Pressure sensor, A/C (620) EDC16
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Pressure sensor, A/C (620) EDC16
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Pressure sensor A/C (620)
Measures the pressure of the A/C system.
Capacitive sensor with integrated electronics for signal conversion.
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Pin no.
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Signal type
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Description
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1
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Ground
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Connected to ECM pin 12(B).
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2
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Power supply
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Connected to ECM pin 22(B).
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3
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Signal
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Connected to ECM pin 13(B).
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The pressure sensor contains two metal-coated ceramic discs mounted close together. The disc closest to the pressure connection is thinner and bends when it comes under pressure. This modifies the capacitance between the metal coatings of the discs as a function of the pressure. Built into the sensor is a circuit which converts the capacitance to an analogue voltage.
