Diagnostic Test

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

POWERTRAIN CONTROL MODULE (PCM) DTCS PRESENT
1. Ignition on.
2. With the scan tool, read DTCs in the PCM.
  Are there any active DTCs present?
  
  Yes
  - Refer to 3.6L & 5.7L - DIAGNOSTIC CODE INDEX or 6.4L - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
  No
  - Replace the Drive Train Control Module (DTCM) in accordance with the Service Information. Refer to MODULE, DRIVETRAIN CONTROL, REMOVAL .
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .