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91 BMW door locks

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=63483
Printed Date: July 07, 2025 at 7:54 PM


Topic: 91 BMW door locks

Posted By: extremeconcepts
Subject: 91 BMW door locks
Date Posted: September 29, 2005 at 1:21 PM

I used the diagram on this forum and caught the 5 wire at the ZV Module behind the glove box.  The locks will unlock with no problem, but on lock activation, they will not move.  I can hear the motors trying, but no motion.  Anyone have any other ideas?



Replies:

Posted By: mo12v
Date Posted: September 29, 2005 at 3:27 PM
What Model BMW
It may have the Dead-Bolt System which prevents the Doors from Unlocking unless another method is used

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.




Posted By: extremeconcepts
Date Posted: September 29, 2005 at 4:51 PM

Manufacture date is 7/91.  There are no relays in driver kick, no alarm plug behind glove box, only ZV Module high in pass. kick.  Also when I grab the two wires at the ZV module, I loose all functions from the drivers key cylinder.  This car is whipping my *@#!!





Posted By: Evolution-UK
Date Posted: September 29, 2005 at 4:54 PM
Is this an E36 or E30 model BMW ?




Posted By: extremeconcepts
Date Posted: September 29, 2005 at 5:36 PM
hOW CAN i TELL THE DIFFERENCE?  iTS A 325I




Posted By: Evolution-UK
Date Posted: September 29, 2005 at 5:41 PM
This is an E30 model.

https://www.unixnerd.demon.co.uk/e30.html

and this is an E36

https://www.cardomain.com/ride/2074082




Posted By: extremeconcepts
Date Posted: September 29, 2005 at 5:44 PM
its an E36




Posted By: mo12v
Date Posted: September 29, 2005 at 5:47 PM

Power LockYELLOW/BLUEDRIVER KICK
Power UnlockGREEN/ BLUE   see note**PANEL
Negative Pulse Door Locks
BMW Deadbolt Door Locks :
**Note
: https://www.wiringinstructions.com/208.htm



-------------
MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.




Posted By: Evolution-UK
Date Posted: September 29, 2005 at 5:53 PM
thats wrong Mo12v. Those are for an E30


Does your ZV module have a White plug or a Yellow Plug ?

White plug pins is 24-25 Yellow Plug is pins 4 - 17

The doors locks probably wont operate if there is a door open.




Posted By: extremeconcepts
Date Posted: September 29, 2005 at 5:54 PM
There is a white plug on ZV Module.  I've seen where I can add wires to this plug on 24 and 25, but I don't know where I can get pins to fit the plug.




Posted By: Evolution-UK
Date Posted: September 29, 2005 at 6:10 PM
OK you have 2 options.

1/ remove the battery terminals then unplug the module. Open it up and locate pins 24-25 on the board. Solder 2 wires onto the board, drill a hole in the black box case and bring the 2 wires out of the box. This is the way that i would do it.

2/ Split the plug down that plugs into the control module. Strip 10-15mm from the ends of your CDL control wires (ones from the alarm unit). Tin the bared ends with your solder iron and insert these into the holes where the pins would be located inside the plug. Rebuild the plug then insert it into the control module.

Not an ideal way of doing it but it works.




Posted By: extremeconcepts
Date Posted: September 30, 2005 at 9:09 AM
K thanx, I soldered in the ZV module and everything works great.  Thank you for your help





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