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Technical Emulating the Passenger OCS sensor

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Technical Emulating the Passenger OCS sensor

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stec

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Emulator Ocs
 

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Friend I Cannot Assure That It Works, Is Necessary To Prove It And To Erase The Error With The Examiner, I Need That Commented The Post To See If Between All We Can Find The Solution
 
The softwares like Autodata o workshop say that I need the Examiner to erase abs error or advertising airbag error.
I send data of airbag operation.Lateral, Frontal, sensor passenger and clockspring. All data that I send you are written in spanish.
I wait your answer
Thanks
 

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stec said:
The softwares like Autodata o workshop say that I need the Examiner to erase abs error or advertising airbag error.
I send data of airbag operation.Lateral, Frontal, sensor passenger and clockspring. All data that I send you are written in spanish.
I wait your answer
Thanks
Click to expand...

No you don't. Both ABS and airbag faults will clear when the fault is fixed. No resetting is needed for any Stilo faults.
 
:)
Of All Ways I Believe That We Are Turning Aside Ourselves Of The Subject, Which Is To Emulate The Sensor The Published Circuit
 
stec said:
hi, nobody has managed to resolve? , A novelty in the forum bmwfaq achieved but what the sensor has only 2 wires

http://www.bmwfaq.com/f9/aviso-impo...a-no-funcionan-airbags-nueva-solucion-311158/ :)
Click to expand...
I have looked into this and it is not right.
Maybe the old Bravo/ Punto used this system. What is describes is an industry standard occupant DETECTOR system, not a CLASSIFICATION system as used in the Stilo. A detector tells the Airbag system if someone is sitting in the seat. The classification system tells the airbag ECU if it is an adult, a child (under 30KG weight), or the seat is empty.
The BMW sensor is an occupant Detector only.

Stilos use a PWM signal to the airbag ECU. I hope to do further work on this in the future as mine is broken and I am definitely not paying fiat for a new sensor.
 
jhon please see page 18 of the first pdf file that is located above, (airbag system stilo.zip fiat), let me know your opinion, thanks
 
I did. That is not what is in the Stilo. The 100 ohm / 400 ohm switch describes a standard switch used by all european manufacturers. An occupant detector works in this way and so does the passangers airbag on/ off switch in the dash.

The OCS fitted to a Stilo passengers seat is different.
 
Today I went to the shop to buy this parts, but they asked me for more details about the 'resistor' and 'the insulating diode' (for example: how many Watts(for the resistor))
 
Thank you very much. But i have more two questions.

1. I'm very sorry but I didn't understand (1/2watt) do you mean 0.5watt OR 1or2watt.
2. There is a slight difference between the colors of wires in the sheme and these in my car.
 

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Last edited:
danhans115 said:
Resistor wise just get a 1/2watt metal film 120ohm resistor, as for the diode try a 1N5349 or similar should do it.

Both available from maplins/RS/farnells. I have no idea if it works as I have working airbags.

Dan
Click to expand...

As I have previously said. It will not work.
The Stilo has a occupant classification sensor. i.e. it tells the weight of the person in the seat and where they are sitting.
The resistor works for replacing an occupant detector system. i.e. a simple switch that is triggered when someone sits in the seat.
 
john55 said:
As I have previously said. It will not work.
The Stilo has a occupant classification sensor. i.e. it tells the weight of the person in the seat and where they are sitting.
The resistor works for replacing an occupant detector system. i.e. a simple switch that is triggered when someone sits in the seat.
Click to expand...

I was merely interpreting the information given in German. Bodging diodes and resistors into something like this is stupid IMO - especially with limited or no knowledge of electronics or airbag systems.

Some things really are just best left to the experts.

Dan
 
Surely trying to 'fool' the airbag system would be a bad idea.

I know that if it was tricked into thinking a person was in it, then it would still only go off if the seatbelt was used. But what would trying to emulate tell it? That there was an adult or a child? You wouldnt want it to think the wrong kind of passenger was in the car and the wrong deployment of the airbag to happen...

Get a new sensor peoples :rolleyes:
 
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