I have NEVER had to replace a wheel speed sensor on a X100/X308 unless it had physical damage. (failed wheel bearing, damaged hub etc.)
I replace LINK harness all the time!!

Every once in a while the ABS module fails with a HARD FAULT C1145/C1155 and I toss the module into the scrap pile.

 

Agreed it is NOT the speed sensor. I have replaced the wiring harness too with no luck. But if you commonly toss out the ABS modules onto the scrap heap where do you find replacements?

 

I worked at the dealer until 2006 and I 'collected' old/faulty ABS modules that were discarded by me & other mechanics in the shop.
Once I figured out how to repair the common 'solder-joint' fault, I had a nearly endless supply of modules.

A suspect module can be swapped to a 'known-good' car and if the fault follows the module, I condemn it and replace the faulty unit.
If the module is found 'OK" in another car, keep looking for a circuit problem with THAT car.

I do have a few ABS modules with C1155 HARD FAULT that will NOT clear in any car I install them in.
They are in the scrap pile.

 

You have explained my situation exactly. I have been chasing this problem for 5 years and I have stopped throwing money at a hopeless problem. I need to replace the module. That is certain. The trick is there are none that I have been able to find. So my basic question is two fold:
1.. Does JagBits in California's re-building service offer hope for correcting the fault in this box? Or not? So far I have no answer. If they merely re-solder the board that will not work. Has anyone used their services?
2. Does anyone have a good module to sell?

Don

 

If you are discussing the 1997 XK8, that is a problem because that is a 'one-year-only' ABS module. (actually one of two possible modules)
Depending on whether you have TRACTION CONTROL or EXCEPT TRACTION CONTROL will determine what module you need.

VCATS label in the boot or look at the module to determine if it is a 5 pipe (6 valve) or 6 pipe (9 valve).
5 pipe = JLM 20129
6 pipe = JLM 20130 (very hard to find)

The module case will NOT have the correct Jaguar part number. It will have an LJAxxxxxx number.

LJA 2210BH = JLM 20129
LJA 2210AH = JLM 20130

The 1998 X100 and X308 (X308 MY introduction) started sharing ABS modules so from then on there is a wider pool of parts to choose from. (2 door cars and 4 door sedans)

 

At jagbits we rebuild your module after testing it to see what's exactly wrong with it, as long as no one else has opened it and worked on it we will fix it. The reason we rebuild your module and do not send you someone else's core that we rebuilt is very often the ECU in your car will not accept any other module but your old one, it will say incorrect abs module installed, we have rebuilt 100's of modules with great success and we off a lifetime warranty.
Gary
Jagbits.com

 

This is very interesting. Looks like I'm out of luck at JagBits since my module has been opened and re-soldered a number of times. Drat!

But my 5 pipe system is not marked with either option Motorcarman has suggested. It is marked MJA 5920 BE Is this totally the wrong one? This problem has been going on for a few years and several Jag specialty shops in my area hare been unable to help.

Secondly what are the implications of ignoring the Stability Fault Alarm and the lit ABS light and just driving it normally? My RR Silver Spur defaults to a conventional non-ABS system if its ABS light comes on. Does this Jaguar do the same thing or not?

Don

 

This is VERY curious: I have photographed the VCAT label in the spare tire well of the boot and the numbers and letter combinations do not match the advice received at all. I have numbers for the PSM, DSM, PDM, DDM, SLM, IPK, BPM, and ECN categories. But none of these categories match the target value for a 5 pipe system, namely LJA 2210BH. Any advice now?

Don

 

Don is this the exact part number off your module: LJA2210BH ?

 

Maybe the ABS module is NOT printed on the VCATS?
Been a while since I looked for numbers on a VCATS.

If your car VIN is 001001 - 018107 and is a 5 pipe (6 valve) then the ABS required for your car is JLM 20129. (LJA 2210BH printed on the case)

Any other module is incorrect and will likely not function properly.

 

It appears that something is quite wrong with my car's ABS system. The actual part number shown on the present ABS module is MJA 5920 BE which is much different than LJA 2210 BH. My VIN is 013926 and the car was made on April 23, 1997. So the module should be LJA 2210 BH, but that is not what is installed. Perhaps the search should be to get the right bleedin' part installed to have a hope of making this system functional. There have been many "helping hands" in here over the past 5 years all of who were "trying" to solve a problem. But it may have made it worse. This is intriguing. But the fog is starting to lift.

Don

 

MJA 5920 BE this is the part number for the pump not the module what is the part number off the black module?

 

Clearly the responders are dealing with a person who barely knows the difference between a gudgeon and a pintle, but the tiny nearly illegible numbers on a small black box mounted next to the pump appear to be LBT 6690 AA. If this too is not what is requested I'm going to need hand-holding to find the blasted module. My maintenance records show that a new module (unknown part number) was installed at a Jag specialty shop in September of 2020 and it worked for a little while and then reverted to the Stability Control Fault once more. It was a pricey little devil.

AHAH I now see the module which is part of the pump assembly. I can see where the part numbers are located but the system needs to be disassembled to be legible. So it is unlikely that I'll be able to see what they are. This may be the end of this line of investigation. The car goes into the shop tomorrow to replace the purge valve which started this whole string.

I really appreciate all the hand holding that has gone on as this effort was a bit like trying to explain via email how to land an aircraft when the pilot has suddenly became unconscious.

Don

 

Back in 2000 they were between $1600 and $1800 new from the parts dept. depending on the variant.
That is why I started cutting them open and finding out what was failing.

 

Please, what code did the bad purge valve display?

 

It is P-1111. There are no serious symptoms to the operation of the car except the Check Engine light. I expect it might have difficulty passing a smog test. See responses at the beginning of this marathon thread for more details.

I questioned the service writer about only getting code P-1111 (System Checks Complete) and he reran the scan. In actuality the codes were P-0441 (Purge Control Valve Fault) and P-1111. Looks like both he and I learned something today. Crazy business this.

 

P1111 is NOT a fault. (it is 'readiness complete')
P1000 or P1111 will NOT trigger a 'check engine light'.

(see post #10)

 

THAAAAANK YOU.
Folks have tried to explain this to the gentleman from the jump, lol
To the guy asking about codes,,, what code do YOU have?

 

Do you have a code that you want to share?

 

The alarm code was P0441 before the new Purge Control Valve was installed and now that code is gone and the Check Engine light is out. Success thanks to a new part from Vancouver, BC, Canada. My kitty has 8 lives left.

Don