LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0335 To DTC P2635 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P2261: Turbocharger Bypass Valve Stuck >> Circuit/System Verification

Circuit/System Verification

  1. Ignition On.
  2. Verify that DTC P0033, P0034, or P0035 is not set
    • If none of the DTCs are set 
  3. Verify the scan tool BARO Sensor parameter is within the range specified in the Altitude Versus Barometric Pressure (With LFX) table for the current testing altitude.
    • If the parameter is not within the range specified in the table. 

      Refer to DTC P2227-P2230 .

    • If the parameter is within the range specified in the table. 
  4. Verify the scan tool Boost Pressure Sensor and BARO Sensor parameters are within 3 kPa (0.4 psi).
    • If the parameters are not within 3 kPa (0.4 psi). 

      Refer to DTC P0236 .

    • If the parameters are within 3 kPa (0.4 psi). 
  5. Verify a click is heard or felt from the Q40 Turbocharger Bypass Solenoid Valve when commanding the Turbocharger Bypass Solenoid Valve between Active and Inactive with a scan tool.
    • If a click is not heard or felt 

      Refer to Circuit/System Testing

    • If a click is heard or felt 
  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.
  7. Verify a DTC does not set.
    • If a DTC sets 

      Refer to Circuit/System Testing

    • If a DTC does not set 
  8. All OK
scientia non olet · About LEMON Manuals