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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 2.0L (LUZ) Diesel - DTC P0016 To DTC P0406) >> Diagnostic Information and Procedures >> DTC P0234 or P0299: Engine Over/Underboost >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON
  2. Verify that DTC P003A, P0045, P0047, P0048, P0106, P0107, P0108, P2564, P2565, P2598 or P2599 is not set.
    • If none of the DTCs are set 
  3. Engine running, increase the engine speed to 2, 000 RPM and maintain.
  4. Verify the scan tool MAP Sensor parameter increase to 100-140 kPa (14.5-20.3 PSI) when the Turbocharger Vane Position Solenoid Valve is commanded ON and decrease to near 96 kPa (13.9 PSI) when commanded OFF.
    • If the MAP Sensor parameter increases and decreases as specified 
  5. Operate the vehicle within the Conditions for Running the DTCs. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  6. Verify a DTC does not set.
    • If a DTC does not set 
  7. All OK.