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theft protection car not starting


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ezzy
Novice

Dec 20, 2010, 8:23 PM

Post #1 of 11 (2481 views)
theft protection car not starting Sign In

1991 Cadillac Sevelle car won't start has security pelet on key, theft protection comes
up on computer say's to wait 3 min's then try an start again. Did that about 15 times
mesg keeps popping up. How do I overide or disconect this handy option since it's
stranded in a parking lot only have 1 key & I guess its wore down.
Thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 20, 2010, 8:25 PM

Post #2 of 11 (2471 views)
Re: theft protection car not starting Sign In

PASSKEY SENSOR BYPASS

The most common failure in these is the sensor in the ignition lock that reads the key pellet. That would mean replacing the ignition lock with a sensor included.



That sensor can be bypassed. You would need a digital ohmmeter to measure the resistance of the pellet in the key. Now go to Radio Shack and buy a resister of the exact same value as the key pellet. Go to the base of the steering column and locate the two thin white wires that go up to the sensor. Cut the two wires and solder the resister between the two ends coming from the harness. This will permanently bypass the sensor but not the rest of the system.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ezzy
Novice

Dec 20, 2010, 8:32 PM

Post #3 of 11 (2465 views)
Re: theft protection car not starting Sign In

Thanks


ezzy
Novice

Dec 20, 2010, 8:57 PM

Post #4 of 11 (2458 views)
Re: theft protection car not starting Sign In

Hey Hammer, What if I just cut those 2 white wires will it start?
I'm just trying to get it home before it gets stripped.
Thanks


Sidom
Veteran / Moderator
Sidom profile image

Dec 20, 2010, 9:13 PM

Post #5 of 11 (2458 views)
Re: theft protection car not starting Sign In

The ghetto method. This requires 2 keys, the 2nd doesn't need a pellet, it just needs to be able to turn the lock cyl.

Find the 2 correct wires HT posted. There will be a small connecter between the lock cyl & harness going to the module. Disconnect the connector & cut it on the cyl side with at least 3 to 4" of wire to work with. Tape/glue/use a stick gum to attach the wire to each side of the pellet of the key and plug it back into the main harness. Using the other key, start the car.

If the problem was broken wires in the lock cyl (70 to 80% of time the problem) the car should start & run.....


ezzy
Novice

Dec 20, 2010, 9:25 PM

Post #6 of 11 (2451 views)
Re: theft protection car not starting Sign In

Thanks McGiver your the man Hammer.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 21, 2010, 3:48 AM

Post #7 of 11 (2445 views)
Re: theft protection car not starting Sign In


Quote
Hey Hammer, What if I just cut those 2 white wires will it start?


Definitely not!!. It has to transmit the correct resistance or it will disable the system.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ezzy
Novice

Dec 21, 2010, 3:59 PM

Post #8 of 11 (2437 views)
Re: theft protection car not starting Sign In

I got a 1.8 of key pellet, that sound right to you are I'm I doing something wrong.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 21, 2010, 4:35 PM

Post #9 of 11 (2433 views)
Re: theft protection car not starting Sign In

Here are all the possible choices
Yours would seem to match the 1.870






~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Dec 21, 2010, 4:36 PM)


ezzy
Novice

Dec 21, 2010, 5:28 PM

Post #10 of 11 (2426 views)
Re: theft protection car not starting Sign In

Thank you Sir.


oxracing
User

Jan 18, 2011, 10:39 AM

Post #11 of 11 (2341 views)
Re: theft protection car not starting Sign In

Hammer is right on with his advise, have done this hundreds of time to these vehicles, also the 2 small wires are usually encased in a orange sheath. and they are very very small






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