Diagnostic Test

ACTIVE DTC 

1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.

   Is the status Active for this DTC?

   Yes 

   • Refer to 2.0L & 2.4L - DIAGNOSTIC CODE INDEX and perform the appropriate U0121-Lost Communication with Anti-Lock Brake Module diagnostic procedure.

   No 

   • Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.