Mobile Generator Electrical Testing Techniques
wc_tx000699gb.fm 23
3.4 Probing ECM Plugs and Pins
See Graphic: wc_gr002926
To measure the voltage at an ECM pin, attach an appropriate
extension (a) to the positive probe on your multimeter. Slide the
positive probe into the plug along the wire of the pin to be tested. Use
care when testing this way so you don’t damage the wire, plug, or
ECM. Find a suitable ground on the machine’s frame for the negative
probe (b) of your multimeter.
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