Arctic Cat XC 450 2016, Service Manual

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2. Adjust the TPS until the correct reading is obtained;
then tighten the screw securely. Open and close the
throttle and determine the reading at idle the correct
voltage. Readjust as necessary.
3. Tighten the mounting screw securely.

NOTE: If the throttle body, ECM, TPS, or ISC are
replaced, the EFI system must be synchronized. Use
the following procedure.
1. With the key off, depress throttle lever to Wide Open
Throttle (WOT).
2. Place the ignition key in the ON position and wait for
10 seconds.
3. Release the throttle lever and wait an additional 10
seconds.
4. Turn the key to the OFF position and allow the gauge
to shut off.
RPM Limiter

NOTE: The ATV is equipped with an ECM that
cuts fuel delivery when maximum RPM is
approached. When the RPM limiter is activated, it
could be misinterpreted as a high-speed misfire.
Stator Coil
VOLTAGE (AC Generator Coil - No
Load)
The connector is the black three-pin one on the right side
of the engine just above the starter motor.
1. Set the meter selector to the AC Voltage position.
2. Test between the three yellow wires for a total of
three tests.
3. With the engine running at the specified RPM, all
wire tests must show 60 AC volts.
 NOTE: If both AC Generator coil tests failed, check
all connections, etc., and test again. If resistance is
present but no voltage is present, check the rotor.
RESISTANCE (AC Generator Coil)
1. Set the meter selector to OHMS position.
2. Test between the three yellow wires for a total of
three tests.
3. The meter reading must be within specification.
Regulator/Rectifier
The regulator/rectifier is located under the radiator/elec-
trical access panel.
TESTING
1. Start engine and warm up to normal operating tem-
peratures; then connect a multimeter to the battery as
follows.
2. Select the DC Voltage position; then connect the red
tester lead to the positive battery post and the black
tester lead to the negative battery post.
3. Start the engine and slowly increase RPM. The volt-
age should increase with the engine RPM to a maxi-
mum of 15.5 DC volts.
 NOTE: If voltage rises above 15.5 DC volts, the reg-
ulator is faulty or a battery connection is loose or cor-
roded. Clean and tighten battery connections or
replace the regulator/rectifier. If voltage does not rise,
check Voltage (Charging Coil - No Load) in this sec-
tion. If charging coil voltage is normal, replace the
regulator/rectifier.
Starter Motor

NOTE: The starter motor is a non-serviceable com-
ponent. If the following test does not result as speci-
fied, the starter motor must be replaced.
TESTING VOLTAGE
Perform this test on the starter motor positive terminal.
To access the terminal, slide the boot away.
Component data can be retrieved using the CATT II. Uti-
lize the Sensor Data screen.
Gear Park Neutral Reverse High/Low Fail-Safe Mode
Incorrect ECU/
Gauge (P0630)
Warranty
Registration
(U1001)
2WD
2250 6500
4000
7650 4000 6650 4500
4WD
4WD Lock
2WD Override 5500
4WD Override
7000
Differential-Lock Override
CAUTION
Do not run the engine at high RPM for more than 10 sec-
onds.
CAUTION
Do not run the engine at high RPM for more than 10 sec-
onds.