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 Post subject: Solved: SH Power Window fault - plug issue
PostPosted: Sat Jul 28, 2018 2:33 pm 
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I Say: Corners > Straights
Vehicle: 2010 XT Premium 5MT C6Z

Posts: 56
Location: Wauchope, NSW
Gday All,

Noticed today that the drivers side rear power window isn't working from either the switch at the drivers door or at the drivers side rear door.

I'm assuming this is likely to be an issue at the power window motor?

Anyone got any hints for troubleshooting it?

Cheers,

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Jeremy

2010 SH XT Premium 5MT C6Z

Instagram - Hardy.Photographika


Last edited by JeremyHardy on Fri Aug 10, 2018 10:39 pm, edited 1 time in total.

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 Post subject: Re: SH Power Window fault
PostPosted: Sat Jul 28, 2018 3:05 pm 
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Vehicle: MY11 S-Edition - SWP

Posts: 1090
Location: Sydney
Just guessing.... have you tried swapping the left and right rear door handle/controls as a way to eliminate a fault with the switch/circuit? I think there is only one screw holding them in.

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2011 S-Edition SWP


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 Post subject: Re: SH Power Window fault
PostPosted: Sun Jul 29, 2018 2:30 pm 
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I Say: Corners > Straights
Vehicle: 2010 XT Premium 5MT C6Z

Posts: 56
Location: Wauchope, NSW
jonp wrote:
Just guessing.... have you tried swapping the left and right rear door handle/controls as a way to eliminate a fault with the switch/circuit? I think there is only one screw holding them in.


Cheers, I'll give that a whirl ;]

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Jeremy

2010 SH XT Premium 5MT C6Z

Instagram - Hardy.Photographika


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 Post subject: Re: SH Power Window fault
PostPosted: Thu Aug 09, 2018 10:04 pm 
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I Say: Corners > Straights
Vehicle: 2010 XT Premium 5MT C6Z

Posts: 56
Location: Wauchope, NSW
Still haven't had a chance to actually go pulling the car apart yet to look into what's going on.

However, figured I should start with a wiring diagram.

Thanks to this thread: viewtopic.php?f=154&t=55541

I found this link: http://jdmfsm.info/Auto/Japan/Subaru/

Then navigated through to the 2009 Forester.

Took me to a menu page, clicked wiring diagrams, then P for power windows. http://jdmfsm.info/Auto/Japan/Subaru/Fo ... er%202009/

This netted the following diagrams (one for each door):
FRONT RIGHT DRIVERS DOOR: http://jdmfsm.info/Auto/Japan/Subaru/Fo ... 23275e.pdf
FRONT LEFT DOOR: http://jdmfsm.info/Auto/Japan/Subaru/Fo ... 22904e.pdf
BACK LEFT DOOR: http://jdmfsm.info/Auto/Japan/Subaru/Fo ... 23276e.pdf
BACK RIGHT DOOR: http://jdmfsm.info/Auto/Japan/Subaru/Fo ... 23277e.pdf

Looking at the diagrams, it seems the power feeds through the main door switches, then to the local door switch, then to the motor. But, there is also a local feed at the local switch.

So, if the front switch fails, you can't control the window from there. However, you should be still able to contro lthe window from the local switch.

Conveniently, the motor is a simple two wire device. Power it up one way, it goes up. Power it the other way, it goes down.

So, given two of the components are in the rear door, I think I'll start there.

First move will be to check and see if there is 12v power getting to the motor if a switch is operated.

If there is power, but no motoring, then the motor is faulty. If no power, one of the switches is faulty.

EDIT: Revised links to appropriate 2009 Forester diagrams.

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Jeremy

2010 SH XT Premium 5MT C6Z

Instagram - Hardy.Photographika


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 Post subject: Re: SH Power Window fault
PostPosted: Fri Aug 10, 2018 10:38 pm 
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I Say: Corners > Straights
Vehicle: 2010 XT Premium 5MT C6Z

Posts: 56
Location: Wauchope, NSW
Success!

Had a hunt through the forum and found a link to a door trim removal video for a 2008-2012 WRX. Video is for a front door, but the concept is very similar for the rear door.

Door trim video: https://www.youtube.com/watch?v=ObWstR_Ef_M

Once the trim was off, I removed the speaker in the door and shoved my arm up the hole and unplugged the wiring harness from the window motor. Bit of a wiggle and it came free.

Had to cut a slit in the door dust shield plastic to get the plug out for testing.

Probed it and switched the back switch both directions. This resulted in 12V and -12V at the door depending on which position I moved the switch.

This proves the rear door switch is good.

Rounded up the wife and got her to check the front door switch for me. This time I was struggling to get the probes into the motor plug well enough to make contact.

Have a close look at the plug:

Image

See how the white bit in the middle isn't sitting quite square?

Flicked the white bit with a little flat blade screwdriver and it pretty much fell off.

Once it was off ,there's a rubber o-ring underneath that wasn't seated properly. Reseated the o-ring, and reseated the white cover.

Now that the cover is back in place, reprobed and retested the plug while Bec operated the front switch. 12V and -12V. So the front switch is all good.

At this point, I'm thinking we have two options left.

1. The motor is stuffed.
2. The plug not being assembled correctly has caused a poor connection.

Reseated the plug on the motor - had to press fairly hard to make it CLICK into position - and then tested both door switches.

All working now.

Reassembled door, retested one final time, still working.

Happy for a cheap and quick fix.

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Jeremy

2010 SH XT Premium 5MT C6Z

Instagram - Hardy.Photographika


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 Post subject: Re: Solved: SH Power Window fault - plug issue
PostPosted: Tue Aug 14, 2018 1:57 am 
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Vehicle: MY09 SH XT - Grey

Posts: 10
Location: VIC
Glad to hear you got it fixed without spending a cent! Thankyou for posting the troubleshooting process you went through and in such detail


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