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94 caprice, passlock, vats?

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=88269
Printed Date: May 16, 2024 at 3:25 PM


Topic: 94 caprice, passlock, vats?

Posted By: carstereoman
Subject: 94 caprice, passlock, vats?
Date Posted: January 03, 2007 at 9:28 AM

is the 94 caprice a passlock 1 or 2 system? I am having a problem w/ remote start module 555L.



Replies:

Posted By: brcidd
Date Posted: January 03, 2007 at 9:46 AM
Look at the key- it should have a resistor chip in it- then all you need is a relay and the proper resistor to bypass-- The proper name is VATS for this security method (vehicle anti-theft system)

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Brcidd - Engineer That Does Remote Starter Installs on the side.




Posted By: advanced
Date Posted: January 03, 2007 at 10:05 AM

There are only 15 possible resisor values. The circuit is very easy to build.

Here is a link that explains how to bypass VATS.



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Good Enough Isn't!




Posted By: Chris Luongo
Date Posted: January 03, 2007 at 5:32 PM
Caprice has VATS (Vehicle Anti Theft System), not PASSLock.

Some later versions of VATS were named PASSKey II.

Regardless, your 555L is of little use.........just use a resistor and a relay and do a regular VATS bypass----should be in the instruction manual of any good remote starter.





Posted By: carstereoman
Date Posted: January 05, 2007 at 12:47 PM
I can't get a reading off the key, is there a way to test it in the wires?




Posted By: carstereoman
Date Posted: January 05, 2007 at 3:46 PM
Remotestart works fine w/key in the ignition. got the relay from above. Using avital 4300.




Posted By: john ogrady
Date Posted: January 05, 2007 at 6:43 PM
The VATS was only used for 2 years when it was introduced on the 1986 Corvette.In 1989 GM improved it and re-named it Pass-Key and equipped it on 6 different models.In 1992 Pass-Key II was introduced with more improvements mostly diagnostic features.All of these systems have the same black resistor pellet in the ignition key.One of 15 different resistances.To get a reading off the key hold ohm meter leads on either side of the ignition key on the metal tab in the middle of the black pellet.




Posted By: Chris Luongo
Date Posted: January 06, 2007 at 9:04 AM
carstereoman,

If you have trouble holding your meter probes onto the little pellet on the key, then yes, you could measure it another way too.

Simply find the car's VATS wiring under the dash..........should be a very thin piece of orange tubing, with two thin wires inside.

Cut the tubing in half with your wire cutters......then slit the tubing open with a razor expose the two wires inside.......put your meter to the two wires that are coming from the steering column, while the key is in the ignition.

Are you experienced with a multimeter? Is it possible you are just using the meter wrong?

Your meter should be set for Ohms. When you touch the two meter leads together, you should get a reading of 0 Ohms, or very close. Also, if you already own resistors, try testing those for practice.

NOTE: The VATS wiring is in orange tubing. The airbag wires should be in a harness wrapped in yellow tape, with yellow plugs. Be sure not to confuse the two.




Posted By: imseth85
Date Posted: January 06, 2007 at 11:08 AM
Also make sure not to touch the wires with your fingers when you are testing them, it could give you a faulty resistor value.





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