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View Full Version : voltage leak (on car) can you help?


gasmanrus
09-Apr-2006, 18:25
i got fed up with jumpstarting my car every 2 days so i got the multimeter out today. set it to amps, removed the -ve terminal and connected it in line.
ive read that a drain of 0.075A is enough to drain a car battery overnight & i saw a reading of 0.22A with ign off & interior lights etc off.
i then removed & fuses & found the current dropped to 0.02A when the central locking fuse was removed.
what can be causing this voltage leak? i dissconected the 2 central locking motors in the doors ( i was about to dissconect the boot & fuel cap motor/solenoid but it started raining!)

any ideas would be appreciated

rus

antonye
09-Apr-2006, 19:12
Sounds like one of the motors is screwed. Be a good idea to disconnect them one at a time to isolate it, then replace it.

AL900SL
09-Apr-2006, 19:20
What car is it Rus and does it have an OE or after market alarm. Does the alarm plip activate the locking, as it could be a drain throught this.
Cheers

gasmanrus
09-Apr-2006, 20:58
will be checking the other C.L. motors ant.
AL, its a bmw 320 with an o.e. alarm, but it does seem to appear to be coming from the C.L. circuit, i just thought the doors would be locking 7 unlocking to have to be using current??

cheers though

Loz
10-Apr-2006, 00:16
BMW, eh? Probably the electronic management system working out Pi to 150,000 decimal places.

<runs away>

final_edition
10-Apr-2006, 00:56
Also check the CL switches for continuity.

uncle porry
10-Apr-2006, 11:48
could be a relay stuck on & drawing power constantly...might be worth checking the c/l locking relay...