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Topic: Heated front & rear screens (Read 582 times) |
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Heated front & rear screens
« on: Oct 29th, 2008, 1:21am » |
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It seems that the cold weather has revealed another slight problem with the wifes 2.3 Ultima estate....no heated front or rear screens 
Have checked F20 & R4/R5 (replaced with known working ones) in the central fusebox & in the battery fusebox have checked F38/F41 & also replaced R18 with a known working relay, but still no joy 
Everything else electrical works fine & I find it rather difficult to believe that both front & rear screen elements are completely kaput 
Usually at least part of the element works
Is there another fuse or relay that I've missed that is exclusively for both heated screens ?
Any suggestions would be very much appreciated 
P.S...I haven't checked whether there is a voltage going to the screen connections as my multimeter has bit the dust after 15 years of service.....it may be the time to buy a new one 
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Simmo
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I'm an OAP !
Posts: 5508
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Re: Heated front & rear screens
« Reply #1 on: Oct 29th, 2008, 7:29am » |
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Jon, could this be the actual switches ?. You appear to have checked out all the other possibilities. The front screen leads can be damaged when a screen is replaced or I suppose someone could 'economise' and not have a heated screen as a replacement but I would have thought the rear screen unlikely to suffer the same fate. Looks like it's time for an early Xmas present from Maplins!.
The details of the screen connecting points are shown HERE.
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: Heated front & rear screens
« Reply #2 on: Oct 29th, 2008, 8:42am » |
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Jonnycab.
What about a little bulb holder with two bits of wire as a temporary substitute for your meter ?
GOZZ.
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scorpio_man
Administrator
Ford Kuga awd
Posts: 5654
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Re: Heated front & rear screens
« Reply #3 on: Oct 29th, 2008, 9:00am » |
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hi jc
have you checked fuse 36? the screens are on a timer, so might go though the ccm.
also try the diagnostic check.
i'd always check all fuses as so many things are inter-connected on the scorpio.
hth
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heated front & rear screens
« Reply #4 on: Oct 30th, 2008, 2:38pm » |
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Problem solved, I think....won't really know until next time the screens freeze or badly mist-up.....
On removing the trim cover in the boot to check the rear screen connections it was obvious what the problem was..... the O/S connector had come away from the screen
I soldered the connector back on to the element & then checked the voltage with the multimeter (mutimeter only needed a new battery ) & had a healthy 14V, then checked the continuity of the screen element & that was fine
Regarding the front screen, the connections are fine, so checked continuity of element & that was fine, then checked voltage & again a good 14V 
So it appears that both front & rear heated screens are now working & I can only assume that the reason neither were working before was all down to rear screen connector that had come off
P.S....I can't get this diagnostic thing to work either on mine or the wifes Scorpio. I think I'm doing it right
Turn on ign, press & hold heated rear screen button for 10 seconds, then while still holding button in, switch engine on, then release button & it should be in diagnostic mode.
After doing this then opening doors etc do not produce a beep
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: Heated front & rear screens
« Reply #5 on: Oct 30th, 2008, 2:50pm » |
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Make sure the buttons are in the right place Jonny, there seems to be a few of them have been swapped over in the past, I have one car with the front heated screen switch on the top and the other with it on the bottom
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heated front & rear screens
« Reply #6 on: Oct 30th, 2008, 2:51pm » |
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Stuart, buttons are in the right positions
You can tell which one is the heated rear screen as it can be switched on with just the ignition turned on, whereas to switch on the heated front screen the engine has to be running
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heated front & rear screens
« Reply #7 on: Oct 31st, 2008, 1:39am » |
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Finally got the diagnostic check to work, but not the way it describes it on the site.
The way I got it to work was.......press & hold in the heated rear screen switch, then turn on ignition, carry on holding switch in for approx 10 seconds, release it & 3 bongs are heard to tell you it's in diagnostic mode. There was no need to start the engine
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Scorpio
Full Member
Posts: 562
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Re: Heated front & rear screens
« Reply #8 on: Oct 31st, 2008, 1:48am » |
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Jon, what is the diagnostic check you mention!
Thanks
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: Heated front & rear screens
« Reply #9 on: Oct 31st, 2008, 2:04am » |
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It's a way of checking if the central control module that controls all the timed features like intermittent wipers, heated screens, interior lights etc is working correctly.
The idea is once it's in diagnostic mode then pressing a heated window switch or opening the door etc should produce a bong to indicate that the central control module (timer) is working correctly
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pete from Hull
Senior Member
Non Scorpio at the moment, but still interested...
Posts: 1365
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Re: Heated front & rear screens
« Reply #10 on: Oct 31st, 2008, 9:50am » |
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on Oct 31st, 2008, 2:04am, Jonnycab wrote:It's a way of checking if the central control module that controls all the timed features like intermittent wipers, heated screens, interior lights etc is working correctly.
The idea is once it's in diagnostic mode then pressing a heated window switch or opening the door etc should produce a bong to indicate that the central control module (timer) is working correctly |
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Cor Jon,
wish I hadn't sold my Scorp now, I didn't know about this little trinket.... I wonnanuther Scorp.... 
Pete
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Bring back fair wages.........
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