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Home >> Chevrolet >> 2017 >> Traverse Premier, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls And Fuel - 3.6L (LLT) - DTC P0340 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P05CC-P05CF: Cold Start Camshaft Position System Performance Bank >> Circuit/System Verification

Circuit/System Verification

    NOTE:
    • Correct engine oil type and viscosity are critical to the performance of the camshaft position actuator system.
    • 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.
    • 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 Remaining parameter. Advise the customer an oil change may be required.
  1. Ignition On.
  2. Verify the engine has the correct oil level and the correct oil pressure.
    • If the oil level and the oil pressure are not correct 

      Repair as necessary

    • If the oil level and the oil pressure are correct 
    3. NOTE:

    If a crankshaft or camshaft position sensor DTC is set, the scan tool Camshaft Position Actuator output control will not function.

  3. Verify DTC P0010, P0016, P0017, P0018, P0019, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390 or P0391, is not set.
    • If none of the DTCs are set 
  4. Engine idling at normal operating temperature.
  5. Verify the scan tool parameters are less than 2° in each of the commanded states when commanding the Camshaft Position Actuator from 0° to maximum range and back to 0° with the scan tool.
    • Intake Camshaft Position Variance Bank 1
    • Exhaust Camshaft Position Variance Bank 1
    • Intake Camshaft Position Variance Bank 2
    • Exhaust Camshaft Position Variance Bank 2
    • If 2° or greater 

      Refer to Circuit/System Testing.

    • If less than 2° 
  6. 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.
    • If any DTC sets 

      Refer to Circuit/System Testing.

    • If a DTCs does not set 
  7. All OK.
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