Testing Ignition System - Arctic Cat Wildcat EFI 1994 Service Manual

Testing Ignition System
The ignition system used on this model (KOKUSAN
DENKI COl) is of the "closed" type. The "closed"
ignition system offers a
safety
advantage to the
consumer in that the ignition is dependent on a
complete circuit for its ground. If the circuit is bro ­
ken (connection should lose contact or a connector
should become pulled apart), ignition is lost and the
engine will instantly stop.
The troubleshooting procedure for the "non-closed"
ignition system cannot be used when troubleshoot ­
ing the "closed" ignition system. Instead, use the
following procedure.
1. Remove the spark plugs and visually check
their condition. Replace any fouled plugs.
Attach the spark plugs to the high tension leads
and ground them on the cylinder head(s).
Never crank the engine over without grounding the
spark plugs. Damage to coils and/or COl unit may
result.
&
WARNING
Before performing step 2, leave switches in the OFF
position and crank the engine over to clear engine
of fuel in the event is is flooded. Clean area of any
fuel that comes out the spark-plug holes with a
clean cloth. While performing step 2, hold the
throttle lever in the full-open position to prevent
fuel from being injected into the engine.
NOTE: Make sure all switches are in the
•
ON position and the tether-switch cap is
installed.
2. Crank the engine over quickly and check for
spark. If no spark is present, proceed to step 3.
3. Below are some causes that can create a
no-spark situation. If no-spark situation occurs,
refer to the causes below for assistance in
locating the problem.
a. Fouled Spark Plugs - Inspect spark plug
condition and replace if necessary.
b. Discharged Battery - Insp~ct battery condi ­
tion, remove battery and recharge if neces ­
sary.
c. Bad Brown Fuse Link Wire - Test fuse link
wire according to procedure found in EFI
Fuel System section of this manual.
d. EFI Relay - Check EFI relay according to
procedure found in EFI Fuel System section
of this manual.
e. Throttle Cable Tension Too Tight - Loosen
cable to obtain 0.030 free play in throttle
lever.
f. Defective Ignition Switch
proper operation.
- Test switch for
g. Defective Tether Switch - Test tether switch
for proper operation.
h. Defective Safety Switches in Throttle Con ­
trol Handle - Test switches following proce­
dures in this section.
i. Defective Ignition Coils (charge coils -
external coil) - Perform resistance test
according to procedures in this section.
j.
Defective Timing Sensor - Test sensor
according to procedure in this section.
k. Defective ECU or bad connection in wiring
harness.
I.
Corroded or loose wire connection at the
throttle-control wiring harness connector,
ignition switch, tether switch, or main wiring
harness.
Check all these possible causes following the test
procedures given in the EFI Fuel System and Elec ­
trical sections of this manual. Starting with cause
"a", work your way down through "I" until the prob­
lem is found .
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