Originally Posted by Gilbertr14
I have a 98 156. I recently put a 2000 interior into it.
The 2000 Models came with seat air bags. They new seats have the lovely yellow 3 wire looms and connectors, whereas the original seats which did not have airbags, have a small white connector on a two wire loom.
Does anyone know how to wire up the two seats and where the third wire should be run to?
The three wire loom is for the side impact airbags. The two wire loom is most likely the passenger seat airbag sensor for the passenger front airbag. It detects if someone is in the seat or not. This sensor was scrapped and ECU updated somewhere around 1999-2000.
To hook up the side airbags in your new seats, you will need the correct type of airbag ECU and wiring loom.
I've got a minor problem of the same sort. I just installed seats where the passenger seat does not have that sensor, and the sensor is out of production and can't be ordered. I then tried to get one of those resistors the dealers have to test the system, as it would cheat the ECU to think someone is in the seat at all times. But that cant be bought either..
So now of course my airbag ECU is looking for that bloody sensor, and shows a fault, resulting in the Passenger airbag being disconnected.
I've heard a 3 or 2 ohm resistor soldered to the two wires should fix this.
Had no luck with a 3ohm /0.25W resistor though, the Examiner still shows a fault code for it, so i guess i will have to try with a 2ohm.
Trust AR to scrap production of a part, and not supply an alternative