Circuit/System Verification

Ignition ON.
Verify DTC P0033, P0034 or P0035 is not set.
- If any of the DTCs are set
  Refer to DTC P0033-P0035 .
- If none of the DTCs are set
Verify the scan tool BARO Sensor parameter is within the range specified in the Altitude Versus Barometric Pressure 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
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)
Verify a click is heard or felt from the Q40 Turbocharger Bypass Solenoid Valve when commanding the Turbocharger Bypass Solenoid Valve ON and OFF with a scan tool.
- If a click is not heard or felt
  Refer to Circuit/System Testing .
- If a click is heard or felt
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 a DTC does not set.
- If a DTC sets
  Refer to Circuit/System Testing .
- If a DTC does not set
All OK