Question about 1987 Jaguar XJ6

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Electrical faults on jaguar

Hi i wonder if you could help because ive just bought 2 xj40 jaguar's and on 1 of them i have ANTI-LOCK FAILURE coming up all the time yet all seems well and it drives and stops a1 plus it has BULB FAILURE on the dash all the time yet every light etc is working ? On the other one i have the BULB FAILURE again but all seems to be working ok and i also have FUELING FAILURE coming up ? So can you please help & do you have any idea what is wrong ? I look forward to your reply Regards Vince

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  • vinny-jones Jun 14, 2008

    Thanks for reply will look into that but still need to cure the others .

  • eleon Dec 07, 2008

    I have the same problem, but it could be the wire contakcts from the "brain" to the instrumentpanel on the passenger side. Bad contakt couse water etc. Check it - I did after engin change 2,9 to 4,0 liter. Moust of the problems was gone. Not the fouling failur couse i did not find the rigth plase for it.

    Good loock

  • eleon Dec 07, 2008

    I had the same problem. Check the wirecontackts from the "brain" to instrument. Bad contackts etc one.

    That was my problem + bad relay on passenger side

  • LinkSpider Feb 17, 2013

    I have same problem 97 Jag 55000 miles,,, Bulb failure but then bulb works ABS warning, low brake fluid warn but fluid full I had a limp home mode kick in one time, red light comes on then sometimes no warn lights at all for a while then sporadic bulb brakes abs etc.. I heard in a few places its a crack in the solder inside the ABS module... I went to take mine off and off course someone had tried to take it off before and nicely rounded off the tiny star nut so I am screwed unless I take an angle grinder to it.. Never the less I have seen pics of what the problem looks like inside and its a cracked solder joint fix is to solder the crack back up.

  • LinkSpider Feb 17, 2013

    Inside the ABS module is a weak solder joint open up and solder


1 Answer

Bulb failure light is from one of the relays found attached to each light... if one of them sticks the dash light will go on even if all the lights work.... solution.. buy inexpensive relays on line and substitute until you find the faulty one.....

Posted on Jun 12, 2008

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Hi Jagman

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Get it heavy discharge tested first.

Good Luck.


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