P0014

DTC P000A, P000B, P0011, or P0014

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 P000A
- Intake Camshaft Position (CMP) System Slow Response

DTC P000B
- Exhaust Camshaft Position (CMP) System Slow Response

DTC P0011
- Intake Camshaft Position (CMP) System Performance

DTC P0014
- Exhaust Camshaft Position (CMP) 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 CMP actuator solenoid signal from the ECM is pulse width modulated (PWM). 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.

Conditions for Running the DTC

* Before the ECM can report DTC P000A, P000B, P0011, or P0014 failed, DTCs P0010, P0013, P0341, P0342, P0343, P0366, P0367, P0368, P2088, P2089, P2090, and P2091 must run and pass.
* DTC P0016, P0017, P0335, P0336, or P0338 is not set.
* The engine is operating for greater than 2 seconds.
* The engine speed is greater than 480 RPM.
* The engine must accelerate such that the CMP actuator system is commanded from the park position to the phased position. This is considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 seconds each in the phased position.
* DTC P000A, P000B, P0011, and P0014 run continuously once the above conditions are met for greater than 20 seconds.

Conditions for Setting the DTC

* The ECM detects the difference between the desired camshaft position angle and the actual camshaft position angle is greater than 6-11 degrees.
OR
* The ECM detects a slow response, a deviation greater than 1.5 degrees in time greater than 2.5 seconds, for the actual camshaft position angle to match the desired position angle during the test.
* Either condition exists for greater than 1 second or for a cumulative of 5 seconds.

Action Taken When the DTC Sets

DTCs P000A, P000B, P0011, and P0014 are type B DTCs.

Conditions for Clearing the DTC

DTCs P000A, P000B, P0011, and P0014 are type B DTCs.

Reference Information
Schematic Reference

Engine Controls Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Camshaft Actuator System Description (Camshaft Actuator System Description)
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 (Programming and Relearning)for scan tool information

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 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 chain can cause this DTC to set.

Circuit/System Verification

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

1. Ignition ON, observe the scan tool DTC information. Verify that none of the following DTCs are set. DTC P0016, P0017, P0335, P0336, P0338, P0341, P0342, P0343, P0366, P0367, P0368, P0520, P0638, P2100, P2101, or P2119.

• If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle) for further diagnosis.

2. Engine idling, command the suspected camshaft actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool CMP Angle Variance parameters. The CMP Angle Variance should be less than 2 degrees in each of the commanded states.
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.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate Camshaft Position Actuator Solenoid Valve.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.

• If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.

3. Connect a DMM, set on the diode setting, between the control circuit terminal B and ground. The voltage should be greater than 2 V.

• If the DMM displays OL, test the control circuit for a short to voltage or an open/high resistance. If the circuit/connections test normal, replace the Engine Control Module.
• If less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the Engine Control Module.

4. Command the Camshaft Position Actuator Solenoid Valve ON and OFF with a scan tool. The DMM should transition from greater than 2 V when commanded OFF to less than 1 V, when commanded ON.

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

5. Remove the CMP actuator solenoid. Inspect the CMP actuator solenoid and mounting area for the following conditions:

* For a torn, restricted, mis-positioned, or missing screens at the CMP actuator solenoid
* For engine oil leaks between the oil sealing lands of the CMP actuator solenoid-Inspect the lands of the CMP actuator solenoid for nicks.
* For oil seepage at the CMP actuator solenoid connector

• If a condition is found, replace CMP actuator solenoid.

6. Ignition OFF, swap the suspected CMP actuator solenoid with a CMP actuator solenoid that is operating correctly.

Note: This step is testing the mechanical CMP actuator for the camshaft that set the DTC.

7. Engine idling. Command the suspected camshaft actuator from 0 degrees to 20 degrees and back to zero while observing the appropriate scan tool CMP Angle Variance parameters. The CMP Angle Variance should be less than 2 degrees in each of the commanded states.

• If the CMP Angle Variance is greater than 2 degrees, replace the mechanical camshaft position (CMP) actuator.

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

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate camshaft position (CMP) actuator solenoid.
2. Test for 7-12 ohm between the control terminal B and the ignition terminal A 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 less than the specified value, replace the CMP actuator solenoid valve.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Camshaft Position Actuator Solenoid Valve Replacement (Service and Repair)
* Camshaft Position Exhaust Actuator Replacement (Camshaft Position Exhaust Actuator Replacement)
* Camshaft Position Intake Actuator Replacement (Camshaft Position Intake Actuator Replacement)
* Control Module References (Programming and Relearning)for engine control module replacement, setup, and programming