• | 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. |
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
---|---|---|---|---|---|
Intake CMP Actuator Solenoid Control Circuit Bank 1 | P0010, P0011 | P0010 | P0010 | P0010, P0011 | -- |
Exhaust CMP Actuator Solenoid Control Circuit Bank 1 | P0013, P0014 | P0013, P0014, | P0013 | P0013, P0014 | -- |
Intake CMP Actuator Solenoid Control Circuit Bank 2 | P0020, P0021 | P0020, P0021 | P0020 | P0020, P0021 | -- |
Exhaust CMP Actuator Solenoid Control Circuit Bank 2 | P0023, P0024 | P0023, P0024 | P0023 | P0023, P0024 | -- |
Intake CMP Actuator Solenoid Low Reference Circuit Bank 1 | -- | P0010, P0011 | P0010 | -- | -- |
Exhaust CMP Actuator Solenoid Low Reference Circuit Bank 1 | -- | P0013, P0014 | P0013 | -- | -- |
Intake CMP Actuator Solenoid Low Reference Circuit Bank 2 | -- | P0020, P0021 | P0020 | -- | -- |
Exhaust CMP Actuator Solenoid Low Reference Circuit Bank 2 | -- | P0023, P0024 | P0023 | -- | -- |
The camshaft position (CMP) actuator system is comprised of 4 CMP actuator solenoids, 4 oil control valves, and 4 CMP actuators. The engine control module (ECM) sends an electrical signal to the CMP actuator solenoids through the control circuits when a camshaft timing change is desired. The ground circuits of the CMP actuator solenoids are used as a return. The CMP actuator solenoid uses electromagnetic force to pull on the plunger of the oil control valve. The oil control valve will port the pressurized engine oil to either the advancing or retarding chambers of the CMP actuator. The CMP actuator, in turn, changes the CMP relative to the crankshaft position (CKP). If the desired CMP does not match the actual CMP for a calibrated amount of time, DTC P0011, P0014, P0021, or P0024 will set.
• | DTCs P0010, P0013, P0016, P0017, P0018, P0019, P0020, P0023, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P2088, P2089, P2090, P2091, P2092, P2093, P2094, P2095 are not set. |
• | The CMP actuators are commanded. |
• | The engine oil pressure (EOP) is between 100-696.4 kPa (14.5-101 psi). |
• | The engine speed is at an RPM between 1,000-6,500 RPM, that will allow for steady activation of the cam actuators based on calculated engine oil temperature (EOT). |
• | The calculated EOT is between -10° to +150°C (+14° to +302°F). |
• | The ignition voltage is between 9-18 volts. |
• | DTC P0011, P0014, P0021, or P0024 runs continuously when the above conditions are met. |
The ECM detects the difference between the desired camshaft position and the actual camshaft position angles is more than 6 degrees for more than 1.6 seconds.
DTC P0011, P0014, P0021, and P0024 are Type B DTCs.
DTC P0011, P0014, P0021, and P0024 are Type B DTCs.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
Important: You must complete the Circuit/System Verification before proceeding with Circuit/System Testing.
Important: Incorrect engine oil viscosity, aftermarket engine oil additives, or engine oil that overdue for changing, can greatly affect the performance of the camshaft actuator.
⇒ | If greater than 1 ohm, test the low reference for an open/high resistance. If the circuit tests normal replace the ECM. |
⇒ | If greater than 1 ohm, test the control circuit for an open/high resistance. If the circuit tests normal replace the ECM. |
⇒ | If the resistance is not within the specified range, replace the CMP actuator solenoid. |
Important: Do not allow the solenoid to be energized for more than 2 seconds.
⇒ | If the function does not perform as specified, replace the CMP actuator solenoid. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for ECM replacement, setup, and programming |