P0014
DTC P0014Circuit Description
The camshaft position (CMP) actuator system is comprised of four CMP actuator solenoids, four oil control valves, and four CMP actuators. The engine control module (ECM) sends an electrical signal to the CMP actuator solenoids through the control circuits when a camshaft timing change is desired. The ground circuits of the CMP actuator solenoids are used as a return. The CMP actuator solenoid uses electromagnetic force to pull on the plunger of the oil control valve. The oil control valve will port the pressurized engine oil to either the advancing or retarding chambers of the CMP actuator. The CMP actuator, in turn, changes the camshaft position relative to the crankshaft position.
CMP Actuator Authority Table
If the desired camshaft position does not match the actual camshaft position for a calibrated amount of time, DTC P0011, P0014, P0021 or P0024 will set.
Conditions for Running the DTC
^ DTCs P0010, P0011, P0013, P0014, P0016, P0017, P0018, P0019, P0020, P0021, P0023, P0024, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P2088, P2089, P2090, P2091, P2092, P2093, P2094, P2095 are not set.
^ The CMP actuators are commanded.
^ The engine oil pressure is between 100-696.4 kPa (14.5-101 psi).
^ The engine speed is at an RPM, between 1,000-6,500 RPM, that will allow for steady activation of the cam actuators based on calculated engine oil temperature.
^ The calculated engine oil temperature is between -10 to +150�C (14-302�F)
^ The ignition voltage is between 11-16 volts.
Conditions for Setting the DTC
^ The ECM detects the difference between the desired camshaft position and the actual camshaft position angles is more than 6 degrees.
^ The above condition exists for more than 16 seconds.
Action Taken When the DTC Sets
^ The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
^ The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.
The CMP actuator system will be disabled until the end of the ignition cycle.
Conditions for Clearing the MIL/DTC
^ The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
^ A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
^ Clear the MIL and the DTC with a scan tool.
