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Joined: Mon Nov 07, 2016 11:22 pm
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Vehicle: Jimny 2009 1.3 M13A

Post Posted: Sat May 11, 2019 1:38 pm 
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Hi all,

Recently completed a M16a engine swap, working well, all good.

I had some issues with extreme battery draw, which I've narrowed down the the a/c compressor. There's a 2A draw on the battery with the engine off and the key out, which disappears when the a/c circuit fuse is removed, or when the wire to the a/c compressor is removed.

With the fuse in, hooking up the battery causes a relay to click around the compressor, and a lot of current is drawn, that has worn down my battery overnight on two occasions (tried changing the battery, still drains out).

I doubt it's related but sadly while wrenching the a/c compressor off we accidentally evacuated the gas to the universe (feel terrible for doing this). When removing one of the bolts, we must have knocked a high pressure pipe and slightly loosened its seal. Planning to get it leak checked and refilled, but with the engine off and nothing running, I can't imagine the compressor should be demanding any work of the battery.

I had a look at the wiring in case I'd missed something, and as far as I can tell, there's only one wire going into the compressor - I assume it's grounded via its physical interface with the engine.

Does anyone have any ideas what could be going on?

Cheers,
Richard

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