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 AN ACTIVE DTC

NOTE:

Before continuing, check with customer to see if any heavy payloads or trailers were used. Repair as necessary.

Perform any Service Bulletins that may apply.
Turn the ignition on.
With the scan tool, read and record the Environmental Data to help identify the conditions in which the DTC was set.
Start the Engine.
With the scan tool, record and erase DTCs.
Place the vehicle in "Transport Mode" switch to ON.
Wait 45 seconds.
With the vehicle in "Transport Mode" switch to OFF.
Wait 45 seconds.
With the scan tool, read ASCM DTCs.
Is the DTC active?

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
- Test complete, the condition or conditions that originally set this DTC are not present at this time.