Diagnostic Test

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE:

Make sure the battery is fully charged before proceeding.

Turn the ignition on.
With the scan tool, read the active DTCs.
Does the scan tool display: U0140-LOST COMMUNICATION WITH BODY CONTROL MODULE?

Yes
- Refer to NO RESPONSE FROM BCM (BODY CONTROL MODULE) and perform the NO RESPONSE FROM BCM (BODY CONTROL MODULE) diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.