Bypassing Occupancy/Airbag sensor on a D2

[ADU UR quattro]

Hi All, This is my first post not sure how to do this, I am not good with computers, but here goes. I have had the airbag light on for around a year, its driving me nuts. So after reading Amars write-up on it, I thought I give it a to give it a go, My car is a 51plate S8, and vagcom was telling me its G128 passenger seat occupancy sensor faulty, So I followed Amars instructions and fitted a 100 ohm resistor across the blue and the white wires, which on my car made no difference, So i ran 2 wires up to the centre console to try other resistors to them,
So off to Maplins I went and bought a 1K ohm pot, and connected that to the 2wires on the centre console,Also I connected vagcom up to show Airbag measuring blocks, and I discovered that the 100R was giving me a reading "too low", adjusting the pot I could change the reading from "too low" to occupied to "too high", I adjusted the pot to read occupied, then erased any stored airbag fault codes, I didnt bother measuring what resistances caused the reading to change as its not important,I have achieved what I wanted, which is the airbag light to switch off.

I would like to say a BIG Thanks to Amar and Ranj for all their help in sorting this out for all the the people with this airbag light fault on their cars.

[ADU UR quattro]

I just took my car for MOT,and the airbag light was perfect, The car did fail on a track rod end though. placed my order for a new pair.

[BABOULINET]

Good evening, I do not quite understand the manipulation to be performed.

What is the correct schema to put out the light AIRBAG ??



http://imageshack.us/photo/my-images/27/schemarn.png/

Schema 1 connects the blue wire to the white wire with a resistance.
Schema 2 connects the resistance between the blue wire.


A resistance of 470 Ohms can it work? or is it a resistance of 100 ohms?

Thank's

[ainarssems]

Sensors normally go open circuit so scheme 1 would be appropriate, but you do not need to connect it back to sensor just unplug and put a resistor in it.

Not sure of resistance you need

[BABOULINET]

Good evening, thank you for your answer, but I do not understand.

Figure 1 is correct for you or not?

[Singh]

Sorry buddy, just saw your PM. I think RanjA8 on here knows what the resistance should be. Might be worth pm'ing him.

[BABOULINET]

Good evening, thank you, what is the correct schema for the resistance?

Thank's

[ainarssems]

Originally Posted by BABOULINET

Good evening, thank you for your answer, but I do not understand.

Figure 1 is correct for you or not?

My sensors are working fine and i have not had any problems. airbag ecu expects certain resistance range for occupied and for unoccupied, if the resistance is out of range it will throw airbag light. now if the sensor ids faulty you disconnect the sensor and put a resistor in it's place you can go for a resistance either for occupied or unoccupied, i would suggest to go for occupied. The sensor is there to prevent passenger airbags from going off if there is nobody in passenger seat to reduce cost of repair after accident. but since cars are old and low value by now most accidents that causes airbags to go off will not be economical to repair anyway so i suggest you set resistor to show it occupied and passenger airbag to go off in accident even if there is nobody in there.
I do not know values for occupied or unoccupied but you can experiment yourself with variable resistor if you have vagcom, vcds or similar

[fireman dan]

My airbag light is on and Indont want to have to replace the sensor. In the seat


Where do I buy a delete box from or is it a resistor from maplins?

Many thnks.

For the record are the sensors for the seats expensive ?


Regards.

[HPsauce]

Run VCDS to check the codes first.
If it's an S8 the "usual" problem is the small supplementary sensor in the movable front section of the seat squab.
This can easily be dealt with by just shorting it out; there's a thread about it somewhere with a fair few contributions from me. Very easy to do.

Edit: See main thread: http://forum.a8parts.co.uk/showthread.php?t=114 especially page 4 http://forum.a8parts.co.uk/showthread.php?t=114&page=4
And my own thread: http://forum.a8parts.co.uk/showthread.php?t=4873