Circuit Description

Manifold Absolute Pressure (MAP) sensor responds to changes in intake manifold pressure (vacuum). PCM applies 5 volts to MAP sensor. Changes in pressure, resulting from engine load and RPM, are converted into voltage input monitored by PCM. A low voltage reading at PCM indicates low manifold pressure, and a high voltage at PCM indicates high manifold pressure. DTC P0106 will set when:

• MAP sensor value at engine cranking differs from engine running by less than 1.3 kPa.
• Barometric pressure differs from MAP sensor by less than 33 kPa.