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.

CHECK FOR OTHER AIR SUSPENSION CONTROL MODULE (ASCM) DTCS
1. Turn the ignition on.
2. With the scan tool, read ASCM DTCs and record on the repair order.
  Are there any other ASCM DTCs present?
  
  Yes
  - Repair the ASCM DTC(s). Refer to DIAGNOSIS AND TESTING .
  No
  - Go To 2
CHECK FOR AN ACTIVE DTC
1. With the scan tool, erase the DTCs.
2. With the scan tool, read ASCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 3
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.
COMPRESSOR CIRCUIT TEST ROUTINE
1. Turn the ignition on.
2. With the scan tool, under Miscellaneous Functions run the "Compressor Circuit Test" routine.
3. With the scan tool, erase the DTCs.
4. Test drive the vehicle at speeds above (15 mph) for five minutes.
5. With the scan tool, read the DTCs.
  Does the DTC remain active?
  
  Yes
  - Perform the "Compressor Circuit Test" routine again, if still unsuccessful.
  - 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
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .