Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Turn the ignition on.
2. With a scan tool, read PCM DTCs.
  Is the DTC active at this time?
  
  Yes
  - Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the U0155-Loss Communication with Cluster/CCN diagnostic procedure.
  No
  - Perform the CHECKING FOR AN INTERMITTENT DTC. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .