XM MK2 lexia Comms issue....

This is the Forum for all your Citroen Technical Questions, Problems or Advice.
jaisunny
Posts: 2
Joined: 27 Oct 2016, 12:33

XM MK2 lexia Comms issue....

Unread post by jaisunny »

Got a 98 xm that has the 30pin connector.
I've got some Comms issues, it only detects abs and suspension in lexia.

Any ideas what could be the issue?
User avatar
xantia_v6
Forum Admin Team
Posts: 10720
Joined: 09 Nov 2005, 22:03
x 1342

Re: XM MK2 lexia Comms issue....

Unread post by xantia_v6 »

I assume that you have a Chinese clone Lexia 3 and a 16 to 30 pin adapter. Those adapters are often wired wrongly and won't talk to all the ECUs.

See viewtopic.php?t=49045 for more information.
jaisunny
Posts: 2
Joined: 27 Oct 2016, 12:33

Re: XM MK2 lexia Comms issue....

Unread post by jaisunny »

Correct,

Even if 2 or 3 ecus are picked up? It can still be rewired wrong?
User avatar
xantia_v6
Forum Admin Team
Posts: 10720
Joined: 09 Nov 2005, 22:03
x 1342

Re: XM MK2 lexia Comms issue....

Unread post by xantia_v6 »

On the XM and Xantia with 30 pin diagnostic connector, each ECU is connected to a different pin on the 30 pin connector and the Lexia switches between them, so you can lose some ECUs while other work correctly.
It is also possible that the Lexia adapter is partially faulty. Ideally you would find someone with a working 30 pin setup so that you could narrow down the problem. Which region are you in?