Rodeo Sport 4WD V6-3.2L (2002)
Manifold Absolute Pressure Sensor: Description and Operation
The manifold absolute pressure (MAP) sensor responds to changes in intake manifold pressure (vacuum). The MAP sensor signal voltage to the PCM
varies from below 2 volts at idle (high vacuum) to above 4 volts with the ignition ON, engine not running or at wide-open throttle (low vacuum).
The MAP sensor is used to determine the following:
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Manifold pressure changes while the linear EGR flow test diagnostic is being run. Refer to DTC P0401 in this section.
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Barometric pressure (BARO).
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 higher than the possible
range of the sensor will set DTC P0108. An intermittent low or high voltage will set DTC P1107, respectively. The PCM can detect a shifted MAP
sensor. The PCM compares the MAP sensor signal to a calculated MAP based on throttle position and various engine load factors. If the PCM detects a
MAP signal that varies excessively above or below the calculated value, DTC P0106 will set.
