5-2
Electrical Systems
For testing procedures for specific 4-stroke EFI electrical
system components, refer to the Arctic Cat Diagnostic Sys-
tem Manual or to the Laptop Diagnostic Tool.
All tests of the electrical components should be made
using the digital Fluke Model 77 Multimeter. Replace
any component that does not have a test value within
specifications.
NOTE: Whenever using a digital-style tester, “open
(infinite resistance)” denotes an overload and the
meter reading will be OL since the meter is not cali-
brated to register resistance values of that magni-
tude.
NOTE: Always check the appropriate fuse before
testing a component for failure.
NOTE: Some illustrations and photographs used in
this section are used for clarity purposes only and
are not designed to depict actual conditions.
NOTE: Critical electrical specifications can be
found in Section 1 of this manual.
SPECIAL TOOLS
A number of special tools must be available to the techni-
cian when servicing the electrical systems.
NOTE: Special tools are available from the Arctic
Cat Service Parts Department.
Ignition System (4-Stroke)
NOTE: There must be 0.030-0.060 in. free-play
between the throttle lever and the control housing.
741-518B
TROUBLESHOOTING
1. Remove the spark plugs and visually check their
condition. Replace any fouled plug. Attach the spark
plugs to the high tension leads and ground them to
the engine.
NOTE: Make sure the ignition switch and the emer-
gency stop switch are in the ON position.
2. Crank the engine over and check for spark. If no
spark is present, check to make sure the throttle cable
is properly tensioned. Compress the throttle control
and while holding the throttle control in this position,
crank the engine over and check for spark. If spark is
now present, adjust the throttle cable tension.
3. If no spark is present, the problem is either one or
more of the following:
A. Defective emergency stop switch
B. Defective safety switch in throttle-control hous-
ing
C. Corroded or loose wire connection at the handle-
bar, hood, or main wiring harness
D. Defective ignition switch
NOTE: To check these possible causes, proceed to
the following TESTING sub-section.
Description
p/n
Arctic Cat Diagnostic System Manual
2256-974
Laptop Diagnostic Tool
0744-048
Multi-TPS Test Harness
1686-436
Actuator Test Harness
0644-518
Fluke Model 77 Multimeter
0644-559
MaxiClips
0744-041
Peak Voltage Reading Adapter
0644-307
Starter Assembly Tool
0644-052
Throttle Position Sensor (TPS) Adjustment Tool Kit
3639-891
Test Harness
0686-999
CCU Diagnostic Test Kit
0644-517
CAUTION
Do not ground the spark plug on the cylinder head
cover. The cover is made of magnesium and any con-
tact with spark or electrical arc will severely pit the
surface.
CAUTION
Before checking for spark, place all the engine switches
in the deactivated position. In the event the engine
could be flooded, engage the starter several times to
clear the engine of excess fuel.
CAUTION
Never crank the engine over without grounding the
spark plugs. Damage to coils and/or ECU may result.
Manual
Table of Contents
Содержание Sno Pro 120 2011
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Страница 322: ...Handlebar Harness p n 1686 590 Sno Pro 500 27 0744 200 Table of Contents Manual Diagram Table of Contents...
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