1990: Seat belt doesn't catch when stopping

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Old 16 Feb 2005, 11:25 am   #1 (permalink)
DavidK
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Default 1990: Seat belt doesn't catch when stopping

I just bought a 1990 Camry and noticed both the driver and passenger
seat belts do not catch when stopping at all. The lap belt works fine.

I tested with a volt meter to the on board switch that says "Press to
release belt" or something like that and it is getting some juice. But
when I press on the break and pull the belt in a fast manner, it never
catches like it's supposed to.

Any ideas?

DavidK

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Old 16 Feb 2005, 12:22 pm   #2 (permalink)
davidj92
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Default Re: Seat belt doesn't catch when stopping

DavidK wrote:
> I just bought a 1990 Camry and noticed both the driver and passenger
> seat belts do not catch when stopping at all. The lap belt works
> fine.
>
> I tested with a volt meter to the on board switch that says "Press to
> release belt" or something like that and it is getting some juice.


I'm assuming you are checking the switch that turns off the light on dash
telling you seat belt isn't fastened. If the light goes out on dash when you
fasten belt then all should be well with this.

> But when I press on the break and pull the belt in a fast manner, it
> never catches like it's supposed to.


While you could truly have a problem, remember you have to pull the belt's
retractor really fast to get it to lock up. Some models are more sensetive
to motion than others.
HTH, davidj92


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Old 17 Feb 2005, 09:50 am   #3 (permalink)
DavidK
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Default Re: Seat belt doesn't catch when stopping

I've pulled so hard so many times that it must not be working and is
very dangerous. I've read in other postings that it could be a fuse?

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Old 17 Feb 2005, 11:01 am   #4 (permalink)
davidj92
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Default Re: Seat belt doesn't catch when stopping

DavidK wrote:
> I've pulled so hard so many times that it must not be working and is
> very dangerous. I've read in other postings that it could be a fuse?


You may be correct in fuse causing light to stay on but the lock-up is
caused by a mechanical device - an inertia switch in the tensioner assembly.
But, if you have voltage at one of the contacts on the seat belt connector
then I don't think it's the fuse.
I'm not doubting you, but it's not how hard you pull but how fast. The
inertia switch in the tensioner is triggered by exceptional speed that is
caused by sudden stopping of vehicle and object being restrained
experiencing the Newton's law that states a body in motion will stay in
motion. :-)
The tensioner could be bad, dirty or possibly dry. If it's not a lot of work
take the cover off the tensioner assy and do a visual to see if there is a
foreign object or an accumulation of dirt or dust. Could save you having to
purchase a new seat belt.
One other thought is to take it to a dealer and ask to have the service
manager to inspect the belt for you. I would expect my dealer to do this for
free but I bought both my Toyotas there and have one of them serviced there.
I would think a good dealer would still do this inspection for free. While
there ask about recommended lubes, if any, and where to lube.
HTH, davidj92


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Old 17 Feb 2005, 08:49 pm   #5 (permalink)
Wolfgang
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Default Re: Seat belt doesn't catch when stopping

The shoulder harness locks by inertia --- you should be able to yank it very
quickly forward and it should lock. You could always take the plastic cover
off and see if it is cloughed up with dust and stuff over 15 years. It
doesn't work by electricy or anything to do with the brakes.

"DavidK" <davidknollhoff@yahoo.com> wrote in message
news:1108574708.485331.263670@o13g2000cwo.googlegr oups.com...
>I just bought a 1990 Camry and noticed both the driver and passenger
> seat belts do not catch when stopping at all. The lap belt works fine.
>
> I tested with a volt meter to the on board switch that says "Press to
> release belt" or something like that and it is getting some juice. But
> when I press on the break and pull the belt in a fast manner, it never
> catches like it's supposed to.
>
> Any ideas?
>
> DavidK
>



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Old 19 Feb 2005, 12:22 pm   #6 (permalink)
condor_222@yahoo.com
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Default Re: 1990: Seat belt doesn't catch when stopping

I have a 97 Camry. Just before 60K miles, my seat belt would
not retract and keep pressure against my shoulder. It was slack.
Turned out that this was covered under warranty. And, there
was a recall on this.

Seat belts are very important. I would spend the money and have
this fixed. I remember an old advertisement for seat belts once.

Imagine you were sprinting at full speed down a sidewalk. Then,
you swerved and rammed a telephone pole with your head. It
still would not be close to the impact that your head would hit the
windshield in a 30 mph crash!

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Old 21 Feb 2005, 04:37 pm   #7 (permalink)
DavidK
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Default Re: Seat belt doesn't catch when stopping

Thanks for your reply. I do have to clearify somethings I did say.
When I said I pulled hard, I meant fast, very fast and it happens to
both driver and passenger sides.

Also, there is no light on the dash board since the belts are passive
restraint. The contact I tested was a little light/indicator that is
located next to the emergency brake between the two front seats.

I was able to look at the mechnical assembly but all looked okay but
was not able to fully remove.

I'll take your advise and look for built up dirt and such when I get a
sunny weekend and figure out all the nuts and bolt to remove the
complete assembly.

David


davidj92 wrote:
> DavidK wrote:
> > I've pulled so hard so many times that it must not be working and

is
> > very dangerous. I've read in other postings that it could be a

fuse?
>
> You may be correct in fuse causing light to stay on but the lock-up

is
> caused by a mechanical device - an inertia switch in the tensioner

assembly.
> But, if you have voltage at one of the contacts on the seat belt

connector
> then I don't think it's the fuse.
> I'm not doubting you, but it's not how hard you pull but how fast.

The
> inertia switch in the tensioner is triggered by exceptional speed

that is
> caused by sudden stopping of vehicle and object being restrained
> experiencing the Newton's law that states a body in motion will stay

in
> motion. :-)
> The tensioner could be bad, dirty or possibly dry. If it's not a lot

of work
> take the cover off the tensioner assy and do a visual to see if there

is a
> foreign object or an accumulation of dirt or dust. Could save you

having to
> purchase a new seat belt.
> One other thought is to take it to a dealer and ask to have the

service
> manager to inspect the belt for you. I would expect my dealer to do

this for
> free but I bought both my Toyotas there and have one of them serviced

there.
> I would think a good dealer would still do this inspection for free.

While
> there ask about recommended lubes, if any, and where to lube.
> HTH, davidj92


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