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 voltage input at PCM is high with throttle closed, or voltage is low with TP sensor voltage greater than one volt.