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Pressure sensor, intake manifold (431)

Fig 1: Identifying Intake Manifold Pressure Sensor (431)
G03708685Courtesy of SAAB-SCANIA OF AMERICA, INC.
Fig 2: Identifying Intake Manifold Pressure Sensor Graph
G03708686Courtesy of SAAB-SCANIA OF AMERICA, INC.
INTAKE MANIFOLD PRESSURE SENSOR TECHNICAL DATA

Power supply, pin 1 V 5
Ground, pin 2    
Voltage at   Pin 3
25 kPa (-0.75 bar) V approx. 0.5
50 kPa (-0.50 bar) V approx. 1.0
75 kPa (-0.25 bar) V approx. 1.5
100 kPa (+/-0 bar) V approx. 2.0
125 kPa (0.25 bar) V approx. 2.5
150 kPa (0.50 bar) V approx. 3.0
175 kPa (0.75 bar) V approx. 3.5
200 kPa (1.00 bar) V approx. 4.0

Measurement range: 15--235 kPa

The pressure given in kPa denotes the absolute pressure, i.e. 100kPa is equivalent to atmospheric pressure at sea level.

When checking the pressure sensor with a pressure/vacuum pump a lower voltage reading may be obtained at high altitude.