Itm Accutek III, Руководство по эксплуатации

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Before replacing an ignition supply that is thought to be defective, verify that
the ignition wiring and all connections relating to the ignition system are in
good condition. Also with solid state systems, verify incoming signals and
D.C. power to the module are correct.
Partial shorts in the wiring harness upstream or downstream of the test point
would result in lower than expected readings as the current intended for the
ignition coil would now have an easier path to ground. (Zero if fully shorted.)
Readings below 5 microseconds will cause the ACCUTEK III display to alter-
nate between actual reading and “LLL”.
Resistance in the wiring harness downstream of the test point would result in
higher than expected readings. Readings above 500 microseconds will cause
the ACCUTEK III display to alternate between actual reading and “HHH”.
Resistance in the wiring harness upstream of the test point would usually result
in readings lower than expected.
Section 11
Energy
The function of an ignition system – by definition – is to ignite the air
fuel mixture in the combustion chamber at the desired time. To accom-
plish this, the ignition source (mag or module) must be able to deliver
sufficient energy to each of the ignition coils on the engine at the appro-
priate time.
A fully functional ignition harness must be capable of delivering energy
generated by the ignition source to the intended ignition coil with mini-
mal loss. The ignition coil then converts this low voltage, high current
pulse to a low current very high voltage supply. Secondary voltage loss-
es may be caused by resistance in the ignition wiring, eg. loose connec-
tions, defective components, poor grounds etc. Other types of losses
could be due to leakage caused by chafed or cut primary wiring allow-
ing the ignition source energy back to ground before reaching the igni-
tion coils.
Energy level measurements are a product of peak measured voltage and
pulse duration. Therefore, measurements between individual primary
circuits should be relatively consistent if TRANSFER and PEAK
VOLTS results are consistent.
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