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Yesterday when I checked I could see both cables incoming to the rear bulkhead. The cable then continues up the tunnel towards the engine compartment. Did not notice any connectors. There has to be a connector in there somewhere.
Have you located the ABS ecu? you can measure it right there at the large connector. You just have to get the pinout on the electrical pdf. On my 94 the ecu is above the driver's side rear wheel well, not sure on the 96 though.
Anyone out there have a code reader that can diagnose a 1996 xjs abs issue.
let me know the brand.
Thanks
Softball60/paul
LAND ROVER JAGUAR DIAGNOSTIC SCANNER TOOL CODE READER iCarsoft i930 has been known to pull ABS codes from other users. I am not sure how available this unit is anymore.
iCarsoft LRV1.0 has also been discussed as being able to pull ABS codes.
from what you've said, the car has not thrown a "code" per se correct? Not familiar with the above units, I have a pdu, which can get into the diagnostics of the brake systems, not just read a code. There is a great step by step diagnostic procedure for testing just about every aspect of the brake system without a pdu in the original manual. I've not see the manual for the 96 model year however with the newer "vacuum" brake system though. I'm sure its posted somewhere on this site, or at least the procedure.
The PDU is part of the WDS computer, but the PDU is also a standalone diagnostic tester. As far as I know, from the series 3 HE engine management up to the first models of the XK8.
Well, after another look see in the rear and pulling out rear seats I was able to locate the connector. Clearly marked right and left.
continuity checked out for both. I had the car jacked up and on jack stands. A little sketchy but I was able to get readings from both wheels in drive with just engine idle speed. Wheels were registering _ 7-8mph and ac voltage was.254volts at both wheels. You could clearly see the voltage go from 0 to .254v. I am assuming that if I gave the wheels more power the ac voltage would have climbed?
I think that after checking all 4 wheels I am reasonably confident that the sensors are okay!
If I think I have eliminated the sensors from the problem so…… should I just assume it is the module contacts that need to be re-soldered or could it be the module relay in the trunk or what else should be checked?
This is all i could find for wiring diagams for the 96 model year...not sure if this helps, it seems quite curtailed to the prior years, so I'm not sure its complete. Chat GPT could not find an online copy of it.
As I mentioned I am reasonably confident that the speed sensors are functioning properly. (Been wrong before)
I know that according to others that there is an inherent problem with the abs control module(solder joints for speed sensor input separate). If I understand, this condition will cause the abs light to go on after~15mph.
my question in my last response was : is there another failure mode ie; main abs control relay or other failed part that can cause the light to go on at speed over15mph then go off at startup and waiting to reach 15 mph before going again.
I guess…….being very old school and trying to use logic to solve my issues is the way I grew up. Thank goodness for our forum that allows all of us to input ideas, recommendations etc. when all else fails……….I will submit.
The PDU is part of the WDS computer, but the PDU is also a standalone diagnostic tester. As far as I know, from the series 3 HE engine management up to the first models of the XK8.
The picture is a WDS, the PDU is not the same. The PDU is not part of the WDS computer. They do similar things using different software.
AFAIR, the ABS Control Module and the Relay were deleted from the boot when the Teves IV system was introduced. So your car has neither in the boot. Just to clarify, you have a Teves IV system not a Bosch system.
