Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

NOTE:

The engine oil level and the oil pressure are critical to the correct operation of the system. Verify the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic.
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 valve and the mechanical camshaft actuator operation. Inspect for dirty or degraded engine oil.
If a crankshaft or camshaft position sensor DTC is set, the scan tool camshaft position actuator output control will be disabled.

Ignition - On/Vehicle - In Service Mode
Verify DTC P0335, P0336, P0340, P0341, P0365, P0366 is not set.
- If any of the DTCs are set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If none of the DTCs are set
Verify the following conditions do not exist:
- Engine Oil - Contaminated/Dirty/Fill Level = Low
- Engine Oil Pressure - Low - Refer to: Oil Pressure Diagnosis and Testing
- If a condition exists
  Repair as necessary
- Go to next step: If no condition exists
Engine - Idling
Perform the appropriate scan tool control function:
- Exhaust Camshaft Position Actuator - On/Off From 0 to 20° and back to 0°
- Intake Camshaft Position Actuator - On/Off From 0 to 20° and back to 0°
- Verify the scan tool parameter:
- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status = OK or Not Run
- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status = OK or Not Run
- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status = OK or Not Run
- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status = OK or Not Run
- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
- If not the specified state
  Refer to: Circuit/System Testing
- Go to next step: If the specified state
Perform the scan tool control function:
- Exhaust Camshaft Position Actuator - On/Off From 0 to 20° and back to 0°
- Intake Camshaft Position Actuator - On/Off From 0 to 20° and back to 0°
- Verify the scan tool parameter:
- Exhaust Camshaft Position Variance = Less than 2° - During each of the commanded states
- Intake Camshaft Position Variance = Less than 2° - During each of the commanded states
- If 2° or greater
  Refer to: Circuit/System Testing
- Go to next step: If less than 2°
Verify the scan tool parameter:
- Intake Camshaft Position Variance = Less than 2°
- Exhaust Camshaft Position Variance = Less than 2°
- Perform the action while monitoring the parameter:
- Wiggle the harness and connector: Q6 Camshaft Position Actuator Solenoid Valve
- Wiggle the harness and connector: K20 Engine Control Module
- If 2° or greater
  Repair as necessary - Wiring/Terminal(s)/Electrical Connector(s)
- Go to next step: If less than 2°
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.
- If the DTC sets
  Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
All OK.