Regulator/Rectifier; Neutral Start/Front Drive Actuator/Start-In-Gear/Differential Lock/2Wd Relays; Headlights; Taillight - Brakelight - Arctic Cat 08 ATV Service Manual

FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
The ECU is rarely the cause for electrical problems;
however, if the ECU is suspected, substitute another
ECU to verify the suspected one is defective.
Error codes can be cleared by following the procedures
located in the ECU Error Codes sub-section in this
section.

Regulator/Rectifier

The regulator/rectifier is located under the rear rack
and rear fenders.
TESTING
1. Start engine and warm up to normal operating
temperatures; then connect a multimeter to the bat-
tery 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
voltage should increase with the engine RPM to a
maximum of 15.5 DC volts.
NOTE: If voltage rises above 15.5 DC volts, the
regulator is faulty or a battery connection is loose
or corroded. Clean and tighten battery connec-
tions or replace the regulator/rectifier. If voltage
does not rise, check Voltage (Charging Coil - No
Load) in this section. If charging coil voltage is
normal, replace the regulator/rectifier.
Neutral Start/
Front Drive Actuator/
Start-in-Gear/
Differential Lock/
2WD Relays
The relays are identical plug-in type located on the
power distribution module. Relay function can be
checked by switching relay positions. The relays are
interchangeable.
NOTE: The module and wiring harness are not a
serviceable component and must be replaced as
an assembly.
www.mymowerparts.com
Back
Back to TOC

Headlights

The connectors are the four 2-prong ones secured to
the front bumper supports (two on each side) with
cable ties.
BULB VERIFICATION
(Low and High Beam)
NOTE: Perform this test on each headlight bulb.
Also, a 12-volt external power supply with jumpers
will be needed.
1. Disconnect the wiring harness from the bulb to be
tested.
2. Connect the power supply (positive) to one bulb
contact; then connect the power supply (negative)
to the remaining bulb contact.
3. The bulb should illuminate.
4. If the bulb fails to illuminate, it must be replaced.
VOLTAGE
NOTE: Perform this test in turn on the main har-
ness side of all four connectors. Also, the ignition
switch must be in the LIGHTS position.
NOTE: The LO beam is the outside bulb, and the
HI beam is the inside bulb.
1. Set the meter selector to the DC Voltage position.
2. Connect the red tester lead to one wire; then con-
nect the black tester lead to the other wire.
3. With the dimmer switch in the LO position, test
the two outside connectors (LO beam). The meter
must show battery voltage.
4. With the dimmer switch in the HI position, test the
two inside connectors (HI beam). The meter must
show battery voltage.
NOTE: If battery voltage is not shown in any test,
inspect the fuses, battery, main wiring harness,
connectors, or the left handlebar switch.

Taillight - Brakelight

The connector is the 3-prong one located under the
rear fender assembly.
Back to Section TOC
5
Next
5-13