Question about 2000 Honda Civic

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2000 Honda Civic battery drains when car is sitting

My car battery drains when it is off. To avoid draining I have to disconnect the battery everytime. I noticed that sometimes when I'm trying to disconnect I hear the AC clutch relay getting disengaged and if try to connect the battery back I hear it getting engaged. I'm not sure why the clutch is getting engaged even if the car is off.

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  • sudhakar_mb Nov 19, 2009

    I'm sure that AC clutch is drawing the current. But the clutch relay, supposedly, can only turn ON when ignition is ON. What do you think may be the reason why clutch engages even when car is off.

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It's called a dead short if you take off the + battery terminal and scratch it across the post of the + it will make small sparks if there is a draw. there shouldn't be any sparks at all unless something is on drawing power / eg clock will draw verry little and you almost wont be able to see any sparks or if you have a major draw it will spark like wild fire . if it sparks wildly , start unhooking things that you suspect drawing power and check for draw . might need to get a-c pump serviced. but find the power draw first.

Posted on Nov 19, 2009

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hey

First of how do you know if its actually the central locking thats draining your battery??? did you disconnect it and see if the battery still drained?? can you hear any noises coming from it when your inside the car as if its trying to open or close???
only thing i can think of is

If you have a rectifier go out on it.

A rectifier is basicaly a big diode. It allows electricity to flow one way. If it fails, electricity is allowed to go back thru it to ground while the engine is off.

or it maybe simple like a boot light not going out!

best of luck :)
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