Diagnostic Test

WARNING: This page is about a different car, the 2016 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC

Turn the ignition on.
With the scan tool, read MSMD DTCs.
Is the DTC active?

Yes
- Perform the diagnostic test procedure for Can Interior Bus. Refer to CAN C BUS NO RESPONSE .
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to STORED LOST COMMUNICATION DTCS .