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 CircuitDTC 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 | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
Intake CMP Actuator Solenoid Control | P0010 | P0010 | P0010 | P0010 | P0011 |
Intake CMP Actuator Low Reference | -- | P0010 | P0010 | -- | -- |
Exhaust CMP Actuator Solenoid Control | P0013 | P0013 | P0013 | P0013 | P0014 |
Exhaust CMP Actuator Low Reference | -- | P0013 | P0013 | -- | -- |
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
P0010 and P0013
The engine is running.
P0011 and 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 P0011 and P0014 run continuously when the above conditions are met. |
Conditions for Setting the DTC
P0010 and P0013
The ECM detects an open, short to ground, or a short to voltage on the high control circuit or an open on the low reference circuit for more than 0.25 second.
P0011 and P0014
| • | 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 P0010, P0011, P0013, and P0014 are Type A DTCs.
Conditions for Clearing the MIL/DTC
DTC P0010, P0011, P0013, and P0014 are Type A DTCs.
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Circuit/System Verification
- Ensure the vehicle has the proper oil viscosity.
- Observe the engine oil level. The engine oil level should be within the operating range.
- Allow the engine to reach operating temperature.
- Increase the engine speed to 1,500 RPM.
- Command each CMP actuator to 25 percent. The CMP actuator angle desired parameter should match the CMP actuator actual parameter.
Circuit/System Testing
- With the ignition ON, measure for battery voltage between the CMP actuator solenoid high control of the affected actuator and a ground.
- Connect a test lamp between the CMP actuator solenoid high control of the affected actuator and a good ground. The test lamp should not illuminate.
- Command each CMP actuator solenoid between 0-50 percent. The test lamp should turn ON and OFF.
- Connect a test lamp between the low reference circuit of the CMP actuator solenoid of the affected actuator and battery voltage. The test lamp should illuminate.
- Determine that the vehicle has the correct engine oil. Refer to Service and Appearance Care in the owner's manual.
- Test the engine oil pressure. Refer to Oil Pressure Diagnosis and Testing .
- Inspect each CMP actuator solenoid valve assembly for the following:
- Inspect for the following conditions:
| ⇒ | If less than battery voltage, test the CMP actuator high control circuit for an open, short to ground. If the circuit tests normal, replace the control module. |
| ⇒ | If the test lamp illuminates, test the CMP actuator high control circuit for a short to voltage. If the circuit tests normal, replace the control module. |
| ⇒ | If the test lamp does not turn ON and OFF, test the CMP actuator high control circuit for high resistance. If the circuit tests normal, replace the control module. |
| ⇒ | If the test lamp does not illuminate, test the low reference circuit for an open, high resistance. If the circuit tests normal, replace the control module. |
| ⇒ | 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 |
| • | Excessive timing chain play |
| • | Proper installation of the CMP actuator assembly |
Component Testing
- Measure the resistance of each CMP actuator solenoid valve assembly. Resistance should be between 8-12 ohms.
- Connect a jumper wire between the CMP actuator low reference circuit at the solenoid and a good ground. Connect a fused jumper wire to the CMP actuator high control 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.
Control Module References for replacement, setup, and programming
