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Car Forum / Peugeot Cars / July 2007replacement IR roof sensor for 306 XSi
Hi all I have a '96 306 XSi. My plip remotes have had the dreaded 'battery rundown' fault ... however I *may* have fixed this (more details if I get the whole thing working). However in the meantime I suspect the IR sensor in the roof has died. I've had a leak from the sunroof which I've been negectful of. So when I try to re-program the Plip, nothing happens. I've had a look at the sensor in the roof and it's clearly suffered from water damage. I have an electronics background and will have a go at fixing it, but that's a long shot. So, a couple of things: - where to get a new roof sensor from - any idea what they are properly called? - Is this sensor linked to th Plip - ie. if I were to get a replacement roof sensor, would this work with my current Plips once re- programmed? Obviously I am also looking into fixing my sunroof leak... thanks jon N > Hi all > I have a '96 306 XSi. My plip remotes have had the dreaded [quoted text clipped - 21 lines] > thanks > jon N Jon. I cant help with your sensor problem, but I had a leaking sun roof, it turned out to be the drain holes were blocked, I cleared them with a wire coat hanger. Bryan > Jon. > I cant help with your sensor problem, but I had a leaking sun roof, it > turned out to be the drain holes were blocked, I cleared them with a wire > coat hanger. > > Bryan Hi Bryan Thanks for your message. i've been having a look for the drain holes after reading back old messages on this group. Can you advise where they are - I can't see them yet?! Thanks Jon >> Jon. >> I cant help with your sensor problem, but I had a leaking sun roof, it [quoted text clipped - 10 lines] > Thanks > Jon Hi Jon. They are in the corners at the front, if you can't see them I would think that they are full of muck and need to be scraped out. Bryan > Hi all > I have a '96 306 XSi. My plip remotes have had the dreaded [quoted text clipped - 18 lines] > > Obviously I am also looking into fixing my sunroof leak... I got hold of a spare plip key for my wife's 306 and that programmed ok. It's now gone the way of the other two though with dead batteries after a couple of weeks so if you do find the answer to that one I shall certainly be interested.  SignatureKeith Willcocks (If you can't laugh at life, it ain't worth living!) Hi Keith > I got hold of a spare plip key for my wife's 306 and that programmed ok. > It's now gone the way of the other two though with dead batteries after a > couple of weeks so if you do find the answer to that one I shall certainly > be interested. Thanks - actually that's a good point (about spare plips working) now that I think of it. I 'fixed' the plip by replacing the capacitor, which I'd heard might be faulty. It did look as though it might have been ... electrolytic capacitors can 'burst' and the ones on my plips do show some of the symptoms. I'll see how long the batteries last before posting full details ... and obviously I'd rather prove the whole system first... Regards Jon N > Hi Keith >> I got hold of a spare plip key for my wife's 306 and that programmed ok. [quoted text clipped - 11 lines] > symptoms. I'll see how long the batteries last before posting full > details ... and obviously I'd rather prove the whole system first... I shall wait with all fingers crossed. tyhis nmay asfffect mny typimng ;o) SignatureKeith Willcocks (If you can't laugh at life, it ain't worth living!) > I shall wait with all fingers crossed. tyhis nmay asfffect mny typimng > ;o) ;-) It also looks like the roof receiver is not tied to the Plip. For those of a technical bent ... the Receiver PCB in the roof only contains a set of Infra-red sensors, and an amplifier chip, together with a few other parts. The decoding part must be elsewhere (any clues anyone?). Cheers Jon N >> I shall wait with all fingers crossed. tyhis nmay asfffect mny typimng >> ;o) [quoted text clipped - 6 lines] > with a few other parts. The decoding part must be elsewhere (any clues > anyone?). ECU? The post from Brian looks interesting, yours might be fixed the same way. Keith > Hi all > I have a '96 306 XSi. My plip remotes have had the dreaded [quoted text clipped - 21 lines] > thanks > jon N I have had exactly the same problem with the receiver due to water through the sunroof. I took the receiver board out and cleaned all the corrosion fur off very carefully, particularly where it bridged any printed circuit conductors. I then sprayed it with electrolube to keep it water repellent, and in my case it then worked OK. Worth a try in yoyur case too i would think. Now to have a look at the plip, which is also running down batteries in no time. I checked the little switch inside, and it now never seems to be open circuit, there is always a resisance of 100 ohms or so, which is what I assume to be the cause of the batteries not lasting. Though whether it is the switch or the electrolytic I do not know. Hi Brian > I have had exactly the same problem with the receiver due to water through > the sunroof. > I took the receiver board out and cleaned all the corrosion fur off very > carefully, particularly where it bridged any printed circuit conductors. I > then sprayed it with electrolube to keep it water repellent, and in my case > it then worked OK. Worth a try in yoyur case too i would think. That's the sort of thing I am doing. There is actually one track which is damaged; I have repaired that without success. But I have also found the data sheet for the chip used, so I can probably work out what is & is not happening. Sometime being quite technical is a bit tedious... I will keep you informed... > Now to have a look at the plip, which is also running down batteries in no > time. > I checked the little switch inside, and it now never seems to be open > circuit, there is always a resisance of 100 ohms or so, which is what I > assume to be the cause of the batteries not lasting. Though whether it is > the switch or the electrolytic I do not know. >From memory, the last time I checked my plip properly the switch seemed to be acting fine. I've heard a few stories about the plip (apart from the 'They stop working' one): - there's a short on the PCB. Plausible but unlikely IMHO - some mechanical problem causing the batteries to be loose, or something. Not in my case - it's a capacitor ... plausible in my case ... ... although I wonder why in the case of both plips the batteries only started failing after I changed them. Maybe the slightly higher voltage of the fresh batteries did the capacitor in??? I've also wondered about a failure of the plip semiconductor over time ... but have no evidence of this. On the sunroof front, I've found the drains and shoved a couple of feet of wire down them to clean them. Any idea where they come out, I can't tell if I've done this properly? Cheers Jon N >Hi Brian > [quoted text clipped - 40 lines] > Cheers > Jon N They come out at the bottom of the A pillar. Just run some water gently down the tubes. Hi Nigel [...] > They come out at the bottom of the A pillar. Just run some water > gently down the tubes. Thanks ... I was being a bit idel to write before checking ... I've done this & all looks good ;-) J >>From memory, the last time I checked my plip properly the switch > seemed to be acting fine. I've heard a few stories about the plip [quoted text clipped - 8 lines] > started failing after I changed them. Maybe the slightly higher > voltage of the fresh batteries did the capacitor in??? This may be completely unrelated, but as you mentioned capacitors bursting it may be interesting reading:- http://en.wikipedia.org/wiki/Capacitor_plague Matt Hi Matt [...] > This may be completely unrelated, but as you mentioned capacitors > bursting it may be interesting reading:-http://en.wikipedia.org/wiki/Capacitor_plague > > Matt Thanks - I know about this (I'm an electronics engineer in another life) and it may well be related. I've mended PC motherboards by replacing capacitors like this in the past. I wasn't expecting this on the plip because (a) the timescale is different - mid-90's rather than early 2000's, and (b) the bulge on the capacitors I've seen is quite slight, much less than eg. the pictures in the wikipedia article. I will post a picture of the caps when I get chance, and if I show that this fixes the problem. Notwithstanding my IR receiver problem, with the replacement cap. my plip *seems* to have been working (ie. the red LED flashes on when I press the button) for several days now, which is more than used to be the case. HTH jon
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