Diagnostic Test

WARNING: This page is about a different car, the 2012 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, read active DTCs.
  Is the DTC active at this time?
  
  Yes
  - Refer to U0140-00-LOST COMMUNICATION WITH BODY CONTROL MODULE (BCM) and perform the U0140-Lost Communication with Body Control Module diagnostic procedure.
  No
  - Refer to COMMUNICATION - DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.