Ford F150 Check BRAKE system warning DIY - ABS code C109E BRAKE pressure sensor circuit fix

The brake warning system and ABS light were on in the Ford F150. ended up being a brake pressure sensor circuit fault.
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[@Victor.Alcala]

excellent video, thank you very much for the information, how do I change the sensor???

[@giff1011]

What was your resistance value to rule out a bad sensor?

[@AcousticHills]

Hey there, I didn't test resistance. Found a bad 5v ref circuit which was the problem.

[@giff1011]

Gottcha. Would you happen to know the resistance range? Appreciate your help.

[@AcousticHills]

@@giff1011 sorry I don't. But if your 5vref, ground and signal circuits are good, then you have a bad sensor.

[@giff1011]

No worries. I actually have a 2009 F-150 in which the abs module needed repair. Well that repair didn’t fix the problem and come to find out my pressure transducer also failed. So I rolled the dice on a 2010 unit the because I wasn’t about to spend 5-6x more for a 09 unit. Both are 4x2 and HCU pump assembly are the same part number and bolted right in. What I didn’t know and found out last night when installed the 2010 unit is they have a brake booster vacuum sensor. The 2009 didn’t have it. So where I am now is trying to figure out the nominal resistance value of that sensor at 5v so I can modify the “new” unit into thinking I have a good sensor. I don’t have computer capable of modifying the ABS controller module otherwise I just do that. Thx again for helping and if you happen to find that number please let me know I appreciate it. Take care

[@AcousticHills]

@@giff1011 ah ok, can you just grab one from a junk yard truck and wire it in?