P0011
DTC P0011 or P0014 (LUW)
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 Descriptors
DTC P0011
- Intake Camshaft Position System Performance
DTC P0014
- Exhaust Camshaft Position System Performance
Circuit/System Description
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 camshaft position actuator solenoid valves are operated hydraulically in order to change the angle of the camshaft relative to crankshaft position. The camshaft position actuator solenoid valves are controlled by the engine control module (ECM). The ECM sends a pulse width modulated signal to the camshaft position actuator solenoid valves. The camshaft position actuator solenoid valves control the amount of engine oil flow that applies the pressure to advance or retard the camshafts.
Conditions for Running the DTC
* DTC P0010, P0013, P0016, P0017, P0335, P0340, P0341, P0365, or P0366 is not set.
* The engine is running.
* The ignition voltage is between 11-32 V.
* The camshaft position actuator is enabled.
* The rate of change in the camshaft position is less than 3° for 4 s.
* DTCs P0011 and P0014 runs continuously once the above conditions are met for greater than 0.1 s.
Conditions for Setting the DTC
The ECM detects a difference between the camshaft position angle and the desired camshaft position angle is greater than 6 to 10° based on engine coolant temperature and engine speed.
Action Taken When the DTC Sets
DTCs P0011 and P0014 are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0011 and P0014 are Type B DTCs.
Diagnostic Aids
* The engine oil condition has a major impact on the camshaft actuator system.
* A low oil level condition may set this DTC. The engine may require an oil change. Inquire with the customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life Remaining parameter. Advise the customer an oil change may be required.
* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing belt can cause this DTC to set.
* A resistance greater than 8 ohms on the camshaft position actuator solenoid valve control circuit may set this DTC. If you suspect high resistance, ground the control circuit while the engine is idling. The scan tool Intake or Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status should display Malfunction. If the parameter displays OK, test the control circuit for high resistance.
Reference Information
Schematic Reference
Engine Controls Schematics [1][2]Electrical Diagrams
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
Camshaft Actuator System Description Description and Operation
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
1. Ignition ON, observe the scan tool DTC information. Verify that DTC P0010, P0013, P0016, P0017, P0335, P0340, P0341, P0365, or P0366 is not set.
• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
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.
* The engine oil condition has a major impact on the camshaft actuator system. Debris in the oil can interfere with the camshaft position actuator solenoid and the mechanical camshaft actuator operation. Inspect for dirty or degraded crankcase oil. The engine may require an oil change. Inquire with the customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life Remaining parameter. Advise the customer an oil change may be required.
2. Verify the correct engine oil pressure. Refer to Oil Pressure Diagnosis and Testing Oil Pressure Diagnosis and Testing
3. Engine idling at operating temperature, command the appropriate Intake/Exhaust Camshaft Position Actuator to 20° with a scan tool. The Desired Camshaft Position parameter should match the Camshaft Position angle parameter.
Note: If there is no condition with the camshaft position actuator, the engine may stall when commanding the actuator to 20 degrees.
4. Engine idling, command the appropriate camshaft position actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool Intake/Exhaust Camshaft Position Variance parameters. The Intake/Exhaust Camshaft Position Variance should be less than 2 degrees in each of the commanded states.
5. 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
Note: You must complete the circuit/system verification before proceeding with circuit/system testing.
1. Ignition OFF, all vehicles systems OFF. It may take up to 2 min for all vehicle systems to power down. Disconnect the harness connector at the appropriate Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust.
2. Test for less than 5 ohms 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 2-3 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 Camshaft Position Actuator Solenoid Valve 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 K20 Engine Control Module.
5. Remove the Q6 Camshaft Position Actuator Solenoid Valve. Inspect the Camshaft Position Actuator Solenoid Valve and mounting area for the following conditions:
* For a torn, restricted, incorrect 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
* For oil seepage at the Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid connector
• If a condition is found, replace the appropriate Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust solenoid.
Note: This step is testing the mechanical operation of the camshaft position actuator solenoid valve that set the DTC.
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.
7. Engine idling, command the Intake Camshaft Position Actuator or Exhaust Camshaft Position Actuator to 20° and back to 0° while observing the appropriate scan tool Intake Camshaft Position Variance or Exhaust Camshaft Position Variance value parameter. The Intake 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.
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.
Component Testing
1. Ignition OFF, disconnect the harness connector at the appropriate Q6F Camshaft Position Actuator Solenoid Valve - Intake or Q6E Camshaft Position Actuator Solenoid Valve - Exhaust.
2. Test for 7-12 ohms between the two 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.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Camshaft Position Actuator Solenoid Valve Replacement Camshaft Position Actuator Solenoid Valve Replacement
* Camshaft Sprocket Replacement Service and Repair
* Control Module References Control Module References for ECM replacement, programming and setup