Audio System
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Scheme 1
Inspection and Verification
Note. The audio control module (ACM) is also referred to as the audio unit.
Scheme 2
- Verify the customer concern by operating the electronic audio system with the engine running and the vehicle in and out of motion.
- Visually inspect for obvious signs of mechanical and electrical damage.
- If the fault is not visually evident, proceed to diagnose the audio system by: entering the speaker walk-around test.
Speaker Walk-Around Test
Note. To enter the speaker walk-around test, the ACM must be turned on and in radio tuner mode (AM/FM).
- To enter the speaker walk-around test, simultaneously press the ACM Preset Buttons 3 and 6 (1 and 3 for ULC radio only).
- The speaker walk-around test stops at each speaker and applies sound to each speaker for about 1-2 seconds. Each speaker is tested and displayed on the ACM in the following sequence: RF, LF, LR, RR.
ACM Self-Diagnostic Mode
Note. To enter the speaker walk-around test or ACM self-diagnostic mode, the ACM must be turned on and in radio tuner mode (AM/FM). The ACM self-diagnostic mode can only be entered while in the speaker walk-around test.
- The ACM self-diagnostic mode has five tests available: Preset button 1 = Audio internal/external SELF TEST. If SELF FAIL is displayed, press TUNE > to scroll view the diagnostic trouble codes (DTCs) stored. Refer to «ACM DIAGNOSTIC TROUBLE CODE INDEX»(/ford/crown-victoria/ii-1997-2011/remont/entertainment-systems/#entertainment-system-general-information) . If system is OK, SELF PASS is displayed. Preset button 2 = View/clear continuous DTCs. NO DTCS is displayed if no DTCs are retrieved. If DTCS FOUND is displayed, press TUNE > button to view the DTCs retrieved. Refer to «ACM DIAGNOSTIC TROUBLE CODE INDEX»(/ford/crown-victoria/ii-1997-2011/remont/entertainment-systems/#entertainment-system-general-information) . To clear all DTCs, press the EJECT button. DTCS CLEAR will be displayed. Preset button 3 = SIGNAL TEST. This test measures the average strength at the current tuner setting. Preset button 4 = Software configuration level. This test queries each radio system controller for their software configuration level. SOFT LEVELS will be displayed upon completion of the query. Press TUNE > to scroll view the software configuration version level. CONFIGURATIONS AND SOFTWARE LEVELS Controller Description Radio Display Example Main Main micro software version MAIN ##### CDSP CDSP micro software version CDSP ##### ADSP ADSP micro software version ADSP ##### CD/DJ CD/DJ software version DJ ##### CD changer CDR software version CD ##### RICP Rear seat controll RICP ##### RSWC Redundant steering wheel control software version RSWC ##### EQ EQ ID, model, EQ version EQ ##### Preset button 5 = DISPLAY TEST. This test will light all the ACM display segments for five seconds and then turn all segments off. When the test is complete, DISPLAY TEST is displayed on the bezel.
- To enter these tests, press the preset button desired while in the speaker walk-around test. This will abort the speaker walk-around test and start the selected test.
- To exit the ACM self-diagnostic mode, turn the ignition switch or ACM off.
- If the concern remains and the fault is not detected, proceed to the Symptom Chart to continue diagnostics.
ACM Diagnostic Trouble Code (DTC) Index
| DTC | Description | Source | Action |
|---|---|---|---|
| B1342 | ECU is Defective | ACM | CLEAR and DOCUMENT the DTCS. CARRY OUT the ACM on - demand self-test. REMOVE the ACM and SEND it to an authorized Ford audio system repair facility if DTC B1342 is retrieved again. TEST the system for normal operation. |
| B2401 | Audio Tape Deck Mechanism Fault | ACM | VERIFY that no tape is inserted in the ACM, CLEAR and DOCUMENT the DTCS. CARRY OUT the ACM on-demand self-test. If DTC B2401 is retrieved again, REMOVE the ACM and SEND it to an authorized Ford audio system repair facility, TEST the system for normal operation. |
| B2403 | Audio CD/DJ Internal Fault | ACM | Go To PINPOINT TEST C . |
| B2405 | Audio Single-Disc CD Player Thermal Shutdown Fault | ACM | Not applicable. Vehicle is not equipped with single-dics CD. CLEAR and DOCUMENT DTCs. CARRY OUT ACM self-test.e |
| B2406 | Audio Single-Disc CD POlayer Internal Fault | ACM | Not applicable. Vehicle is not equipped with single-dics CD. CLEAR and DOCUMENT DTCs. CARRY OUT ACM self-test. |
| B2477 | MOdule Configuration Failure | ACM | REFER to MODULE COMMUNICATIONS NETWORK . |
| U2003 | Audio Compact Disc/Disc Jockey is Not Responding | ACM | If equipped with CD/dJ, Go to PINPOINT TEST C |
| U2005 | Audio Rear Intergrated Control Panel Unit is Not Responding | ACM | Not applicable. Vehicle is not equipped with rear integrated control panel (RICP). CLEAR and DOCUMENT DTCs. CARRY OUT ACM self-test. |
| U2008 | Audio Phone is Not Responding | ACM | Not applicable. Vehicle is not equipped with audio phone. CLEAR and DOCUMENT DTCs. CARRY OUT ACM self-test. |
| U2024 | Audio Redundant Steering Wheel Control is Not Responding | AVM | Go To Tinpoint Test H. |
ACM DIAGNOSTIC TROUBLE CODE INDEX
