Climate control pin needed

1997 MERCURY MARQUIS
85,000 MILES • 4.7L • V8 • 2WD • AUTOMATIC
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BLUTOOTH
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  • 1 POST
There are 2 plugs in the back of the climate control module, can you provide the pin outs for both?
Thanks,
Ron
Mar 15, 2022 at 4:10 AM
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KASEKENNY
  • CAR REPAIR CONTRIBUTOR
  • 18,907 POSTS
No problem. I am attaching the complete wiring diagram below for your review.

Also, here is a guide that will help with this testing in case you need it:

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please run through this and let me know what other questions you have.

Thanks
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Mar 24, 2022 at 5:21 PM
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BLUTOOTH
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When plug 227 was plugged in I got no display, I cut line 15, blend door reference ccw and was able to get the display back and fan control.
What function did I lose?
Mar 24, 2022 at 5:21 PM
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KASEKENNY
  • CAR REPAIR CONTRIBUTOR
  • 18,907 POSTS
Okay. If this circuit is removed, then you have a short in the wire or the blend door actuator has shorted, and it is corrupting the climate control display.

So, I would suggest replacing the actuator if nothing else is found.
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Mar 24, 2022 at 5:24 PM
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.