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Old 02-04-2013, 05:55 PM   #1
justcarlos
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Member#: 322917
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Mundelein, Il
Vehicle:
94 BMW 525i
Black

Default issue on 07 outback

Not a wrx/sti but thought i'd ask around for any advice.

2007 Subaru Outback Wagon 2.5 N/A (ej25) 61k miles

The car sat for a while at my friends place and was jumped to get it going. He then said that it ran rough, popped the codes P0700, P0748, and P1718. And on top of that the power windows don't work at all and neither do the headlights. There is also a very loud buzzing noise after a while with the key on engine off in the underhood fuse box area. Someone also couldn't get it to shift so they slammed it and broke the metal peice in the shift solenoid right under the shifter, but got that working on a temp fix until i get the part for it. As of right now the car runs fine but has these issues. Here's a list of what i've checked:

fuses- all good cant find a bad one
power window relay is good,but the breaker for it can be heard popping and it is hot to the touch
looking for a common ground between these but can seem to find one
battery voltage is normal (could it have been jumped backwards?)

any advice would be great.
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Old 02-04-2013, 07:17 PM   #2
Cougar4
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Join Date: Jan 2004
Location: Anchorage, AK
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2001 LL Bean Outback
Winestone

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Get a test light probe and check the slits on top of each side of the fuses to see if power is getting to both sides of them. Check the fuses under the hood and in the dash.

There is a short to ground on the power supply for the power windows. Check the lead running to the main switch panel on the driver side door for a problem. It might be at the switch panel or possibly in the door jam.

The buzzing in the fuse panel is most likely from a relay inside the panel. Possibly due to a short on the output lead from the relay. Try pulling the relay out to identify the relay circuit with the problem.
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Old 02-04-2013, 09:31 PM   #3
justcarlos
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Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Mundelein, Il
Vehicle:
94 BMW 525i
Black

Default

checked both sides of the fuses on all and they are getting power.

the wiring for the master power switch is all good i am getting power to it there.

the thing about the buzzing is that it doesn't sound like just one relay, and the loudest it sounds like all of them in the underhood block going of for like 5 seconds at a time.
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Old 02-04-2013, 10:35 PM   #4
Cougar4
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2001 LL Bean Outback
Winestone

Default

You should be able to pull out the relays that are buzzing and determine which ones are having trouble. In order to fix the trouble we need to know what circuits are in trouble. If the relays are being activated while the ignition is OFF then something would appear to be wrong with the ignition switch possibly.
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Old 02-08-2013, 08:57 PM   #5
justcarlos
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Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Mundelein, Il
Vehicle:
94 BMW 525i
Black

Default

Update:

got a chance to work on the outback today, and as soon as i turned it on the battery light flashed as did the ABS light. checked the posts with the vehicle running and found 9-10 volts so i am replacing the alternator. question is has anyone experienced the alternator causing any of these issues as well as the ones i mentioned before?

oh and i got the shift solenoid in and it is working fine.
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Old 02-08-2013, 09:09 PM   #6
aerosaaber
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getting low voltage will mess with computers, so it was probably just throwing whatever codes it felt like.

fix the alternator issue, then you can see if the problems remain.

I know that when an old car of mine had an iffy ground on the ecu it ran like **** sometimes and popped codes, once the ground was ok it was fine. (I didn't hook up the ground strap well enough after swapping ecu's)
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Old 02-08-2013, 11:27 PM   #7
justcarlos
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Member#: 322917
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Mundelein, Il
Vehicle:
94 BMW 525i
Black

Default

yea going with the alternator for now, i just hope the bcu or pcm didnt get fried.

im still searching to see if i can find a common ground between them. found an electric diagram and noticed that "g3" ground appears to be the ground for the windows and lighting but cant find where its located at, if anyone knows that'd be great.
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Old 02-09-2013, 11:19 AM   #8
Cougar4
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2001 LL Bean Outback
Winestone

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Clean the battery connections along with the battery to chassis ground bond to the chassis. Cleaning any other engine grounds you find would also be a good thing to do just for good measure.
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