Air Bag/Seat Belt warning lights

[vgordon]

The air bag light and the seat belt light stay on in my 1990 ZR1. The dealer checked the air bag system and found nothing wrong. I changed the driver side buckle and light(s) both still stayed on. What should I check next?

[Jeffvette]

Your dealer needs to do a better job.

Ground A-K on the ALDL wit ha paper clip

http://www.pnwzr1.com/images/aldlairbagOBD1.jpg

The infl rest light will then enter the sequence for codes. Starting with 12 three times and then onto the trouble codes. Post what you find.

[Eric870]

My 1990 has the same problem. My car does not show any codes just repeats code 12...
Wonder if you have any ideas.

Thanks
Eric
1990 #740 Blk.

[Aurora40]

You sure you are grounding A-K, not A-B as the red boxes in the picture illustrate?

On a '90 the likely cause is the crash discriminator sensors having a bad ground. As Jeff said, getting the codes will tell you for sure, and will also tell you which side it is.

[Eric870]

No, I grounded the A-B......... next time I will read what Jeff wrote.

Thank you!

[Jeffvette]

No, I grounded the A-B......... next time I will read what Jeff wrote.

Thank you!


Eric, I never updated the image. It's just a generic one for pulling the SES codes. Image has now been updated. If you need help just ping me. I am in Vancouver. Also, what is the scoop on your car?

[Eric870]

Thanks Jeff. The light just came on this weekend. So i looked thru some old posts to see if i could figure it out.

The car I just bought 2 mouth ago. according to the paper work it looks like you had your hands on it a few times (new powder coat and a tune-up). 1990 BLK/BLK with 9000 miles. The car is perfect except for the light.

[Jeffvette]

Red engine with a set of headers? It also may be the other one with a silver motor and no other work. I'll be around tonight working on a LT5 if you want to swing by. I'll PM you my number.

[Eric870]

Mine is the silver one #740. But the RED Engine #477 is for sale at a lot on stark St. I saw it on a lot on Saturday and just stopped to look, when I opened the hood WOW! that Red looked Good. The lot didn't now anything about the car. Do you know if there is any work done in the engine? Maybe I need 2 Blk 1990's

[Jeffvette]

Mine is the silver one #740. But the RED Engine #477 is for sale at a lot on stark St. I saw it on a lot on Saturday and just stopped to look, when I opened the hood WOW! that Red looked Good. The lot didn't now anything about the car. Do you know if there is any work done in the engine? Maybe I need 2 Blk 1990's


Which dealership? The car just has headers and B&B exhaust. No porting work. But everything under the plenum has been done, coils/plugs/wires.

[tomtom72]

The air bag light and the seat belt light stay on in my 1990 ZR1. The dealer checked the air bag system and found nothing wrong. I changed the driver side buckle and light(s) both still stayed on. What should I check next?

If you want to do it yourself try this link, that is after you pull the codes:

http://www.zr1netregistry.com/Old_Proj/old_proj7.htm

Just a fwiw on the clearing of the codes after the issue is addressed, cleaning up the ground problem on the sensors. I did both as a pre-emptive play. I found that clearing the codes was the hardest part of the whole deal, for me. It seemed to me that timming the grounding and un-grounding was my problem. I used a door bell as my way of doing the grounding and un-grounding so I could use my watch's second hand to time the events.

:cheers:
Tom

[Jeffvette]

Eric, did you ever get the codes?

[Eric870]

Jeff, No i did not get the codes. I tried but it look like it was giving me multiple codes. maybe a 42. i'm going to try again today.

Tom, thanks for that post it helped me see what i'm up against.


Eric

[Eric870]

OK, I checked the codes again and it is definitly is a code 42. any idea what a code 42 is?

[Jeffvette]

42 Indicator lamp circuit; Open circuit


Double check again.

[Eric870]

12 12 12 42 42 42 12 12 12 and the battery is dead.

Thanks for your help Jeff.

[tomtom72]

Eric, do you have a FSM for your yr ZR-1?

If not I have a 90 Z so I have the 90 Helm FSM. I can call you with the info from the mnanual & try to get you going in the right direction. just a fwiw.:thumbsup:

:cheers:
Tom

[Eric870]

Tom

Thank you - I do have 93 FSM's, but I am going to give up and take it to Jeff at PNWZR1. One of the luxuries of living in the Northwest. Thanks again for the offer!

[MB ZR1]

I have the same problem with my '90. Thanks for all the info. I'll be taking care of the problem whenever I get a chance.

[tomtom72]

Tom

Thank you - I do have 93 FSM's, but I am going to give up and take it to Jeff at PNWZR1. One of the luxuries of living in the Northwest. Thanks again for the offer!

:thumbsup: If I had that option I would certainly use it! :mrgreen: