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Home >> Geo >> 1989 >> Tracker Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Theory/Operation >> Computerized Engine Controls >> Input Devices >> Air Temperature Sensor (Tracker)

Air Temperature Sensor (Tracker)

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Air temperature sensor is located in the intake manifold. A reference voltage (supplied and monitored by ECM) is modified by sensor resistance. Its thermistor changes resistance with respect to temperature. High temperature causes low resistance. Low temperature causes high resistance. ECM uses this information to determine control (output) signals to injector.