Intake Air Temperature Sensor

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Overview
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Temperature sensor is temperature sensitive semiconductor resistor, which usually has negative temperature coefficient (NTC), meaning that the resistance goes down with increasing temperature. The opposite type – positive (PTC) is very rare.

Intake air temperature sensor

Application:

Engine coolant temperature sensor
Air temperature sensor
Oil temperature sensor
Fuel temperature sensor

Typical location of the intake air temperature sensor

Setting the USB Autoscope IV to the temperature sensor testing mode.

Output voltage waveform from the intake air temperature sensor in good condition on Toyota Avensis 1.8i 2007, recorded while the engine was at idle.

Intake air temperature sensor KIA Ceed 1.6

Output voltage waveform from a properly functioning intake air temperature sensor on KIA Ceed 1.6 2013

Output voltage waveform from a properly functioning intake air temperature sensor on Toyota Avensis 1.8i 2007