How do you test for a bad diode in an altenator?
89 Toyota 4x4 Battery & Break light
Feb 27, 2005
2 Replies
Should have high resistance in one direction and low resistance in the other direction. If low or zero both ways diode is shorted, if high or infinite both ways diode is open. davidj92
if using an ohm meter you must disconnect the stator first. Joe
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