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C6 Headlamp washers. |
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Grumpytvr
 
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   Member No: #742
Location: Wiltshire |
I've started a new thread on this as I'm still having problems with my head lamp washers, i.e they still don't work! The original post is here: - Click Here - The story to date, perhaps a cautionary tale for others: When replacing a tyre pressure monitor and reprogramming using lexia I ran a diagnostics scan to discover numerous faults, one of which was a headlamp washer fault F998. I checked the fuse (F4) in the engine bay fuse box to discover it had blown. I replaced it and still no luck. Note: I always make sure the head lights are on on when checking whether the washers worked. I wired the headlight washer pump directly to a spare battery and the headlight washers work without any problems. The pump operates and pushes out the washers, so the mechanisms and pump are working fine. I have checked the output to the pump from the plug connector and when the washer stalk is operated nothing happens (in truth it reads a constant 12 volts, although clearly not enough to operate the pump). I tested the windscreen washer connector and this reads 0v under normal circumstances and 12v when the windscreen washer stalk is operated (this is what I'd also expect the headlight washer to do). My original guess was at some point before my ownership of the car (I'm the 3rd owner) someone had operated the headlamp washers when frozen (probably because they didn't use the correct mix of screen wash), not only blowing the fuse but damaging the relay (R11) in the fuse box I've managed to find a replacement under-bonnet fusebox unit but still no luck! I've also used the wiring diagrams available to trace the wire from the pump back to the engine fuse box and there is continuity so no problems there either. Just wondered if anyone had a key for the wiring diagrams and any wiring diagrams showing connections between the BSI unit and the under bonnet fuse box. - Or alternatively whether anyone knows how to check whether the fuse box under the bonnet is receiving a signal from the BSI unit (or wherever the signal for headlamp washers comes from)to operate the head lamp washer relay. I have tried operating the head lamp washers using the function in Lexia and that doesn't work either! I hate to say it, but I might have to book it into a Citroen specialist to solve as I'm running out of time! The MOT is due in 6 weeks and non functioning headlamp washers is a failure. I hope it's not a problem with the BSI unit, that's likely to be expensive. If all else fails, I'll install a switch on the dashboard to operate the washers manually, but it would be nice to have the washers operating as manufactured. The moral of the story is if you're buying a C6 check that the headlamp washers work and ALWAYS USE THE CORRECT MIX OF SCREEN WASH!!! Any further assistance / guidance / wiring details in trying to solve this would be very much appreciated. I'm pulling my hair out!! |
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C6Dave
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   Member No: #1
Location: Northumberland |
Wiring Diagrams are difficult to source I'm afraid and what we have so far are here: - Click Here - | ||
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Grumpytvr
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Member No: #742
Location: Wiltshire |
Thanks Dave, those are the ones I've been using and they've been really helpful. They've got me so far but can't find quite enough information. |
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Trainman
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 Member No: #86
Location: Penwortham |
I know this may sound daft.........but....... have you tried them where the car is moving? I had a similar issue on a C5 facelift and could only get them to work once the car was doing over 20mph. Just a thought |
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BruceB
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  Member No: #234
Location: Hampshire |
Swerving away from the topic, I thought of you (although I didn't know it was you!) yesterday. I recalled that there was TVR owner on the forum when I saw (NE Hants) a black Range Rover with the registration H15 TVR. | ||
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ChrisHunter
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 Member No: #188
Location: Lancashire |
just a thought, but is the actuator jammed, for some reason - misalignment, corrosion, grime, whatever ? | ||
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Grumpytvr
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Member No: #742
Location: Wiltshire |
Trainman wrote ... I know this may sound daft.........but....... have you tried them where the car is moving? I had a similar issue on a C5 facelift and could only get them to work once the car was doing over 20mph. Just a thought Thanks for this, they don't work if the car is moving or stationary with the lights on. There are some bemused residents over in Wiltshire, they've been observing a man in a silver Citroen C6 stopping frequently to touch his headlights! I'm fairly sure that the fault is a control fault given that's what Lexia is telling me and the checks I've done to date seem to agree with that. Think I'll need to peruse the "bay of dreams" to see if I can find a more detailed manual and wiring diagram. There seem to be numerous ones available although I don't know how good they are. Worth a punt for a fiver or so, has any one else bought one? ChrisHunter wrote ... just a thought, but is the actuator jammed, for some reason - misalignment, corrosion, grime, whatever ? I don't think so, connecting the pump directly to a battery operates everything fine. BruceB wrote ... Swerving away from the topic, I thought of you (although I didn't know it was you!) yesterday. I recalled that there was TVR owner on the forum when I saw (NE Hants) a black Range Rover with the registration H15 TVR. I am a TVR owner for my sins, nice of you to think of it / me! I've been out in it today, talk about 2 opposite ends of the motoring spectrum! On the plus side it doesn't have headlamp washers that don't work, on the down side I had to start it with jump leads as the battery was flat. Note to self: use more often, then battery won't go flat. Do you think the Range Rover driver has a TVR with a Range Rover related plate to make up for this apparent sacrilege? Something like R4 NGE?!?  , or perhaps he's got a TVR engine fitted in his Rangie - which is entirely possible as TVR used a modified Rover V8 in their cars for quite a while. |
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pclark
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Member No: #3
Location: North Yorkshire |
One suggestion. Is the washer fluid tank full? I remember from my C6 that when the fluid fell to a certain level the headlamp washers would stop working, presumably to prioritise the remaining fluid for windscreen washing. | ||
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Grumpytvr
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Member No: #742
Location: Wiltshire |
Fluid tank brimmed, makes no difference. In addition I tried the windscreen washers this morning on the way to work and they didn't work either! I have a sneaking suspicion I may have forgotten to plug the pump back in when I tested it over the weekend. At least I hope that's what it is.......trouble is I'll have to take the wheelarch liner off to find out. I've ordered one of these - Click Here - in the hope that it will have a more wiring information. Finding the time to sort these things out is turning into a problem. I might have to bite the bullet and book it in to a local specialist to investigate further. Disappointing, because I normally manage to sort this type of thing out. |
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C6Dave
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Member No: #1
Location: Northumberland |
Hope you have a PC running Win XP or it won't work plus the 'crack' software may want to install a trojan........... | ||
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Grumpytvr
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Member No: #742
Location: Wiltshire |
Yes, old Laptop with Win XP, software all installed and operating correctly as far as I can tell. I can read and erase faults. Your advice some time back regarding the quality of the reader kits was spot on. The first one I bought was dreadful and didn't work, this one has been very good as far as I can tell. I have investigated the windscreen washer issue this evening. It would appear that fiddling around under there has caused me more problems, it's all plugged in so should operate but doesn't. I hate to admit defeat but I'm not going to have the time to spare over the coming weekends to investigate further. I have to weigh up the cost of repair against value of my free time etc. - i.e. I'll be calling the specialist in the morning to get the car booked in, frustrating but a necessary evil unfortunately! As the only parts I've replaced on the car so far have been brake pads, discs and tyres I can't really moan that my garage bills have been excessively high. I'll leave that until it's fixed! Thanks all for help, when I find out what the problem is diagnosed as I'll post an update. |
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Grumpytvr
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Member No: #742
Location: Wiltshire |
C6Dave wrote ... Hope you have a PC running Win XP or it won't work plus the 'crack' software may want to install a trojan........... Sorry , I read this again, are you referring to Lexia or the manual I mentioned earlier? I thought you were talking about Lexia. Guessing installing the manual will be a similar exercise going by your description. Re: headlamp and screen washers: I Phoned AP Autocare in Bristol, who are Citroen specialists. The car is booked in for Monday. I may have another look at it over the weekend, otherwise hopefully next week it will be fixed. My guess is it will be expensive... On a separate note and last ditch attempt to fix myself, I've read that it is possible to reset BSI unit and that this may solve some wiper / washer problems. Has anyone ever reset their BSI unit? I'm assuming that it's possible via Lexia but I don't know how. There also appears to be a method where the battery is disconnected, reconnected and then a procedure of turning on lights operating the key fob (and probably doing a little dance)for a number of seconds will reset the BSI. I must admit that I wasn't keen on this method as I seem to remember that disconnecting the battery wasn't wise (Can't remember why). Does anyone have any experience of either of these methods? |
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gmerry
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 Member No: #21
Location: Scotland |
Disconnecting the battery is very straightfoward. After reconnecting, display date/time reset and window anti-pinching are the only things to worry about. Worth a try Regards G |
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travlician
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 Member No: #350
Location: Paradera |
Most important: Don't close the trunk after battery is disconnected! | ||
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Grumpytvr
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Member No: #742
Location: Wiltshire |
Thanks for all your help guys! Looks like I've got a few hours on Saturday to spare so armed with more wiring diagrams (thanks Phil) and your advice I'll give it one last go. If I can't fix it, my inner engineer needs to know how it works at least! | ||
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