A/C BFC fuse?

2004 PONTIAC GRAND AM
208,000 MILES • 3.4L • V6 • 2WD • AUTOMATIC
Avatar
FRODOE45
  • MEMBER
  • 30 POSTS
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?
Mar 28, 2025 at 6:14 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 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.
Image (Click to enlarge)
Attached Media
Mar 28, 2025 at 11:56 AM
Advertisement