1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 241Get this manual
FUEL SYSTEM-FUEL-INJECTED MODELS Both EFI systems have been used on 1997 and 1998 modelsNOTE The type of fuel injection system-batteryless or battery-powered-can be identified by the color and location ofthe ECU boxOn battery-powered systems, the ECU is mounted next to the chaincase and the box is shinyOn batteryless systems, the ECU is mounted on the airbox and the box is black
Intake air temperature sensor
The air temperature sensor, variable resistance device located in the front of the air silencer, changes resistance in relation to the intake air temperatureThe sensor sends signal specifying the air temperature to the ECU