Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Manifold Pressure/Vacuum Sensor > Component Information > Specifications > Page 2166
Manifold Pressure/Vacuum Sensor: Description and Operation
Intake Manifold Pressure Sensor
Used by the fuel injection ECU:
PURPOSE AND LOCATION
The most important information for the fuel injection system comes from the intake manifold pressure sensor (located on the driver side strut tower
The manifold pressure sensor is connected to the intake manifold via a vacuum hose. It takes a reading of the intake manifold absolute pressure.
The atmospheric pressure is measured during starting and when under full load condition, giving the injection ECU an opportunity to adjust
The sensor terminal has three connectors:
A = To vehicle ground
The intake manifold pressure sensor is sensitive to electrical disturbances and is therefore fitted with a metal cover.
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