Looking at seats... - Page 6 - Toyota Yaris Forums

CTScott · 08-07-2009, 11:14 PM

OK. I just probed mine - I see 3.94 volts on each of the SIG lines with the seat empty, ~4.00 volts with me sitting on the seat (and I weigh about 155 lbs), and ~4.20 volts when I put all of my weight on the corner being measured.

Based on that we should flip your 10K and 470 ohm resistors to make the passenger airbag active. To make it inactive, we are probably looking at increasing the 470 ohm to about 2.5K to 3K.

When you have a chance, measure the voltage of one of your connectors from pin 2 to pin 3 for me. Also measure Pin 1 to Pin 3.

MGargano · 08-07-2009, 11:39 PM

Quote:

Originally Posted by CTScott

Based on that we should flip your 10K and 470 ohm resistors to make the passenger airbag active. To make it inactive, we are probably looking at increasing the 470 ohm to about 2.5K to 3K.

When you have a chance, measure the voltage of one of your connectors from pin 2 to pin 3 for me. Also measure Pin 1 to Pin 3.

Ok, so I should run 10k from 1-2 and 470 from 2-3? That should keep the passenger's airbag active all the time?

MGargano · 08-07-2009, 11:41 PM

Oops... I meant I should change it to 470 from 1-2 and 10k from 2-3, right? I currently have it set with 10k from 1-2 and 470 from 2-3

CTScott · 08-07-2009, 11:46 PM

Correct 10K 2-3 and 470 1-2 for airbag always active.

MGargano · 08-07-2009, 11:53 PM

Quote:

Originally Posted by CTScott

Correct 10K 2-3 and 470 1-2 for airbag always active.

Ok, I'll try to do this tomorrow before work and let you know. If all goes well, the passenger's airbag light should say 'on' and the passenger's seat belt light will turn off when belted, right?

CTScott · 08-07-2009, 11:55 PM

Quote:

Originally Posted by MGargano

Ok, I'll try to do this tomorrow before work and let you know. If all goes well, the passenger's airbag light should say 'on' and the passenger's seat belt light will turn off when belted, right?

I believe so.

MGargano · 08-08-2009, 12:00 AM

Fingers crossed!

MGargano · 08-08-2009, 12:24 AM

How's this look?

I couldn't wait until tomorrow or Sunday

MGargano · 08-08-2009, 12:24 AM

MGargano · 08-08-2009, 12:25 AM

MGargano · 08-08-2009, 12:46 AM

Quote:

Originally Posted by CTScott

Correct 10K 2-3 and 470 1-2 for airbag always active.

No change in any of the indicators after swapping these, but maybe it's because of the missing/wrong resistors in the airbag sensors?

CTScott · 08-08-2009, 08:01 AM

Did you by any chance measure the voltage between 2 and 3 and 1 and 3?

MGargano · 08-08-2009, 08:27 AM

Quote:

Originally Posted by CTScott

Did you by any chance measure the voltage between 2 and 3 and 1 and 3?

I'm sure I have the required tools for this, but how would I go about doing this?

cali yaris · 08-08-2009, 12:02 PM

this is a really good read. Guys when it's all done, can it be compressed and posted as a DIY? I know a lot of people who would like to know how to do this!

jonismyname · 08-08-2009, 01:04 PM

you guys are no joke. if co-workers and married couples could co-operate as well in the same room as you guys are over a forum the world would be a very different place... rock on.

CTScott · 08-08-2009, 07:55 PM

We'll definitely turn this into a DIY once we figure it all out.

As far as clearing the current stored codes, Let's try a couple minute battery disconnect. The SRS system supposedly clears most types of stored codes if it is off for a while. If that doesn't work, we can manually clear them via that same jumper we used to make it flash the light patterns. The process for clearing them that way is a bit convoluted, so hopefully the power down will do the trick.

MGargano · 08-08-2009, 09:14 PM

Quote:

Originally Posted by CTScott

We'll definitely turn this into a DIY once we figure it all out.

As far as clearing the current stored codes, Let's try a couple minute battery disconnect. The SRS system supposedly clears most types of stored codes if it is off for a while. If that doesn't work, we can manually clear them via that same jumper we used to make it flash the light patterns. The process for clearing them that way is a bit convoluted, so hopefully the power down will do the trick.

I'm guessing I should wait until I install the correct 3 ohm resistors in the SRS senors before disconnecting the battery? Otherwise we'll still have the same problem right?

CTScott · 08-08-2009, 09:18 PM

You could try it as-is to see if we clear the code 32 and have the passenger air bag on light.

08-08-2009, 12:02 PM	#104
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	this is a really good read. Guys when it's all done, can it be compressed and posted as a DIY? I know a lot of people who would like to know how to do this! __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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08-07-2009, 11:14 PM	#91
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	OK. I just probed mine - I see 3.94 volts on each of the SIG lines with the seat empty, ~4.00 volts with me sitting on the seat (and I weigh about 155 lbs), and ~4.20 volts when I put all of my weight on the corner being measured. Based on that we should flip your 10K and 470 ohm resistors to make the passenger airbag active. To make it inactive, we are probably looking at increasing the 470 ohm to about 2.5K to 3K. When you have a chance, measure the voltage of one of your connectors from pin 2 to pin 3 for me. Also measure Pin 1 to Pin 3.

08-07-2009, 11:41 PM	#93
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	Oops... I meant I should change it to 470 from 1-2 and 10k from 2-3, right? I currently have it set with 10k from 1-2 and 470 from 2-3

08-07-2009, 11:46 PM	#94
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Correct 10K 2-3 and 470 1-2 for airbag always active.

08-08-2009, 12:00 AM	#97
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	Fingers crossed!

08-08-2009, 12:24 AM	#98
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	How's this look? I couldn't wait until tomorrow or Sunday

08-08-2009, 12:25 AM	#100
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792

08-08-2009, 08:01 AM	#102
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Did you by any chance measure the voltage between 2 and 3 and 1 and 3?

08-08-2009, 01:04 PM	#105
jonismyname Drives: 08 liftback 5spd Join Date: Oct 2008 Location: adirondacks, ny Posts: 220	you guys are no joke. if co-workers and married couples could co-operate as well in the same room as you guys are over a forum the world would be a very different place... rock on.

08-08-2009, 07:55 PM	#106
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	We'll definitely turn this into a DIY once we figure it all out. As far as clearing the current stored codes, Let's try a couple minute battery disconnect. The SRS system supposedly clears most types of stored codes if it is off for a while. If that doesn't work, we can manually clear them via that same jumper we used to make it flash the light patterns. The process for clearing them that way is a bit convoluted, so hopefully the power down will do the trick.

08-08-2009, 09:18 PM	#108
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	You could try it as-is to see if we clear the code 32 and have the passenger air bag on light.