Looking at seats... - Page 8 - Toyota Yaris Forums

MGargano · 08-08-2009, 10:44 PM

Quote:

Originally Posted by CTScott

OK. Check the ECU-B fuse under the hood.

Fuse is intact

MGargano · 08-08-2009, 10:46 PM

Is it possible to resume this tomorrow? My car's in the driveway and it's starting to rain. Plus it's getting kinda late. I have all day tomorrow, if you're game and available?

CTScott · 08-08-2009, 10:52 PM

No problem.

CTScott · 08-09-2009, 09:16 AM

OC ECU.jpg

The first thing to check, when you have a chance today is a couple of voltage readings on the Occupant Classification ECU cable harness.

If you look at the image above J24 has the Black connector going to it and U1 has the Gray connector.

Pull the J24 Black connector and then measure the following (on the cable connector side):

Put the black lead on pin 3 and the red one on the wire being checked.

Pin 1 (Violet wire) to Pin 3 (White wire with black stripe)

Pin 7 (Beige wire) to Pin 3 (White wire with black stripe)

MGargano · 08-09-2009, 10:05 AM

Pin 1-3: looks like .14
Pin 3-7: looks like .12/.13

MGargano · 08-09-2009, 10:18 AM

And, of course, as soon as I get outside, it starts pouring rain. I'd continue, but I have to keep getting out of the car so I can move closer to my house where my iPod Touch can pickup an internet signal to keep refreshing the forum for directions

CTScott · 08-09-2009, 10:47 AM

Quote:

Originally Posted by MGargano

Pin 1-3: looks like .14
Pin 3-7: looks like .12/.13

Nothing like working in the rain.

Are those readings with the ignition on or off?

It should be on for the readings. 7-3 should be 12V with the key on or off. 1-3 should be 12V only with the key on.

Also, with your meter, when I had you check the meter by measuring the battery voltage last night, did you see 14., as opposed to the .14 that you just read on 1-3?

MGargano · 08-09-2009, 12:03 PM

Quote:

Originally Posted by CTScott

Nothing like working in the rain.

Are those readings with the ignition on or off?

It should be on for the readings. 7-3 should be 12V with the key on or off. 1-3 should be 12V only with the key on.

Also, with your meter, when I had you check the meter by measuring the battery voltage last night, did you see 14., as opposed to the .14 that you just read on 1-3?

Ok it's all good now. Your diagram's pin numbers didn't match up with my connector but I was able to figure it out based on the colors. I have 12V all around now.

My connector seems to be labeled left to right, whereas as yours is right to left

MGargano · 08-09-2009, 12:05 PM

Scratch that...I'm retarded. Your pic is of the ECU, not the connector. It's all good now.

CTScott · 08-09-2009, 02:21 PM

Quote:

Originally Posted by MGargano

Scratch that...I'm retarded. Your pic is of the ECU, not the connector. It's all good now.

That gets confusing. Sometimes the pics are of the cable side, sometimes of the device side.

OK. So both power feeds into the module are fine. Try removing the resistors and then reading the 1-3 and 2-3 voltages on the sensor connectors.

cali yaris · 08-09-2009, 02:26 PM

I am totally subscribed to this. Mgargano and CTScott, BIG props to both of you for having this conversation on a thread.

MGargano · 08-09-2009, 02:32 PM

Quote:

Originally Posted by CTScott

That gets confusing. Sometimes the pics are of the cable side, sometimes of the device side.

OK. So both power feeds into the module are fine. Try removing the resistors and then reading the 1-3 and 2-3 voltages on the sensor connectors.

Which pins get which leads?

CTScott · 08-09-2009, 02:34 PM

Quote:

Originally Posted by MGargano

Which pins get which leads?

black on 3, red on 1 then 2

MGargano · 08-09-2009, 02:44 PM

Ignition on, J24 plugged back into the OC-ECU, resistors on the 4 weights sensors removed and....

Nothing. Zeros on all four sensors for 1-3 and 2-3

CTScott · 08-09-2009, 02:50 PM

And, U1 (the gray connector) is plugged in?

MGargano · 08-09-2009, 02:56 PM

Quote:

Originally Posted by CTScott

And, U1 (the gray connector) is plugged in?

Yes

CTScott · 08-09-2009, 03:01 PM

OK. Try measuring each of the three pins relative to chassis ground (a seat mounting bolt would be fine). Red on 1, 2, and then 3 and black to the bolt.

MGargano · 08-09-2009, 03:09 PM

Quote:

Originally Posted by CTScott

OK. Try measuring each of the three pins relative to chassis ground (a seat mounting bolt would be fine). Red on 1, 2, and then 3 and black to the bolt.

Still nothing...all zeros

08-09-2009, 02:26 PM	#137
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	I am totally subscribed to this. Mgargano and CTScott, BIG props to both of you for having this conversation on a thread. __________________ 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.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Possible Group Buy.. Racing Seats, Intakes?	TinyGiant	Items for Sale by private party	60	09-11-2009 02:40 PM
FS: Recaro Pole Position Racing Seats (black) -- socal	03Z33	Items for Sale by private party	13	12-07-2008 05:08 PM
sparco seats and pedals (pics)	turboyaris	Cosmetic Modifications (Exterior/Interior)	18	09-05-2007 02:43 AM
Sport / Racing seats worth the while?	mikeukrainetz	Cosmetic Modifications (Exterior/Interior)	10	11-19-2006 01:17 PM
Yaris Liftback Seats	artyin	General Yaris / Vitz Discussion	3	04-30-2006 04:07 PM

08-08-2009, 10:46 PM	#128
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	Is it possible to resume this tomorrow? My car's in the driveway and it's starting to rain. Plus it's getting kinda late. I have all day tomorrow, if you're game and available?

08-08-2009, 10:52 PM	#129
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	No problem.

08-09-2009, 09:16 AM	#130
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	OC ECU.jpg The first thing to check, when you have a chance today is a couple of voltage readings on the Occupant Classification ECU cable harness. If you look at the image above J24 has the Black connector going to it and U1 has the Gray connector. Pull the J24 Black connector and then measure the following (on the cable connector side): Put the black lead on pin 3 and the red one on the wire being checked. Pin 1 (Violet wire) to Pin 3 (White wire with black stripe) Pin 7 (Beige wire) to Pin 3 (White wire with black stripe)

08-09-2009, 10:05 AM	#131
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	Pin 1-3: looks like .14 Pin 3-7: looks like .12/.13

08-09-2009, 10:18 AM	#132
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	And, of course, as soon as I get outside, it starts pouring rain. I'd continue, but I have to keep getting out of the car so I can move closer to my house where my iPod Touch can pickup an internet signal to keep refreshing the forum for directions

08-09-2009, 12:05 PM	#135
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	Scratch that...I'm retarded. Your pic is of the ECU, not the connector. It's all good now.

08-09-2009, 02:44 PM	#140
MGargano Drives: 2009 Yaris Hatchback Join Date: Feb 2009 Location: NJ Posts: 792	Ignition on, J24 plugged back into the OC-ECU, resistors on the 4 weights sensors removed and.... Nothing. Zeros on all four sensors for 1-3 and 2-3

08-09-2009, 02:50 PM	#141
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	And, U1 (the gray connector) is plugged in?

08-09-2009, 03:01 PM	#143
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. Try measuring each of the three pins relative to chassis ground (a seat mounting bolt would be fine). Red on 1, 2, and then 3 and black to the bolt.