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Airbag light ON, DTC B1031

27K views 20 replies 4 participants last post by  Suhail Kharbat  
#1 ·
Hello
Yesterday I had my power steering group replaced due to an oil leak on my 2004 XL7. The airbag came ON. Scanned it with my small OBD2, gave me: Airbag circuit resistance high, DTC B1031. Cleared the fault but it instantly comes back. I have doubts that the technician may accidently cut some cable or sensor in the front. What to do and how to fix this?
 
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#2 ·
sounds like he has unplugged or damaged the wiring to the front airbag sensor on that corner of the car, Take it back to him and get him to repair it.
 
#4 · (Edited)
one each side, just forward of the radiator, where the radiator support meets the chassis, follow the engine bay side rail towards the front, the sensor is about 50 mm square and about 20 mm high and will have a yellow plug, or a cable with a distinct yellow band around it. This is generic to almost all vehicles. Easy to miss if you don't know what it is. Disconnect the battery and wait 15 mins before doing anything on the airbag circuit, make sure you touch the chassis to bleed off any static charge you have so you don't set off the system. Sensor circuits aren't quite as touchy to work on as the air bags as they generally need 2 sensors to react to trigger the SRS controller to fire the bags, but caution is the key here.
 
#6 ·
Darrell, got the physical sensor location diagram on hand? I think the mechanic has snagged the wiring to the sensor, I can't remember whether you can actually see the sensor from the engine bay or not. Mine is forward of the radiator behind the bumper and hidden from view.
 
#8 ·
Thank you guys for the info. Will appreciate if you can provide me with a diagram showing the location of the sensor enabling me to follow. Maybe I get lucky and fix it myself. Mechanics her are experts in cutting cables and destroying connectors ?
 
#9 ·
I'm a bit confused, the code from your scanner has a different fault definition when compared to the workshop manual :confused:.
Also where did the front sensors come into it, or is this just because the wires are in the right area :confused:.

Never mind, diagram as requested :thumbsup:

Image
 
#10 ·
I have one scanner and manual says sensor resistance high, and another saying voltage high. same code number.

Since hes had his power steering changed, i'm suspecting they have snagged a sensor line in the vicinity. I may be way wrong but its seeming to me to be too much of a co-incidence.
 
#11 ·
Thank you Darrell for the valuable info.
I will check it out first thing in the morning. I am sure this fault got something to do with front wiring or sensors as it was the only place where the mechanic worked when replaced the power steering Rack And Pinion. He was struggling to get the old one out, he must have cut or broken something, and there where I should look, unless someone got another idea.
 
#12 ·
I went today to the same mechanic, together we followed airbag wiring from the front crash sensors the power steering column,,, nothing disconnected, nothing snagged. After two hours work I went to the electrician, he also couldn't find what's wrong. He checked the fuses, connectors, steering wheel coil, steering clock,,,. After two hours work he adviced me to go to Suzuki authorized workshop (which will cost me fortune).
What should I do? Shall I live with the airbag light ON knowing that the system is inoperative or do more searching? Appreciate your help
 
#13 ·
So sad that the electrician is lost, the Suzuki dealer will probably not fare any better (mostly parts changers).

This is such a simple task for those that have a scope, code readers and scanner will not cut it..

You need to get a circuit diagram and follow the yellow tabs,

... Philip
 
#16 ·
One Suzuki Electrician I know, called him over phone (he is very far from my place and explained the whole situation, he said "you have to replace the airbag clickspring, the mechanic must have done alot of hard twisting when they removed the old power-Steering rank", but that does not make sense to me as the Electrician who made the first diagnosis removed some plug and then scanned it one more time, gave him another DTC code in addition to B1031 (I guess it was B1035), by this result he confirmed nothing wrong with the clickspring.
I don't know who to believe, but I know I will pay a lot if I go to Suzuki authorized workshop because they know nothing except replacing with expensive new parts besides their high wages. I'm really confused.
 
#17 ·
It is very possible the clockspring was damaged if the mechanic didn't tie the steering wheel whist changing the rack. However I'd expect the whole clockspring ribbon to be torn and therefore get more codes and the horn not work.

If it's any use I can upload the airbag section from the XL7 2003 print workshop manual for any of these guys to use as reference.
 
#18 ·
As you said the mechanic must have done bad job in respect of the power steering column and the clockspring, he tied nothing, he marked nothing and apparently he knows nothing about airbag system and its relative electrics. The strange thing is that horn, radio and cruise controls are working fine, although lot of posts show otherwise.
Sorry guys if I'm doing grammar mistakes, I'm not so good in English ?
 
#19 ·
04 Suzuki XL7 Airbag Clock Spring

Hello Again,
I was living fine with Airbag Light On for the past two months but this week the horn stopped working. I'm living in a big city in Jordan so I need my horn screaming whenever I want. This leaves no doubt my clock spring is getting more damage. Cruise & Radio steering wheel controls still working 'so far'.
XL7 is not so famous in my country and that is why I could not find any new or used clock spring. I've searched the net, found some autpart dealers in USA and Canada but they sell the complete assembly (37400-50J50) with the turning signals & wipers arms (which I don't need) for over than US$ 350.00 new and over US$ 150.00 used without shipping. I found a lot of Chinese dealers selling the clock spring alone for almost all Japanese cars for just US$ 15.00-30.00 with free shipping but none of them has identified the vehicle VIN number or OEM part number.
I'm welling to try Chinese products but my problem is how and what to give them to make them quote for the matching part. Anyone got full details about required clock spring (i.e, part no., number of ribbon pins, ribbon length, diagrams, drawings, etc.)?
 
#20 ·
04 Zuki XL7 Airbag light ON, DTC B1031

Hi Guys,
For the past two weeks I was searching for a 2nd hand clock spring online as well as in the local market with no success. Fortunately I heard about an electronic technician who can fix it. In a light speed I went to him, saw his workshop and tools, thought why not trying, my clock spring is damaged after all. He did a great job by replacing the inside ribbon, professional soldering and proper assembling for only US$25.00, I am so happy now my airbag light went off, horn, cruise and radio control back to work and the good thing airbag didn't blow in my face. I just wanted to let you know
 
#21 ·
Some pictures of my clock spring might someone need it when searching for one in junk yards
 

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