Cruze

DTC P0011 or P0014

The camshaft position actuator solenoid valve - inlet and camshaft position actuator solenoid valve - exhaust are attached to each camshaft and is operated hydraulically in order to change the angle of the camshaft relative to crankshaft position. The camshaft position actuator solenoid valve - inlet and camshaft position actuator solenoid valve - exhaust are controlled by the engine control module (ECM). The ECM sends a pulse width modulated signal to a camshaft position actuator solenoid valve - inlet and camshaft position actuator solenoid valve - exhaust solenoids. The camshaft position actuator solenoid valve - inlet and camshaft position actuator solenoid valve - exhaust solenoids controls the amount of engine oil flow to a camshaft position actuator solenoid valve - inlet and camshaft position actuator solenoid valve - exhaust. The camshaft position actuator solenoid valve - inlet and camshaft position actuator solenoid valve - exhaust can change the camshaft angle by a maximum of 20°. The ECM increases the pulse width to accomplish the desired camshaft operation.

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 a difference of greater than 8° between the camshaft position angle position and the desired camshaft position for greater than 30 s.

DTCs P0011 00 and P0014 00 are Type B DTCs.

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

Note: The engine oil level and the oil pressure are critical to the correct operation of the camshaft position actuator system. Verify that the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic, see engine mechanical specifications.

1. Engine idling at operating temperature, command the appropriate Inlet Camshaft Position Actuator or Exhaust Camshaft Position Actuator to 20° with a scan tool. The Desired Intake Camshaft Position or Desired Exhaust Camshaft Position parameter value should match the Intake Camshaft Position or Exhaust Camshaft Position angle parameter value.
2. Observe the Inlet Camshaft Position Variance or Exhaust Camshaft Position Variance value on the scan tool. The Inlet Camshaft Position Variance or Exhaust Camshaft Position Variance value will increment for several seconds until the Inlet Camshaft Position or Exhaust Camshaft Position angle value matches the Desired Inlet Camshaft Position or Desired Exhaust Camshaft Position value. The Inlet Camshaft Position Variance or Exhaust Camshaft Position Variance value should then return to 0°.
3. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Ignition OFF for 1 min, disconnect the harness connector at the appropriate Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.
2. Test for less than 5 Ω between the low reference circuit terminal 1 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 K20 Engine Control Module.

3. Ignition ON, test for 12 V between the control circuit terminal 2 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 K20 Engine Control Module.

⇒	If greater than the specified range, test the control circuit for a short to voltage. If the circuit/connections test normal, replace the K20 Engine Control Module.

4. Command the appropriate Intake Camshaft Position Actuator Solenoid Valve or Exhaust Camshaft Position Actuator Solenoid Valve solenoid ON and OFF with a scan tool. The DMM should transition from 12 V when commanded OFF to smaller than 10 V when commanded ON.

⇒	If the circuit voltage does not correspond to the specified values, replace the K20 Engine Control Module.

5. Remove the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid. Inspect the appropriate camshaft position actuator solenoid valve and mounting area for the following conditions:

•	For torn, restricted, mis-positioned, or missing screens at the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust

•

For engine oil leaks between the oil sealing lands of the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid, inspect the lands of the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid for nicks

•	Remove the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.

⇒	If a condition is found, replace the appropriate Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.

6. Ignition OFF, swap the suspected Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid with a Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust actuator solenoid that is operating correctly.

Note: This step is testing the mechanical operation of the camshaft position actuator solenoid valve that set the DTC.

7. Engine idling, command the appropriate Inlet Camshaft Position Actuator or Exhaust Camshaft Position Actuator to 20° and back to 0° while observing the appropriate scan tool Inlet Camshaft Position Variance or Exhaust Camshaft Position Variance value parameter. The Inlet Camshaft Position Variance or Exhaust Camshaft Position Variance value should be less than 2° in each of the commanded states.

⇒	If greater than the specified value, replace or repair the mechanical camshaft position actuator operation.

8. If all circuits/connections test normal, test or replace the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust.

Static Test

1. Ignition OFF, disconnect the harness connector at the appropriate Q6F Camshaft Position Actuator Solenoid Valve - Inlet or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust.
2. Test for 7-12 Ω between the terminals of the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.

⇒	If not within the specified range, replace the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.

3. Test for infinite resistance between each terminal and the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust housing.

⇒	If not the specified value, replace the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.