Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
NOTE:
If DTC P025A, P0627, or P1205 are present, repair that DTC before proceeding with this test.
1. Turn the ignition on, engine not running.
2. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK THE (N13) FPCM PUMP FEED CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the FPCM harness connector.
3. Measure the resistance between ground and the (N13) FPCM Pump Feed circuit at the FPCM harness connector.
  Is the resistance less than 10k ohms?
  
  Yes
  - Repair the (N13) FPCM Pump Feed circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (N13) FPCM PUMP FEED CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Leave the ignition off.
2. Leave the FPCM harness connector disconnected.
3. Disconnect the PCM C1 harness connector.
4. Measure the resistance of the (N13) FPCM Pump Feed circuit from the FPCM harness connector to the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Fuel Pump Control Module according to the Service Information.
    Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (N13) FPCM Pump Feed circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .