BATTERY DRAIN PROBLEM

  • Tiny
  • huntleyscott86
  • 1999 Chrysler Concorde
  • 150,000 miles

I have been trying to figure out the root cause for my car going dead over the weekends. Does fine during the week I drive it everyday on the weekends it sits till Monday. And of course the battery is dead. I disconnected the negative on the battery and with the car off found a draw of.8 amps. I removed all fuses and tested the draw again and had no amp testing each fuse one at a time found the following.

.062 TCM
.001 Sun Roof
.116 Stop Lamps
.62 Park & Horn
.002 ASD

.8 amps with all fuses installed

Just wanted to see where to go now with these numbers.

Sunday, October 9th, 2011 AT 9:04 PM

7 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,315 posts

That shouldn't kill the battery in 2 days. Are you sure the battery is good? How old is it?

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Sunday, October 9th, 2011 AT 9:10 PM
  • Tiny
  • huntleyscott86
  • Member

Brand new battery only a month old

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Sunday, October 9th, 2011 AT 9:16 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,315 posts

The largest draw is from the horn / park. Try leaving that fuse out to see if it changes things. If it does, you will need to start looking for a short.

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Sunday, October 9th, 2011 AT 9:30 PM
  • Tiny
  • huntleyscott86
  • Member

I have found a 1.2 amp draw across fuse 19 Interior lights. I have read online the PCM and TCm could be the cause so I have disconnected both and no change the the draw. Anything I should check.

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Saturday, October 15th, 2011 AT 7:52 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,315 posts

Does the draw stop when you pull the fuse?

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Sunday, October 16th, 2011 AT 12:09 AM
  • Tiny
  • huntleyscott86
  • Member

Yes

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Tuesday, October 18th, 2011 AT 10:34 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,315 posts

There has to be a short in the wiring to that circuit. It's time to start tracing circuits for damaged wires.

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Tuesday, October 18th, 2011 AT 10:52 PM

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