DIY - Bypassing Tire Pressure Warning System (TPWS / TPMS) - Toyota Yaris Forums

eTiMaGo · 11-30-2008, 12:53 AM

interesting... One thing I am curious about, what kind of signal do the sensors give out? Is it just a binary "too low/good" signal or an actual value representing the pressure for each wheel? If it's the second case, it would be quite cool to hack those signals into an actual per-wheel pressure display!

CTScott · 11-30-2008, 01:14 AM

Quote:

Originally Posted by eTiMaGo

interesting... One thing I am curious about, what kind of signal do the sensors give out? Is it just a binary "too low/good" signal or an actual value representing the pressure for each wheel? If it's the second case, it would be quite cool to hack those signals into an actual per-wheel pressure display!

The sensors transmit a packet with their ID, pressure, and temperature. Hacking the protocol would be an interesting project...

linny · 11-30-2008, 10:16 AM

Thank you for putting so much effort into this modification CTSCOTT. I will make a trip to Radio Shack when they open this morning!

CTScott · 11-30-2008, 10:30 AM

Quote:

Originally Posted by linny

Thank you for putting so much effort into this modification CTSCOTT. I will make a trip to Radio Shack when they open this morning!

I realize that this solution is a bit more work than the original cut two wires one, so if anyone needs to do this and doesn't have the equipment, etc. to solder it up, I can make it up and ship it as a nice little kit.

ivanmadeline · 11-30-2008, 01:25 PM

Thanks for all the work CTSCOTT I just got back from Radio Shack with all the items. I hope that this time it all works.

11-30-2008, 12:53 AM	#1
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	interesting... One thing I am curious about, what kind of signal do the sensors give out? Is it just a binary "too low/good" signal or an actual value representing the pressure for each wheel? If it's the second case, it would be quite cool to hack those signals into an actual per-wheel pressure display! __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

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11-30-2008, 10:16 AM	#3
linny Drives: '08 liftback mt Join Date: Nov 2008 Location: Mn Posts: 39	Thank you for putting so much effort into this modification CTSCOTT. I will make a trip to Radio Shack when they open this morning!

11-30-2008, 01:25 PM	#5
ivanmadeline View User's Garage Drives: 2008 Yaris (Sedan) Join Date: Oct 2008 Location: NC Posts: 61	Thanks for all the work CTSCOTT I just got back from Radio Shack with all the items. I hope that this time it all works.