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I finally decided to repair the ABS control module, since it was occasionally triggering an “ABS pump motor” error, so I just had to re-solder the usual two internal connections. I managed to open the control module VERY carefully without damaging anything inside, re-soldered the two connections, and closed it all back up, but now, unfortunately, ABS light is on, the error code is B1342 "internal ABS control module fault". Nothing on the circuit board has been touched, apart the two soldering points.. I'm really discouraged.. do I have to look for a new control unit now?

 

Did you only resolder/reflowed the two terminals for the pump motor? Il guess that it is always a good idea to carefully check all other terninals on the ABS plug.. reflow the solderings just becourse..
And one thing i have noticed with old electronics, is that thoose small components that looks like tiny boxes (usually resistors) can develop tiny cracks in the solder at the ends, my humble guess is its due to "thermal fatique"..

/E

 

I only resoldered the two terminals, nothing else. Before opening the unit, it worked fine, the error caused by the solder joints only occurred occasionally

 

The first time I performed the solder fix for the power terminals I was so impressed with my novice soldering skills that I managed to reattach the connectors improperly and several pins were mashed sideways. DOH ! It was a Homer Simpson move.

Luckily for me I was able to straighten the pins without any of them snapping off, I was incredibly fortunate.

Not saying you did the same thing. But it might be worth a try to disconnect / unlatch the connectors and clean the pins with some CRC Electrical spray cleaner and inspect them all for straightness, etc before reattaching the cable. Worth a try.

Z

 

Did you check the other 21 pins which belong to the signal connector? If you didn't re-solder those, it's possible that one or two were a bit dodgy and removing the circuit board has made it worse.

Richard

 

The good thing about the 9 valve blue solenoid module (JLM21323) is that the X308 sedan from MY 2000 onward shares the same one.
The part number on the case is a non-Jaguar part number. It will be something like LNF2210AB

 

I checked everything with a magnifyng glass, every solder joint apart from the usual two pins to the pump seems perfect. It's unbeliavable, I worked on hundreds circuit boards and never had a failure like this. The part number is LNF2210AD, I am looking for a used one, but it seems very hard to find. My car is Vcats, so if I buy another unit I think it will be plug and play, right?

 

If the module has been sitting in a salvage car with the power disconnected for a long period of time, the INSTPK display with state WRONG PART FITTED when it is installed.
The CAN bus will not recognize the module and needs to be 'introduced' or configured via WDS/IDS.
I usually install a 'dormant' module in one of my compatible cars if the donor car is not available to configure. (I have 7 Jaguar 4 liter V8 cars that cover most of the 5 possible modules for these cars)
The only ABS module I cannot configure is the 1997 XK8 with TRACTION CONTROL.(JLM20130)

Your ABS case is marked LNF2210AB but that is not a valid Jaguar part number. The actual correct number is JLM21323 as listed in JEPC

 

Thanks for your replies, I checked everything one more time, but I just can't figure out how it could be broken without me having touched anything. Maybe should I try disconnecting the battery? I did the work without disconnecting it to avoid losing memory of other units.

 

Check fuses F4 (5A), F16 and F18 (both 30A). All in the engine compartment fusebox.

 

Yes i disconnected the ABS unit with the battery connected, obviously with ignition off. The fuses are all ok, that's the first thing I checked, they are the three locked with a security clip.

 

Have you tried driving the car to see if the ABS resets itself? You could also try a hard reset (and yes you will lose the window positions and the radio might need a code, but unless you need your drive readiness monitors set for the Italian revisione I wouldn't worry about losing anything).

 

I haven't been able to test the car on the road yet, I'll try disconnecting the battery first, here in Italy, during the "revisione", the monitors are not considered, only emission test, the emissions must be lower than the limit of this car (EURO2)

 

I would definitely try driving it before deciding the module is dead - the car needs to see all four wheels turning at sane speeds - when it does, maybe the light will go off by itself.

 

I will try

 

There's nothing to do, I'm looking for a second hand abs ecu. Tried a hard reset, didn't work. Tried driving, ABS light always on. No messages on the dash other than "ABS/trac not available" but the engine is in fact in restricted performance. The error is always the same, C1137 internal ABS control module fault. What happened is a mistery. Hoping that a new module will solve the problem..

 

Found a used ABS control module, but unfortunately, just like Motorcarman thought, instrument display shows "incorrect part fitted" and the error stored is B2500 can bus communication error. Is there nothing I can do with my Icarsoft 2.0? Do I have to go to a dealership?

 

Will a current Jaguar dealership even accept a old Jaguar for service work?
Just curious.

Brian W.

 

It's the reason why I'd prefer to avoid going to a dealership, if possible..they might charge me for hours of work and then tell me it can't be done, I know how things work here..

 

You're unlikely to find anyone at a dealership that was trained on this era of car - they'll be in an independent shop by now.