• | 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 |
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
---|---|---|---|---|---|
CMP Actuator Solenoid High Control | P0010 | P0010 | P0010 | P0010 | P0011 |
CMP Actuator Solenoid Low Reference | -- | P0010 | P0010 | -- | -- |
The camshaft position (CMP) actuator is attached to the 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 engine control module (ECM). The ECM sends a pulse width modulated 12-volt signal to a CMP actuator solenoid. The solenoid controls the amount of engine oil flow to the CMP actuator by extending a pintle within the solenoid. The pintle acts against a spool valve in the CMP actuator mechanism which is attached to the front of the camshaft. As the spool valve is moved, oil is directed to the CMP actuator, which rotates the camshaft. The CMP actuator can change the cam angle a maximum of 27 degrees.
• | DTC P0010, P0016, P0335, P0336, P0340, or P0341 are not set. |
• | The system voltage is between 11-18 volts. |
• | The engine is running. |
• | The engine control module (ECM) has enabled the CMP actuator and commanded greater than 0 degrees. |
• | DTC P0011 runs continuously when the above conditions are met. |
DTC P0011 is a Type B DTC.
The CMP actuator is commanded to the home or parked position.
DTC P0011 is a Type B DTC.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
Important: The supply of clean pressurized engine oil to the CMP actuator is essential to CMP actuator performance.
⇒ | If the vehicle has the incorrect engine oil, is old, burnt, or contains additives then change the oil and filter. |
Important: The engine will run rough and may require throttle input to keep running.
Important: You must complete the Circuit/System Verification before proceeding with Circuit/System Testing.
⇒ | If greater than the specified range, test the low reference circuit for an open/high resistance. |
⇒ | If the test lamp illuminates, test the control circuit for short to voltage. If the circuit tests normal, replace the ECM. |
⇒ | If not the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the ECM. |
⇒ | If not the specified value, test the control circuit for an open/high resistance. If the circuit tests normal, replace the ECM. |
⇒ | 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. |
⇒ | If the oil pressure is low, correct the low pressure first. |
• | Torn screens |
• | Debris on the screens |
• | Debris clogging the oil ports |
• | Missing screens |
• | Oil seepage at the solenoid connector pins |
⇒ | If movement is not observed, replace the CMP actuator solenoid. |
Important: Ensure that the component is tested at 20°C (68°F).
⇒ | If the resistance is not within the specified range, replace the CMP actuator solenoid. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM replacement, setup, and programming |
• | Camshaft Timing Chain and Sprocket Replacement for timing chain, sprockets, CMP actuator filter screen, and CMP actuator replacement |