Circuit Short To Battery | REFER to DIAGNOSTIC ROUTINE AB . |
| B1A04:13 | Speaker #4: Circuit Open | REFER to DIAGNOSTIC ROUTINE AB . |
| B1A56:21 | Antenna: Signal Amplitude < Minimum | REFER to DIAGNOSTIC ROUTINE A . |
| B1A89:11 | Satellite Antenna: Circuit Short To Ground | REFER to DIAGNOSTIC ROUTINE G . |
| B1A89:13 | Satellite Antenna: Circuit Open | REFER to DIAGNOSTIC ROUTINE G . |
| B1D19:49 | Compact Disc Unit: Internal Electronic Failure | CLEAR the Diagnostic Trouble Code (DTC). REPEAT the self-test. If Diagnostic Trouble Code (DTC) B1D19:49 is retrieved again, INSTALL a new Audio Control Module (ACM). REFER to AUDIO CONTROL MODULE (ACM) . |
| U0155:00 | Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Subject Type Information | REFER to DIAGNOSTIC ROUTINE R . |
| U0253:00 | Lost Communication With Accessory Protocol Interface Module: No Sub Type Information | REFER to DIAGNOSTIC ROUTINE U . |
| U0256:00 | Lost Communication With Front Controls Interface Module "A": No Sub Type Information | REFER to DIAGNOSTIC ROUTINE V . |
| U201A:51 | Control Module Main Calibration Data: Not Programmed | CHECK vehicle service history for recent service actions related to this module. This Diagnostic Trouble Code (DTC) sets due to incomplete or incorrect Programmable Module Installation (PMI) procedures. If there have been recent service actions with this module, REPEAT/PERFORM the Programmable Module Installation (PMI) procedure as directed by the scan tool. If there have been no recent service actions, INSTALL a new module to correct the failure to retain configuration data. REFER to AUDIO CONTROL MODULE (ACM) . |
| U2100:00 | Initial Configuration Not Complete: No Sub Type Information | CHECK vehicle service history for recent service actions related to this module. This Diagnostic Trouble Code (DTC) sets due to incomplete or incorrect Programmable Module Installation (PMI) procedures. If there have been recent service actions with this module, REPEAT/PERFORM the Programmable Module Installation (PMI) procedure as directed by the scan tool. If there have been no recent service actions, INSTALL a new module to correct the failure to retain configuration data. REFER to AUDIO CONTROL MODULE (ACM) . |
| U2101:00 | Control Module Configuration Incompatible: No Sub Type Information | CHECK vehicle service history for recent service actions related to this module. This Diagnostic Trouble Code (DTC) sets due to incomplete or incorrect Programmable Module Installation (PMI) procedures. If there have been recent service actions with this module, REPEAT/PERFORM the Programmable Module Installation (PMI) procedure as directed by the scan tool. If there have been no recent service actions, INSTALL a new module to correct the failure to retain configuration data. REFER to AUDIO CONTROL MODULE (ACM) . |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the Diagnostic Trouble Code (DTC). REPEAT the self-test. If Diagnostic Trouble Code (DTC) U3000:41 is retrieved again, INSTALL a new Audio Control Module (ACM). REFER to AUDIO CONTROL MODULE (ACM) . |
| U3000:42 | Control Module: General Memory Failure | CLEAR the Diagnostic Trouble Code (DTC). REPEAT the self-test. If Diagnostic Trouble Code (DTC) U3000:42 is retrieved again, INSTALL a new Audio Control Module (ACM). REFER to AUDIO CONTROL MODULE (ACM) . |
| U3000:96 | Control Module: Component Internal Failure | REFER to DIAGNOSTIC ROUTINE G . |
| U3003:16 | Battery Voltage: Circuit Voltage Below Threshold | REFER to DIAGNOSTIC ROUTINE W . |
| U3003:17 | Battery Voltage: Circuit Voltage Above Threshold | REFER to DIAGNOSTIC ROUTINE X . |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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