LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P051B-Crankcase Pressure Sensor Circuit Range/Performance >> Testing >> Diagnostic Test

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.
  1. 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.
  2. CHECK FOR CRANKCASE VENTED TO ATMOSPHERE 
    1. Inspect engine for crankcase leaks of oil or crankcase gases.
    2. Check the valve cover gasket, crankcase breather tube, dipstick tube, block plugs, and oil fill cap.

      Are any leaks found?

      Yes 

      No 

      • Go To  3.
  3. CHECK FOR HIGH RESISTANCE IN THE (K926) CRANKCASE PRESSURE SENSOR SIGNAL CIRCUIT 
    Fig 1: Checking Crankcase Pressure Signal Circuit For An Open Or High Resistance
    GC0137339Courtesy of CHRYSLER LLC
    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 of the (K926) Crankcase Pressure Signal circuit between the Crankcase Pressure Sensor harness connector and the PCM C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4.

      No 

      • Repair the (K926) Crankcase Pressure Signal circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  4. CHECK THE CRANKCASE PRESSURE SENSOR 
    1. Reconnect the PCM C1 harness connector.
    2. Turn the ignition on.
    3. Connect a jumper between the (F855) 5-Volt Supply circuit and the (K926) Crankcase Pressure Sensor Signal circuit at the Crankcase Pressure Sensor harness connector.
    4. With the scan tool, read DTCs.

      Is DTC P051C 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 

      • 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 .
scientia non olet · About LEMON Manuals