C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

security system question?

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Old Aug 2, 2014 | 09:21 PM
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Default security system question?

my vat system is functional my question or problem is every once and a while my flippen horn starts beepin and the only way i can stop it is to pull the negative and clear the emc. can someone direct me to a good read on how that part of the security system works.
thanks steve
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Old Aug 2, 2014 | 09:58 PM
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I recall correctly, if the car is locked with windows down/ top off or down and you reach in and unlock it manually & open the door the only way I know to turn it off without taking off the battery terminal is to insert the door key and lock/unlock it. Not sure if this is of any help with your issue but the only resolution I recall.

Last edited by indallas1978; Aug 2, 2014 at 10:01 PM.
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Old Aug 3, 2014 | 04:27 PM
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don't think VATS has anything to do with the horn. Why don't you think it is a problem with the horn switch or alarm system? More detail might help.

Last edited by markKlein; Aug 3, 2014 at 04:31 PM.
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Old Aug 3, 2014 | 08:01 PM
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If either door ajar switch is bad it'll cause the horn to sound, (replace the door ajar switch). Inserting the door key into the drivers side door should stop the horn.

If not, the door lock wire, could've also, come loose or broken off?
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Old Aug 4, 2014 | 04:52 AM
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The TDS (Theft Deterrent System), also known as UTD (Universal Theft Deterrent) is disarmed by unlocking the door with the key (or a keyless entry system). Sometimes if you don't return the key cylinder to the fully vertical position the TDS will still be armed and will honk the horn when you open the door.
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Old Aug 4, 2014 | 11:56 AM
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thanks for all the info guys im going to replace my door ajar switches there both broke.
i had no idea the door key was part of security system thanks again
steve
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