Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs in the PCM.
3. Crank the engine for no more than 10 seconds if it will not start.
4. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK (K31) FUEL PUMP CONTROL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Disconnect the PDC harness connectors.
4. Measure the resistance of the (K31) Fuel Pump Control circuit between the PCM C1 harness connector and the PDC harness connectors.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (K31) Fuel Pump Control circuit for an open/high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 3
POWER DISTRIBUTION CENTER (PDC)
1. Replace the Power Distribution Center in accordance with the service information.
2. Ignition on, engine not running.
3. With the scan tool, erase DTCs in the PCM.
4. Crank the engine for no more than 10 seconds if it will not start.
5. With the scan tool, select View DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module (PCM) in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Test Complete.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .