Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, verify that DTC P0641, P0651, P0697, or P06A3 is not set.
- If any of the DTCs are set
  Refer to DTC P0641, P0651, P0697, P06A3, or P06D2 for further diagnosis.
- If none of the DTCs are set
Determine the current vehicle testing altitude.
Verify the scan tool MAP Sensor pressure parameter is within the range specified in the Altitude Versus Barometric Pressure table.
- If the MAP Sensor parameter is not in range
  Refer to Circuit/System Testing.
- If the MAP Sensor parameter is within range
Engine idling, verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 PSI) and changes with accelerator pedal input.
- If not between 26-52 kPa (3.8-7.5 PSI) or does not change
  Refer to Circuit/System Testing.
- If between 26-52 kPa (3.8-7.5 PSI) and changes
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed in the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
  Refer to Circuit/System Testing.
- If the DTC does not set
All OK.