Throttle Position Controller - Toyota Yaris Forums

SolidGamble · 03-21-2012, 01:39 AM

I think my TPS has gone bad, the CEL code 2120 and 2121 keep popping up and my gas pedal loses all sensetivity. After I clear the code with my Scangauge, the car goes back to normal, until the code gets thrown again, usually under hard cornering. Any suggetions for a fix?

09sedan · 03-21-2012, 07:52 AM

under hard cornering? could be a bad connection or ground somewhere?, check your battery and fuse box grounds along with your ECM grounds, then check connectors for corrosion, also check the cabling at the pedal, could just be a loose connector?

SolidGamble · 03-21-2012, 02:05 PM

I'll check it out, thanks for the advice.

09sedan · 03-21-2012, 06:06 PM

let us know whats going on , take pictures of areas that i mentioned and post em up. we might be able to see something.

SolidGamble · 03-24-2012, 05:58 PM

All wires are snug and there doesn't seem to be any corrosion. all looks brand new.

09sedan · 03-24-2012, 06:08 PM

take to a dealer and get em to replace it under warranty, if ur out of warranty go and scream at them and tell em that its dangerous bla bla your life at risk bla bla complain to head office of toyota bla bla and try to get them to replace it for free even if its out of warranty ( or cover most of the cost) and pray it aint too expensive if you have to pay for the whole thing

RedRide · 03-25-2012, 12:19 PM

Yes.... this is definately a serious safety issue and Toyota should address it.

My advise would be to first go to the dealer and relate the problem. If that that gets no results, contact Toyota corporate ASAP!
With all the past publicity of the gas pedal problems, I susupect that the dealer will take care of it.

bobolinko · 03-25-2012, 02:39 PM

Before you take it to a dealer, try this:

Near the throttle pedal, there is a connector with aprox 4 wires that is very close to the firewall. remove and re-insert the connector. When you get it apart, get some DAMPENED micro fiber cloth and wipe the pins that insert into the plug. I had the same problem and it was a loose connection/poor contact in the tps connector. Please do it quickly! Mine started with the dead-pedal scenario and one day went to full throttle without my doing anything. After cleaning and redoing the contacts, I have not had it reoccurr. you need to squese the connector lock in order to take the plugs apart. It's really simple but you need to squeese hard. I used a 4 1/2 inch channel lock plier to do it.
http://www.amazon.com/Channellock-42.../dp/B00004SBCR

03-21-2012, 01:39 AM	#1
SolidGamble View User's Garage Drives: 2007 Yaris Sedan Join Date: Nov 2010 Location: San Diego, CA Posts: 33	Throttle Position Controller I think my TPS has gone bad, the CEL code 2120 and 2121 keep popping up and my gas pedal loses all sensetivity. After I clear the code with my Scangauge, the car goes back to normal, until the code gets thrown again, usually under hard cornering. Any suggetions for a fix?

03-25-2012, 02:39 PM	#8
bobolinko Bob Drives: Yaris and Scion XD 5 spd BSP Join Date: Dec 2009 Location: Was Hawaii - Moved to Everett WA Posts: 145	TPS problem... Before you take it to a dealer, try this: Near the throttle pedal, there is a connector with aprox 4 wires that is very close to the firewall. remove and re-insert the connector. When you get it apart, get some DAMPENED micro fiber cloth and wipe the pins that insert into the plug. I had the same problem and it was a loose connection/poor contact in the tps connector. Please do it quickly! Mine started with the dead-pedal scenario and one day went to full throttle without my doing anything. After cleaning and redoing the contacts, I have not had it reoccurr. you need to squese the connector lock in order to take the plugs apart. It's really simple but you need to squeese hard. I used a 4 1/2 inch channel lock plier to do it. http://www.amazon.com/Channellock-42.../dp/B00004SBCR

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
NEED ENGINE CHECK LIGHT CODE LIST	Attitude	Forced Induction Forum	12	04-11-2011 06:38 PM
3 Drive Throttle Contoller by NTD	Sabretooth	Performance Modifications	31	10-07-2010 12:12 PM
Group Buy for NTD 3Drive throttle controller	twpanson	Sponsors Classifieds Area	35	11-17-2009 10:18 PM
Blitz throttle controller	808_Yaris	Performance Modifications	43	10-22-2009 04:36 AM
Throttle position used as cruise control? HELP	Appalachian Trail 2007	Performance Modifications	11	11-09-2008 11:10 PM

03-21-2012, 07:52 AM	#2
09sedan Drives: 2009 yaris sedan Join Date: Apr 2011 Location: toronto Posts: 141	under hard cornering? could be a bad connection or ground somewhere?, check your battery and fuse box grounds along with your ECM grounds, then check connectors for corrosion, also check the cabling at the pedal, could just be a loose connector?

03-21-2012, 02:05 PM	#3
SolidGamble View User's Garage Drives: 2007 Yaris Sedan Join Date: Nov 2010 Location: San Diego, CA Posts: 33	I'll check it out, thanks for the advice.

03-21-2012, 06:06 PM	#4
09sedan Drives: 2009 yaris sedan Join Date: Apr 2011 Location: toronto Posts: 141	let us know whats going on , take pictures of areas that i mentioned and post em up. we might be able to see something.

03-24-2012, 05:58 PM	#5
SolidGamble View User's Garage Drives: 2007 Yaris Sedan Join Date: Nov 2010 Location: San Diego, CA Posts: 33	All wires are snug and there doesn't seem to be any corrosion. all looks brand new.

03-24-2012, 06:08 PM	#6
09sedan Drives: 2009 yaris sedan Join Date: Apr 2011 Location: toronto Posts: 141	take to a dealer and get em to replace it under warranty, if ur out of warranty go and scream at them and tell em that its dangerous bla bla your life at risk bla bla complain to head office of toyota bla bla and try to get them to replace it for free even if its out of warranty ( or cover most of the cost) and pray it aint too expensive if you have to pay for the whole thing

03-25-2012, 12:19 PM	#7
RedRide Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009 Location: Middletown, NY Posts: 1,501	Yes.... this is definately a serious safety issue and Toyota should address it. My advise would be to first go to the dealer and relate the problem. If that that gets no results, contact Toyota corporate ASAP! With all the past publicity of the gas pedal problems, I susupect that the dealer will take care of it.