Diagnostic Test

1. Turn the ignition on.
2. Using the scan tool, read DTCs. Copy DTC and Freeze Frame information.
3. Start the engine and allow it to reach operating temperature.
   WARNING:

   When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

   NOTE:

   Attempt to operate the vehicle under conditions similar to which the DTC was set.

   NOTE:

   It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set.

4. With the scan tool, read the active DTCs.

   Is the DTC Active at this time?

   Yes 

   • Go To  2

   No 

   • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION . .

1. Turn the ignition off.
2. With a lab scope, backprobe the (K44) CMP Signal circuit in the CMP harness connector.
   WARNING:

   When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

3. Ignition on, engine not running.
4. Observe the lab scope screen.
5. Start the engine.
6. Observe the lab scope screen.

   Are there any irregular or missing signals?

   Yes 

   • Go To  3

   No 

   • Go To  8

1. Turn the ignition off.
2. Visually inspect the related wire harness including the ground circuit. Look for any chafed, pierced, pinched or partially broken wires.
3. Verify that there is good pin to terminal contact in the CMP Sensor and Powertrain Control Module connectors.
4. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out or corroded terminals.
5. Make sure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) are torqued to the proper specification.
6. Perform any TSBs that may apply.

   Were any of the above conditions present?

   Yes 

   • Repair as necessary.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Go To  4

Fig 1: Measuring Voltage On 5-Volt Supply Circuit In CMP Sensor Harness Connector

Courtesy of CHRYSLER GROUP, LLC

1. Disconnect the CMP Sensor harness connector.
2. Ignition on, engine not running.
3. Measure the voltage on the (F856) 5-Volt Supply circuit in the CMP harness connector.

   Is the voltage between 4.5 and 5.2 Volts?

   Yes 

   • Go To  5

   No 

   • Repair the open or short to ground in the (F856) 5-Volt Supply circuit. Use the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) when checking for an open circuit to prevent PCM harness connector terminal damage.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

1. Turn the ignition off.
2. Carefully disconnect the Battery Ground cable.
3. Remove the Camshaft Position Sensor. Refer to SENSOR, CAMSHAFT POSITION, REMOVAL .
4. Inspect the Tone Wheel/Pulse Ring for damage, foreign material or excessive movement. Refer to INSPECTION . .

   Were any problems found?

   Yes 

   • Repair or replace the Tone Wheel/Pulse Ring as necessary. Refer to SENSOR, CAMSHAFT POSITION, REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Go To  6

1. Install the CMP Sensor and connect the Battery cable.
2. With a lab scope, backprobe the (K24) CKP Signal circuit in the CKP harness connector.
   WARNING:

   When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

3. Ignition on, engine not running.
4. Wiggle the related wire harness and lightly tap on the Crank Position Sensor.
5. Observe the lab scope screen.
6. Start the engine.
7. Observe the lab scope screen.

   Are there any irregular or missing signals?

   Yes 

   • Verify that there is good pin to terminal contact in the CKP Sensor and Powertrain Control Module connectors. Replace the Crankshaft Position Sensor if no problems were found with the connectors. Refer to SENSOR, CRANKSHAFT POSITION, REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Go To  7

Repair 

• Verify that there is good pin to terminal contact in the CMP Sensor and Powertrain Control Module connectors. Replace the Camshaft Position Sensor if no problems were found with the connectors. Refer to SENSOR, CAMSHAFT POSITION, REMOVAL .
• Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

Fig 2: Checking CMP Signal Circuit For Short To Voltage

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Disconnect the CMP Sensor harness connector.
3. Disconnect the PCM C2 harness connector.
4. Ignition on, engine not running.
5. Measure the voltage on the (K44) CMP Signal circuit.
6. Wiggle the related wire harness while taking this measurement.

   Does the voltage ever increase above 0 Volts?

   Yes 

   • Repair the short to voltage in the (K44) CMP Signal circuit.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Go To  9

Fig 3: Checking CMP Signal Circuit For Open Or Excessive Resistance

Courtesy of CHRYSLER GROUP, LLC

1. Turn the ignition off.
2. Measure the resistance in the (K44) CMP Signal circuit from the CMP harness connector to the PCM C2 harness connector.
3. Wiggle the related wire harness while taking this measurement.

   Is the resistance below 5.0 Ohms?

   Yes 

   • Go To  10

   No 

   • Repair the excessive resistance in the (K44) CMP Signal circuit.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

Fig 4: Checking CMP Signal Circuit For Short To Ground

Courtesy of CHRYSLER GROUP, LLC

1. Measure the resistance between ground and the (K44) CMP Signal circuit in the CMP Sensor harness connector.
2. Wiggle the related wire harness while monitoring the resistance value.

   Does the resistance ever go below 100 Ohms?

   Yes 

   • Repair the short to ground in the (K44) CMP Signal circuit.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Go To  11

Fig 5: Checking CMP Signal Circuit For Short To 5-Volt Supply Circuit

Courtesy of CHRYSLER GROUP, LLC

1. Measure the resistance between the (F856) 5-Volt Supply circuit and the (K44) CMP Signal circuit in the CMP harness connector.
2. Wiggle the related wire harness while taking this measurement.

   Is the resistance below 5.0 Ohms?

   Yes 

   • Repair the short between the (F856) 5-Volt Supply circuit and the (K44) CMP Signal circuit.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Go To  12

1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related Sensor and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the CMP Sensor and the Powertrain Control Module connectors.
4. Perform any Technical Service Bulletins that may apply.

   Were there any problems found?

   Yes 

   • Repair as necessary.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .

   No 

   • Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .