Operation CHARM: Car repair manuals for everyone.

Reading and Clearing Diagnostic Trouble Codes



Audio Control Module (ACM) Self-Diagnostic Mode

Audio Systems Without Navigation

1. Turn the Audio Control Module (ACM) on.

2. Operate the audio system in radio tuner (AM/FM) mode.

3. Press and hold preset buttons 3 and 6 for 3 seconds until the speaker walk test begins.
- The display indicates each speaker as it is tested.

4. NOTE: If the speaker walk test is the only test required, this procedure can be stopped after Step 3 by turning the ACM off.

Before the speaker walk test is complete, carry out any of the following actions:






5. To exit the self-diagnostic mode, turn the ACM off.


Satellite Radio Electronic Serial Number (ESN) Retrieval - Vehicles Without Navigation

1. Operate the audio system in satellite radio mode.

2. Press and hold the AUX button and preset button 1, simultaneously.
- The Satellite Digital Audio Receiver System (SDARS) module Electronic Serial Number (ESN) displays on the screen.

3. Record the SDARS module ESN.

4. Turn the audio system off.


Audio Systems With Navigation

1. Turn the Audio Control Module (ACM) on.

2. Operate the audio system in radio tuner (AM/FM) mode.

3. Press and hold preset buttons 3 and 6 for 3 seconds until the speaker walk test begins.
- The display indicates each speaker as it is tested.

4. NOTE: If the speaker walk test is the only test required, this procedure can be stopped after this step, or by allowing the speaker walk test to complete on its own.

Before the speaker walk test is complete, press the "End Test" selection.






5. The following tests are available through the "BEZEL DIAGNOSTICS" menu:









6. To exit the self-diagnostic mode, press the "Exit Diagnostics" selection from the "BEZEL DIAGNOSTICS" menu.