Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs.
3. Turn ignition off to the lock position.
4. Ignition on, engine not running.
5. Wait ten seconds.
6. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 3
WRONG VIN PROGRAMMED IN PCM
1. Ignition on, engine not running.
2. With the scan tool, read the VIN in the PCM.
3. Compare VIN in the PCM to the vehicle VIN.
  Is the correct VIN programmed in the PCM?
  
  Yes
  - Replace the Air Suspension Control Module (ASCM) in accordance with the Service Information. Refer to MODULE, AIR SUSPENSION CONTROL, REMOVAL .
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL or MODULE, POWERTRAIN CONTROL, 6.7L DIESEL [ETK], REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to the appropriate Diagnostic & Testing article .
COMMUNICATION DTCS PRESENT
1. Turn ignition off to the lock position.
2. With the scan tool, read DTCs in all other modules. If any communications DTCs are present, perform the appropriate diagnostic procedure.
3. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.