Alternator not charging

1998 MAZDA PROTEGE
10,000 MILES • 4 CYL • 2WD • MANUAL
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THEUNIS
  • MEMBER
  • 1 POST
tested alternator passed, new battery, checked fuses, alternator wont charge. checked wires to plug into alternator one shows 3 volts with vehicle running other shows nothing.
Nov 2, 2019 at 1:51 PM
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KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
Okay. More than likely you have a PCM issue at this point. The PCM contains the voltage regulator for this vehicle so here is a test that should confirm this. However, worst case I would put a PCM in it and go from there.
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Nov 2, 2019 at 8:09 PM
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