HELP!!! My Vitz/yaris acting weird - Toyota Yaris Forums

mudi · 10-15-2010, 09:04 AM

I made video of my vitz acting strangely can any one help to fix this problem ...Thanks in advance... my vitz is 2 year old

http://www.youtube.com/watch?v=O6nEgdYWG7o

Betrivent · 10-15-2010, 10:45 AM

That's a computer issue if I've ever seen one.

if I recall you can unplug the battery to reset the ECU.

mudi · 10-15-2010, 11:10 AM

i tried resting ECU but no luck :(

chrisj · 10-15-2010, 11:17 AM

One word...possession.

mudi · 10-15-2010, 11:45 AM

@chrisj lol I also thaught of that too

*Astroman* · 10-15-2010, 12:20 PM

Gotta be electrical, but where?

llewellyn · 10-15-2010, 12:29 PM

CTScott might know what to do..

monchito18 · 10-15-2010, 12:47 PM

idle speed sensor??? thought its a bit weird...

CTScott · 10-15-2010, 01:37 PM

Have you installed a remote starter, alarm system, fog lights, or anything else which would have required tapping wires? The automatic transmission shift supplies a signal to the ECM indicating what position it is in. It is a simple switch that in each position directs a +12V signal to a different wire and the ECM has a pin for each shift position.

If I had to guess, I would say that somehow the brake switch or tail light feed got joined to one of the shift selector output wires and is confusing the ECM.

mudi · 10-15-2010, 01:37 PM

@monchito18 no when its idle its normal when i hit brake it accelerates ...but when i am driving the brake operate normally...but gear indicator goes off...also when i turn on indicator and hit brake while driving indicator turns off... :(

mudi · 10-15-2010, 01:40 PM

@CTScott yes i have installed alarm system and anti theft switch ... but I installed it about six months ago ... if this is a problem can you tell me how to fix it in simple words lol

CTScott · 10-15-2010, 01:44 PM

Quote:

Originally Posted by mudi

@CTScott yes i have installed alarm system and anti theft switch ... but I installed it about six months ago ... if this is a problem can you tell me how to fix it in simple words lol

If the problem just started, and the alarm has been installed for that long, I would look for a damaged or pinched wire. You would need to take the center console out to get at the connectors on the shift lever.

mudi · 10-15-2010, 02:31 PM

@CTScott okie i will get it checked by electrician but here mechanics and electricians sucks specially they dont have knowledge about vitz they treat it as other cars. Thanks for your advice :)

mudi · 10-16-2010, 03:49 AM

@CTScott can you please tell me what ECM stands for?

*tk-421* · 10-16-2010, 05:10 AM

Quote:

Originally Posted by mudi

@CTScott can you please tell me what ECM stands for?

http://en.wikipedia.org/wiki/Engine_Control_Module

mudi · 10-16-2010, 08:44 AM

Quote:

Originally Posted by tk-421

http://en.wikipedia.org/wiki/Engine_Control_Module

thanks :)

mudi · 10-18-2010, 01:11 PM

i got it checked by electrician he disconnected all the accesories but the problem is still there

CTScott · 10-18-2010, 01:20 PM

This is a mighty hard one to diagnose remotely. What does the battery voltage measure before and during the these events?

Also, which automatic transmission does your Yaris have?

10-15-2010, 09:04 AM	#1
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	HELP!!! My Vitz/yaris acting weird I made video of my vitz acting strangely can any one help to fix this problem ...Thanks in advance... my vitz is 2 year old http://www.youtube.com/watch?v=O6nEgdYWG7o

10-15-2010, 11:17 AM	#4
chrisj Hooch Brewer-Shine Sipper View User's Garage Drives: 2009 5-dr LB Join Date: Aug 2010 Location: S. Jesus, Kentucky Posts: 646	One word...possession. __________________

10-15-2010, 12:20 PM	#6
Astroman Modded Moderator View User's Garage Drives: 07 Toyota Yaris, 71 Galaxie Join Date: Mar 2007 Location: Wenatchee, WA Posts: 3,670	Gotta be electrical, but where? __________________ Please visit my online store for computer stuff and Official Yarisworld decals!

10-15-2010, 12:47 PM	#8
monchito18 View User's Garage Drives: Yaris sedan Join Date: Jan 2009 Location: Puerto Rico, Isabela Posts: 427	idle speed sensor??? thought its a bit weird... __________________

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10-15-2010, 10:45 AM	#2
Betrivent Not quite a noob Drives: e46 325 Join Date: Jul 2009 Location: edmonton Posts: 1,408	That's a computer issue if I've ever seen one. if I recall you can unplug the battery to reset the ECU.

10-15-2010, 11:10 AM	#3
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	i tried resting ECU but no luck :(

10-15-2010, 11:45 AM	#5
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	@chrisj lol I also thaught of that too

10-15-2010, 12:29 PM	#7
llewellyn Drives: 04 Echo Join Date: Jan 2009 Location: Canada Posts: 16	CTScott might know what to do..

10-15-2010, 01:37 PM	#9
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Have you installed a remote starter, alarm system, fog lights, or anything else which would have required tapping wires? The automatic transmission shift supplies a signal to the ECM indicating what position it is in. It is a simple switch that in each position directs a +12V signal to a different wire and the ECM has a pin for each shift position. If I had to guess, I would say that somehow the brake switch or tail light feed got joined to one of the shift selector output wires and is confusing the ECM.

10-15-2010, 01:40 PM	#11
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	@CTScott yes i have installed alarm system and anti theft switch ... but I installed it about six months ago ... if this is a problem can you tell me how to fix it in simple words lol

10-15-2010, 02:31 PM	#13
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	@CTScott okie i will get it checked by electrician but here mechanics and electricians sucks specially they dont have knowledge about vitz they treat it as other cars. Thanks for your advice :)

10-16-2010, 03:49 AM	#14
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	@CTScott can you please tell me what ECM stands for?

10-18-2010, 01:11 PM	#17
mudi Drives: Vitz 2005 model Join Date: Jan 2010 Location: Pakistan, Quetta Posts: 19	i got it checked by electrician he disconnected all the accesories but the problem is still there

10-18-2010, 01:20 PM	#18
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	This is a mighty hard one to diagnose remotely. What does the battery voltage measure before and during the these events? Also, which automatic transmission does your Yaris have?