A/C BFC fuse?

Tiny
FRODOE45
  • MEMBER
  • 2004 PONTIAC GRAND AM
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 208,000 MILES
Car wouldn't start. Found out that the A/C BFC fuse was blown, replaced it and it fired right up. How and why? Left out the A/C compressor relay, fuse still blew and unhooked the compressor connector, fuse still blew. So, according to compressor wiring diagram I need the wiring diagram for all the wires that go to the compressor circuit. In other words, what does it look like where the wires are coming from, that diagram?
Friday, March 28th, 2025 AT 6:14 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,321 POSTS
That's a good one, with the relay removed there is no connection to the PCM. The PCM triggers the relay. Here the wiring be tampered with? The circuit is open without the relay. Check out the images (below). Please let us know what happens.
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Friday, March 28th, 2025 AT 11:56 AM

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