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Home >> Infiniti >> 2003 >> FX45 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0112: Intake Air Temperature Sensor Circuit Low Input Or DTC P0113: Intake Air Temperature Sensor Circuit High Input >> Circuit Description
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Circuit Description

The intake air temperature sensor is built into the mass air flow sensor. The sensor detects intake air temperature and transmits a signal to the ECM. The temperature sensing unit uses a thermistor which is sensitive to changes in temperature. Electrical resistance of the thermistor decreases in response to rise in temperature.

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