Chevrolet Trax: DTC P0011 OR P0014
Diagnostic Instructions
- Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
- 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
Diagnostic Fault Information
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 3º 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 10º 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 (Encore) ENGINE CONTROLS SCHEMATICS (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Component View Reference
Powertrain Component Views
Description and Operation
Camshaft Actuator System Description
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV) ,
Powertrain Diagnostic Trouble
Code (DTC) Type Definitions (2H0)
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
NOTE:
- Ignition On.
- Verify the correct engine oil level and pressure. Refer to OIL
PRESSURE DIAGNOSIS AND
TESTING
- If the oil level and the oil pressure are not correct
Repair as necessary
- If the oil level and the oil pressure are correct
NOTE: If a crankshaft or camshaft position sensor DTC is set, the
scan tool
Camshaft Position Actuator output control will not function.
- Verify DTC P0010, P0013, P0016, P0017, P0335, P0336, P0340, P0341,
P0365, P0366, P2088, P2089,
P2090 or P2091 is not set.
- If any of the DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If none of the DTCs are set
- Engine idling.
- Verify the scan tool parameters are less than 2º in each of the
commanded states when commanding the
Camshaft Position Actuator from 0-20º and back to 0º with the scan tool.
- Intake Camshaft Position Variance
- Exhaust Camshaft Position Variance
- Intake Camshaft Position Variance
- Exhaust Camshaft Position Variance
Refer to Circuit/System Testing.
- Verify that DTC P0011 or P0014 is not set.
- If any of the DTCs are set
Refer to Circuit/System Testing.
- 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.
- Verify the DTC does not set.
Refer to Circuit/System Testing.
- All OK.
Circuit/System Testing
- Ignition Off, disconnect the harness connector at the appropriate Q6
Camshaft Position Actuator Solenoid
Valve. It may take up to 2 minutes for all vehicle systems to power down.
- Test for less than 5 ohms between the low reference circuit terminal 1
and ground.
- Ignition Off, disconnect the harness connector at the K20 Engine Control
Module.
- Test for less than 2 ohms in the low reference circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the K20 Engine Control Module.
- If less than 5 ohms
- Ignition On.
NOTE: A test lamp must be used for this test. The control circuit
is pulled-up to a
low current voltage, 1.5-4.5 V on the control circuit is normal.
- Verify that a test lamp does not illuminate between the control circuit
terminal 2 and ground.
- If the test lamp illuminates
- Ignition Off, disconnect the harness connector at the K20 Engine Control
Module, ignition On.
- Test for less than 1 V between the control circuit and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the K20 Engine Control Module.
- If the test lamp does not illuminate
- Remove the test lamp.
- Verify the scan tool parameters listed below do not display Malfunction
when commanding the
appropriate Camshaft Position Actuator Solenoid Valve On with a scan tool.
- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low
Voltage Test Status
- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low
Voltage Test Status
- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low
Voltage Test Status
- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low
Voltage Test Status
- If Malfunction is displayed
- Ignition Off, disconnect the harness connector at the K20 Engine Control
Module.
- Test for less than 2 ohms in the control circuit end to end.
- If 2 ohms or greater, repair the open/high resistance or short to ground
in the circuit.
- If less than 2 ohms, replace the K20 Engine Control Module.
- If Malfunction is not displayed
- Ignition Off, remove the Q6 Camshaft Position Actuator Solenoid Valve.
- Verify the conditions listed below do not exist with the Q6 Camshaft
Position Actuator Solenoid Valve:
- Torn, restricted, mis-positioned, or missing screens.
- Engine oil leak between the oil sealing lands of the solenoid. Inspect
the lands of the solenoid for
nicks.
- Oil seepage at the solenoid connector.
Replace the Q6 Camshaft Position Actuator Solenoid Valve.
- If a condition is not found
NOTE: After swapping toe solenoids, install jumper wires to the
appropriate
terminals of the harness connectors and the solenoids.
- Ignition Off, swap the Q6 Camshaft Position Actuator Solenoid Valve with
the Q6 Camshaft Position
Actuator Solenoid Valve that is operating correctly.
- Engine idling.
- Verify the scan tool Camshaft Position Variance parameter is less than
2º in each of the commanded
states when commanding the Camshaft Position Actuator from 0-20º and back to
0º with a scan tool.
Replace the mechanical camshaft position actuator.
- Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.
Component Testing
- Ignition Off, disconnect the harness connector at the appropriate Q6
Camshaft Position Actuator Solenoid
Valve.
- Test for 7-12 ohms between the control terminal 2 and the low reference
circuit terminal 1.
Replace the Q6 Camshaft Position Actuator Solenoid Valve.
- Test for infinite resistance between each terminal and the Q6 Camshaft
Position Actuator Solenoid Valve
housing.
- If less than infinite resistance
Replace the Q6 Camshaft Position Actuator Solenoid Valve.
- All OK
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Camshaft Position Actuator Solenoid Valve Replacement
- Control Module References for ECM replacement, programming and setup
READ NEXT:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
SEE MORE:
Special Tools
EN 41413-VLV EVAP Service Port Vent Fitting
Operating Instructions for the Evaporative Emission System Tester (EEST)
Vehicle Setup
WARNING: Refer to Fuel and Evaporative Emission Pipe Warning .
CAUTION: Refer to Clean, Dry, Low Pressure Gas Source Caution
NOTE: When servicing the EVAP
Fig. 92: Spark Plugs
Spark Plug Replacement
CAMSHAFT POSITION ACTUATOR SOLENOID VALVE REPLACEMENT
Removal Procedure
Fig. 93: ECM Wiring Harness
Disconnect the intake camshaft position actuator solenoid valve wiring
harness plug (3).
Disconnect the exhaust camshaft position actuator soleno