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.

ACTIVE DTC
NOTE:
Low battery voltage as well or an IOD fuse which is missing or not pushed in completely can cause the DTC to set. Make sure that the battery is fully charged and Ignition Off Draw (IOD) fuse is properly installed before continuing.
1. Ignition on, engine not running.
2. With a scan tool clear DTCs.
3. Turn the ignition off for 75 seconds.
4. Turn the ignition on.
5. With a scan tool read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECKING THE PCM POWERS AND GROUNDS
1. Refer to DIAGNOSIS AND TESTING, 6.7L and perform the CHECKING THE PCM POWERS AND GROUNDS diagnostic procedure.
  Were any problems found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3
CHECKING FOR TSB/PCM FLASH UPDATES
1. Check for any Service Bulletins or PCM flash updates that may apply.
  Were any Service Bulletins or PCM flash updates found?
  
  Yes
  - Perform the appropriate repair.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4
CAN B BUS HARDWARE DTCS ALSO ACTIVE
1. With a scan tool check for DTCs in the BCM.
  Are any CAN B Hardware related DTCs active at this time?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX - 2500 HD & 3500 HD .
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, 6.7L DIESEL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .