unlock,locks again immediately

[Paul in NZ]

not everytime but now and then,is this related to the boot hinge wiring or is always related to a door lock actuator or microswitch.How can you track down which actuator or switch it is?

[Javier]

For lock - unlock, in 1989 models, the only monitored locks are Driver's door and Trunk lid. You can verify it trying to lock all the doors with the passenger's door knob (it is not supposed to work).

If the problem does not show when you operate the trunk lock with the key (to the horizontal position, counter clock wise I think), or the lock does not work, it should be the trunk lock, and then probably the hinge harness (Remember Doogie's issue?).

If the problem does not show when you operate (lock) the driver's lock with the knob, or the lock does not work, it should be the driver's door lock, probably the micro switch inside the actuator.

For unlock - lock, I don't know, my car also has a estrange behavior in which some times when I stop to let a passenger out, and I unlock the doors pulling the knob or the handle, It locks again. Have not debug, nor study this as don't bother me enough!

Javier

[Kalevera]

Hey guys. My DS does the exact same thing (unlock and then quickly locks itself again, usually when I return the key to center position) occasionally, ONLY when it's cold, and when it has recently rained. This is accompanied with the DS staying locked (all other doors unlock), and it ONLY happens from the DS cylinder (all others will open it at all times). The lock actuator was replaced recently, and I think the microswitch might be the problem. But, like Javier said -- haven't found it annoying enough to troubleshoot

best, whit

[genphreak]

exactly the same poop for me. when it's cold or when it has rained but, mostly when it's cold. it hasn't bothered me enough yet either except for this one time ... it was about minus 30 degrees C, i started her up, got out to scrape the frickin ice of the windows, closed the door and ..... click .... she locked me out bummer ....my spare key was at home about 15 miles away ....at least the car was nice and warm inside when i finally got it unlocked

Good point RJ, thanks.

OK everyone, I've noticed the following affects my the level of 'operational recalcitrance' my car's locks exhibit;

Swapping th fuse has not fixed it (perhaps a little not sure yet due to the intermittency of the problem)

Happens for me more if it is a cold, (but in Sydney, Oz) this means below 20 degrees centigrade not freezing.. no ice to deal with here

Happens more in the morning (perhaps as it is cold, perhaps because the car has been still for a while, battery voltage lower, etc)

Happens DEFINATELY if the car has not been driven for a few days, warm or cold.. probably voltage drop?

It may be co-incidental but whilst driving or alwyas when the engine is not running my indicators stop making the ticking sound (after their first flash). I think I have an earth loss somewhere, or my battery needs replacement. Goign to do some voltage monitoring. Has anyone had the problem, changed the battery nad then had ti go away? I am pretty sure my battery is good, a while ago I had ran out of fuel and it managed to turn the engine over for what seemed like 8 minutes straight..

I believe it is to do with voltage drop somehwere in the lock control.

This might explain why changing a fuse might help, temporarily perhaps (any comments Paul?), as old fuses can cause a small drop can they not?

[genphreak]

Gee we all have the same problem, and the same response... (I can't be bothered quite yet...) Hahahhaaha... can't wait till one of finds out, it is what this community is all about! I'll be looking into it (with any luck) at some point... I wonder whereabouts on the boot harness the problem lies... at a movement point perhaps.... GP

[Kalevera]

yeah, I pulled the cover off of the wire wrap there a while back; mine looked fine. I think it has to do with the microswitch on the ds lock cylinder in my car -- that's the only way to explain why it happens after it's rained & it's cold (ice/water freezing something up in there).

[Paul in NZ]

yes javier it is only the unlock/lock at this time with the key I can only say it happens from the drivers door (with the key). The passengers knob doesnt operate the other doors but i can lock or unlock the car from the passengers door with the key,and last time i tried the lock and unlock worked from the boot......

[Javier]

Javier

[Paul in NZ]

You can verify it trying to lock all the doors with the passenger's door knob (it is not supposed to work).

Passenger's door knob should open all the doors.

huh??

[Javier]

to unlock the system, but not to lock it. The micro switch is there but not connected to the GM (not used). This is what I call non monitored lock, as not having this contact wired will prevent GM to know if Passenger's door did lock or not.

In later models (from 1992), it is wired to the GM and the knob will unlock/lock the system, and be a possible cause for the immediate unlock after lock behavior.

See pictures comparing both systems.

Javier