The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The ECM supplies a low reference circuit, and a pulse width modulated (PWM) control circuit to the CMP actuator solenoid. The ECM controls the CMP actuator solenoid duty cycle by controlling the amount of solenoid ON time. The CMP actuator solenoid controls the advance or the retard of each camshaft. The CMP actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.

The ECM controls the solenoid with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.

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 seconds.

DTCs P0010 and P0013 are Type B DTCs.

DTCs P0010 and P0013 are Type B DTCs.

If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool CMP solenoid circuit status parameters. The circuit status parameters will change from OK, or Not Run, to Fault if there is a condition with the circuit or connection.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Camshaft Actuator System Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, command the appropriate CMP Actuator ON and OFF with a scan tool. You should hear the solenoid click when commanded ON and OFF.
2. Engine idling, observe the following scan tool control circuit status parameters:

•	CMP Sol Ckt Short Gnd Test Status

•	CMP Sol Ckt Open Test Status

•	CMP Sol Ckt Short Volts Test Status

•	Each parameter should display OK or Not Run.

3. 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.

1. Ignition OFF for 1 minute, disconnect the harness connector at the appropriate camshaft position (CMP) actuator solenoid.
2. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

3. Ignition ON, test for 2-3 V between the control circuit terminal 1 and ground.

⇒	If less than the specified range, test the control circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the ECM.

⇒	If greater than the specified range, test the control circuit for a short to voltage. If the circuit/connections test normal, replace the ECM.

4. Command the CMP actuator solenoid ON and OFF with a scan tool. The DMM should transition from 2-3 V when commanded OFF to greater than 10 V, when commanded ON.

⇒	If the circuit voltage does not correspond to the specified values, replace the ECM.

5. If all circuits/connections test normal, test or replace the CMP actuator solenoid.

1. Ignition OFF, disconnect the harness connector at the appropriate CMP actuator solenoid.
2. Test for 7-12 Ω between the terminals of the CMP actuator solenoid.

⇒	If not within the specified range, replace the CMP actuator solenoid.

3. Test for infinite resistance between each terminal and the CMP actuator solenoid housing.

⇒	If not the specified value, replace the CMP actuator solenoid valve.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.