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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.0L (LSY)) >> Diagnostic Information and Procedures >> DTC P06DA-P06DD or P13B1 >> Circuit/System Verification

Circuit/System Verification

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

The engine oil level and condition is critical to the correct operation of the system.

  1. Ignition - On/Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following component/system:
    • B35B Engine Oil Level Sensor
    • B37B Engine Oil Pressure Sensor
    • Go to next step: If a related DTC is not set 
  3. Verify the condition does not exist: Engine Oil - Contaminated/Dirty/Fill Level = Low
    • If a condition exists 

      Repair as necessary

    • Go to next step: If no condition exists 
  4. Verify the scan tool parameter:
    • Engine Oil Pressure Control Valve Control Circuit Open Test Status = Not Run or Okay
    • Engine Oil Pressure Control Valve High Control Circuit High Test Status = Not Run or Okay
    • Engine Oil Pressure Control Valve High Control Circuit Low Test Status = Not Run or Okay
    • If not the specified state 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified state 
  5. Increase the engine speed slowly to 1, 800 RPM and then back to idle.
  6. NOTE:

    Using the scan tool line graph function may make it easier to identify if the value changes.

  7. Verify the scan tool parameter: Engine Oil Pressure = Change is greater than 30 kPa (4 PSI)
    • If the change is less than 30 kPa (4 PSI) 

      Replace the component: Q44 Engine Oil Pressure Control Solenoid Valve

    • Go to next step: If the change is greater than 30 kPa (4 PSI) 
  8. 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 
  9. All OK.