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Electrical Cooling System Troubleshooting

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Old May 31, 2025 | 09:14 PM
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Jwormy's Avatar
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Lightbulb Electrical Cooling System Troubleshooting

Hi Everyone, new to the forum, thanks for having me. I searched through the many previous messages and wasn't able to find a solution to my problem so here it is...
Today, all at once My AC, Radiator fan, and Cooling fan all stopped operating.
  • AC Compressor will not turn on when hitting the AC button, or putting on Defrost setting, but blower fan works.
  • Radiator Fan will not turn on after car is warm, either at idling or driving.
  • Cooling fan will not turn on.
  • Everything else works as expected, no dash lights.
  • Relays are all good and receiving power. Individual items will turn on and spin normally when jumper cable is inserted into each.
  • No blown fuses that I can see.
  • AC Pressure is good.
  • ECT is reading as it should although radiator fan won't turn on when it reaches temp.
I'm sure it's not a coincidence that all three of these items are located in the same relay box...What's my next troubleshooting steps here?
Thanks for reading,

2013, 105k miles
Jess
 
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