10.2
Connect the common lead from the ACCUTEK III to a good,
clean engine ground.
10.3
Connect the HV-TEST output to the point to be monitored
(i.e. ignition coil positive terminal, terminal strip, ignition
coil junction box, etc).
With the engine running the ACCUTEK III should be displaying in
microseconds how long the primary voltage associated with the point
being tested remains over 40 volts.
TRANSFER readings less than 5 microseconds will cause the ACCUTEK III
to display “LLL”. This reading usually indicates a short in the ignition system.
TRANSFER readings greater than 500 microseconds will cause the
ACCUTEK III to display “HHH”. This reading usually indicates an
open or high resistance path in the ignition system.
The most informative place to perform a TRANSFER test would be at each
ignition coil. This test is easily accomplished in unshielded ignitions but
somewhat more complex with shielded systems. Innovative Technical
Solutions has developed a new adaptor that will allow easy access (24T-
ALT). When testing unshielded systems, simply connect the positive lead
from HV-TEST to the positive primary ignition coil wire. Performing the test
at this point ensures that you are taking into account the ignition source and
all of the associated primary wiring. With the engine running, the LCD will
display the pulse duration of firing events being delivered to that ignition coil.
Compare this reading with results from all other primary leads. If you are test-
ing a shielded ignition system, connect to the junction box located closest to
the shielded ignition coil under test.
The TRANSFER test can also be performed on each individual primary lead
at the junction box. All readings should be relatively close in value. A sub-
stantial difference in one or more readings could indicate faulty wiring, defec-
tive ignition source, defective ignition coil etc.
www.
.com
1.800.561.8187
