Disconnecting OEM Car Alarm for 90 Camry?
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=76272
Printed Date: May 13, 2024 at 1:35 AM
Topic: Disconnecting OEM Car Alarm for 90 Camry?
Posted By: the1namedmarc
Subject: Disconnecting OEM Car Alarm for 90 Camry?
Date Posted: April 15, 2006 at 2:42 PM
The alarm system installed in my 1990 Camry is very annoying. That is why I decided to get rid of it all together. However, how can I disconnect the electronic control unit, located underneath the drivers seat, while still being able to turn on the car? Once the harness and antenna are removed, the car no longer turns-over. Any ideas on how to defeat the alarm without sacrificing the use of the car?  Model # 00398-00910 All and any help is appreciated.
Replies:
Posted By: Twelvoltz
Date Posted: April 15, 2006 at 3:55 PM
DEI is not listing a factory alarm for the 90 Camry. Are you sure this is a Toyota alarm or an aftermarket add on?
Posted By: the1namedmarc
Date Posted: April 15, 2006 at 4:25 PM
On "the brain", it's labeled as; "Toyota Vehicle Security System Electronic Control Unit (00398-00910)... And the FCC ID: BABMW - 8170
Posted By: Scott35
Date Posted: April 15, 2006 at 6:01 PM
Are you just unplugging the brain? If so you may need to go into the kick panel or under the dash, and remove the harness there. Then plug the plugs back together from the car's harness.
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Tacomacrew
Posted By: the1namedmarc
Date Posted: April 15, 2006 at 9:24 PM
Yea Scott, I'm just trying to unplug the brain and put everything back to normal. However, when looking near the kick panel, the wires split in many different directions. Some wires look like they'd need more work than just unplugging and replugging a harness. (Some may have been spliced) Do you think there could be a fused that would just need to be pulled?
Posted By: Scott35
Date Posted: April 15, 2006 at 9:29 PM
On the newer models there isn't a fuse. Try looking directly under the steering column, where the main hook ups are.
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Tacomacrew
Posted By: the1namedmarc
Date Posted: April 15, 2006 at 9:44 PM
Ok thanks, I'll check it out tomorrow.
Posted By: Chris Luongo
Date Posted: April 16, 2006 at 11:46 AM
Sounds like you have the dealer-installed factory alarm system.
To completely remove the unit from the car can be a little bit time-consuming, but it is simple. To just disable/disconnect it might be easier.
First, remove the driver's underdash panel----the part that is in front of the driver's knees. Should be four 10mm bolts, I think. This should allow you to access the wiring behind the ignition switch.
It might look like a jumble of wires at first, but if you look closely, this is how the Toyota system works:
The alarm has a harness running to the ignition switch, with two plugs----a female and a male.
The installer would disconnect the original Toyota wiring from the ignition switch.......plug the alarm's male plug into the ignition switch.........and plug the Toyota's original male plug into the alarm's female plug.
It's simply a T-harness setup, that allows the installer to make his connections without cutting into the factory Toyota wiring. A very clever setup.
There are a few connections, such as the horn-honk wire and the trunk-ajar wire, that will be manually splice the old-fashioned way, or possibly attached with a red squeeze-on connector known as a Scotchlock.
Anyway...........
If you want to just disconnect and disable the system, undo the T-harness at the ignition switch, and plug the Toyota wiring back into the ignition switch, the way it was from the factory.
That will get rid of the power going to the alarm, as well as disable the starter-kill feature.
Or, if you want to completely remove the system..........
Simply follow all the harnesses from the brain.......undo ALL of the T-harnesses and restore the factory wiring to the way it was..........undo the manually spliced connections and re-tape the factory wire........remove the alarm brain and all of its harnesses........remove the red dash-mounted LED and replace it with a blank switch panel from the junkyard or dealership.
Posted By: the1namedmarc
Date Posted: May 29, 2006 at 12:32 PM
Thanks for the help Chris.... However, I'm not sure what to do at this part; I disconnected the BLACK/ white and BLACK / YELLOW wiring from the Alarm System. Unfortunately, I can't find where to plug the OEM (b/w and b/y) wires into. I'll try and post pictures ASAP.
Posted By: the1namedmarc
Date Posted: May 29, 2006 at 12:48 PM
Hopefully these pictures help!
Posted By: the1namedmarc
Date Posted: May 29, 2006 at 1:56 PM
UPDATE: I looked at an 89 Camry and saw that the BLACK / YELLOW and BLACK/ white wires are NOT supposed to be connected to anything. What I did was disconnect all the wires from the alarm brain and tried to put the car back to normal. However, the vehicle will still not turn over. All the accessories work too... When I turn the key, It makes two quick clicks. (Sounds like from the engine bay) Any ideas on what's wrong? Thanks.
Posted By: the1namedmarc
Date Posted: May 29, 2006 at 2:26 PM
This pictures is taken from below the steering column. Was it ok to cut the one wire from the alarm harness and just cap it off? It was originall spliced with the pink clamp...
This picture is from the drivers side kick panel. Are all the wires fine?
Why will the car not turn over? It makes a couple clicks from the engine bay... one sounds like it's coming from the fuse box and the other comes from the starter... did I blow the starter? Any ideas? Thanks
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