Diagnostic Test

1. Check for any applicable Service Bulletins or Flash updates related to the DTC.

   Are there any applicable Service Bulletins or Flash updates?

   Yes 

   • Make the applicable repair.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  2

1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.

Did the DTC return?

Yes 

• Go To  3

No 

• Go To  4

1. Review the recorded DTCs.

   Are there any 5-Volt Reference DTCs present?

   Yes 

   • Conduct the applicable diagnostic procedure(s). Refer to: DTC INDEX (1 OF 3) and/or DTC INDEX (2 OF 3) and/or DTC INDEX (3 OF 3) .

   No 

   • Go To  6

1. Turn the ignition off.
   NOTE:

   The Camshaft 1/2 Position Sensor is located on the Intake Camshaft side of the Cylinder Head.

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 Cam 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, proper machining, or a loose sensor. Remove the Cam Sensor and inspect the end of the sensor for signs of damage or debris (contact marks, etc.). 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 

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

   No 

   • Go To  5

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 Camshaft Position Sensor in accordance with the Service Information. Refer to 2.0L - ENGINE SENSORS, REMOVAL AND INSTALLATION . With the scan tool, perform the "Cam/Crank Relearn" Procedure. The "Cam/Crank Relearn" Procedure  must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP sensor, flywheel, valvetrain, timing chain or gears. Failure to do so can cause a misfire fault to set.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Test complete. Reconnect the harness connectors and ensure that the Cam Sensor connector is locked properly. 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 .

1. Turn the ignition off.
2. Check the CMP Sensor harness connector for proper connection at the CMP Sensor.
3. Verify that the connector is completely plugged in and properly locked prior to disconnecting.
4. Disconnect the CMP Sensor harness connector and check for any pushed out, damaged or spread terminals.

   Were any issues found with the connector or terminals?

   Yes 

   • Repair the damaged terminal or properly connect and lock the CMP Sensor harness connector and retest for DTCs.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  7

1. Turn the ignition off.
2. Disconnect the harness connector at the component of the circuit being tested. Note:  The ECU harness connector should still be connected during this test step.
3. Turn the ignition on.
4. Set the DVOM to measure DC voltage.
5. Connect the negative lead of the DVOM to a known good ground.
6. With the positive lead of the DVOM, measure the voltage of the circuit being tested at the component harness connector.

Does the circuit have the proper voltage present?

Yes 

• Go To  8

No, voltage is below 4.8 volts: 

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

No, voltage is above 5.2 volts: 

• Repair the (F856) 5-Volt Supply circuit for a short to voltage.
• Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition off.
2. Disconnect the harness connector at the component of the circuit being tested. Note:  The ECU harness connector should still be connected during this test step.
3. Turn the ignition on.
4. Set the DVOM to measure DC voltage.
5. Connect the negative lead of the DVOM to a known good ground.
6. With the positive lead of the DVOM, measure the voltage of the circuit being tested at the component harness connector.

Does the circuit have the proper voltage present?

Yes 

• Go To  9

No, voltage is below 4.8 volts: 

• Go To  13

No, voltage is above 5.2 volts: 

• Repair the CMP Sensor 1/2 (K441) Position Signal 2 for a short to voltage.
• Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. The ignition must be off when checking the continuity of a circuit.
2. Isolate the circuit by disconnecting the Electronic Control Unit (ECU) and the component harness connector containing the circuit being tested. Note:  Use the appropriate SYSTEM WIRING DIAGRAM as a guide to follow the path of the circuit.
3. Before measuring the resistance of any circuit, first measure the resistance between the two leads of the DVOM. Note:  The meter leads can add resistance to the measurement value.
4. Connect one lead of the DVOM to the circuit being tested at the component harness connector.
5. Connect the other lead to the circuit being tested at the GPEC Adaptor and measure the resistance of the circuit.

1. If it is necessary to probe a terminal at a PCM harness connector, connect the special tool # 10436, (GPEC Diagnostic Adapter) to the appropriate PCM harness connector.
   NOTE:

   The GPEC Diagnostic Adaptor can add up to 1.5 Ohms of resistance to the circuit.

   Is the resistance below 3.0 Ohms?

   Yes 

   • Go To  10

   No 

   • Repair the circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition off.
2. Remove the CMP Sensor.
3. Visually inspect the sensor mounting location for damage, foreign material.
4. Manually rotate the engine and if possible inspect the target wheel for any signs of damage.

   Were any problems found?

   Yes 

   • Repair Issues in mounting location. Repair or replace the Tone Wheel / Pulse Ring as necessary. With the scan tool, perform the "Cam/Crank Relearn" Procedure. The "Cam/Crank Relearn" Procedure  must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP sensor, flywheel, valvetrain, timing chain or gears. Failure to do so can cause a misfire fault to set.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  11

1. Using the appropriate SYSTEM WIRING DIAGRAM/schematic as a guide, inspect the wiring and connectors between the Camshaft Position 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.
   1. Turn the ignition off.
   2. Replace the component in accordance with the Service Information. Refer to ENGINE SENSORS, REMOVAL AND INSTALLATION . With the scan tool, perform the "Cam/Crank Relearn" Procedure. The "Cam/Crank Relearn" Procedure  must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP sensor, flywheel, valvetrain, timing chain or gears. Failure to do so can cause a misfire fault to set.
   3. Connect the component and Electronic Control Unit (ECU) harness connectors.
   4. Turn the ignition on.
   5. With the scan tool, erase all DTCs.
   6. Turn the ignition off for a minimum of 10.0 seconds.
   7. Turn the ignition on.
   8. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
   9. With the scan tool, read DTCs.

   Did the DTC return?

   Yes 

   • Go To  12

   No 

   • Replacing the faulty component repaired the fault.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Turn the ignition off.
2. Replace the Camshaft Assembly in accordance with the Service Information. With the scan tool, perform the "Cam/Crank Relearn" Procedure. Refer to 2.0L CAMSHAFT, ENGINE, REMOVAL AND INSTALLATION . The "Cam/Crank Relearn" Procedure  must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP sensor, flywheel, valvetrain, timing chain or gears. Failure to do so can cause a misfire fault to set.
3. Connect the component and Electronic Control Unit (ECU) harness connectors.
4. Turn the ignition on.
5. With the scan tool, erase all DTCs.
6. Turn the ignition off for a minimum of 10.0 seconds.
7. Turn the ignition on.
8. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
9. With the scan tool, read DTCs.

Did the DTC return?

Yes 

• Go To  16

No 

• Replacing the faulty component repaired the fault.
• Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. The ignition must be off when checking a circuit for continuity to ground.
2. Isolate the circuit by disconnecting the Electronic Control Unit (ECU) and every component harness connector containing the circuit being tested. Note:  Use the appropriate SYSTEM WIRING DIAGRAM as a guide to follow the path of the circuit.
3. Connect the negative lead of the DVOM to a known good ground.
4. With the positive lead of the DVOM, probe the circuit being tested at the component harness connector and check for continuity between the circuit and ground.

1. If it is necessary to probe a terminal at a PCM harness connector, connect the special tool # 10436, (GPEC Diagnostic Adapter) to the appropriate PCM harness connector.
   NOTE:

   There should be no continuity between ground and the circuit being tested.

   Is there continuity between ground and the circuit being tested?

   Yes 

   • Repair the circuit for a short to ground. Use the appropriate SYSTEM WIRING DIAGRAM as a guide to trace the circuit and look for any in-line connectors to help isolate the location of the short.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  14

1. The ignition must be off when checking for a short between circuits.
2. Isolate the circuit by disconnecting the Electronic Control Unit (ECU) and every component harness connector containing the circuit being tested. Note:  Use the appropriate SYSTEM WIRING DIAGRAM as a guide to follow the path of the circuit.
3. Connect the test leads of the DVOM and check for continuity between the circuits being tested at the component harness connector.

1. If it is necessary to probe a terminal at a PCM harness connector, connect the special tool # 10436, (GPEC Diagnostic Adapter) to the appropriate PCM harness connector.
   NOTE:

   There should be no continuity between the circuits being tested.

   Is there continuity between the circuits?

   Yes 

   • Repair the short between the circuits.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

   No 

   • Go To  15

1. The ignition must be off when checking the continuity of a circuit.
2. Isolate the circuit by disconnecting the Electronic Control Unit (ECU) and the component harness connector containing the circuit being tested. Note:  Use the appropriate SYSTEM WIRING DIAGRAM as a guide to follow the path of the circuit.
3. Before measuring the resistance of any circuit, first measure the resistance between the two leads of the DVOM. Note:  The meter leads can add resistance to the measurement value.
4. Connect one lead of the DVOM to the circuit being tested at the component harness connector.
5. Connect the other lead to the circuit being tested at the GPEC Adaptor and measure the resistance of the circuit.

1. If it is necessary to probe a terminal at a PCM harness connector, connect the special tool # 10436, (GPEC Diagnostic Adapter) to the appropriate PCM harness connector.
   NOTE:

   The GPEC Diagnostic Adaptor can add up to 1.5 Ohms of resistance to the circuit.

   Is the resistance below 3.0 Ohms?

   Yes 

   • Go To  16

   No 

   • Repair the circuit for an open or high resistance.
   • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

1. Conduct any Service Bulletins that apply.
2. Disconnect all PCM harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
   • Proper connector installation.
   • Damaged connector locks.
   • Corrosion.
   • Other signs of water intrusion.
   • Weather seal damage (if equipped).
   • Bent terminals.
   • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
   • Terminals that have been pushed back into the connector cavity.
   • Check for spread terminals and verify proper terminal tension.

   Repair any conditions that are found.

6. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
11. With the scan tool, read DTCs.

    Did the DTC return?

    Yes 

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

    No 

    • The wiring or poor connection problem has been repaired.
    • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .