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89 Toyota 4x4 Battery & Break light

kelley
03-04-2005, 11:54 PM
How do you test for a bad diode in an altenator?
davidj92
03-04-2005, 11:54 PM
kelley wrote:
> How do you test for a bad diode in an altenator?

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
Joe
03-04-2005, 11:54 PM
if using an ohm meter you must disconnect the stator first.
Joe


"davidj92" <davidj92@sigecom.net> wrote in message
news:DIudnR0QZphKcLzfRVn-jw@sigecom.net...
> kelley wrote:
>> How do you test for a bad diode in an altenator?
>
> 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
>