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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Controls And Fuel - 3.6L (LF4 LGX) - DTC P0121 LF4 To DTC P0685 LF4) >> Diagnostic Information and Procedures >> DTC P05CC-P05CF: Cold Start Camshaft Position System (LF4) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE:

    If debris is found on CMP screens, clean the screens and reinspect for damage. If the screens are not damaged, reinstall in the engine.

  1. Remove the Q6 Camshaft Position Actuator Solenoid Valve and verify the following conditions do not exist:
    • Torn, mis-positioned, or missing screens at the CMP actuator solenoid
    • Engine oil leak between the oil sealing lands of the CMP actuator solenoid-Inspect the lands of the CMP actuator solenoid for nicks.
    • Oil seepage at the CMP actuator solenoid connector
    • If a condition is found 

      Replace the Q6 Camshaft Position Actuator Solenoid Valve.

    • If no condition is found 
  2. Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.
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