Electronic Fuel Injection - Arctic Cat XC 450i 2012 Service Manual

FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
Fuel/Lubrication/Cooling
SPECIAL TOOLS
A number of special tools must be available to the techni-
cian when performing service procedures in this section.
Refer to the current Special Tools Catalog for the appro-
priate tool description.
Description
Oil Pressure Test Kit
Tachometer
Fuel Pressure Test Kit
 NOTE: Special tools are available from the Arctic
Cat Service Department.

Electronic Fuel Injection

! WARNING
Whenever any maintenance or inspection is performed
on the fuel system during which there may be fuel leak-
age, there should be no welding, smoking, open flames,
etc., in the area.
TROUBLESHOOTING
1. Verify that the electric fuel pump is operating by lis-
tening for a "whirring" sound for several seconds
after the ignition switch is turned to the ON position.
If no sound can be heard, see Electric Fuel Pump/
Fuel Level Sensor in this section.
2. Check for a flashing Diagnostic Trouble Code (DTC)
and a Malfunction Indicator Light (MIL) in the form
of a wrench icon on the LCD. If a code is flashing, see
Diagnostic Trouble Codes (DTC) in Electrical System.
3. Make sure there is sufficient, clean gas in the gas tank.
4. Verify that the battery is sufficiently charged to crank
the engine over at normal speed.
5. Check the air filter housing and air filter for contam-
ination. Clean or replace as necessary (see Periodic
Maintenance).
Throttle Body
REMOVING
1. Remove the heat shields and seat.
2. Disconnect the negative battery cable; then remove
the gas tank (see Gas Tank in this section).
66
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Gasoline may be under pressure. Place an absorbent
towel under the connector to absorb any gasoline spray
when disconnecting.
3. Loosen the clamp securing the intake boot to the
throttle body; then loosen the clamp securing the
intake boot to the intake housing and slide the intake
housing rearward.
p/n
0644-495
0644-275
0644-571
4. Disconnect the MAP/IAT sensor connector, ISC con-
nector, and TPS connector; then loosen the clamp
securing the throttle body to the intake manifold boot
and slide the throttle body out.
5. Remove the throttle arm cover and loosen the throttle
cable jam nut; then disconnect the throttle cable and
remove the throttle body.
INSTALLING
1. Connect the throttle cable to the throttle arm; then
install the throttle cable housing in the throttle body
and tighten the jam nut. Install the throttle arm cover
and secure with two machine screws.
2. Place the throttle body into the intake manifold boot
and tighten the boot clamp securely.
3. Connect the TPS connector, ISC connector, and the
MAP/IAT sensor connector.
4. Place the intake housing into the boots and tighten
the boot clamps securely.
5. Install the gas tank; then the heat shields and seat.
Manual
Table of Contents
! WARNING
FI691A
FI528A