Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

OTHER DTCS
1. Turn the ignition on.
2. Wait five seconds after ignition is turned on.
3. With the scan tool, read DTCs.
  Is DTC P051D or P051C active?
  
  Yes
  - Troubleshoot other DTCs first.
  No
  - Go To 2.
CHECK FOR CRANKCASE VENTED TO ATMOSPHERE
1. Turn the ignition off.
2. Inspect engine for crankcase leaks of oil or crankcase gases.
3. Check the valve cover gasket, crankcase breather tube, dipstick tube, block plugs, and oil fill cap.
  Are any leaks found?
  
  Yes
  - Repair leaks.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3.
CHECK FOR ICE BUILD UP IN THE CRANKCASE VENTILATION SYSTEM
1. Turn the ignition on.
2. With the scan tool, erase DTCs.
3. Start the engine and allow the coolant temperature to reach 82°C (180°F), then idle for at least five minutes.
4. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 4.
  No
  - Repair complete. Fault was due to ice build up in the crankcase ventilation system.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
P051C ACTIVE
1. Turn the ignition off.
2. Disconnect the crankcase pressure sensor harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Is DTC P051C active?
  
  Yes
  - Go To 5.
  No
  - Go To 5.
P051D ACTIVE
1. Connect a jumper wire between the (F855) 5-Volt Supply circuit and the (K926) Crankcase Pressure Signal circuit at the Crankcase Pressure Sensor harness connector.
2. With the scan tool, read DTCs.
  Is DTC P051D active?
  
  Yes
  - Replace the Crankcase Pressure Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 6.
PCM HARNESS INSPECTION
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Visually inspect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
  
  Dirty or damaged pins?
  
  Yes
  - Replace/repair the PCM or engine harness.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 7.
POWERTRAIN CONTROL MODULE
1. Turn the ignition off.
2. Measure the resistance of the:
  - (F855) 5-Volt Supply circuit between the Crankcase Pressure Sensor harness connector and the PCM C1 harness connector.
  - (K926) Crankcase Pressure Sensor Signal circuit between the Crankcase Pressure Sensor harness connector and the PCM C1 harness connector.
  - (K16) Crankcase Pressure Sensor Return circuit between the Crankcase Pressure Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms for each circuit?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - High resistance has been detected in the engine harness. Repair/replace engine harness.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .