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.

ACTIVE DTC
NOTE:
A faulty fuel injector can cause an erroneous CKP or CMP DTC to set. If there are any fuel injector related DTCs present, repair those DTCs before proceeding.

NOTE:
If there are any 5-Volt supply DTCs present, repair those DTCs before proceeding.
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, or attempt to start the engine.
6. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK THE CAMSHAFT SENSOR
1. Turn the ignition off.
2. Disconnect the CMP Sensor harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Measure the resistance between the (F857) 5-Volt supply circuit and the (K44) CMP Signal circuit of the CMP sensor.
  Is the resistance between 900 and 1100 Ohms?
  
  Yes
  - Go To 3.
  No
  - Replace the Camshaft Position Sensor in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (F857) 5-VOLT SUPPLY CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 1: Checking CMP 5-Volt Supply Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
1. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
2. Measure the resistance of the (F857) 5-Volt Supply circuit between the PCM C1 harness connector and the CMP Sensor harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (F857) 5-Volt Supply circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K916) RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE

Fig 2: Checking CMP Return Circuit For Open Or High Resistance
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (K916) Sensor Return circuit between the PCM C1 harness connector and the CMP Sensor harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the (K916) Sensor Return circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE (K44) SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 3: Checking CMP Signal Circuit For Short To Ground
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K44) CMP Signal circuit in the CMP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the (K44) CMP Signal circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 6.
CHECK FOR THE (K44) SIGNAL CIRCUIT SHORTED TO THE (F857) 5-VOLT SUPPLY CIRCUIT

Fig 4: Checking Signal Circuit For Short To 5-Volt Supply Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (K44) CMP Signal circuit and the (F857) 5-Volt Supply circuit in the CMP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K44) CMP Sensor circuit and the (F857) 5-Volt supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 7.
CHECK FOR THE (K44) SIGNAL CIRCUIT SHORTED TO THE (K916) RETURN CIRCUIT

Fig 5: Checking Signal Circuit For Short To Return Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (K44) CMP Signal circuit and the (K916) Sensor Return circuit in the CMP Sensor harness connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the short between the (K44) CMP Signal circuit and the (K916) Sensor Return circuit.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 8.
CHECK THE (K44) SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Fig 6: Checking Signal Circuit For Short To Voltage
Courtesy of CHRYSLER LLC
1. Turn the ignition on.
2. Measure the voltage on the (K44) CMP Signal circuit at the CMP sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair (K44) CMP Signal circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 9.
CHECK THE POWERTRAIN CONTROL MODULE

Fig 7: Checking Signal Circuit For Short To Voltage
Courtesy of CHRYSLER LLC
1. Reconnect the PCM C1 harness connector.
2. Measure the voltage of the (K44) CMP Signal circuit at the CMP sensor harness connector.
  Is the voltage reading below 1.0 Volt?
  
  Yes
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
  No
  - Replace and program the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .