WTF theft system

R

RonB

Registered
I remvoed my driver seat to do a repair on the track and I removed my driver side door panel to fix a noise with th window I put every thing back to gether now my car wont start and my anti theft light flashes dose anyone know what i can do its a 97 LSC Thanks :mad:
 
Sounds like a PATS(Passive Anti-Theft System) issue. Here's an excerpt from one of our resident FLM experts on this topic...

When you put your key in the ignition, the PATS transponder recognizes the key's frequency and tells the SCIL (Steering Column/Ignition/Lighting) module to accept ignition switch position signals. As you turn the ignition switch to run, the SCIL recieves that run signal and energizes the PCM power relay, bringing the PCM alive. An electronic "handshake" then occurs among all modules in the multiplexed network. If certain criteria are met, we can continue to the next step: When you turn the ignition switch to "Start", that signal passes through the starter interrupt relay mentioned earlier and then through the DTR sensor back to the SCIL. If the SCIL is happy with the "handshake" it will ground that signal and allow the starter to engage. If there's ANY problems in ANY of these steps the engine won't crank.

Good news, though. If it's a multiplex problem, you'll have definite indications.
-The "Check Engine" light won't come on and prove out when you first turn the key.
-The "Theft" light will flash very rapidly when you turn to the Run position.
If you see these, I can assure you there will be codes in the system. You may have to do a full scan of all OBDII modules.
Click to expand...

Check the battery charge - if the door was open for a long period, the battery save feature may have kicked in. I had that happen once.

Hook up a battery charger, shut and lock all doors, then unlock using the remote key fob. That has worked before.
 
I bet the nose in the drivers side window was the rear window track bolts being loose :) I still gotta remove mine to do that!

Umm...just curious, why/what would you need to remove the seat to repair something at the track?
 
Oh thanks for all the help it ended being just a dead battery im putting in a new one today and to remove the front seat it was 2 bolts in the rear and two screws in the front then theres two main wire harness to unplug and one small one for the seat belt alert and it comes out
 
RonB said:
... it ended being just a dead battery im putting in a new one today ...
Click to expand...

You may want to get new battery terminals, good HD ones as the OEM tin pieces are problematic and may have contributed to the battery issue.

I've learned over time that anytime I have the doors open working on the car for very long at all, I disconnect the battery or hook up a battery charger. :wink2-green
 
Well you learn from your mistakes and Thanks for the terminal tip thats a good idea PS. I LOVE MY NEW CAR
 
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