xantia immobiliser problems

mrjazon · Post by **mrjazon** » 24 Jan 2005, 20:08

hi guys ive got a n reg xantia the problem being it wont start both red and green lights are on with key in the ignition,ive tried everything checked fuses plugs left and right side headlamp loom plugs all ok but i can not get the light to go just red so i can enter the code ive taken both ecu and key pad to another xantia and tried them in an identical car and heypresto it lets me put my code in and starts is there any way i could unlock the ecu in the dona car and then put in back in my car and do away with the immobiliser side of things i tried it put the code in the on the dona car then unplugged the keypad took out the ecu put it back in my car and nothing would not start plugged my key pad back in and the dredded red and green lights were still on,do i have to keep power to the ecu after i diconnect it from the dona car if so how?or is there another way to do it im stumped please help thanks
ive just spent another day messing about and still no luck[:(!]

paranoid · Post by **paranoid** » 24 Jan 2005, 22:59

Mail me and I may be able to help, Was given advice by someone else on this forum.

PowerLee · Post by **PowerLee** » 24 Jan 2005, 23:29

Hi
Just a quick question, Have you checked the fuel shut off safety switch under the bonnet?
If this trips you will get both keypad lights on & be unable to enter a code.

ACTIVE8 · Post by **ACTIVE8** » 24 Jan 2005, 23:43

Perhaps this company can be of assistance to you :-
http://www.codeman.org/index.html
They do mail order work, and I don't know where you are in the U.K. but maybe they are near to you.

paranoid · Post by **paranoid** » 25 Jan 2005, 01:01

Mrjazon can you let me know if you get the e-mails please, I'm getting some wierd reply things back.

Dave Burns · Post by **Dave Burns** » 25 Jan 2005, 01:05

So there is nothing wrong with the ECU or keypad, if its a diesel there is a dollop of immobiliser electronics on the injection pump, if this goes down its a pump off job to replace it.
Dave

mrjazon · Post by **mrjazon** » 25 Jan 2005, 01:17

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

So there is nothing wrong with the ECU or keypad, if its a diesel there is a dollop of immobiliser electronics on the injection pump, if this goes down its a pump off job to replace it.
Dave
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">its a petrol 1.8 16v

wheeler · Post by **wheeler** » 25 Jan 2005, 01:48

sounds like there is a missing feed or earth at the ECU to me,try removing the gearbox earths & cleaning first,if its still the same then you'll need to start checking feeds going to the ECU.

mrjazon · Post by **mrjazon** » 25 Jan 2005, 02:30

thanks wheeler i did have some work done a while back (engine rebuild)could have somthing to do with it you never know ill give it a try and post back my results

mrjazon · Post by **mrjazon** » 25 Jan 2005, 03:03

was wondering if i plugged in my ecu in another Citroen (my friends)same model and my keypad then put the code in get a solid green light start up the car unplug the keypad turned off ignition took out my ecu and then plugged it back in my car would that solve my problem would i then be able to start my car if i leave the keypad plug off (would this unlock my ecu)or does it need a power supply to stay unlocked,also would harm my friends car hes a bit reluctant to try