Xantia ABS light???

[numnuts]

Hi guys. After finally managing to change my front discs and pads recently (W reg Xantia 2Litre HDI) The ABS light has been on.I believe it could be an issue with the sensors but not sure where they are. I couldnt find them to disconnect when changing the pads and discs so just carried on without any problems. The abs had been on intermittently before the brake change. Look forward to any advice. Thanks

[VertVega]

I would recommend you to read this thread in Handy Hints & Tips ---> Xantia Rear ABS Sensor Renewal

[citroenxm]

But front sensors are SOOOO SIMPLE to remove.

They are located on the back of the Hub, just above where the track rod end from the steering rack attaches to the hub. Have a look behind the disk . Plastic thing with a cable comming from it. The plug hides on the chassis, behind the strut.

Front sensors are attached with a 10mm bolt, but the orface they sit in is more os a C house, so the sensors come out easyilly.

You shouldn't need to remove a sensor to change disks really. they dont get that much in the way.

[Old-Guy]

Had similar problems with both of our Xants. Fault codes said O/S/F sensor faulty several times on deceased blue estate, I didn't believe it as sensor had been changed (a bodge) for MoT by selling garage. On the green estate, had intermittent ABS light for some months - would behave perfectly for weeks then have a couple of days coming on at random. Fault finally went hard, by which time I'd sorted the blue estate so knew where to look - software often tells lies, particularly when the designer has no practical experience or the programmer is too lazy to code for all possible eventualities (or both).

The diagnostic text for sensor fault codes should always include the word CIRCUIT. Replacing sensors is much more expensive than cleaning grotty contacts.

The villain in both cases was the connector plug/socket at the ABS ECU - the cable goes through a sharp right angle beside the plug putting pressure on the joint. Because it's close to the bonnet close, it gets salt spray in winter. Solution is to unplug, clean up both plug and socket contacts (search the forum and you'll find a thread with the contact layout), spray with WD40 and reseat plug very carefully making sure that the water seal is seated properly. Warming the stiff old cables with a hot air gun (careful!) or hair dryer will help them mould to the required bend.