Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Intake Air Temperature Sensor > Component Information > Specifications > Page 4594
Intake Air Temperature Sensor: Description and Operation
Intake Manifold Air Temperature Sensor
Used by the fuel injection ECU:
PURPOSE AND LOCATION
The intake air temperature sensor is located in the intake air tube at the air filter housing. Its signal, with the intake manifold pressure sensor signal
The intake air passes through perforations in the sensor and over a bulb which changes electrical resistance depending on air temperature.
The air temperature sensor is of the Negative Temperature Co-efficient (NTC) type.
This means the higher the air temperature, the lower the sensor resistance. The ECU applies a regulated constant voltage to the sensor, and
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