Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

DTC ACTIVE
1. Turn the ignition on.
2. With the scan tool, record all Freeze frame data.
3. With the scan tool, erase DTCs.
4. Turn the ignition off for 75 seconds.
5. Start the engine and let idle for one minute.
6. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE (K664) CRANKCASE HOSE PRESSURE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Crankcase Hose Pressure Sensor harness connector.
3. Measure the voltage on the (K664) Crankcase Hose Pressure Signal circuit at the Crankcase Hose Pressure Sensor harness connector.
  Is the voltage above 5.1 Volts?
  
  Yes
  - Repair the (K664) Crankcase Hose Pressure Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 3
CHECK THE (K664) CRANKCASE HOSE PRESSURE SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Disconnect the PCM C1 harness connector.
2. Measure the resistance of the (K664) Crankcase Hose Pressure Signal circuit between the Crankcase Hose Pressure Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K664) Crankcase Hose Pressure Signal circuit for an open/high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 4
CHECK THE (K916) CRANKCASE HOSE PRESSURE RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K916) Crankcase Hose Pressure Return circuit between the Crankcase Hose Pressure Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K916) Crankcase Hose Pressure Return circuit for an open/high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 5
CRANKCASE HOSE PRESSURE SENSOR
1. Reconnect the PCM C1 harness connector.
2. Turn the ignition on.
3. With the Crankcase Hose Pressure Sensor still disconnected, check the scan tool for DTCs.
  Does the scan tool display DTC P04E2 active?
  
  Yes
  - Replace the Crankcase Hose 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. Refer to MODULE, POWERTRAIN CONTROL, 6.7L DIESEL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .