DTC P0011, P0014, P0021, or P0024 (LF1, LFW, LFX)
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DTC P0011, P0014, P0021, or P0024 (LF1, LFW, LFX)
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DTC P0011
Intake Camshaft Position System Performance Bank 1
DTC P0014
Exhaust Camshaft Position System Performance Bank 1
DTC P0021
Intake Camshaft Position System Performance Bank 2
DTC P0024
Exhaust Camshaft Position System Performance Bank 2
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Circuit/System Description
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The camshaft position 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 signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position actuator solenoid duty cycle by controlling the amount of solenoid ON time. The camshaft position actuator solenoid controls the advance or the retard of each camshaft. The camshaft position actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.
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Conditions for Running the DTC
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DTC P0010, P0013, P0020, P0023, P0016, P0017, P0018, P0019, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, and P0391 is not set.
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The ignition voltage is between 11 and 32 V.
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The desired camshaft position is not changing greater than 4.5° for at least 1 s.
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Both of the desired and actual camshaft position actuator values cannot be greater than 20° or less than 5°.
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DTCs P0011, P0014, P0021, and P0024 run continuously when the above conditions are met.
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Conditions for Setting the DTC
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P0011 and P0021
The ECM detects whether the difference between the desired and actual camshaft position angle is greater than 5° for more than 2.5 s.
P0014 and P0024
The ECM detects whether the difference between the desired and actual camshaft position angle is greater than 5° for more than 10 s.
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Action Taken When the DTC Sets
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DTCs P0011, P0014, P0021, and P0024 are type B DTCs.
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Conditions for Clearing the DTC
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DTCs P0011, P0014, P0021, and P0024 are type B DTCs.
Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft position actuator solenoid, mechanical camshaft actuator, or timing chain can cause this DTC to set.
Schematic Reference
Engine Controls Schematics (3.0L (LF1))
Engine Controls Schematics (2.8L (LAU))
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
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Circuit/System Verification
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1.
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Note
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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. Refer to
Oil Pressure Diagnosis and Testing
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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 parameter. Advise the customer an oil change may be required.
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If a crankshaft or camshaft position sensor DTC is set, the Camshaft Position Actuator output control will not function.
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Ignition ON, observe the scan tool DTC information. Verify that DTC P0016, P0017, P0018, P0019, P0335, P0336, P0338, P0340, P0341, P0345, P0346, P0365, P0366, P0390, or P0391 is not set.
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3.
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Engine idling, command the appropriate Camshaft Position Actuator from 0 20° and back to 0° while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2° in each of the commanded states.
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4.
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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.
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1.
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Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve .
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2.
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Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.
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3.
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If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
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4.
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Note
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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.
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Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 1 and ground.
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5.
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If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
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6.
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Connect the DMM between control circuit pin 1 and B+. Switch the CMP actuator solenoid valve ON and OFF with a scan tool. The DMM should change over to higher than 10 V when it is commanded OFF and to less than 1 V when it is commanded ON.
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7.
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If the circuit voltage does not correspond to the specified values, test the control circuit for an open/high resistance or a short to ground. If the circuit tests normal, replace the K20 ECM.
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8.
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Remove the Camshaft Position Actuator Solenoid Valve . Verify the following conditions do not exist with the Camshaft Position Actuator Solenoid Valve:
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Torn, restricted, mis-positioned, or missing screens at the CMP actuator solenoid
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Engine oil leak between the oil sealing lands of the CMP actuator solenoid. Inspect the lands of the CMP actuator solenoid for nicks.
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Oil seepage at the CMP actuator solenoid connector
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9.
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If a condition is found, replace Q6 Camshaft Position Actuator Solenoid Valve.
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10.
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Ignition OFF, swap the appropriate Camshaft Position Actuator Solenoid Valve with a Camshaft Position Actuator Solenoid Valve that is operating correctly.
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11.
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Engine idling. Command the appropriate Camshaft Position Actuator from 0 - 20° and back to 0° while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2° in each of the commanded states.
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12.
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If greater than the specified value, replace the mechanical camshaft position actuator.
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13.
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If all circuits/connections test normal, test or replace the Q6 Camshaft Position Actuator Solenoid Valve .
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1.
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Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve .
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2.
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Test for 5-12 Ω between the ignition circuit terminal 1 and the control circuit terminal 2 of the Q6 Camshaft Position Actuator Solenoid Valve .
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3.
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If not within the specified range, replace the Q6 Camshaft Position Actuator Solenoid Valve .
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4.
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Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve housing.
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5.
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If not the specified value, replace the Q6 Camshaft Position Actuator Solenoid Valve.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
