Testing Procedure - BOMBARDIER Skandic 377 IR Shop Manual

BOMBARDIER IGNITION TESTER
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GENERAL
The Bombardier ignition tester is an electrical energy
measuring device capable of measuring the peak energy
output of a coil.
The tester is of solid state construction and performs as
a comparator . The correct value of energy output is in-
dicated in each test and is then compared with the value
taken from the engine being tested.
The energy output is verified by means of a 0-100 scale
on the tester. The greater the energy output, the greater
value indication on the scale. The indication is in the
form of an incandescent lamp that lights when the scale
knob is set at the position corresponding to the energy
output.
The tester has two input ranges selected by a toggle
switch . The LOW range is sensitive to AC or DC volt-
ages from 0.5 to 27 volts. The HIGH range is sensitive to
AC or DC voltages of from approximately 75 to 500 volts.
TEST CONDITION
All tests are performed on the vehicle at cranking speed.
Vigorous cranking against compression causes the fly-
wheel to snap over, raising the output 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.
Read all instructions thoroughly and as you become
familiar with this test instrument it will be possible to
test a complete ignition system in a matter of minutes.
Always proceed in the following order:
1. Connect tester P and N clip leads as illustrated .
2. Follow test procedure sequence.
3. After every test that lights the indicator lamp, reset
the indicator circuit by depressing the reset button.
SECTION 04 ELECTRICAL
SUB-SECTION 06 (TESTING PROCEDURE)
TESTING PROCEDURE
ANALYSIS OF TEST RESULTS
Indicator lamp lights at specific setting
Output is as specified. Test results' should repeat three
times. If readings do not repeat, output is erratic and
cause should be investigated (loose connections or
components, etc.).
Indicator lamp lights at lower setting
This indicates that the output is less than that designed
to operate in a satisfactory manner. However, before
coming to the conclusion of a faulty condition be cer-
tain that correct engine cranking conditions were met
before condemning the ignition.
Indicator lamp does not light
One component is defective. Proceed as instructed 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 temperatue have to be tested
under similar conditions.
In most cases of temperature and/or vibration failure,
only parts replacement can solve the problem as most
of these failures return to normal when engine is not
running.
Double trouble
There is always the possibility of more than one faulty
parts. If after a component has been replaced, the pro-
blem still persists, carefully repeat the complete test
procedure to find the other faulty part. .
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