• | 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 | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Intake CMP Actuator Solenoid Control | P0010 | P0010 | P0010 | P0011 |
Intake CMP Actuator Low Reference | -- | P0010 | -- | -- |
Exhaust CMP Actuator Solenoid Control | P0013 | P0013 | P0013 | P0014 |
Exhaust CMP Actuator Low Reference | -- | P0013 | -- | -- |
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.
The engine is running.
• | 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. |
DTCs P0011 and P0014 are Type B DTCs.
DTCs P0011 and P0014 are Type B DTCs.
Control Module References for scan tool information
⇒ | 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. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for replacement, setup, and programming |