c4 anti theft system problem
Thread Starter
3rd Gear
Joined: Oct 2005
Posts: 3
Likes: 0
c4 anti theft system problem
[SIZE=1undefinedundefinedundefinedundefined]undefined[/SIZE]I HAD TO CHANGE MY IGNITION KEY LOCK CYLINDER. IN THE PROCESS MY ANTI THEFT SYSTEM ACTIVATED AND I CANNOT GET IT TO RESET. NORMALLY THIS CAN BE DONE BY DISCONNECTING AND RECONNECTING THE POSITIVE BATTERY CABLE. 1984 CORVETTE NO CODED KEY. SURE COULD USE SOME HELP ON SOLVING THIS PROBLEM. ALSO I HAVE NO POWER TO THE DASH, ALL I GET IS THE RADIO AND THE FLASHING FRONT AND REAR LIGHTS FROM THE ANTI THEFT SYSTEM. THE ENGINE WILL NOT START NO POWER TO THE SYSTEM.
Last edited by tck; Oct 11, 2005 at 09:59 AM. Reason: MORE INFORMATION
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
I thought the anti theft system was activated by the door switches.Have you tried turning the key in the door locks to reset.
The VATS (coded key ) on later models only disables the engine and is independent from the anti theft as far as I know.
The VATS (coded key ) on later models only disables the engine and is independent from the anti theft as far as I know.
Instructor
Joined: Jun 2004
Posts: 155
Likes: 1
From: Melbourne Florida
need to know what year of car. On most 84s, door key lock will disable alarm and once inside you can hit the auto unlock and it will keep the alarm off until you hit the door lock(mine seems to have the fastest auto lock in the world, close the door and it's locked). If you have keyless and the fob doesn't work you need to find the external brain for that alarm, you need to use a switch across the blue connector to sync the alarm to the fob. The brain should be on the drivers side behind the sond buffers as this depends on the installation company.
I hope this helps....
Woody
I hope this helps....
Woody
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
When I once triggered my system all it took to deactivate it was starting the engine.
If that doesn't work you might try just using the button to electrically unlock both doors. Since locking the doors arms the system, unlocking them should disarm it.
If that doesn't work you might try just using the button to electrically unlock both doors. Since locking the doors arms the system, unlocking them should disarm it.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Do you have an aftermarket alarm?
If it's the stock system, what's mentioned should work. Otherwise, I'd dry disconnecting the TDM. That will prevent it from disabling the starter relay in the meantime.
If it's the stock system, what's mentioned should work. Otherwise, I'd dry disconnecting the TDM. That will prevent it from disabling the starter relay in the meantime.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
I doubt that's the case unless it was a custom install and interfaces with the signals to the TDM. Otherwise it simply can't arm/disarm the doors properly.
Test it out... put your window down. Shut the door, lock it with your keyless. Then reach in, unlock the door from the door panel switch, and open it. If your system is armed, this should trip the factor alarm. Unless your factory alarm/tdm is unplugged. If your system just isn't arming with the keyless, then you have had no alarm/horn protection.
Test it out... put your window down. Shut the door, lock it with your keyless. Then reach in, unlock the door from the door panel switch, and open it. If your system is armed, this should trip the factor alarm. Unless your factory alarm/tdm is unplugged. If your system just isn't arming with the keyless, then you have had no alarm/horn protection.
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Thread Starter
3rd Gear
Joined: Oct 2005
Posts: 3
Likes: 0
Originally Posted by CentralCoaster
I doubt that's the case unless it was a custom install and interfaces with the signals to the TDM. Otherwise it simply can't arm/disarm the doors properly.
Test it out... put your window down. Shut the door, lock it with your keyless. Then reach in, unlock the door from the door panel switch, and open it. If your system is armed, this should trip the factor alarm. Unless your factory alarm/tdm is unplugged. If your system just isn't arming with the keyless, then you have had no alarm/horn protection.
Test it out... put your window down. Shut the door, lock it with your keyless. Then reach in, unlock the door from the door panel switch, and open it. If your system is armed, this should trip the factor alarm. Unless your factory alarm/tdm is unplugged. If your system just isn't arming with the keyless, then you have had no alarm/horn protection.
