Regal V6-3.8L VIN K (1997)
Manifold Pressure/Vacuum Sensor: Technical Service Bulletins
Manifold Absolute Sensor (VIN 1)
The Manifold Absolute Pressure (MAP) sensor responds to changes in intake manifold pressure. The PCM supplies a 5 volt reference and a ground for
the MAP sensor. The MAP sensor provides a signal to the PCM relative to pressure changes in the manifold. With the key ON, engine not running, the
MAP sensor signal voltage to the PCM varies between 1.5 to 2.5 volts. With the engine running, the MAP sensor voltage to the PCM varies from below
2 volts at idle (low manifold absolute pressure - high vacuum) to above 4 volts at wide-open throttle (high manifold absolute pressure - low vacuum).
The PCM monitors the MAP signals for voltages outside the normal range of the MAP sensor. If the PCM detects a voltage that is lower than the
possible range of the MAP sensor, DTC P0107 will be set. A signal voltage that is higher than the possible range of the sensor will set DTC P0108. An
intermittent low or high voltage will set DTC P1107 or P1106 respectively.
