Alarm question. - ZR-1 Net Registry Forums

mgbrv8 · 07-01-2013

Okay this happened before I did a bunch of work to my 91 Z and its still doing it. If I lock each door by hand or with the key the alarm dosent go off when I unlock it next time. Now if I use the lock switch to lock the doors next time I open it the alarm sounds until I put the key in the ignition. No I thought this had to do with my door switches cause my lights would stay on at time so I did the spacer mod and fix that buy the alarm issue is still there.

Dave

-=Jeff=- · 07-01-2013

the OEM is only 'armed' when the door is open and you use the power door lock

when you use the key and the alarm is set off when opening the door.. does this happen with both doors?

there is a wire to the door cylinder that is suppose to ground an alarm input to disarm it. That is where I would start looking

secondchance · 07-01-2013

If armed with power door lock and using key to open, turn the key to lock position before turning to unlock position. This will disarm the alarm.

mgbrv8 · 07-03-2013

I noticed something today. The lights were on again that I thought I fixed for anout ten min. . I opened and closed all the doors Giving a firm slam But it didn't turn off. So I went back in the car started it and then turned it off. And when I close the door that time The lights turned off. I wonder if my problem is a worn ignition switch or tumbler??

Dave

secondchance · 07-03-2013

Quote:

Originally Posted by mgbrv8

I noticed something today. The lights were on again that I thought I fixed. I opened and closed all the doors Giving a firm slam But it didn't turn off. So I went back in the car started it and then turned it off. And when I close the door that time The lights turned off. I wonder if my problem is a worn ignition switch or tumbler??

Dave

Dave,

I believe the interior lights are on time delay.
After you shut the door give it 2-3 minutes and see if the lights turn off.

mgbrv8 · 07-03-2013

It was well after 10min. And once I started and turn off the car they turned off emedetly.

Dave

scottfab · 07-03-2013

Quote:

Originally Posted by secondchance

Dave,

I believe the interior lights are on time delay.
After you shut the door give it 2-3 minutes and see if the lights turn off.

Mine (90) seem to be on a 30 second delay.

mgbrv8 · 10-17-2013

Okay I think I am honing in on it. Got in my car the lights were on again while the car was running I turned off the car with the door close the lights were still on. I rolled down the window and locked the door with my key from the drivers seat. I put the key back in the ignition and started the lights turned off. Is the switch on the drivers door key a problem or common occurrence??

Dave

QB93Z · 10-17-2013

I had symptoms similar to what you are describing on my 1994. The switch that tells the CCM that the door was unlocked with the key is inside the door, behind the door handle. In the manual it is called the Anti-theft Switch. If the CCM doesn't get the "key unlock" signal from that switch before the door open signal is seen, it sounds the horn. The door open signal comes from the door ajar switch. The door ajar switch located in the door edge and visible with the door open. It is a different switch than discussed above.

Here are some pictures of the door handle and switch:

It is a challenging job to take the door apart to replace that switch, but it can be done.

If you need a step-by-step, let me know. I just replaced it last week, and it solved all my alarm problems.

I got the switch (used) from CorvetteNutz.com.

Jim

mike100 · 10-17-2013

On mine it was the passenger door linkage not moving all the way into the locked position. The car thought it was locked electrically, but physically, the door did not lock. open the pass door and it went off.

Tweaked the bar to the door lock switch in the door panel and lubed everything thoroughly and it has not had an issue in over 2 years.

07-01-2013	#1
mgbrv8 Join Date: Jul 2009 Location: Texas Posts: 790	Alarm question. Okay this happened before I did a bunch of work to my 91 Z and its still doing it. If I lock each door by hand or with the key the alarm dosent go off when I unlock it next time. Now if I use the lock switch to lock the doors next time I open it the alarm sounds until I put the key in the ignition. No I thought this had to do with my door switches cause my lights would stay on at time so I did the spacer mod and fix that buy the alarm issue is still there. Dave

07-01-2013	#2
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,158	Re: Alarm question. the OEM is only 'armed' when the door is open and you use the power door lock when you use the key and the alarm is set off when opening the door.. does this happen with both doors? there is a wire to the door cylinder that is suppose to ground an alarm input to disarm it. That is where I would start looking __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

07-01-2013	#3
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,726	Re: Alarm question. If armed with power door lock and using key to open, turn the key to lock position before turning to unlock position. This will disarm the alarm.

07-03-2013	#4
mgbrv8 Join Date: Jul 2009 Location: Texas Posts: 790	Re: Alarm question. I noticed something today. The lights were on again that I thought I fixed for anout ten min. . I opened and closed all the doors Giving a firm slam But it didn't turn off. So I went back in the car started it and then turned it off. And when I close the door that time The lights turned off. I wonder if my problem is a worn ignition switch or tumbler?? Dave Last edited by mgbrv8; 07-03-2013 at 05:20 PM.

07-03-2013	#6
mgbrv8 Join Date: Jul 2009 Location: Texas Posts: 790	Re: Alarm question. It was well after 10min. And once I started and turn off the car they turned off emedetly. Dave

10-17-2013	#8
mgbrv8 Join Date: Jul 2009 Location: Texas Posts: 790	Re: Alarm question. Okay I think I am honing in on it. Got in my car the lights were on again while the car was running I turned off the car with the door close the lights were still on. I rolled down the window and locked the door with my key from the drivers seat. I put the key back in the ignition and started the lights turned off. Is the switch on the drivers door key a problem or common occurrence?? Dave

10-17-2013	#9
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,684	Re: Alarm question. I had symptoms similar to what you are describing on my 1994. The switch that tells the CCM that the door was unlocked with the key is inside the door, behind the door handle. In the manual it is called the Anti-theft Switch. If the CCM doesn't get the "key unlock" signal from that switch before the door open signal is seen, it sounds the horn. The door open signal comes from the door ajar switch. The door ajar switch located in the door edge and visible with the door open. It is a different switch than discussed above. Here are some pictures of the door handle and switch: It is a challenging job to take the door apart to replace that switch, but it can be done. If you need a step-by-step, let me know. I just replaced it last week, and it solved all my alarm problems. I got the switch (used) from CorvetteNutz.com. Jim

10-17-2013	#10
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: Alarm question. On mine it was the passenger door linkage not moving all the way into the locked position. The car thought it was locked electrically, but physically, the door did not lock. open the pass door and it went off. Tweaked the bar to the door lock switch in the door panel and lubed everything thoroughly and it has not had an issue in over 2 years.