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4-22 SNO-142 0644-493 AE114 0744-048 Arctic Cat EFI System The Arctic Cat EFI System operates off a series of coils located on the stator. The EFI system is made up of the following compo- nents. 1. Charge coils (1 and 2) which are located on the stator provide AC voltage to the ECU/CCU where AC voltage is converted to DC voltage. 2. A fuel pump coil located on the stator operates the low voltage, high output fuel pump. At cranking speed, the high output fuel pump provides enough fuel to charge the fuel rail. 3. An injector coil located on the stator provides the injectors with DC voltage for operation through the ECU. 4. A lighting coil located on the stator plate provides output to the CCU to operate accessories and the lighting system. 5. An electrical control unit (ECU) calculates input from sensors (intake air temperature sensor, cool- ant temperature sensor, throttle position sensor, ignition timing sensor, barometric pressure sensor, and on the 800 cc, a knock sensor) to provide the engine with the correct fuel mixture and timing for optimum operation. EFI FEATURES 1. Automatic compensation for temperature. 2. Automatic compensation for altitude. 3. Optimum throttle response through high pressure injection. 4. Quick starting in every condition. 5. Improved fuel efficiency with maximum mileage in every condition. 6. Engine RPM more stable in every condition. |