IsToyota Avalon 2002 alternator working?

Asked by GuruDZ1DDX Dec 10, 2023 at 11:54 PM about the 2002 Toyota Avalon XL

Question type: Maintenance & Repair

There has to be a voltage feed back to the alternator to regulate 12v for the
load variations. Where is the voltage  feed back coming from?.

1 Answer
40,525

beatupchevy answered about a year ago

A multi meter is useful for such things , You want 14+ volts while running at the battery . One of the wires gives the internal regulator a signal . An alternator does not produce voltage unless some is applied to create a magnetic field fyi

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