P0010
DTC P0010
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.
DTC Descriptor
DTC P0010
- Camshaft Position (CMP) Actuator Solenoid Control Circuit
Diagnostic Fault Information
Circuit/System Description
The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshaft while the engine is operating. The ECM controls the camshaft position actuator magnet duty cycle by controlling the amount of ON time. The magnet 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 ECM can only command the camshaft position actuator to retard the valve timing from the camshaft park position, or advance the valve timing back to the park position. The total range of valve timing command is 26 degree as measured at the camshaft or 52 degree as measured at the crankshaft.
The ECM controls the camshaft position actuator magnet by supplying a 12 V pulse width modulated (PWM) signal. The ECM supplies a ground to the low reference circuit.
Conditions for Running the DTC
* The ignition switch is in the crank or run position.
* The system voltage is between 11-32 V.
* The CMP actuator is command ON.
* DTC P0010 runs continuously when the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.
Action Taken When the DTC Sets
* DTC P0010 is a Type B DTC.
* The camshaft position actuator is commanded to the park position.
Conditions for Clearing the DTC
DTC P0010 is a Type B DTC.
Reference Information
Schematic Reference
Engine Controls Schematics (except L96) ([1][2]Electrical Diagrams)Engine Controls Schematics (L96) ([1][2]Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
Description and Operation
Camshaft Actuator System Description (Camshaft Actuator System)
Electrical Information Reference
* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference
Control Module References (Control Module References) for scan tool information
Circuit/System Verification
Note: If a crankshaft or camshaft position sensor DTC is set, the CMP Actuator output control will not function.
1. Ignition ON, observe the DTC information with a scan tool. Verify DTC P0335, P0336, P0340, or P0341 is not set.
• If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle) for further diagnosis.
2. Verify the CMP Sol Ckt Test Status parameters listed below display OK or Not Run:
* CMP Sol Ckt Open Test Status
* CMP Sol Ckt Short To Grd Test Status
* CMP Sol Ckt Short Volts Test Status
3. Engine idling, verify the CMP Sol Ckt Test Status parameters listed below display OK or Not Run:
* CMP Sol Ckt Open Test Status
* CMP Sol Ckt Short To Grd Test Status
* CMP Sol Ckt Short Volts Test Status
4. 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 engine harness to camshaft position sensor jumper harness connector. Refer to Inline Harness Connector End Views (Connector End Views By Number) for connector identification.
Note: A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage. The current is too low to illuminate a test lamp. A voltage on the control circuit is normal.
2. Ignition ON, engine OFF, verify that a test lamp does not illuminate between the control circuit terminal D and ground.
• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.
Note: Testing for steps 2-4 is performed on the ECM side of the engine harness to camshaft position sensor jumper harness connector.
3. 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 ohm between the low reference circuit terminal E 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.
4. Connect the DMM negative lead to the control circuit terminal D. Connect the DMM positive 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 OL 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.
Note: Testing for steps 5 and 6 is performed on the engine side of the engine harness to camshaft position sensor jumper harness connector.
5. Ignition OFF, test for infinite resistance between the control circuit terminal D and ground.
• If not the specified value, repair the control circuit for a short to ground.
6. Test for 5.0-9.0 ohm between the control circuit terminal D and the low reference circuit terminal E.
• If less than the specified range, test for a short between the control circuit and the low reference circuit. If the circuits/connections test normal, test or replace the Camshaft Position Actuator Magnet.
• If greater than the specified range, test the control circuit and the low reference for an open/high resistance. If the circuits/connections test normal, test or replace the Camshaft Position Actuator Magnet.
7. If all circuits test normal, repair the poor connection at the camshaft position sensor jumper wire harness.
Component Testing
Static Test
1. Ignition OFF, remove the Camshaft Position Actuator Magnet.
2. Test for 5.0-9.0 ohm between the solenoid control terminal 2 and the low reference terminal 1 at the Camshaft Position Actuator Magnet.
• If not within the specified range, replace the Camshaft Position Actuator Magnet.
3. Test for infinite resistance between each terminal of the magnet and the magnet housing.
• If not the specified value, replace the Camshaft Position Actuator Magnet.
Dynamic Test
1. Remove the Camshaft Position Actuator Magnet.
Note:
* The camshaft position actuator magnet pintle should be facing downward for this test.
* Do not allow electrical current to flow through the Camshaft Position Actuator Magnet for greater than 1-2 s.
2. Install a 20 A fused jumper wire between the control circuit terminal 2 and B+. Momentarily install a jumper wire between the low reference terminal 1 and ground. The pintle should extend.
• If the function does not perform as specified, replace the Camshaft Position Actuator Magnet.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.
* Camshaft Position Actuator Magnet Replacement (Camshaft Position Actuator Magnet Replacement)
* Control Module References (Control Module References) for Engine Control Module replacement, programming, and setup