P0014
DTC P0013 or P0014
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P0013
- Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit
DTC P0014
- Exhaust Camshaft Position (CMP) System Performance
Diagnostic Fault Information
Circuit/System Description
The camshaft position (CMP) actuator is attached to each camshaft and is hydraulically operated in order to change the angle of the camshaft relative to crankshaft position (CKP). The CMP actuator solenoid is controlled by the control module. The control module sends a pulse width modulated 12-volt signal to a CMP actuator solenoid. The solenoid controls the amount of engine oil flow to a CMP actuator. The CMP actuator can change the camshaft angle a maximum of 25 degrees. The control module increases the pulse width to accomplish the desired camshaft operation.
Conditions for Running the DTC
P0013
The engine is running.
P0014
* The engine speed is more than 1,350 RPM.
* The engine control module (ECM) has enabled the CMP actuator.
* The system voltage is more than 11 volts.
* DTC P0014 runs continuously when the above conditions are met.
Conditions for Setting the DTC
P0013
The ECM detects an open, short to ground, or a short to voltage on the control circuit or an open on the ignition voltage circuit for more than 0.25 second.
P0011
* The control module has enabled the CMP actuator.
* The difference between the desired CMP actuator angle and the actual CMP actuator angle is more than 6 degrees.
* The CMP actuator is steady for 3 seconds.
* The condition is present for 13.5 seconds.
Action Taken When the DTC Sets
DTC P0013 and P0014 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTC P0013 and P0014 are Type B DTCs.
Circuit/System Verification
Important: The supply of clean pressurized engine oil to the CMP actuator is essential to CMP actuator performance.
1. Observe the engine oil level. The engine oil level should be within operating range. Refer to Approximate Fluid Capacities.
2. Ensure that the vehicle has the correct engine oil and is not old, burnt or contains additives. Refer to Checking Things Under the Hood in Service and Appearance Care within the Owner's Manual.
• If the vehicle has the incorrect engine oil, is old, burnt, or contains additives, change the oil and filter.
3. Test the engine oil pressure for correct operation.
4. Allow the engine to reach operating temperature.
5. Set the parking brake and place the vehicle in Park for automatic, or Neutral for manual.
6. Observe the CMP variance parameter. The CMP variance will rise for 1-2 seconds until the CMP Angle parameter matches the desired CMP parameter. The CMP variance should again return to 0 degrees.
Important: The engine will run rough and may require throttle input to keep running.
7. Command the CMP actuator to 24 degrees. The desired CMP parameter should match the CMP Angle parameter.
Circuit/System Testing
1. Ignition ON, measure for battery voltage between the CMP actuator solenoid ignition voltage and ground.
• If less than battery voltage, test the CMP actuator solenoid ignition voltage circuit for an open, short to ground. If the circuit tests normal, replace the control module.
2. Connect a test lamp between the CMP actuator solenoid control circuit and a battery voltage. The test lamp should not illuminate.
• If the test lamp illuminates, test the CMP actuator solenoid control circuit for a short to voltage. If the circuit tests normal, replace the control module.
3. Command each CMP actuator solenoid between 0-50 percent. The test lamp should turn ON and OFF.
• If the test lamp does not turn ON and OFF, test the CMP actuator solenoid ignition voltage circuit for high resistance. If the circuit tests normal, replace the control module.
4. Connect a test lamp between the ignition voltage circuit of the CMP actuator solenoid and ground. The test lamp should illuminate.
• If the test lamp does not illuminate, test the ignition voltage circuit for an open, high resistance.
5. Determine that the vehicle has the correct engine oil. Refer to Service and Appearance Care in the owners manual.
• If the engine oil life system monitor displays the Change Oil Soon message, the engine oil is more than one year old, contains additives, or is not the correct viscosity. Change the oil.
6. Inspect each CMP actuator solenoid valve assembly for the following:
* Torn screens
* Debris on the screens
* Debris clogging the oil ports
* Missing screens
* Oil seepage at the solenoid connector pins
7. Inspect for the following conditions:
* Excessive timing chain play
* Proper installation of the CMP actuator assembly
8. If all circuits test normal, test or replace the CMP actuator solenoid.
Component Testing
1. Measure the resistance of each CMP actuator solenoid valve assembly. Resistance should be between 8-15 ohms.
2. Connect a jumper wire between the CMP actuator solenoid control circuit at the solenoid and a good ground. Connect a fused jumper wire to the CMP actuator solenoid ignition voltage circuit at the solenoid. Momentarily touch the fused jumper to B+. Observe the spool valve inside the CMP actuator. The spool valve should move from fully closed to fully opened position.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests
* Refer to Programming and Relearning for setup and programming. Programming and Relearning
* Camshaft Position Sensor Replacement - Exhaust