DIY - Bypassing Tire Pressure Warning System (TPWS / TPMS) - Page 6 - Toyota Yaris Forums

gwasabi · 05-19-2009, 05:21 PM

no i think u gotta put resisters in between?

CTScott · 05-19-2009, 05:39 PM

Quote:

Originally Posted by Taiyaki

Ok so to get rid of it without a switch all you have to do it start off with the light not on, turn off the car, unplug the thing, and cut the green and brown wire and connect them to eachother, and leave the harness unplugged?

Jump to post 45 and you'll see the resistor voltage divider. You need to make one of those up. Clipping the wires turned out to not work.

Taiyaki · 05-20-2009, 03:56 AM

Ok i think ill just put a switch in it.

CTScott · 05-20-2009, 07:34 AM

Quote:

Originally Posted by Taiyaki

Ok i think ill just put a switch in it.

Just to clarify; adding the switch doesn't really make it any easier. If you want to do it without the switch, you build the voltage divider shown below (from page 3 of this thread). You unplug the TPWS connector (and leave it disconnected) and connect the red wire to the red wire show below, the black wire to the white wire shown below, and you connect the green wire to the brown wire below.

The switch method is just for people who run two sets of rims with one of the two sets still having the sensors installed.

Taiyaki · 05-25-2009, 10:42 PM

Ok so a few days ago I did this. I added a switch. And it worked perfect for a few days. But now the light flashes and when I turn the switch off is stays on (doesn't flash).

CTScott · 05-25-2009, 10:48 PM

Quote:

Originally Posted by Taiyaki

Ok so a few days ago I did this. I added a switch. And it worked perfect for a few days. But now the light flashes and when I turn the switch off is stays on (doesn't flash).

Measure the voltage on the brown wire.

regal · 05-26-2009, 05:48 AM

I'm not getting any voltage off the brown, white, or red wire, where is the fuse for this thing?

CTScott · 05-26-2009, 06:21 AM

Quote:

Originally Posted by regal

I'm not getting any voltage off the brown, white, or red wire, where is the fuse for this thing?

It's the ECU-IG 10A fuse.

regal · 05-26-2009, 06:29 AM

Thanks where would that be located?

CTScott · 05-26-2009, 07:34 AM

Quote:

Originally Posted by regal

Thanks where would that be located?

In the fuse panel that faces the driver's side floor mat at the bottom left of the dash.

regal · 05-26-2009, 07:43 AM

Quote:

Originally Posted by CTScott

In the fuse panel that faces the driver's side floor mat at the bottom left of the dash.

looks like I'm buying an 09 service manual there is no such fuse in that location

CTScott · 05-26-2009, 07:47 AM

Quote:

Originally Posted by regal

looks like I'm buying an 09 service manual there is no such fuse in that location

TIRE AND WHEEL TIRE PRESSURE WARNING SYSTEM ECU Power Source Circuit (2009 Yaris).bmp

regal · 05-26-2009, 07:59 AM

nothing there but I butch of relays, no fuses

regal · 05-26-2009, 08:54 AM

are these odd ball fuses or something?

CTScott · 05-26-2009, 09:17 AM

Quote:

Originally Posted by regal

are these odd ball fuses or something?

You're looking in the wrong place. Lay on the floor and look up at the bottom of the dash (directly under where you are looking). You'll see a plastic panel with the fuse locations. Pull that plastic cover off and the fuses will be visible.

regal · 05-27-2009, 06:19 AM

found it thanks a bunch

regal · 05-28-2009, 09:14 AM

but now when I turn my headlights on the instrument panel goes dim, under daytime running lights the dash is illuminated, very odd and can't find anything in the owners manual.

CTScott · 05-28-2009, 09:40 AM

Quote:

Originally Posted by regal

but now when I turn my headlights on the instrument panel goes dim, under daytime running lights the dash is illuminated, very odd and can't find anything in the owners manual.

That's the normal behavior for the instrument panel lighting - Full bright with headlights off and dimmed, per the knob, with headlights on.

05-19-2009, 05:21 PM	#91
gwasabi View User's Garage Drives: 07 Blazing Blue LB Join Date: Jun 2007 Location: Honolulu, Hawaii Posts: 692	no i think u gotta put resisters in between? __________________ Most Satisfying Crew Serious Business... MunkyWurks Garage - 8088488794

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Tire pressure sensors	Tink1	Wheels, Tires and Suspension Forum sponsored by The Tire Rack	11	10-21-2008 05:53 PM
Intake Systems Decision Maker..	Blenjar	Performance Modifications	25	09-15-2007 10:07 PM
The Tire inflation debate...	Tankota	General Yaris / Vitz Discussion	20	06-01-2006 07:09 PM

05-20-2009, 03:56 AM	#93
Taiyaki アキバ製 View User's Garage Drives: 09' White LB, Celica GTS Join Date: Apr 2009 Location: Honolulu, HI Posts: 524	Ok i think ill just put a switch in it.

05-25-2009, 10:42 PM	#95
Taiyaki アキバ製 View User's Garage Drives: 09' White LB, Celica GTS Join Date: Apr 2009 Location: Honolulu, HI Posts: 524	Ok so a few days ago I did this. I added a switch. And it worked perfect for a few days. But now the light flashes and when I turn the switch off is stays on (doesn't flash).

05-26-2009, 05:48 AM	#97
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	I'm not getting any voltage off the brown, white, or red wire, where is the fuse for this thing?

05-26-2009, 06:29 AM	#99
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	Thanks where would that be located?

05-26-2009, 07:59 AM	#103
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	nothing there but I butch of relays, no fuses

05-26-2009, 08:54 AM	#104
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	are these odd ball fuses or something?

05-27-2009, 06:19 AM	#106
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	found it thanks a bunch

05-28-2009, 09:14 AM	#107
regal Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009 Location: PA Posts: 432	but now when I turn my headlights on the instrument panel goes dim, under daytime running lights the dash is illuminated, very odd and can't find anything in the owners manual.