LF1, LFW, LFX, LWR
DTC P0010, P0013, P0020, or P0023 (LF1, LFW, LFX, LWR)
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 P0010
- Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 1
DTC P0013
- Exhaust Camshaft Position (CMP) Actuator Solenoid Control Bank 1
DTC P0020
- Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2
DTC P0023
- Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Bank 2
Circuit/System Description
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 valve signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position actuator solenoid valve duty cycle by controlling the amount of solenoid valve ON time. The camshaft position actuator solenoid valve controls the advance or the retard of each camshaft. The camshaft position actuator solenoid valve controls the oil flow that applies the pressure to advance or retard the camshafts.
The ECM controls the camshaft position actuator solenoid valve by suppling a 12 V pulse width modulated (PWM) signal. The ECM supplies a ground to the low reference circuit.
Conditions for Running the DTC
* The ignition voltage is greater than 11 V.
* The ignition switch is in the Crank or Run position.
* The ECM commanded the camshaft position actuator solenoid valve ON.
* DTCs P0010, P0013, P0020, and P0023 run continuously once the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.
Action Taken When the DTC Sets
DTCs P0010, P0013, P0020, and P0023 are type B DTCs.
Conditions for Clearing the DTC
DTCs P0010, P0013, P0020, and P0023 are type B DTCs.
Diagnostic Aids
If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan too circuit status parameters for the component. The circuit status parameters change from OK or Not Run to Fault if there is a condition with the circuit or a connection.
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 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
Note: If a crankshaft or camshaft position sensor DTC is set, the Camshaft Position Actuator output control will not function.
1. Ignition ON, observe the DTC information with a scan tool. Verify DTC P0335, P0336, P0340, and P0341 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.
2. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 25 degrees and back to zero while observing the appropriate control circuit status parameters listed below with a scan tool:
* The Int/Exh CMP Sol Bn 1 or 2 Ckt Short Gnd Test Status
* The Int/Exh CMP Sol Bn 1 or 2 Ckt Open Test Status
* The Int/Exh CMP Sol Bn 1 or 2 Ckt Short Volts Test Status
Each parameter should display OK or Not Run
3. With the engine at normal operating temperature, raise the engine speed to 2,000 RPM for 10 s. DTC P0010, P0013, P0020, or P0023 should not set.
4. 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 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 ohm between the low reference circuit terminal 2 and ground.
• If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
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.
3. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 1 and ground.
• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.
4. Connect the DMM black lead to the control circuit terminal 1. Connect the DMM red lead to B+. Set the DMM on the diode setting. Command the CMP actuator solenoid ON and OFF with a scan tool. The DMM should transition from OL when commanded OFF to less than 1 V when commanded ON.
• 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 ECM.
5. If all circuits/connections test normal, test or replace the appropriate camshaft position actuator solenoid valve.
Component Testing
1. Ignition OFF, disconnect the harness connector at the appropriate camshaft position actuator solenoid valve.
2. Test for 5-12 ohm between the control terminal 1 and the low reference circuit terminal 2 of the camshaft position actuator solenoid valve.
• If not within the specified range, replace the camshaft position actuator solenoid valve.
3. Test for infinite resistance between each terminal and the camshaft position actuator solenoid valve housing.
• If not the specified value, replace the camshaft position actuator solenoid valve.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake
* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust
* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake
* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust
* Control Module References Control Module References for ECM replacement, programming, and setup