1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 270Get this manual
FICHT- FUEL INJECTION Theory
External EMM Sensors
Air Temperature Sensor: The air temperature sensor monitors the temperature of air entering the air silencer
The AT sensor is Positive Temperature Coefficient (PTC) thermistor, resistor whose resistance changes with
temperature and alters voltage values accordinglyWhen temperature increases, both resistance and voltage also increaseWhen temperature decreases, resistance and voltage likewise decrease