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.
- Turn the ignition on, engine not running.
- 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 VOLTAGE
- Disconnect the FPCM harness connector.
- Measure the voltage on the (N13) FPCM Pump Feed circuit at the FPCM harness connector.
Is there voltage present?
Yes
- Repair the (N13) FPCM Pump Feed circuit for a short to voltage.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 3
- CHECK THE (Z916) GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
- Turn the ignition off.
- Measure the resistance between ground and the (Z916) Ground circuit at the FPCM harness connector.
Is the resistance above 10k 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 (Z916) Ground circuit for an open or high resistance.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- Replace the Fuel Pump Control Module according to the Service Information.