Air Bag Problem

Rev Jules · 28th March 2019, 11:09

Usual problem on here, Air Bag light on, I have checked all the plugs under the seats, disconnect and connect again, used a little contact cleaner, funny thing is the light goes out for a fraction of a second and then comes back on again, any ideas anyone.

Rev

drewbie · 28th March 2019, 14:06

Do you know it's definitely one of the air bags that connect under the front seats? Purchase a 2.2 ohm resister off ebay, disconnect each airbag in turn and connect resistor in place of airbag, when light stays off you've found the dodgy bag/connector... unless fault is in wiring from control module to connector, but not that likely.

stevestrat · 28th March 2019, 15:32

Don't forget the seat belt pre-tensioner wiring and connectors can also trigger the light.

COLVERT · 28th March 2019, 18:58

Exactly------

trikey · 28th March 2019, 19:06

Or a dead ECU, or a dead spring behind the steering wheel!

Rev Jules · 28th March 2019, 19:58

Many thanks guys, why is something never bleddy easy to fix

Rev

cb750chris · 28th March 2019, 21:57

Hi Rev,
The fact that the light comes on, flashes off, then comes back on again means that the airbag module is working, but detecting a fault.
If this is in a saloon, don't forget there are pretensioners in the rear belts as well as the front belts.

Hope this helps

Chris

Rev Jules · 29th March 2019, 07:11

Quote:

Originally Posted by cb750chris

Hi Rev,
The fact that the light comes on, flashes off, then comes back on again means that the airbag module is working, but detecting a fault.
If this is in a saloon, don't forget there are pretensioners in the rear belts as well as the front belts.

Hope this helps

Chris

Many thanks Chris, so how do I check these tensioners, do I disconnect them, do I pull on them, what should I do, it was suggested to take out the fuse, is that a wise thing ???

Rev

cb750chris · 29th March 2019, 16:07

They are (I believe) only the same as the front one's. Was simply mentioning them as the main culprits are the front seats, but nobody mentioned these. May be worth checking if you have had the back seat up/folded etc.
Probably best to read the codes, then go from there to find the fault rather than guessing.

Regards
Chris

Rev Jules · 29th March 2019, 16:34

Quote:

Originally Posted by cb750chris

They are (I believe) only the same as the front one's. Was simply mentioning them as the main culprits are the front seats, but nobody mentioned these. May be worth checking if you have had the back seat up/folded etc.
Probably best to read the codes, then go from there to find the fault rather than guessing.

Regards
Chris

Many thanks Chris, I pulled all the seat belts out as far as they could go, turned ignition on light still there, turned ignition off and then back on again light went out

left it for awhile checked again light stayed on, turned off and then back on again light went out, don’t really known what’s going on,

Rev

28th March 2019, 11:09	#1
Rev Jules This is my second home Rover 75 Tourer+ Join Date: Mar 2011 Location: Radcliffe on Trent Posts: 10,709 Thanks: 7,308 Thanked 3,929 Times in 2,051 Posts	Air Bag Problem Usual problem on here, Air Bag light on, I have checked all the plugs under the seats, disconnect and connect again, used a little contact cleaner, funny thing is the light goes out for a fraction of a second and then comes back on again, any ideas anyone. Rev

28th March 2019, 15:32	#3
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,465 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Don't forget the seat belt pre-tensioner wiring and connectors can also trigger the light. __________________ Steve T4 Location Map

28th March 2019, 19:06	#5
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,765 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Or a dead ECU, or a dead spring behind the steering wheel! __________________ Lest we forget..

28th March 2019, 21:57	#7
cb750chris Trader Rover 75 Tourer Join Date: Apr 2011 Location: Portsmouth Posts: 849 Thanks: 201 Thanked 292 Times in 200 Posts	Hi Rev, The fact that the light comes on, flashes off, then comes back on again means that the airbag module is working, but detecting a fault. If this is in a saloon, don't forget there are pretensioners in the rear belts as well as the front belts. Hope this helps Chris __________________ Now offering T4 services in the Fareham area Replacement keys programmed / supplied / cut Diesel 135 upgrade available IPK virginisation and T4 matching available Sorry, due to a big change in home circumstances, I am unable to do any large jobs at present, but can still offer evening time diagnostics.

29th March 2019, 16:07	#9
cb750chris Trader Rover 75 Tourer Join Date: Apr 2011 Location: Portsmouth Posts: 849 Thanks: 201 Thanked 292 Times in 200 Posts	They are (I believe) only the same as the front one's. Was simply mentioning them as the main culprits are the front seats, but nobody mentioned these. May be worth checking if you have had the back seat up/folded etc. Probably best to read the codes, then go from there to find the fault rather than guessing. Regards Chris __________________ Now offering T4 services in the Fareham area Replacement keys programmed / supplied / cut Diesel 135 upgrade available IPK virginisation and T4 matching available Sorry, due to a big change in home circumstances, I am unable to do any large jobs at present, but can still offer evening time diagnostics.

28th March 2019, 14:06	#2
drewbie Loves to post Rover 75 Club SE 1.8T 03 plate. Join Date: Jan 2009 Location: Tenterden Posts: 277 Thanks: 28 Thanked 41 Times in 37 Posts	Do you know it's definitely one of the air bags that connect under the front seats? Purchase a 2.2 ohm resister off ebay, disconnect each airbag in turn and connect resistor in place of airbag, when light stays off you've found the dodgy bag/connector... unless fault is in wiring from control module to connector, but not that likely.

28th March 2019, 18:58	#4
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Exactly------

28th March 2019, 19:58	#6
Rev Jules This is my second home Rover 75 Tourer+ Join Date: Mar 2011 Location: Radcliffe on Trent Posts: 10,709 Thanks: 7,308 Thanked 3,929 Times in 2,051 Posts	Many thanks guys, why is something never bleddy easy to fix Rev