Diagnostic Test
WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
- DTC IS ACTIVE NOTE:
For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.
- Ignition on, engine not running.
- With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Perform the U0155-Lost Communication with Cluster/CCN diagnostic procedure. Refer to DTC INDEX - 1500 .
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to DIAGNOSIS AND TESTING .