General: 850: - T5R SRS/airbag light on

Mike760T · Jul 7th, 2007, 21:12

Anyone found a definitive answer to resetting the SRS light on pre OBDII 850s?

I took the air bag off to try and fix the horn (which was a right pain, i ended up bypassing all the wiring to get it to work). Anyway i followed the Haynes procedure of disconnecting the battery before taking the bag out, then switched the ignitoin on before reconnecting the battery but the SRS light remained on. I disconnected the battery again for about an hour but still no joy!

Found a few suggestions on searches but anyone actually found a method that has worked for them?

cheers
Mike

Chris_Rogers · Jul 8th, 2007, 08:53

SRS is on socket B5, use the same procedure as reading/resetting the engine management system.

Clan · Jul 8th, 2007, 09:09

regarding the horn , its where the black earth wire uses a spring clip to attatch it to the steering wheel frame behind the air bag , the official volvo fix is to spread the clip with a self tapping screw to ensure a good earth .
You can buy a pocket data book from your dealer which explains all the code reading procedures and a wealth of other useful information regarding your car ..

Mike760T · Jul 8th, 2007, 11:33

Thanks for all the input, i'll try socket B5 although it will be next weekend before i get the chance.

Regarding the horn i had initially thought the problem was at the sterring wheel but all was well, this is the most bizzarre electrical fault i have ever come accross:

1) The ground wire to the horn for some reason is permanently connected to ground.

2) The +12v to the horn is totally dead.

It doesn't help that the Haynes manual says the wires to the horn should be yellow/black for ground and yellow/violet for +12v, and mine are black and yellow/red respectively!!

Anyway to solve it i cut the black wire and spliced it to the yellow/black wire at the steering wheel, and then spliced the yellow/red wire from the horn to the yellow/violet wire going to the wash/wipe (which comes off the same fuse as the horn anyway). It works fine now but i'm still ****ed off because i have no idea what the cause of this stupid fault is!

Cheers
Mike

Mike760T · Jul 15th, 2007, 11:07

Perfect, worked an absolute treat!

Quote:

Originally Posted by Chris_Rogers

SRS is on socket B5, use the same procedure as reading/resetting the engine management system.

Jul 7th, 2007, 21:12	#1
Mike760T Junior Member Last Online: May 2nd, 2012 22:07 Join Date: May 2007 Location: Edinburgh View Photos By: Mike760T	T5R SRS/airbag light on Anyone found a definitive answer to resetting the SRS light on pre OBDII 850s? I took the air bag off to try and fix the horn (which was a right pain, i ended up bypassing all the wiring to get it to work). Anyway i followed the Haynes procedure of disconnecting the battery before taking the bag out, then switched the ignitoin on before reconnecting the battery but the SRS light remained on. I disconnected the battery again for about an hour but still no joy! Found a few suggestions on searches but anyone actually found a method that has worked for them? cheers Mike

Jul 8th, 2007, 08:53	#2
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	SRS is on socket B5, use the same procedure as reading/resetting the engine management system.

Jul 8th, 2007, 09:09	#3
Clan Experienced Member Last Online: Yesterday 23:54 Join Date: Jun 2007 Location: L/H side	regarding the horn , its where the black earth wire uses a spring clip to attatch it to the steering wheel frame behind the air bag , the official volvo fix is to spread the clip with a self tapping screw to ensure a good earth . You can buy a pocket data book from your dealer which explains all the code reading procedures and a wealth of other useful information regarding your car ..

Jul 8th, 2007, 11:33	#4
Mike760T Junior Member Last Online: May 2nd, 2012 22:07 Join Date: May 2007 Location: Edinburgh View Photos By: Mike760T	Thanks for all the input, i'll try socket B5 although it will be next weekend before i get the chance. Regarding the horn i had initially thought the problem was at the sterring wheel but all was well, this is the most bizzarre electrical fault i have ever come accross: 1) The ground wire to the horn for some reason is permanently connected to ground. 2) The +12v to the horn is totally dead. It doesn't help that the Haynes manual says the wires to the horn should be yellow/black for ground and yellow/violet for +12v, and mine are black and yellow/red respectively!! Anyway to solve it i cut the black wire and spliced it to the yellow/black wire at the steering wheel, and then spliced the yellow/red wire from the horn to the yellow/violet wire going to the wash/wipe (which comes off the same fuse as the horn anyway). It works fine now but i'm still ****ed off because i have no idea what the cause of this stupid fault is! Cheers Mike

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