How To Test An Alternator For A Short. Alternator Short Circuit Test. An electrical short can damage electronics cause fluctuations in outlets and even cause fires or dangerous shocks.
Your voltmeter should read 0. If you test the end of the wire to ground you should have battery voltage at all times. With the wire removed and a jumper between it and the stud there should be no volt reading with the ignition off.
Ninety-nine out of one-hundred diodes will short rather than open when they fail.
There should be 12V at the. What happened was i was undoing the positive post on the alternator and forgot to disconnect the battery and bumped it against the body of the alternator. Have your assistant start the cars engine and let it run for a few minutes at 1200 RPM. What is The Alternator Field Current.
