Diagnostic Test

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

OTHER DTCS
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
  Are there any 5-Volt Reference DTCs ?
  
  Yes
  - Repair other DTCs first.
  No
  - Go To 2.
P051D ACTIVE
Is DTC P051D active?

Yes
- Go To 3.
No
- Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK FOR THE (K926) CRANKCASE PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT
1. Turn the ignition off.
2. Disconnect the Crankcase Pressure Sensor harness connector.
3. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
4. Measure the resistance between the (K926) Crankcase Pressure Sensor Signal circuit and all other circuits of the PCM C1 harness connector.
  Is the resistance below 10k Ohms between the (K926) Crankcase Pressure Sensor Signal circuit and all other circuits?
  
  Yes
  - Repair the (K926) Crankcase Pressure Sensor Signal circuit for a short to the circuit that measured below 10k Ohms.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4.
CHECK THE (K916) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 1: Checking Sensor Return Circuit For An Open Or High Resistance
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K916) Sensor Ground circuit between the Crankcase Pressure Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K916) Sensor Ground circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE CRANKCASE PRESSURE SENSOR
1. Reconnect the Crankcase Pressure Sensor harness connector.
2. Reconnect the PCM C1 harness connector.
3. Turn the ignition on.
4. While monitoring the scan tool, disconnect the Crankcase Pressure Sensor harness connector.
  Does the scan tool display P051C Crankcase Pressure Sensor low DTC as active or pending?
  
  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
  - 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 .