1992 Legacy Sun Roof control box relay issue

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Olduser1
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1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

My 1992 Legacy Turbo has a factory electric sun roof, the SR switch operates fine, the wiring to the switch promotes a click from the control box next to the motor, the motor runs off the vehicle. When I stripped the control box to clean relay contacts the result was a louder click but still no roof movement.
The relays are OMRON G8H-1C7P 12vdc, part 0851DO these are on a pcb not plug in.
My question is do I hunt down a couple of these relays or their equivalent or attempt to install a later control box and or motor?
Anyone tried this option?
I'm in UK where the numbers of Gen1 S2 with Sr are few on the road these days.
Photos below show sun roof control box ,relay, motor etc

Image

Image
Legacy777
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Legacy777 »

If you have the skills for soldering and you can find the relays that would be the best approach. I'm not sure how trying to find a newer control box and motor would work out. The control box and wiring would be my concern and how you would be able to get it to work without adding or modifying the current wiring.
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

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Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Good advice, the manufacturer OMRON sell relays in boxes of 600 but they are the modern spade connection, I'm searching for an equivalent relay that can do the job and fit onto the board. I'll let the forum know how I get on.
Legacy777
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Legacy777 »

Yeah, keep us posted.

Another option you may consider is seeing if someone in the US or Canada would sell and ship you a control box. You could either try using it as is or just snag the relays.

You may want to post something in the parts shed and see if you get any bites.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Thanks for the suggestion, hope my Wanted request has a response , bearing in mind I'm in UK but have a relative staying in Boston MA delivery address for the next few days
Legacy777
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Legacy777 »

I travel to the UK fairly regularly, so if shipping becomes an issue I can work with you to get something figured out.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Josh, Thanks for your most helpful offer, I'll be in touch. The UK supplier has just come back with even the spade relays are no longer available - which seems odd.
Legacy777
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Legacy777 »

I posted some Facebook subie group links in your WTB post. I'd suggest checking those out as well.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Update, yesterday whilst at a motor race circuit another Subaru enthusiast looked at my Legacy sunroof and immediately diagnosed the likely problem as rust in the sunroof tracks - he reckoned the effort to turn the sunroof with the emergency handle was too great and should be 1 finger pressure.
My sunroof has always been slow and when using the handle quiet stiff to turn, do I need to remove the whole unit to access the track that runs inside the tubing?
Or can I find an access point other than where the motor locates into the track to pump in freeing fluid.
Anyone undertaken this task?
Please see photo of the metal tubing containing the track below

Image

Spent 3 hrs this am removing the sr motor spraying silicone onto the 30mm of cable then refitting , repeating actions every 30mm , net result slightly smoother action when wound on handle but just clicking of relays when sr switch operated . Too old/ tired to continue today.
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Update went thru the process on the wanted reply .
Added the two bridges to the pcb board as per the link provided.
Plenty of relay clicks but no sign of sun roof moving open close etc.
Now its back to the emergency handle operation.
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Hi I now understand the same blue control box was fitted to the IZSU Longhorn wagon , anyone on this forum seen one for parts?
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Yes its an ISUZU
mike-tracy
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Re: 1992 Legacy Sun Roof control box relay issue

Post by mike-tracy »

We never got those in the states that I know of.

My latest turbo legacy did the same thing as yours, I heard a click but nothing happened. There is some kind of logic that won't allow the motor to operate if the resistance encountered is above a set percentage. Like a primitive limit switch.

What worked for me is I cranked open and close the sunroof manually several times, adding a little lubricant (I used waterproof axle grease) each pass. When it became easy to open by hand, the sunroof controls worked again.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote: Mon Jan 14, 2002 10:23 am Wait....I'm confused now.
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

Glad to learn mike-tracy you were successful with your sun roof, I've had the whole unit out twice now - 1st time to redo the seal then to attempt a repair.
I'm back to the emergency handle.
I think the ISUZU was marketed as Longhorn in some markets
Olduser1
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Re: 1992 Legacy Sun Roof control box relay issue

Post by Olduser1 »

I'm working on the Legacy again, still require the sunroof switch - up down back forth for my 1992 Legacy Turbo.plus the blue control box that sits behind the driver in the roof on RHD car. I'll get the correct photos sorted later today. And put my wants on correct parts shed.
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