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Old Oct 15, 2018 | 09:45 AM
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CaptainTommy
Joined: Apr 2018
Posts: 13
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From: St Augustine Beach FL
Default Re: Another Battery Drain Thread

Originally Posted by pizzaguy
Anything over 55ma (.055 amp) is out of spec. The ONLY way to find these is with a meter inline with the battery cable - PERIOD. You can guess all you want to, but you have GOT to put a meter in line and see what you have. You then pull fuses or connections until you find where the current is going.

Always remember that if you power the car up, it takes time for the modules to hibernate so:
  • Turn key off.
  • REMOVE KEY from ignition.
  • Disconnect battery cable, insert ammeter
  • Close doors and trunk lid.
  • Observe current reading, it will be as high as 350ma
  • WAIT 90 seconds.
  • Observe current reading - after the 90 seconds, you should see no more than .055 amp (55ma).

If you see more than 55ma, start pulling fuses until you find out where the current is going. Always make SURE the dome light switch is set either to "normal" (dome and trunk lights go out in about 20 seconds) or "off" (disables dome and trunk lights). But STILL, you have got to wait 90 seconds - the various modules in the car take time to hibernate.
Yes, this is the method I have been using to troubleshoot. As for my progress, I have eliminated all but the Garage Opener/Tire Pressure Monitor and the Body Control Module from the items supplied by Fuse #9. I have also checked the fuses in the Relay Control Module, no change in the 190mA draw. Next task- search for the elusive Splice S233...
 
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