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 THE DTC IS ACTIVE

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

Yes
- Refer to the COMMUNICATION - NON-DTC BASED DIAGNOSTICS - 2500 HD & 3500 HD article and perform the NO RESPONSE FROM ICS (INTEGRATED CENTER STACK) diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCs diagnostic procedure.