Air charge sensor wiring diagram needed?

Tiny
COACHJAY
  • MEMBER
  • 2016 FORD F-150
  • 3.5L
  • V6
  • 4WD
  • AUTOMATIC
  • 76,000 MILES
Critters ate through some wires. I have fixed all except the purple and yellow ones from the air charge sensor. I don't see where they go into the harness or wherever. I see no broken wires to connect them to.
Tuesday, March 11th, 2025 AT 3:16 PM

6 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,964 POSTS
Do you mean the air temperature sensor that is on the intake duct? The yellow is a ground, the violet is the signal back to the ECU. The wiring should go to a nearby harness.
Or do you mean the Charge air pressure sensor? It has a 4-wire harness not a 2 wire though.
These should point you at the right area though.
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Tuesday, March 11th, 2025 AT 5:18 PM
Tiny
COACHJAY
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  • 4 POSTS
Thank you. Yes. The one on the intake duct. I can find a ground easily enough but the violet wire to a harness may be another story. Any idea which harness and which pin?
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Tuesday, March 11th, 2025 AT 8:34 PM
Tiny
COACHJAY
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  • 4 POSTS
From the diagram it looks like I need to locate PCN 151-2 and the slot c175b.
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Tuesday, March 11th, 2025 AT 8:38 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,964 POSTS
The violet with gray wire goes from the sensor to terminal 75 in Connector 175B You also want the sensor to be connected to the same ground reference as the other sensors, not to engine or chassis ground. It looks like you should find the original wiring if you go to the fender and look for a single piece of harness hanging in the wind, as it has its own pigtail. You don't want to leave that disconnected as it could ground out and cause major problems. It's probably just laying there along the area below the intake duct.
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Wednesday, March 12th, 2025 AT 12:47 AM
Tiny
COACHJAY
  • MEMBER
  • 4 POSTS
Thank you so much. I really appreciate you.
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Wednesday, March 12th, 2025 AT 5:08 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,964 POSTS
You're welcome. We'll be here if you need other assistance. OH and for repairing those wires a good crimp and seal will do the job. Honda sells a tape with capsaicin in it to help with the critters, but I've seen it chewed through.
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Wednesday, March 12th, 2025 AT 4:33 PM

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