Electrical Issue No Comms to Power steering Module, ABS Module

Tiny
WILLAUTO333
  • MEMBER
  • 2011 FORD F-150
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
2011 Ford 150 3.5L

my problem occured after adjusting my driver seat I felt a tugging underneath the seat turns out it was an exposed wire that I believe was a restraint sensor, the airbag light came on dash and I instantly lost power steering. I fixed the connection under the seat so no more exposed wiring. The airbag light instantly came off the dash. I scanned the vehicle and got no communication from the power steering module, and abs. My thought is maybe I fried the powersteering angle sensor? But I'm not sure if this can effect both abs and power steering module. I checked all fuses they seem too be tested good with a test light
Monday, January 27th, 2025 AT 4:21 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,348 POSTS
Yep, it does sound like something got shorted, if a sensor was damaged it would not cause non communication issues. To me it sounds like the BCM got hurt or the fusible links that power the BCM got popped. Here are the wiring diagrams so you can see what I am talking about. Here is the fusible link A and B location and you might want to just test for power at the wire I marked in red. Check out the images (below). Please let us know what happens.
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Tuesday, March 4th, 2025 AT 11:33 AM
Tiny
WILLAUTO333
  • MEMBER
  • 2 POSTS
I found out that I had multiple problems, and it was coincidental that my seat sensor messed up at the same time it was a separate issue.

The problem I had turned out to be a bad ground connection on a TCM input connector underneath the truck had to remove panel to get access to it. If I can get pictures I will as soon as I added a piece of foil to it, (i don't recommend this) lol the completed the ground and the dash display instantly went to normal and no power steering issues etc.
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Tuesday, March 4th, 2025 AT 12:28 PM
Tiny
KEN L
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  • 54,348 POSTS
Yep, the downside of being a mechanic, "coincidence" you can see how this would be a problem, glad you found the issue. Can you double check the ground? I don't see a TCM in this truck, only a PCM?
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Wednesday, March 5th, 2025 AT 8:36 AM

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