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XJ6 & XJ12 Series I, II & III 1968-1992

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  #1  
Old 03-19-2010, 11:04 PM
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Default power window relay/fuse 85 xj6 help

All my windows will not go up or down anymore. Is there a fuse that controls the windows,if so where is it. From what I've read there is a relay. can anybody tell me where it is and how to test it. I think I found it,but not sure. the one I found is black, round and has the numbers 87,86,85 and 30/51 and lucus uk on it. also I read about a master window switch, I don't think there is one in my vehicle, if there is how do I know if it is good
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Old 03-20-2010, 07:32 AM
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Assuming you have a left hand drive car the window relay is at the extreme right side of the dashboard, outboard of the glovebox. It has brown, white/pink, black/pink, and red/slate wires. The numbers you mentioned are standard terminal designations and don't identify what the relay is used for.

With a test light or volt meter you can male some simple checks:

The brown wire should have 12v at all times.
The red/slate should have 12v with the key "on"
The white/pink should have 12v with the key "on"
The black/pink should be ground at all times *unless* the master switch is flipped.


Output from the relay branches off to two circuit breakers. Since all of your windows are inop it isn't likely to be a circuit breaker

The master switch is between the regular window switches and works by grounding or un-grounding the relay

Post back if you need more help

Cheers
DD
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Old 03-12-2014, 11:47 PM
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Hi Doug, I am facing the same windows problem where both aren't operating. I have cleaned the switches, checked the thermal breakers. I have removed the relay but couldn't tell if its faulty. The wires going into the relay are: white/pink, red/brown, black and brown. Can you please advise which wire goes to which terminal of the relay (85, 86, 87, 30/51).

Thanks,
Gilbert
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Old 03-13-2014, 09:07 AM
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Your wires colors don't agree. Are you sure you have your hands on the correct relay?

30/51 solid brown wire (constant 12v)
87 red/slate (outout to thermal breakers)
86 black/pink (ground)
85 white/pink ('key on' 12v)



If ALL the windows and sunroof are inoperative a good place to start is the lock-out switch. Has it been flipped?

Cheers
DD
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Old 03-13-2014, 10:49 AM
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Hi Doug, problem solved! It was the relay... What an annoying place to change it. I used another relay from the engine bay (guess horn relay) and now windows are working!

My car is actually an XJ-SC and not a convertible.

Thanks a lot for your help!

Cheers,
Gilbert
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Old 05-13-2014, 07:16 AM
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Thanks so much!! Mine was just a loose wire from the relay. For months my windows worked once in a while but they never got stuck in the open position. Until yesterday eve and I live in Harlem, not to relaxed with leaving my windows open there for a night. So after some digging on a McDonalds car park where I stept onto a bag a sweet honey sauce with my bear feet I got it.

Thanks a bunch forum folkes!!
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Old 06-03-2014, 08:02 PM
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What and where is the lockout switch? Is it the same as the master switch, and what do you mean by saying flipped? I have no experience in electrical issues. Thanks!
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Old 06-03-2014, 09:49 PM
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It's one of the two switches between the regular window switches, the other being the sunroof switch.

It disables the power window circuit

Cheers
DD
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Old 06-03-2014, 10:50 PM
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Quote:
Originally Posted by Doug View Post
It's one of the two switches between the regular window switches, the other being the sunroof switch.

It disables the power window circuit

Cheers
DD
Thanks for you prompt response!

I am having the same problem as everyone else above. All windows and the sunroof do not operate. I read the thread here and ordered a new relay. While I am waiting for it I want to make sure that the master switch is operable (can it go bad?).

Are the brown and black/pink cables connected to the master switch suppose to have any current?

And , since I took them out and flipped them which gave me no results, I don't know what cable goes under what number on the master switch?
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Old 06-03-2014, 11:01 PM
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The master switch (or lockout switch) doesn't carry "+" voltage. It just opens/closes the ground circuit to the relay. It should have just two terminals and since it's a simple open/close switch it doesn't matter which way the wires are hooked up.

It should have a black.pink wire (from the relay) and a solid black wire (which eventually goes to a ground point). It shouldn't have a brown wire. A solid brown wire on your Jag will always be constant 12v "+".

Cheers
DD
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Old 06-04-2014, 07:22 PM
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Quote:
Originally Posted by Doug View Post
The master switch (or lockout switch) doesn't carry "+" voltage. It just opens/closes the ground circuit to the relay. It should have just two terminals and since it's a simple open/close switch it doesn't matter which way the wires are hooked up.

It should have a black.pink wire (from the relay) and a solid black wire (which eventually goes to a ground point). It shouldn't have a brown wire. A solid brown wire on your Jag will always be constant 12v "+".

Cheers
DD
Got it! The master switch is not flipped, and I checked the voltages.

Brown has around 13 all the time
White/pink has around 13 when key is on.
Black/ pink ground works.

But the double red/slate has no voltages key on/off. I also checked all four red/slates under the glove compartment going in and out of the (I guess 2 circuit breakers?).

The relays part connecting to red/slate, numbered 87, was also different color than the rest 86,85 etc., sort of like oxidized.

Any suggestions, I'm getting better at this with my new voltage meter lol.
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Old 06-04-2014, 07:34 PM
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I'd say the relay is dead !

Good work!

Cheers
DD
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Old 06-04-2014, 08:04 PM
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Quote:
Originally Posted by Doug View Post
I'd say the relay is dead !

Good work!

Cheers
DD
Wow done! Just closed my windows!

Thanks Doug. I would pay you for consultation and offer you beer if you came by. I feel like I will be working on this car alot.
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Old 06-04-2014, 08:04 PM
 
 
 
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86, back, breaker, circuit, fuse, jaguar, left, location, power, relay, thermal, window, wont, xj6, xjs



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