Question about 1993 Buick Century

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'93 buick century battery drain

Battery drains 24 hrs will not start. pulled ctsy fuse and drain stops. What does the ctsy fuse control?

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  • mabarney43 Jan 03, 2013

    Drain is comming from ctsy fuse. When pulled out the drain stops


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Maybe your glove box lite or trunk lite shut-off switch failed. try pushing the shut off button with glove box door or trunk lid open. if lite stays on, the switch is bad and could be your problem

Posted on Jan 03, 2013

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Unhook hot wire to alt at night if batt is up the next morning it is the alt

Posted on Jan 03, 2013

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SOURCE: Heater blower won't cut off, even with ignition turned off

try looking at your x relief relay it may be sticking

Posted on Jan 15, 2009

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SOURCE: Where is the radiator drain plug on 2003 Buick Century?

just pull out the holes.

Posted on Jan 17, 2009

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SOURCE: The fuse panel to my 1995 Buick Roadmaster is not labeled

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Posted on Apr 15, 2009

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SOURCE: 1994 buick roadmaster battery drain pulled fuses

I would check the starter and the alternator, also check the battery cables and connections nd check any circuit with a fuse of more than ten amps for a short to ground. Sounds like you might have some bad diodes in the alternator, though.

Posted on May 22, 2010

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SOURCE: small drain on battery when off, enough to drain

pull positive cable off battery hook up a test light between cable and battery start pulling fuses until test light go dim to find out what circuit drain is on

Posted on Jun 08, 2010

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1 Answer

Something keeps draining the battery on our 2004 dodge ram. the battery is new. it stays charged for 5 or 6 hours then it goes completely dead.

then you need to start doing the process of elimination. you can either pull out fuses and see if it stops the drain.pull out 2 or 3 at the time to save time. if it stops the drain. reinsert one at the time till the drain starts again. then you will know approximately where the drain is .. or you may also use a measuring device to see how much amperage is passing through the fuses... you are looking for around 9 or 10 amp drain if you loose a battery in 5-6 hrs .

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youtuube videos are useful source for info about checking for the drains for first timers

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What can brain my battery in a 2003 Buick centery

Check for any lites left on, under the hood, interior, everywhere. The best time to check is in the dark.

If access amp drain, pull/replace fuses, one at a time. When you pull the fuse on the faulty circuit the access drain goes away.

Sometimes the battery can drain back through a faulty alternator.

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Electrical draw CTSY FUSE

I wonder if the buzzing is coming from the key switch ? (ignition ) . CTSY is always HOT ! you need a wire diagram to see where CTSY wires travel to & from to isolate this draw . I found that the CTSY 20amp fuse is also wired to the parking lights 20A fuse @ fuse block . start there, check all wires, grounds to parking lamps, and switch, it might be your headlight switch thats causing your problem ! replace it and see what happens !

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New battery in Toyota Camry will not hold charge more than 24 hours

You need to do a parasitic load test.(this will require a DC ammeter).I prefer to test with a clamp-on type meter for a faster draining condition like this.Most people don't have this kind of test equipment,so the only other way is to just look for things staying on.A battery draining in 24 hrs is probably a 1-2 amp load.Try looking at the trunk light(gotta start somewhere).I have found glove box lights,vanity mirror lights,and underhood light staying on before.(I even remember a Chevy Blazer that had a 16 amp drain because the rear wiper motor wasn't parking correctly!)If there isn't anything obvious,then pull one fuse at a time until the battery drain stops(start with things you can drive the car without).

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This fuse is for the body control module, so your draw is probably something controled by the bcm. Get a manusl, get a list, and eliminate them one by one until your draw is gone! Good luck, let me know if you need any more help!

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What is the CTSY Fuse? And why do I have a voltage drain in this circuit?

CTSY is the courtesy lamps, the lights that come on when you open the door. You have a drain because something on that circuit is not turning off or a wire may be rubbed bare. Start checking by removing the bulbs from the sockets to see if that kills the drain. If there is a light in the trunk or under the hood remove those too. This should stop the drain. Then replace them one at a time to see which one is the culprit. When you replace the hood and trunk ones make sure the lids are closed when you test. Otherwise you are looking for a chaffed wire somewhere. Hope this helps.

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Wiring Diagram for 1996 Buick Century

Completely remove the dome lite positive wire from the dome lite. If that doesn't fix it, then remove the door lock harness from the back of the door lock switch. Etc, etc. It will eventually indicate which is the problem by the process of elimination. I'd try that method. Eliminate each of the remaining items, until the drain stops. Garcuda

Apr 14, 2010 | 1996 Buick Century

1 Answer

Dead battery after 24 hrs wont hold the charge! baterry is new

Find the battery drain. Disconnect negative cable from battery. Place test light between pattery negative post and disconnected negative cable. If light is bright while no accessories are on, there is a drain. While keeping the test light in this configuration, pull each fuse out and replace on at a time while watching test light. If the light dims or goes out when a particular fuse is out, that identifies which circuit has the drain. Use that information to track down what is on or draining.

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1994 Buick Century Won't Start

no most likely have another problem u might have pushed another fuse out of socket check that then look for a power fuse check battery it may have drained whike the door was open or ing switch left on . u can clean battery post untill they shine and the battery cable ends toomake sure it is in park and for good measure turn key on foot on brake move into drive and back to park in case nutral safty switch was jammed

Jun 30, 2009 | 1994 Buick Century

2 Answers

Battery drains

This is a very difficult task.

One way to narrow the possibilities is to connect and ammeter between the battery ground cable and the battery (disconnect the ground cable first).

Start pulling fuses until the current draw goes to zero. That will tell you which electrical subsystem is causing the drain.

Then you start probing that subsystem. A good possibility is a stuck relay.

It's not a short unless it's a resistive short. A short would have already taken care of the drain problem by blowing a fuse or burning up something.

Apr 21, 2009 | 1994 Buick Century

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