Ski-Doo FORMULA III, Shop Manual

Page: 252 / 356

Section 06 ELECTRICAL
Sub-Section 06 (TESTING PROCEDURE)
06-06-3
Engine Stop / Tether Cut-Out Switches
Verification
Engine Stop Switch
Unplug stop switch connector from main harness
then using an ohmmeter, connect test probes to
BLACK / YELLOW and BLACK wires.
Measure resistance, it must be an open circuit in
its operating position and close to 0 ohm when
depressed.
Tether Cut-Out Switch
Unplug tether cut-out switch connector from
main harness then using an ohmmeter, connect
test probes to BLACK / YELLOW and BLACK
wires.
Measure resistance, it must be an open circuit
when cap is over switch and close to 0 ohm when
removed.
Magneto System Verification
System verification can be performed using the
Bombardier ignition tester (P / N 419 0033 00), a
digital ohmmeter or by substituting parts.
USE OF BOMBARDIER IGNITION
TESTER
NOTE : For more information about operat-
ing and maintenance of the tester, refer to its
instruction manual.
Test Condition
All tests are performed on the vehicle at
cranking speed
Vigorous manual cranking against compression
causes the flywheel to snap over, raising the out-
put higher than by cranking without compression,
therefore, do not remove spark plug.
Test values listed are taken against
compression
Always crank vigorously as in actual starting.
Always proceed in the following order :
1. Connect tester P and N clip leads as illustrated
for each specific test.
2. Follow test procedure sequence.
3. After every test that lights the indicator lamp,
reset the indicator circuit by depressing the re-
set button.
Analysis of Test Results
Indicator Lamp Lights at Specific Setting
Output is as specified. Test results should repeat
3 times. If readings do not repeat, output is erratic
and cause should be investigated (loose connec-
tions or components etc.).
Indicator Lamp Lights at Lower Setting
This indicates that the output is less than that de-
signed to operate in a satisfactory manner. How-
ever, before coming to the conclusion of a faulty
condition, be certain that correct engine cranking
conditions were met before condemning the test-
ed part.
Indicator Lamp Does Not Light
One component is defective. Proceed as instruct-
ed to find defective component.
Intermittent Ignition Problems
In dealing with intermittent problems there is no
easy diagnosis. For example, problems that occur
only at normal engine operating temperature have
to be tested under similar conditions.
In most cases of temperature and / or vibration
failure, only parts replacement can solve the prob-
lem as most of these failures return to normal
when engine is not running.
Multiple Problems
There is always the possibility of more than one
faulty part. If after a component has been re-
placed, the problem still persists, carefully repeat
the complete test procedure to find the other
faulty part.
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