Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
1. Perform any Technical Service Bulletins (TSBs) that may apply.
2. Turn the ignition on.
3. With the scan tool, record and erase DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 4
(Y30) AIR SPRING VALVE SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE
1. Disconnect the Air Suspension Solenoid Assembly harness connector.
2. Disconnect the ASCM C2 harness connector.
3. Disconnect the Air Suspension C1 harness connector.
4. Measure the resistance of the (Y35) Air Tank Enabled Solenoid circuit between the ASCM C2 harness connector and the Air Suspension C1 harness connector.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (Y35) Air Tank Enabled Solenoid circuit for an open or high resistance.
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
  No
  - Go To 3
AIR SUSPENSION CONTROL MODULE (ASCM)
1. Replace the Air Suspension Control Module (ASCM) in accordance with the Service Information. Refer to MODULE, AIR SUSPENSION CONTROL (ASCM), REMOVAL .
2. With the scan tool, erase the DTCs in the ASCM.
3. Cycle the ignition switch from off to on.
4. With the scan tool, read the DTCs in the ASCM.
  Does the DTC remain active?
  
  Yes
  - Replace the Air Suspension Compressor Assembly in accordance with the Service Information. Refer to COMPRESSOR ASSEMBLY, AIR SUSPENSION, REMOVAL .
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.
INTERMITTENT WIRING AND CONNECTORS
1. Using the wiring diagram/schematic as a guide, inspect the wiring harness and connectors.
2. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
3. Look for the data to change or for the DTC to reset during the wiggle test.
4. While monitoring the scan tool data relative to this circuit, move the selector switch to each position several times.
5. Look for the data to change other than as expected or for the DTC to reset.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE - ASCM VERIFICATION TEST .
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time.