Manifold Pressure/Vacuum Sensor: Description and Operation
From the Powertrain Control Module (PCM), circuit K6 supplies 5 volts to the Manifold Absolute Pressure (MAP) sensor. Circuit K6 connects to cavity 6 of the PCM.Circuit K1 delivers the MAP signal to the PCM. Circuit K1 connects to cavity 1 of the PCM.
The PCM provides a ground for the MAP sensor signal (circuit K1) through circuit K4. Circuit K4 connects to cavity 4 of the PCM.