Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY IF THE DTC IS ACTIVE

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

Yes
- Refer to the DTC INDEX article and perform the diagnostic test procedure for CAN INTERIOR BUS.
No
- Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCs diagnostic procedure.