Browsing around my '13 workshop manual I found this test mode. I can't remember if I've seen this or not on here and I thought someone might be interested in it if not.
Audio Control Module (ACM) Self-Diagnostic Mode
NOTE: If the Audio Control Module (ACM) is completely inoperative (does not power up), the part number decal on the Audio Control Module (ACM) chassis can be used to attain the ACM part number.
Turn the ACM on.
Operate the audio system in radio tuner (AM/FM) mode.
Press and hold the eject button, and within 1 second, press the seek up button until the speaker walk-around test begins.
The display indicates each speaker as it is tested.
NOTE: If the speaker walk-around test is the only test required, this procedure can be stopped after Step 3 by turning the ACM off or by selecting exit using the touchscreen.
Once the speaker walk-around test is complete, the following information is available through the "BEZEL DIAGNOSTICS" menu using the audio system control buttons:
NOTE: The AHU Diagnostics refers to the ACM and EFP Diagnostics refers to the FCIM .
Menu
Sub-Menu
APIM Diagnostics
Part Numbers
Software Versions
Configuration Status
GPS Information
Tones Test
Rear Tones Test
Touch Screen Calibration
Touch Screen Activation Test
Display Test Pattern
RGB Pixel Test
Exit Diagnostics
AHU Diagnostics
AHU Part Numbers/Sirius ESN
Radio Signal Strength
Exit Diagnostics
EFP Diagnostics
EFP Part Number
Exit Diagnostics
To exit the self-diagnostic mode, turn the ACM off.
