SX4 : Throttle Body Adjustment on drive by wire

sudev · 20th July 2010, 07:43

This reset is something new. Will try it next time I need to.

Battery reset is common to all new gen cars using drive by wire tech. SX4 and GV have no mechanical connection between accelerator pedal and throttle body. Just electric wires to drive a servo motor.

OT:
Throttle Body Reset - Could it have happened at a place worse than this? http://www.team-bhp.com/forum/travel...ml#post1958074

vigsom · 20th July 2010, 21:10

Quote:

Originally Posted by joel.chandra

Hi Folks. I replaced my batter yesterday and had terrible time since the guy who did this did not know about the Drive by Wire. Now my RPM at idle is 500 which sometimes is stalling the vehicle. I am going to reset this immediately and will share my experience again.

Quote:

Originally Posted by avigster

Absolutely true. happenned to my SX4 too. it seems when you disconnect the batterry for more than a few couple of minutes, throttle body is reset & that would essentially cause stalling problems.

I belive it's a common problem with SX4. Why was the batterry disconnected ? it's fairly a couple of minutes job to reset it to what it was before...nothing to worry about!

The problem of low rpm gets rectified automatically after some driving(say 1 hr) once the ECU gets fresh data ; please check and revert

avigster · 21st July 2010, 22:40

Quote:

Originally Posted by vigsom

The problem of low rpm gets rectified automatically after some driving(say 1 hr) once the ECU gets fresh data ; please check and revert

Not sure about the problem getting rectified automatically after an hour of driving, but for sure it was heck of an easy job to resynch the throttle-body. Unfortunately cant check, sold the car in January!

allajunaki · 22nd July 2010, 13:57

Ok, Perhaps a bit off topic, but does the new swift have Throttle by wire ? Since it now has the K-Series Engine of Ritz, which has Throttle by wire ( As far as I know).

And if it does, then can we do the same reset procedure as elaborated here?

raghu.t.k · 22nd July 2010, 14:31

Quote:

Originally Posted by vigsom

The problem of low rpm gets rectified automatically after some driving(say 1 hr) once the ECU gets fresh data ; please check and revert

Im not sure how long this would take, but is a real pain and sometimes dangerous while driving in the City. This happend to me when I took my SX4 to Cars India at Adyar, since rat or some other rodents decided to taste the wires connecting the ABS sensors, and gnawed them off. While fixing this they had removed the battery leads reconected once the wires were fixed. After this at every turning I had to be extremely careful, else the car would stall and steerings lock while turning. Finally took it back in the evening, not sure what was done, but managed to get it fixed.

sudev · 27th July 2010, 07:25

UPDATE: After reading this thread I started wondering if some how my GV's problem could be linked to such a reset.

Problem: The car would take two or three long turns of cranking to start. Every time. Hot or cold. There was no problem with idling speed tick over.

Solution: Followed the procedure described. Key at Ign. Full press of accelerator. Key off. Release accelerator. Wait. Start the car. Starts at first try with normal cranking.

Thanks for the links and bringing this procedure to attention.

Observation: When ever you do ECM reset (by removing battery or this procedure) before starting the engine again switch off all lights and a/c. And above all do not touch the accelerator when cranking the engine. Most of the mechs do not understand the last part and press the accelerator a "wee" bit when cranking the engine. This throws ECM off and results in engine not idling properly.

Also I have seen stickers pasted on the dashboards of new cars which say "Do not press accelerator when starting" Normally this is ignored but is important for fly-by-wire ECM plus throttle body systems.

@allajunaki: AFAIK it should be same procedure. In any case removing battery terminal and reconnecting after some time works.

rkbharat · 27th July 2010, 08:58

time for me to try this. will do it today

zoombiee · 13th July 2012, 09:33

I tried this on my SX4 today and it works. The throttle response is so much more better now.

moto_rrevver · 16th October 2023, 20:14

Quote:

Originally Posted by dadu

I am surprised, does SX4 in india come with Drive-by-wire technology. I thought it was mechanical.

I was always drive by wire starting from the 2007 1st gen. Sx4 and S Cross were 2 of the best product from MSIL till date.

20th July 2010, 07:43	#16
sudev Distinguished - BHPian Join Date: Jan 2008 Location: Gurgaon Posts: 3,838 Thanked: 3,179 Times	This reset is something new. Will try it next time I need to. Battery reset is common to all new gen cars using drive by wire tech. SX4 and GV have no mechanical connection between accelerator pedal and throttle body. Just electric wires to drive a servo motor. OT: Throttle Body Reset - Could it have happened at a place worse than this? http://www.team-bhp.com/forum/travel...ml#post1958074
	(1) Thanks

22nd July 2010, 13:57	#19
allajunaki BHPian Join Date: Aug 2004 Location: Sydney Posts: 165 Thanked: 97 Times	Ok, Perhaps a bit off topic, but does the new swift have Throttle by wire ? Since it now has the K-Series Engine of Ritz, which has Throttle by wire ( As far as I know). And if it does, then can we do the same reset procedure as elaborated here?
	() Thanks

27th July 2010, 07:25	#21
sudev Distinguished - BHPian Join Date: Jan 2008 Location: Gurgaon Posts: 3,838 Thanked: 3,179 Times	UPDATE: After reading this thread I started wondering if some how my GV's problem could be linked to such a reset. Problem: The car would take two or three long turns of cranking to start. Every time. Hot or cold. There was no problem with idling speed tick over. Solution: Followed the procedure described. Key at Ign. Full press of accelerator. Key off. Release accelerator. Wait. Start the car. Starts at first try with normal cranking. Thanks for the links and bringing this procedure to attention. Observation: When ever you do ECM reset (by removing battery or this procedure) before starting the engine again switch off all lights and a/c. And above all do not touch the accelerator when cranking the engine. Most of the mechs do not understand the last part and press the accelerator a "wee" bit when cranking the engine. This throws ECM off and results in engine not idling properly. Also I have seen stickers pasted on the dashboards of new cars which say "Do not press accelerator when starting" Normally this is ignored but is important for fly-by-wire ECM plus throttle body systems. @allajunaki: AFAIK it should be same procedure. In any case removing battery terminal and reconnecting after some time works. Last edited by sudev : 27th July 2010 at 07:28.
	() Thanks

27th July 2010, 08:58	#22
rkbharat Senior - BHPian Join Date: Sep 2006 Location: Gurgaon/New Delhi Posts: 1,601 Thanked: 724 Times View My Garage	time for me to try this. will do it today
	() Thanks

13th July 2012, 09:33	#23
zoombiee BHPian Join Date: Apr 2007 Location: Bangalore Posts: 314 Thanked: 97 Times	Re: SX4 : Throttle Body Adjustment on drive by wire I tried this on my SX4 today and it works. The throttle response is so much more better now.
	() Thanks