joshpb Posted November 30, 2016 Report Share Posted November 30, 2016 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?? Quote Link to comment Share on other sites More sharing options...
joshpb Posted November 30, 2016 Author Report Share Posted November 30, 2016 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. Quote Link to comment Share on other sites More sharing options...
KHE Posted November 30, 2016 Report Share Posted November 30, 2016 Why are you using a scanner? Use the onboard diagnostics. Quote Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
joshpb Posted November 30, 2016 Author Report Share Posted November 30, 2016 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 Quote Link to comment Share on other sites More sharing options...
winterset Posted November 30, 2016 Report Share Posted November 30, 2016 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. Quote Link to comment Share on other sites More sharing options...
joshpb Posted November 30, 2016 Author Report Share Posted November 30, 2016 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. Quote Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 30, 2016 Report Share Posted November 30, 2016 I posted on the other thread, this is a bad battery Quote 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 Link to comment Share on other sites More sharing options...
joshpb Posted December 1, 2016 Author Report Share Posted December 1, 2016 Yup! You were right! Car starts up again. Going to stick on the other thread that way im not going back and forth. Thanks everybody for the help and advice. Quote Link to comment Share on other sites More sharing options...
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