Jump Started Someone Yesterday - Theft Deterrent Problems Today

[Jagmeister]

Two days ago I helped someone jumpstart their car. In spite of a specific instruction "red on positive" they hooked the cables up backwards. Took me a minute to figure it out and fix it. Did not notice any problems at the time and have started and driven the car normally six or eight times since then.

This morning I went out to start the car and got the blinking "Security" on the instrument panel and then:

Starting Disabled - Theft Deterrent System - Remove Ignition Key - Wait 3 minutes - and so on.

I've owned this car for six years and never seen this before. Nothing I do seems to clear the problem.

I even disconnected the car battery for awhile hoping that whatever was stuck would clear up but no luck. I poked about in the archives and saw references to the resistor chip in the key...tried the second key...tried the WD-40...nothing phases it.

Not sure where else to look. Have I blown something up? Can I just disable the TDM somehow?

Thanks,

Matt

PS: It's 94 Seville SLS and am getting the following codes from the DTC:

P052

P109

I052

S012

S013

S015

S017

S018

S044

S073

[Ranger]

Ouch! Hard to say what may have fried. Try disconnecting the battery for 10 minutes.

[Jagmeister]

Ouch! Hard to say what may have fried. Try disconnecting the battery for 10 minutes.

Ten minutes eh? I did disconnect it for a few minutes but not that long. I'll see if longer makes a difference. It's raining outside now so will probably wait til morning

[BodybyFisher]

I NEVER jump anyone with my Cadillac, EVER. Too much can go wrong, especially overloading the alternator/diodes

As Ranger noted, disconnect the battery and let the system reboot, its possible that you caused a dropout

[JimD]

I NEVER jump anyone with my Cadillac, EVER. Too much can go wrong, especially overloading the alternator/diodes

I would not hesitate to jump-start a stranded mom with several restless youngsters in a rainy grocery store parking lot.

But my rules would apply:

My cables

I connect the cables

My engine is OFF

Otherwise, here is my phone, call someone else.

Good luck with disconnecting the battery for an extended period as a possible fix. If something has been fried, that something has been fried for all time.

It ain't going to heal itself. Pardon the vernacular.

[Jagmeister]

Good luck with disconnecting the battery for an extended period as a possible fix. If something has been fried, that something has been fried for all time.

It ain't going to heal itself. Pardon the vernacular.

I could care less about the security system...I just need to be able to start and drive the car.

Where is the PCM and TDM module located in case I need to go find one at the junkyard?

[BodybyFisher]

Good luck with disconnecting the battery for an extended period as a possible fix. If something has been fried, that something has been fried for all time.

It ain't going to heal itself. Pardon the vernacular.

I could care less about the security system...I just need to be able to start and drive the car.

That statement is funny as hell, so arrogant, I just need to start and drive the car....haha...

Well, meister, if you FRY the security system, you WON'T be able to start and drive the car... hows that for arrogant? I advise you buy a factory service manual, you are gonna need it with that attitude

Jim, not to contradict you, you know how much I respect your electronics experience and expertise, but me?, I would call me mom a cab or drive her home. I have seen too many problems occur to both vehicles.

See this, its interesting how deep this interaction gets, and shows that some have experienced problems while others have not... I am not a risk taker

http://www.exploroz....iring%2522&pn=1

[Bruce Nunnally]

This does not sound as if jumping the car caused the problem. The key/resistor wear over time, and this is an eventual maintenance item. You can either replace the ignition tumbler and key or you can wire around the security system. There is info here on the forum about either; wiring around the system involves measuring the resistance of the pellet in your specific keys and wiring a similar resistor into the circuit.

Relevant post here: http://caddyinfo.ipbhost.com/index.php?showtopic=27381&st=0&p=164959&hl=add%20resistor&fromsearch=1entry164959

[BodybyFisher]

This does not sound as if jumping the car caused the problem. The key/resistor wear over time, and this is an eventual maintenance item. You can either replace the ignition tumbler and key or you can wire around the security system. There is info here on the forum about either; wiring around the system involves measuring the resistance of the pellet in your specific keys and wiring a similar resistor into the circuit.

Relevant post here: http://caddyinfo.ipb...=1entry164959

Good thinking Bruce, it may well be unrelated to the jump

[Jagmeister]

This does not sound as if jumping the car caused the problem. The key/resistor wear over time, and this is an eventual maintenance item. You can either replace the ignition tumbler and key or you can wire around the security system. There is info here on the forum about either; wiring around the system involves measuring the resistance of the pellet in your specific keys and wiring a similar resistor into the circuit.

Relevant post here: http://caddyinfo.ipbhost.com/index.php?showtopic=27381&st=0&p=164959&hl=add%20resistor&fromsearch=1entry164959

Thanks Bruce...I hope you're right and this problem is unrelated. I did make nine uneventful trips after the jumpstart event. It's probably just coincidental. I looked at the post you provided and that seems like a reasonable diagnostics step.

I have some pages of the factory wiring diagrams that another helpful member sent me some years ago but I'm not finding the security system on them. The only thing I can find on the wiring diagram is a red wire from the ignition switch to a inline fuse that goes to the theft deterrent relay. There is also a brown wire shown that goes from the ignition switch to a "RAP Relay". What does RAP stand for? I searched for it in the archives but nothing turned up

UPDATE: That was the problem. I found a nice article here: http://vats.likeabigdog.com/ that details the fix. I used a 10k potentiometer that I had laying around, matched the resistance of the key and used it to test the fix. Now it's off to Radio Shack to pick up the parts for the permanent fix.

[Ranger]

Good luck with disconnecting the battery for an extended period as a possible fix. If something has been fried, that something has been fried for all time.

It ain't going to heal itself. Pardon the vernacular.

I agree Jim, it was just a shot in the dark with crossed fingers.

[BodybyFisher]

Good luck with disconnecting the battery for an extended period as a possible fix. If something has been fried, that something has been fried for all time.

It ain't going to heal itself. Pardon the vernacular.

I agree Jim, it was just a shot in the dark with crossed fingers.

Given the original post it was natural to associate the problem with jumping the vehicle, the owner himself associated the problem with jumping

[flasht62@fairpoint.net]

I had a similar problem a month ago had nothing to do with jumping a car i was replacing brakes\

turned out to be a broken wire in the ignition switch i got it replaced and now its fine

the dealer charged me about 350.00 for the switch but i see g/m sells them for less than 100.00

gordon