Xantia 1.9TD Relay or ECU

agbacon · Unread post by **agbacon** » 19 Jan 2004, 20:50

Having a problem starting my Xantia. RAC said no power to glow plugs, possible relay or computer management (ECU). Taken to Citroen who found no problem (checked every day for 5 days !!)
Happen again 6 weeks later, but this time disconnected battery (to reboot computer, or free stuck relay) and reconnected, started fine.
Does anyone know if this is this a computer fault or just a stuck relay, and if so which one (part number would be great)
Thanks

uhn113x · Unread post by **uhn113x** » 19 Jan 2004, 21:58

Hello (?)
You need to catch it with the fault there, and stick a meter on the feed to the relay. Cheaper than paying someone to keep starting your car, followed by them replacing expensive lumps to diagnose the fault! If you are in UK, meters are very cheap - no-one should be without one
Mike

agbacon · Unread post by **agbacon** » 21 Jan 2004, 14:01

Thanks for the advice. Since disconnecting the battery everything is working, so will have to wait until it sticks again. Ideally I would just prefer to swap out the faulty relay, but as a novice, I have no idea which one it is
Thanks again
Anthony

vanny · Unread post by **vanny** » 21 Jan 2004, 19:15

As best i know there is NO ecu on any PSA 1.9TD (although there is the electronic imoboliser on some).
The relay is a black box (usually has BOSCH written on it) screwed into the inside of the passenger side wing (near all the wiring and fuses)

Kowalski · Unread post by **Kowalski** » 21 Jan 2004, 21:54

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by vanny</i>

As best i know there is NO ecu on any PSA 1.9TD (although there is the electronic imoboliser on some).
The relay is a black box (usually has BOSCH written on it) screwed into the inside of the passenger side wing (near all the wiring and fuses)
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
My 97 Xantia 1.9TD has an ECU that my 95 Xantia 1.9TD doesn't have, it was introduced in or around 1996 and controls the injection advance and not much else.

davey · Unread post by **davey** » 22 Jan 2004, 00:02

had 2 xantias in the past old & new shape, both gave probs with glowplugs at one time or another. both times I traced fault to glowplug controller (little black box mounted to wing forward of batt) - in both cases the power connections on the bottom were heavily correded and in one the corrosion was inside over the circuit board. Stripping them down & cleaning solved the prob.
citroen electrics always seem to be a corrosion magnet!!