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Old 13-06-12, 09:11 PM   #1
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Default Fixed Horn now airbag fault light on !

Hi Guys,

My horn has not been working for a while ,so today i decided i would fix it following this guide .Peugeot 307 horn intermittent not working.

Well now the horn works brilliantly, however now the Airbag light is on and i cant get it to go off.

I have taken it apart 4 times now each time following the correct procedure for disconnecting and reconnecting the battery but the light stays on.

I have also checked under the seats any everything is connected properley

Before i fixed the horn the airbag light was not on.

However i must mention I did have a problem where my headlights would flicker and come on on their own and today i checked the alternator and cleaned up the earths to try and fix this separate? problem

I was wondering if it was still ok to drive and if anyone had any ideas how to fix it without taking it to a garage.

Unfortunately i am unemployed at the moment so i cannot afford to take it anywhere to get diagnosed.

Any help is very much appreciated.

PS. When i first brought the car about 5 years ago the dealer replaced the comms 2000 unit for me as the indicator stalk was floppy any the air bag light was on then. so surely it wouldnt be that ?
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Old 13-06-12, 09:19 PM   #2
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have you pluged the air bag back correctly and reincerted the locking tab. on the connectors.
also check that the wiring hasnt been broken/trapped while removing the a/bag.
the connector to the comms unit behind the cowling can cause this aswell , unplu and reconnect test
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Old 13-06-12, 09:59 PM   #3
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Thanks for the reply mastertech, i really appreciate it.

I am certain that both the green and blue connectors are in correctly and the locking tabs are in place as they are colour coded and ive done it 4 times. I have also checked each ribbon cable and there are no breaks that i can see. I am honestly baffeled why i have the airbag fault message as iot is connected the same as i took it off.

I have not checked the connector to the comms unit behind the cowling as i did not take the cowling off however i will check this in the morning.

hopefully thats just loose or something

Thanks
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Old 14-06-12, 03:37 PM   #4
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Hi,

ok, i think have found the problem.

ive just retook the airbag off an the blue connector was loose then snapped in my hand

ive taken the connector apart and it looks a mess , like someone has repaired it with solder so i am guessing i need a new comms unit unless its worth trying to solder again ?

does anyone know if a comm unit from a 2006 will fill a 2001 model as i cant seem to find mine anywhere.

Also am i Ok to drive it with the airbag disconnected untill i get a new unit ?


Many Thanks
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Old 14-06-12, 05:47 PM   #5
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cant tell you if the two comms units are swappable but i can say i have replaced the connectors by cutting the ribbon and soildering new one from a donner.
you need to be shit hot at soildering to doo this.
i seperated the plastic reinforcment and re glued it over the repair.
could hardly see it ..
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Old 30-07-19, 06:54 PM   #6
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Yesterday I took my 2004 Partner airbag out to look at the horn terminals and cleaned them up. Lovely. Put it bag together, drove the van. All was well.

TODAY, airbag light issue.

Tomorrow MOT.

These modern vehicles are a pile of poo. Half a mind to get rid of it and buy an Acadiane. Hope the OP has more luck than me.
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Old 30-07-19, 08:09 PM   #7
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Just realised the internal computer senses excessive resistance through the airbag as a fault condition.

Turned on ignition. Airbag fault.

So I tried removing the blue plug from the underside of the clock unit. Ironically, I'd misguidedly pulled it off when doing the horn as pulling plugs in and out helps clean oxidation from terminals (if done regularly, such as with mains electrical plugs).

Sprayed switch cleaning lubricant into the plug and plugged in and out a few times.

Turned on ignition. No airbag fault.

So perhaps I won't get to buy an Acadiane after all.

Last edited by Ric2013; 30-07-19 at 08:10 PM. Reason: Don't count your MOT as passed until it has passed.
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Old 31-07-19, 12:32 PM   #8
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Well done but advise not to tag onto ancient posts as it is better to just start your own. The chaps who give guides to faults generally know what would cause most faults and so don't need to trawl through time consuming history. Every little helps in this busy world!
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