Circuit/System Verification

Verify that DTC P0697 is not set.
- If the DTC is set, refer to DTC P0641, P0651, P0697, or P06A3 (ECM) .
Verify that restrictions do not exist in the exhaust system. Refer to Restricted Exhaust .
Ignition OFF for 90 s, determine the current vehicle testing altitude.
Ignition ON, engine OFF, observe the scan tool BARO parameter. Compare the parameter to the Altitude Versus Barometric Pressure table. The BARO parameter should be within the specified range indicated in the table.
Use the scan tool and compare the MAP Sensor parameter to a known good vehicle, under various operating conditions. The reading should be within 5 kPa of the known good vehicle.
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 from the Freeze Frame/Failure Records data.