Manifold Pressure/Vacuum Sensor: Description and Operation

OPERATION
- Manifold differential pressure switch converts the intake manifold plenum pressure to the voltage and inputs to the engine control module. Engine control module confirms the operation of EGR system from this signal and, if there is any error in the EGR system, memorizes the diagnostic trouble code.
- 5 V of power is supplied to the manifold differential pressure sensor from the engine control module and the sensor circuit ground is located in the engine control module.
- The manifold differential pressure sensor output voltage is proportioned to the intake manifold plenum pressure and sent to the engine control module.