security light
Thread Starter
Registered User
Joined: Oct 2014
Posts: 251
From: CALI.L.A.- Las Vegas
security light
why does my car make the security light come on
and makes the car not start but i have to unplug the single
relay that the ignition switch is connected to until the light goes out then
plug the relay back in and then it will start? anyone ever have this odd steps
and makes the car not start but i have to unplug the single
relay that the ignition switch is connected to until the light goes out then
plug the relay back in and then it will start? anyone ever have this odd steps
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: security light
Theft deterrent relay has 4 wires - 2 yellow, one purple, one yellow/black.
You pull the relay, the SECURITY light goes out, and the engine starts. When does the SECURITY light come on again? Is it always staying on solid, not flashing?
When the SECURITY light is on, does the starter engage, and crank the engine, just won't start? Or does is disable both the starter and the fuel?
4th Gen LT1 F-Body Tech-PassKey/VATS
You pull the relay, the SECURITY light goes out, and the engine starts. When does the SECURITY light come on again? Is it always staying on solid, not flashing?
When the SECURITY light is on, does the starter engage, and crank the engine, just won't start? Or does is disable both the starter and the fuel?
4th Gen LT1 F-Body Tech-PassKey/VATS
Thread Starter
Registered User
Joined: Oct 2014
Posts: 251
From: CALI.L.A.- Las Vegas
Re: security light
if the light comes on it stays on solid and when I pull the relay and wait 3 mins or so the light will go out like it reset and then im able to start the car, while the light is on
the starter will not engage and I don't think the fuel pump is coming on either
the starter will not engage and I don't think the fuel pump is coming on either
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: security light
What you may be seeing is the Theft Deterrent Module (TDM) reacting to in incorrect resistance value. This if from Rob/Shoebox's guide to the PASS-Key system:
You have to figure out what relay you are unplugging, and why that allows the correct resistance signal to get to the TDM when you unplug and reconnect the connector.
You indicate it has a green wire and two yellow wires. Where is it located? Does it look like a GM part, or is it possibly aftermarket?
4th Gen LT1 F-Body Tech-PassKey/VATS
http://shbox.com/1/pass_key.jpg
Abnormal Operation
If the key pellet is the wrong value, the TDM will not send signals to allow the starter to engage or fuel to the engine. The TDM will shut down for ~3 minutes and the SECURITY lamp will remain lit with the key ON or OFF. When the ~3 minute timer has expired and the key is cycled from OFF to ON, the TDM timer is reset. If you try a key with the correct pellet value, the engine should start and run. SECURITY lamp should be off. If there is still a problem with reading the key, the TDM will light the SECURITY lamp and start the ~3 minute timer again.
If the key pellet is the wrong value, the TDM will not send signals to allow the starter to engage or fuel to the engine. The TDM will shut down for ~3 minutes and the SECURITY lamp will remain lit with the key ON or OFF. When the ~3 minute timer has expired and the key is cycled from OFF to ON, the TDM timer is reset. If you try a key with the correct pellet value, the engine should start and run. SECURITY lamp should be off. If there is still a problem with reading the key, the TDM will light the SECURITY lamp and start the ~3 minute timer again.
You indicate it has a green wire and two yellow wires. Where is it located? Does it look like a GM part, or is it possibly aftermarket?
4th Gen LT1 F-Body Tech-PassKey/VATS
http://shbox.com/1/pass_key.jpg
Registered User
Joined: May 2012
Posts: 214
From: Long Island, NY
Re: security light
For what its worth, I had a similar problem with the Security light ON after doing some maintenance and got grease from my grubby hands on it. Wipe it with a soft rag which corrected the problem. Hope yours is as simple.
Registered User
Joined: Aug 2009
Posts: 769
From: las vegas
Re: security light
[QUOTE=blac94Z;6976821]why does my car make the security light come on
and makes the car not start but i have to unplug the single
relay that the ignition switch is connected to until the light goes out then
plug the relay back in and then it will start? anyone ever have this odd steps[/QUOTE
Any luck bro on ur security light
and makes the car not start but i have to unplug the single
relay that the ignition switch is connected to until the light goes out then
plug the relay back in and then it will start? anyone ever have this odd steps[/QUOTE
Any luck bro on ur security light
Thread Starter
Registered User
Joined: Oct 2014
Posts: 251
From: CALI.L.A.- Las Vegas
Re: security light
no luck and I think its overloading the pink wires running to the ignition switch bc my harness got burned again , what could be causing the two pink wires going to the ignition switch to keep burning up/ I traced the pink wires down and I found that the prev owner had a alarm hook into the car and two wires run into the pink wires could this be part of my problem
Thread Starter
Registered User
Joined: Oct 2014
Posts: 251
From: CALI.L.A.- Las Vegas
Re: security light
ok I have a update now I took all the black tape from under my dash and zip ties now I can see I have a viper alarm system that runs from the relay that I mentioned with the
2 yellow wires -1 green wire-1 orange and 1 black
the yellow wires are (black taped) to the pink wire for the ignition
could this be possibly causing my problems and under the hood I noticed that the
alt. red wire runs to the batt. junction wire the all the fusible links are connected
2 yellow wires -1 green wire-1 orange and 1 black
the yellow wires are (black taped) to the pink wire for the ignition
could this be possibly causing my problems and under the hood I noticed that the
alt. red wire runs to the batt. junction wire the all the fusible links are connected
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