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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 2.0L (LSY) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P2C05-P2C10, P2C0A-P2C0F, P2C12-P2C19, or P30B0-P30B3 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify there are no related DTCs set in the following system:
    • 5 V Reference Circuit
    • B23 Camshaft Position Sensor
    • B26 Crankshaft Position Sensor
    • Go to next step: If the DTC is not set 
  3. Engine = Running
  4. Verify DTC P2C06, P2C0A, P2C0E, P2C13, P2C17, P30B1 is not set.
    • If the DTC is set 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  5. Verify the scan tool parameter:
    • Cylinder 1 Intake Camshaft Profile Sleeve Position = The parameter state should change
    • Cylinder 2 Intake Camshaft Profile Sleeve Position = The parameter state should change
    • Cylinder 3 Intake Camshaft Profile Sleeve Position = The parameter state should change
    • Cylinder 4 Intake Camshaft Profile Sleeve Position = The parameter state should change
    • Cylinder 2 Exhaust Camshaft Profile Sleeve Position = The parameter state should change
    • Cylinder 3 Exhaust Camshaft Profile Sleeve Position = The parameter state should change
    • Perform the action while monitoring the parameter: Various engine loads - Vehicle driving.
    • If the parameter state does not change 

      Refer to: Circuit/System Testing

    • Go to next step: If the parameter state changes 
  6. 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 
  7. All OK.