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Presented by Bob Pattengale
BOSCH MTS 5200 LAB SCOPE
1-800-71-TRAIN (1-800-718-7246) OR www.auto-video.com
LIVE VEHICLE TESTING (SECONDARY IGNITION COP WAND)
You can see in the screen capture above that this vehicle has a multi-strike ignition system as
indicated by the three firing patterns in the waveform. The first thing we need to look at is the
primary (1st strike) ignition pattern of each ignition coil. As we move from coil to coil we can
determine that all of the coils are firing correctly giving us a known good pattern for our
database.
To simulate a fault the instructor has removed the
bolts that secure the ignition coil to the engine
and begins to move the coil away from the engine.
As this is done, you can see that the burn time
begins to shorten up as it is moved further away.