ACM Self-Diagnostic Mode (ACM= Audio Control Module)
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 has five tests available:
Preset Button 1 = Audio internal/external SELF TEST. This test is an on-demand self-test. If SELF FAIL is displayed, press TUNE > to scroll view the DTCs stored. Refer to the Diagnostic Trouble Code (DTC) Index. If the system is OK, SELF PASS will be displayed.
Preset Button 2 = View/Clear continuous DTCs. NO DTCS is displayed if no DTCs are retrieved. If DTCS FOUND is displayed, press TUNE > to view the DTCs retrieved. Refer to the Diagnostic Trouble Code (DTC) Index. To clear all DTCs, press the EJECT button. DTCS CLEAR will be displayed.
NOTE: Always DOCUMENT, CLEAR and CARRY OUT the CDX6 On-Demand Self-Test again.
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 its software configuration level. SOFT LEVELS will be displayed upon completion of the query. Press TUNE > to scroll view the software configuration version level.
Preset Button 5 = DISPLAY TEST. This test will light all the ACM display segments for five seconds. When the test is complete, DISPLAY TEST is displayed on the bezel.
To enter these tests, depress the desired preset button while in the speaker walk-around test or while in the ACM self-diagnostic mode.
To exit the ACM self-diagnostic mode, turn the ignition switch or the audio unit off.
If the concern remains and the fault is not detected, proceed to the Symptom Chart to continue diagnostics.
Diagnostic Trouble Code (DTC) Index
Diagnostic Trouble Code (DTC) Index
DTC Description Action
B1342 ECU Is Defective CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility if DTC B1342 is retrieved again. TEST the system for normal operation after the repair.
B2401 Audio Tape Deck Mechanism Fault Not applicable. Vehicle is not equipped with a cassette player. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test.
B2402 Audio CD/DJ Thermal Shutdown Fault Not applicable. Vehicle is not equipped with a CD/DJ player. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test.
B2403 Audio CD/DJ Internal Fault Not applicable. Vehicle is not equipped with a CD/DJ player. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test.
B2405 Audio Single-Disc CD Player Thermal Shutdown Fault Not applicable to CDX6. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC 2405 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford system repair facility. TEST the system for normal operation after the repair.
B2406 Audio Single-Disc CD Player Internal Fault Not applicable to CDX6. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test. If DTC 2406 is retrieved again, REMOVE the audio unit and SEND it to an authorized Ford system repair facility. TEST the system for normal operation after the repair.
U2003 Audio Compact Disc/Disc Jockey (CD/DJ) Is Not Responding Not applicable. Vehicle is not equipped with a CD/DJ player. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test.
U2005 Audio Rear Integrated Control Panel (RICP) Unit Is Not Responding NOTE: U2005 is retrieved if RICP is not present, disconnected or inoperative.
VERIFY if the vehicle is equipped with RICP.
U2008 Cellular Phone Communication Fault. Not applicable. Vehicle is not equipped with a cellular phone. CLEAR and DOCUMENT the DTCs. CARRY OUT the self-test.
