P0014
DTC P0010, P0011, P0013, or P0014
Diagnostic Instructions
- Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic approach.
- Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC P0010: Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit
DTC P0011: Intake Camshaft Position (CMP) System Performance
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 actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is operating. The camshaft position actuator solenoid valve signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position actuator solenoid valve duty cycle by controlling the amount of solenoid valve ON time. The camshaft position actuator solenoid valve controls the advance or the retard of each camshaft. The camshaft position actuator solenoid valve controls the oil flow that applies the pressure to advance or retard the camshafts.
The ECM controls the camshaft position actuator solenoid valve by suppling a 12 V pulse width modulated (PWM) signal. The ECM supplies a ground to the low reference circuit.
Conditions for Running the DTC
P0010 and P0013
- The ignition voltage is between 11-18 V.
- The ECM has commanded the camshaft position actuator solenoid valve ON.
- The ignition switch is in the Crank or Run position.
- DTC P0010 and P0013 run continuously when the above conditions are met.
P0011 and P0014
- DTC P0010, P0013, P0016, P0017, P0335, P0336, P0340, P0341, P0365, or P0366 is not set.
- The engine is running.
- The camshaft position actuator solenoid valve is ON.
- The desired camshaft position is greater than 0 degrees.
- The desired camshaft position is not changing greater than 3 degrees for at least 3 s.
- The ignition voltage is between 11-18 V.
- DTC P0011 and P0014 run continuously when the above conditions are met.
Conditions for Setting the DTC
P0010 and P0013
The ECM detects the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s
P0011 and P0014
The difference between the desired CMP actuator angle and the actual CMP actuator angle is greater than 6 degrees for greater than 13.5 s.
Action Taken When the DTC Sets
DTCs P0010, P0011, P0013, and P0014 are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0010, P0011, P0013, and P0014 are Type B DTCs.
Diagnostic Aids
- The engine oil condition has a major impact on the camshaft actuator system.
- A low oil level condition may set this DTC. The engine may require an oil change. Inquire with the customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life Remaining parameter. Advise the customer an oil change may be required.
- Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing chain can cause a DTC to set.
Circuit/System Verification
Note:
- The engine oil level and the oil pressure are critical to the correct operation of the camshaft position actuator system. Verify that the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic.
- The engine oil condition has a major impact on the camshaft actuator system. Debris in the oil can interfere with the camshaft position actuator solenoid and the mechanical camshaft actuator operation. Inspect for dirty or degraded crankcase oil. The engine may require an oil change. Inquire with the customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life Remaining parameter. Advise the customer an oil change may be required.
1. Verify the engine has the correct oil pressure.
Note: If a crankshaft or camshaft position sensor DTC is set, the Camshaft Position Actuator output control will not function.
2. Ignition ON, observe the scan tool DTC information. Verify that DTC P0016, P0017, P0335, P0336, P0340, P0341, P0365, or P0366 is not set.
- If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
3. Engine at normal operating temperature, raise the engine speed to 2,000 RPM for 10 s. DTC P0010 or P0013 should not set.
4. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states.
5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate camshaft position actuator solenoid valve.
2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 between the low reference circuit terminal B and ground.
- If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
Note: A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage, a voltage on the control circuit is normal.
3. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal A and ground.
- If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Connect the DMM black lead to the control circuit terminal A. Connect the DMM red lead to B+. Set the DMM on the diode setting. Command the CMP actuator solenoid ON and OFF with a scan tool. The DMM should transition from 1-4 V when commanded OFF to less than 1 V when commanded ON.
- If the circuit voltage does not correspond to the specified values, test the control circuit for an open/high resistance or a short to ground. If the circuit tests normal, replace the ECM.
5. Remove the camshaft position actuator solenoid valve. Verify the following conditions do not exist with the camshaft position actuator solenoid valve:
- Torn, restricted, mis-positioned, or missing screens at the CMP actuator solenoid
- Engine oil leak between the oil sealing lands of the CMP actuator solenoid. Inspect the lands of the CMP actuator solenoid for nicks.
- Oil seepage at the CMP actuator solenoid connector
- If a condition is found, replace camshaft position actuator solenoid valve.
6. Ignition OFF, swap the appropriate camshaft position actuator solenoid valve with a camshaft position actuator solenoid valve that is operating correctly.
7. Engine idling. Command the appropriate Camshaft Position Actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states.
- If greater than the specified value, replace the mechanical camshaft position actuator.
8. If all circuits/connections test normal, test or replace the camshaft position actuator solenoid valve.
Component Testing
1. Ignition OFF, disconnect the harness connector at the camshaft position actuator solenoid valve.
2. Test for 8-12 between the control terminal A and the low reference circuit terminal B of the camshaft position actuator solenoid valve.
- If not within the specified range, replace the camshaft position actuator solenoid valve.
3. Test for infinite resistance between each terminal and the camshaft position actuator solenoid valve housing.
- If not the specified value, replace the camshaft position actuator solenoid valve.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Camshaft Position Actuator Solenoid Valve Replacement
- Camshaft Position Exhaust Actuator Replacement
- Camshaft Position Intake Actuator Replacement
- Control Module References for replacement, programming, and setup