Airbag light

BillyMG · 11th March 2018, 18:01

Hi all got MOT next weekend and have the airbag light on. The previous owner has bypassed some wires under the drivers seat and one had come loose so I replaced it with a bullet connector and pulled the fuse for 20 minutes. All was well for a a few miles but the light has reappeared. Which wires and connectors am I looking at exactly as I can see there are wires for the seat motors under there too... ?

BillyMG · 11th March 2018, 18:03

Presume the bullet connector I put on to connect two wires has nothing to do with the airbag system as I should be connecting several wires to eachother??

BillyMG · 11th March 2018, 18:12

Took some pictures not sure if this will work

https://ibb.co/c0rTa7
https://ibb.co/fg3kNn
https://ibb.co/fuwuF7

kc13661 · 11th March 2018, 18:15

Have you checked the wires on the other seat ? its not always the drivers side..... also has the car ever had water leaking in, if so it may be the sensors corroded under the carpet

Various threads around on this

stevestrat · 11th March 2018, 18:19

With a mk1 under the seat you are looking for a yellow connector for the airbag and a blue one for the seat belt pretensioner, a problem with either can bring the light up. The connectors are present under both front seats. In a Facelift both connectors are yellow.

kc13661 · 11th March 2018, 18:23

If the carpet has been wet check this thread

https://www.the75andztclub.co.uk/for...d.php?t=227522

slovcan · 11th March 2018, 18:27

Probably not connected (get it?

), but I 'd be redoing the red wire's connector tout suite (third picture). I'm sure I can see bare wire there. I hate previous owners' wiring "repairs".

Cheers,
Glenn

madeupname · 11th March 2018, 18:27

Quote:

Originally Posted by stevestrat

With a mk1 under the seat you are looking for a yellow connector for the airbag and a blue one for the seat belt pretensioner, a problem with either can bring the light up. The connectors are present under both front seats. In a Facelift both connectors are yellow.

I had a constant airbag warning light on Kim (Mk 1). Trikey T4'd it and it showed both seat airbags at fault. He told me to check the blue connectors. I cut the connectors off, reconnected the wires temporarily with the bog standard plastic connection box and hey presto...... no more airbag warning light.
At some point I'll solder the proper connectors back on.

EDIT - After further thought I'm pretty sure you can follow the wire from the connector to the pre-tensioner. So whatever colour it is, it will be the other connector for the airbag

stevestrat · 11th March 2018, 18:40

Both my ZTs I ended up replacing the connectors with solder and heatshrink but added about 6" of wire to all of them to eliminate seat movement being a problem. Moving the seats can put the wiring under tension either pulling the connectors apart or even cause a break.

Photo 1 is the yellow airbag connector. Photos 2 and 3 seem to be of the same bodge, wire added into the seat belt pretensioner wiring

BillyMG · 11th March 2018, 19:35

Wow thanks for all the replies fellas. No water ingress at all so I think I will cut the yellow connector in photo 1 off and reconnect with a plastic screw connector then match it all on the other side if no joy. Oh and well spotted that bare wire on the red connector - I'll sort that too. What a load of shennanigans! To be fair I've not had a car yet with airbags which hasn't had a fault because of these underseat wires - more so when the wife has been using them as like most women she has this annoying habit of moving the seat right back every time she gets out ...!

11th March 2018, 18:01	#1
BillyMG Gets stuck in MG ZT 2.5 V6 Auto Tourer (Elizabeth) / MG ZT CDTI (Farage) Join Date: Jan 2017 Location: St Helens Posts: 688 Thanks: 339 Thanked 109 Times in 89 Posts	Airbag light Hi all got MOT next weekend and have the airbag light on. The previous owner has bypassed some wires under the drivers seat and one had come loose so I replaced it with a bullet connector and pulled the fuse for 20 minutes. All was well for a a few miles but the light has reappeared. Which wires and connectors am I looking at exactly as I can see there are wires for the seat motors under there too... ?

11th March 2018, 18:15	#4
kc13661 I really should get out more....... Freelander Td4 Join Date: Jan 2013 Location: Gateshead Posts: 2,332 Thanks: 704 Thanked 909 Times in 419 Posts	Have you checked the wires on the other seat ? its not always the drivers side..... also has the car ever had water leaking in, if so it may be the sensors corroded under the carpet Various threads around on this __________________ ------------------------------------------------------------------- Growing old is compulsory.... Growing up is Optional

11th March 2018, 18:19	#5
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,557 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	With a mk1 under the seat you are looking for a yellow connector for the airbag and a blue one for the seat belt pretensioner, a problem with either can bring the light up. The connectors are present under both front seats. In a Facelift both connectors are yellow. __________________ Steve T4 Location Map

11th March 2018, 18:23	#6
kc13661 I really should get out more....... Freelander Td4 Join Date: Jan 2013 Location: Gateshead Posts: 2,332 Thanks: 704 Thanked 909 Times in 419 Posts	If the carpet has been wet check this thread https://www.the75andztclub.co.uk/for...d.php?t=227522 __________________ ------------------------------------------------------------------- Growing old is compulsory.... Growing up is Optional

11th March 2018, 18:27	#7
slovcan Gets stuck in 75 Tourer CDT MK2 manual in Glorious Grey Join Date: Jan 2018 Location: Slovakia Posts: 987 Thanks: 926 Thanked 346 Times in 252 Posts	Probably not connected (get it? ), but I 'd be redoing the red wire's connector tout suite (third picture). I'm sure I can see bare wire there. I hate previous owners' wiring "repairs". Cheers, Glenn __________________ Southern Slovakia Anything can happen in Formula 1 and usually does - Murray Walker 1999 Triumph Trophy 900, Saddlesore 1600, Iron Butt Riders Association #63720 2005 Rover 75 CDT Tourer MK2

11th March 2018, 18:03	#2
BillyMG Gets stuck in MG ZT 2.5 V6 Auto Tourer (Elizabeth) / MG ZT CDTI (Farage) Join Date: Jan 2017 Location: St Helens Posts: 688 Thanks: 339 Thanked 109 Times in 89 Posts	Presume the bullet connector I put on to connect two wires has nothing to do with the airbag system as I should be connecting several wires to eachother??

11th March 2018, 18:12	#3
BillyMG Gets stuck in MG ZT 2.5 V6 Auto Tourer (Elizabeth) / MG ZT CDTI (Farage) Join Date: Jan 2017 Location: St Helens Posts: 688 Thanks: 339 Thanked 109 Times in 89 Posts	Took some pictures not sure if this will work https://ibb.co/c0rTa7 https://ibb.co/fg3kNn https://ibb.co/fuwuF7

11th March 2018, 18:40	#9
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,557 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Both my ZTs I ended up replacing the connectors with solder and heatshrink but added about 6" of wire to all of them to eliminate seat movement being a problem. Moving the seats can put the wiring under tension either pulling the connectors apart or even cause a break. Photo 1 is the yellow airbag connector. Photos 2 and 3 seem to be of the same bodge, wire added into the seat belt pretensioner wiring __________________ Steve T4 Location Map Last edited by stevestrat; 11th March 2018 at 18:46..

11th March 2018, 19:35	#10
BillyMG Gets stuck in MG ZT 2.5 V6 Auto Tourer (Elizabeth) / MG ZT CDTI (Farage) Join Date: Jan 2017 Location: St Helens Posts: 688 Thanks: 339 Thanked 109 Times in 89 Posts	Wow thanks for all the replies fellas. No water ingress at all so I think I will cut the yellow connector in photo 1 off and reconnect with a plastic screw connector then match it all on the other side if no joy. Oh and well spotted that bare wire on the red connector - I'll sort that too. What a load of shennanigans! To be fair I've not had a car yet with airbags which hasn't had a fault because of these underseat wires - more so when the wife has been using them as like most women she has this annoying habit of moving the seat right back every time she gets out ...!