Diagnostic Test

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

CNG TANK PRESSURE SENSOR
1. Start the engine.
2. With the scan tool, navigate to Systems Tests and select Forced CNG mode.
3. With the scan tool, select view DTCs.
  Is the DTC active or pending?
  
  Yes
  - Replace the CNG Tank Pressure Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
POWERTRAIN CONTROL MODULE
1. Start the engine.
2. With the scan tool, navigate to Systems Tests and select Forced CNG mode.
3. With the scan tool, select view DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Test complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .