Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Verify that DTC P0641 is not set.
- If the DTC is set
  Refer to DTC P0641, P0651, P0697, P06A3, or P06D2 .
- Go to next step: If the DTC is not set
Verify the scan tool BARO parameter is within the range specified in the Altitude Versus Barometric Pressure table, for the current vehicle testing altitude.
- BARO is not in range
  Refer to DTC P2227-P2230 .
- Go to next step: BARO is within range
Verify the scan tool Boost Pressure Sensor pressure and BARO parameters are within 3 kPa (0.4 psi).
- The parameters are not within 3 kPa (0.4 psi).
  Refer to Circuit/System Testing.
- Go to next step: The parameters are within 3 kPa (0.4 psi).
Verify the scan tool MAP Sensor parameter and the Boost Pressure Sensor parameter are within 20 kPa (2.9 psi) during a WOT acceleration at the time of the 1-2 shift.
- The parameters are not within 20 kPa (2.9 psi)
  Refer to Circuit/System Testing.
- Go to next step: The parameters are within 20 kPa (2.9 psi)
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 the DTC sets
  Refer to Circuit/System Testing.
- Go to next step: If the DTC does not set
All OK.