Diagnostic Test

1. Turn the ignition on.
2. With the scan tool, read DTCs. Copy DTC and Freeze Frame information.
3. Start the engine and allow it to idle or crank the engine if it will not start. Attempt to operate vehicle under conditions similar to freeze frame data
   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.

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

   Is the DTC Active at this time?

   Yes 

   • Go To  2

   No 

   • Go To  11

Is the P0365 or P0369 DTC also active at this time?

Yes 

• Go To  3

No 

• Go To  6

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

   Is the voltage between 4.8 and 5.2 volts?

   Yes 

   • Go To  4

   No 

   • Repair the (F856) 5-Volt Supply circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
   CAUTION:

   Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

3. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
4. Measure the resistance of the (K900) Sensor ground circuit from the CMP Sensor harness connector to the GPEC Adaptor.

   Is the resistance below 5.0 Ohms?

   Yes 

   • Go To  5

   No 

   • Repair open or excessive resistance in the (K900) Sensor ground circuit.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Remove and exchange the CMP Sensor with the CMP Sensor on the opposite bank.
   NOTE:

   Inspect the Camshaft magnetic target for damage in accordance with the service information. If a problem is found repair as necessary.

2. Reconnect the PCM C2 and Cam Sensor harness connectors.
3. Turn the ignition on,
4. With the scan tool, erase DTCs.
5. Start the engine and allow it to idle or crank the engine if it will not start. Attempt to operate vehicle under conditions similar to freeze frame data
6. With the scan tool, read DTCs.

   Did the CMP Sensor DTCs for the opposite bank set as active?

   Yes 

   • Replace the Camshaft Position Sensor in accordance with the service information. Refer to SENSOR, CAMSHAFT POSITION, 3.6L, REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  10

1. Disconnect the CMP Sensor harness connector.
2. Measure the voltage on the (K44) CMP Sensor Signal 1/1 circuit in the CMP Sensor harness connector.

   Is the voltage above 5.2 volts?

   Yes 

   • Repair the (K44) CMP Sensor Signal 1/1 circuit for a short to voltage.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  7

1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Measure the resistance between ground and the (K44) CMP Sensor Signal 1/1 circuit at the CMP Sensor harness connector.

   Is the resistance above 10k Ohms?

   Yes 

   • Go To  8

   No 

   • Repair the short to ground in the (K44) CMP Sensor Signal 1/1 circuit.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
2. Measure the resistance of the (K44) CMP Sensor Signal 1/1 circuit between the CMP Sensor harness connector and the GPEC Adaptor.

   Is the resistance below 5.0 Ohms?

   Yes 

   • Go To  9

   No 

   • Repair the (K44) CMP Sensor Signal 1/1 circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Remove and exchange the CMP Sensor with the CMP Sensor on the opposite bank.
   NOTE:

   Inspect the Camshaft sprocket for damage in accordance with the service information. If a problem is found repair as necessary.

2. Reconnect the PCM C2 and Cam Sensor harness connectors.
3. Turn the ignition on,
4. With the scan tool, erase DTCs.
5. Start the engine and allow it to idle or crank the engine if it will not start.
6. With the scan tool, read DTCs.

   Did the CMP Sensor DTCs for the opposite bank set as active?

   Yes 

   • Replace the faulty Camshaft Position Sensor in accordance with the service information. Refer to SENSOR, CAMSHAFT POSITION, 3.6L, REMOVAL .
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  10

1. Perform any Technical Service Bulletins that may apply.
2. Anything that affects the engines VVT system may cause a CMP Sensor DTC to set. Before replacing the PCM, verify that there are no engine mechanical issues that may be causing the fault to set such as but not limited to the timing chain, camshafts and sprockets, camshaft phasers, oil quality, level or oil pressure issues.
3. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the related Sensor and the Powertrain Control Module (PCM).
4. Look for any chafed, pierced, pinched or partially broken wires.
5. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related Sensor and the Powertrain Control Module connectors.

   Were there any issues?

   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 .

1. Turn the ignition off.
2. Disconnect the harness connectors at the PCM and Cam Sensor and inspect for wire chaffing or rub conditions, terminals pushed out on the wiring connector, bent terminals at the PCM and Crank Sensor, water in the connector cavities, presence of corrosion on the terminals of the connectors or components.
3. Visually inspect the mounting area of Cam Sensor for debris/damage or a loose sensor. Remove the Cam Sensor and inspect the end of the sensor for signs of damage or debris. Rotate the engine and if possible, inspect the target wheel for any signs of damage. Reinstall the Cam Sensor and ensure that the sensor is properly installed and torqued to proper specification.
   NOTE:

   Due to the fact that this DTC is set by an intermittent loss of the signal, the most likely cause is a poor connection at the Cam Sensor or PCM terminals, or a poor signal between the Cam Sensor and target wheel. Because of this, unplugging and reconnecting the harness connectors, or repositioning the Cam Sensor will often repair the condition that set the DTC.

   Were any problems found?

   Yes 

   • Perform the appropriate repair.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  12

1. Check the history of the vehicle for previous Cam Sensor related DTCs within the past 90 days.

   Did the repair history show that the vehicle was in dealership for a Cam Sensor fault within the past 90 days?

   Yes 

   • Replace the Cam Sensor in accordance with the service information.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Test complete. Reconnect the harness connectors, and erase the DTC. The most likely cause was a poor connection at one of the harness connectors. Verify the DTC does not return.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .