More sophisticated testing equipment is needed to detect an open or shorted alternator diode. Bring your vehicle to your ...

If the alternator does produce the correct voltage, move on to the diode test. The diodes are the electronic part of the ...

Here's how to test for a bad diode with nothing more ... You can replace the diodes in the alternator fairly easily, or just swap in a rebuilt alternator if one is available fairly cheaply for ...