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Old 06-19-2008, 08:03 AM   #1
runner19
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Member#: 39562
Join Date: Jul 2003
Chapter/Region: MAIC
Vehicle:
My02 WRX Sedan 5MT
WR blue

Default Battery draw

MY02 WRX sedan GDA 5sp manual

I'm getting a draw on the battery (when ign off) of 0.14 amps. What can I check to find the culprit.

Boot light is cold to the touch.
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Old 06-19-2008, 08:16 AM   #2
Mulder
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15 WRX/05 GTO

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You have to start disconnecting things, i.e. pulling fuses and unplugging stuff until the drain normalizes. Start with any aftermarket devices you have installed that connect to battery power.
Having the wiring diagrams for the car is helpful to determine what is connected to each fuse/circuit.
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Old 06-19-2008, 11:39 AM   #3
Bluefoton
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now with a HID retrofit

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Stupid question, but you didn't happen to measure that while one of your doors was open, and with the interior light on?
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Old 07-02-2008, 02:13 AM   #4
runner19
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WR blue

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Quote:
Originally Posted by Bluefoton View Post
Stupid question, but you didn't happen to measure that while one of your doors was open, and with the interior light on?
nope.

Also I popped the hood disconnected the battery and waited +10 mins before starting the test. But I will run the test for longer to get a avg draw (avg low/avg high on the fluke)
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Old 06-19-2008, 01:20 PM   #5
rkramer
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Location: North Dakota
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2015 WRX Limitec

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Just curious, but what is a 'normal' resting draw for a subaru? Guess I've never actually checked, but obviously the ECU, radio, and mileage LCD are going to draw some power.
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Old 06-19-2008, 02:41 PM   #6
ProdriveDreams
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Location: Boston / Ipswich, MA
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'02 WRB VF-39'd WRX
W/06 STi Drivetrain swap

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I would redo your parasitic draw test, get all setup, then comeback 10 minutes later. This will give anything in the car that stays on for a set amount of time after car was run, or door was open time to shut completely off.

If your still getting high draw, start pulling fuses one at a time till the draw drops. once you find that you can get a wiring diagram and start tracing down your cause.
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Old 07-02-2008, 03:30 AM   #7
Cougar4
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Winestone

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You state you disconnected the battery but did connect the current meter then so power was applied to the systems? The systems have sleep mode and power needs to be applied for them to work. If no activity happens in the electrical systems then the systems go to sleep, but power needs to be always applied without interruption.

Normal draw when things are asleep is about 0.030 amps.
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