Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

EXTERNAL DISC MODULE

With the scan tool, erase the DTCs.
Replace the problem CD with a good, clean, unscratched, music CD.
Turn the radio CD player on.
With the scan tool, read the active DTCs.
Does the Scan Tool display: B1421-00- AUDIO CD READ ERROR/INOPERABLE DISC?

Yes
- Eject the inoperative CD and replace the External Disc Module (EDM) in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Test Complete.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .