Diagnostic Test
WARNING: This page is about a different car, the 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR AN ACTIVE DTC NOTE:
Diagnose all CAN B and C communication DTCs before continuing.
- Turn the ignition on.
- With the scan tool, read DTCs and record on the repair order.
Is the DTC active or pending?
Yes
- Go To 2
No
- Perform the STORED LOST COMMUNICATION DTCs diagnostic procedure. Refer to DIAGNOSIS AND TESTING .
- SAS COMMUNICATION RELATED DTCs IN OTHER MODULES
- With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs "Logged Against" the SAS at this time?
Yes
- Perform the U0212-LOST COMMUNICATION WITH SCM diagnostic procedure. Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 2500 HD & 3500 HD article. .
No
- Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL . Refer to PCM/ECM REPROGRAMMING - GAS .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- With the scan tool, select Network Diagnostics.