2006 C5 Ldws

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

2006 C5 Ldws

Post by citroenxm »

But if an off chance. And long shot..

Aside my 2004 dead estate.. I've a 2006 c5 exclusive hdi.. With lane departure warning system.

It has a fault. When I put lexia on it the seat vibrators worked on both sides.. And the error was a short circuit. I've check power to it.. Cant seem to see one. I see the. Cameras are all wired together it need to check each one individually does anyone know what resistance they should be if any at all..? Lexia checked the cameras but wanted to test it useing a white. Board but I couldn't manage that.

Don't advise me to ignore it and disable it.. Its fitted and I would like it to work..

Any advise greatly appriciated..
User avatar
GiveMeABreak
Forum Admin Team
Posts: 25983
Joined: 15 Sep 2015, 19:38
x 2961

Re: 2006 C5 Ldws

Post by GiveMeABreak »

These aren't cameras Paul, they're Infra Red sensors.

You don't need a whiteboard to calibrate them, a sheet of white A4 will do - but I wouldn't bother with this as it is unlikely to do anything to fix the fault which is electrical and probably from the harness to the ECU.

The lenses can be cleaned with normal soapy water, but care must be taken not to scratch the lenses.

I will try and get you a diagram up of the system in a second.
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

Marc. I've got the diagram.

From you in Pm..
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

Screenshot_20210720-173237.png
User avatar
GiveMeABreak
Forum Admin Team
Posts: 25983
Joined: 15 Sep 2015, 19:38
x 2961

Re: 2006 C5 Ldws

Post by GiveMeABreak »

Ah, ok, so the ECU is located behind the BSI mounting.

What message are you getting on the multi-Function Display? If there is a fault, it will display a message here - if you miss it, each time you press the LDWS button the message will repeat, so you can see what it says.

What is the fault code you are getting with Diagbox?
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

It just says .. Anti wander system faulty.

Lexia reported a short circuit. It I'm gonna connect lexia up again and check it all over till I get another ecu for the other 2004 car..
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

Also it tells me the fault without the dash button being pressed.. So it reports the fault instantly.
wheeler
Posts: 5265
Joined: 21 Sep 2002, 19:07
x 316

Re: 2006 C5 Ldws

Post by wheeler »

I have no idea if you can do a resistance check on the sensors or not but is unlikely all 6 will be faulty so you could take all of them of & compare them?
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

I'll just try get under and unplug each one and do a continuity check on them.. But Im sure when I looked with lexia it didn't report any sensor fault. Just a short circuit..

I'll put lexia on tomorrow and remind myself and get some codes..
User avatar
GiveMeABreak
Forum Admin Team
Posts: 25983
Joined: 15 Sep 2015, 19:38
x 2961

Re: 2006 C5 Ldws

Post by GiveMeABreak »

Be aware that these are numbered in order and if removing them each sensor MUST be put back in the right location or the whole system will need re-programming...
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

I won't remove them. I'll just unplug in thier fitted location and check...

Marc.. Your thoughts on my other headache on the 2004 estate non running issues would be greatly recived too..
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

Here are sequence of shots of the lexia report. Interestingly sensor 1 has now developed a fault..
DSC_0083.JPG
DSC_0084.JPG
DSC_0085.JPG
Interestingly the fault last time was a short circuit. But this time its different..
User avatar
GiveMeABreak
Forum Admin Team
Posts: 25983
Joined: 15 Sep 2015, 19:38
x 2961

Re: 2006 C5 Ldws

Post by GiveMeABreak »

So there's the likely culprit I think. There are no codes I have for the LDWS - so if you are keen on replacing it, you'll need to carry out the programming procedure on all the sensors Paul.
citroenxm
Posts: 7995
Joined: 31 Dec 2004, 00:10
x 49

Re: 2006 C5 Ldws

Post by citroenxm »

I'll try it next week when the weather is cooler. I don't have that much energy in this hot weather.

But I'd not think unprogramed sensors would cause a communication fault.
User avatar
GiveMeABreak
Forum Admin Team
Posts: 25983
Joined: 15 Sep 2015, 19:38
x 2961

Re: 2006 C5 Ldws

Post by GiveMeABreak »

No, but the system won’t operate unless all the sensors are operational and programmed for safety reasons.