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security malfunction!


joshpb

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I have a 1999 cadillac deville. I was working on dtc acm 1312. High side short circuit. Nooow.. The car will not start. All i hear is clicking coming from the fuse and relay area under the hood. Security light is flashing on dash. No lights are coming. No door ajar inside lights etc.. Any help or ideas? Is it the PCM??

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O and when i try to get the codes with a scanner it just wont work. Its effecting the scanner as well. It works fine until i plug it into the car. And as the car ticks the screen on the reader flashes.. Soo weird. 

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Nothing was\is working. It really seems like the symptoms of a dead battery. Before the car went completely dead the abs and traction control were present. Then nothing but the security. I checked this morning and nothing.  No security light. The inside lights dont come on when i open the door either

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Sounds like a dead battery that deep cycled, and could be damaged now.  Depending on the age, you might want to consider a new one.  If older than 4 years, just replace.  If it's newer, you could chance it, and charge it back up and see.  Yes, abs, and all does flash when the voltage is low because of a dead battery.  As you were working on the car, the interior lights, and electronics drained the battery.

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That is what I was thinking this morning, after talking to people and re reading my own thread. Im going to take it in to have it tested, i am pretty sure I have a warranty on it still. Thank you for the Information. Ill be back on to tell the results. 

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I posted on the other thread, this is a bad battery

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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