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Diagnosing a defective ABS/DSC Module

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  #1  
Old 07-16-2021, 02:29 PM
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Default Diagnosing a defective ABS/DSC Module

Recently posted regarding the ABS/DSC light/message on my 2003 XK8,4.2L. Was driving and got the DSC message, a little later the ABS amber light came on also. Checked & Cleaned the front speed sensors, then tested with DVM. The R.F. harness had a intermittent connection so it was replaced with new harness. Scanner revealed a permanent code C1267 which indicates a defective module if Hard Reset does not reset the lights. Scanner also indicated all 4 speed sensor were functioning properly. No luck, lights still on. Cruise control still works and after another scan, only get P1000. Not other codes except the C1267 and a C1295. C1295 is Steering Axis sensor. . Seems it was a temporary flag. . The C1267 indicates Module needs repair. Decided to try Module Repair Pro in Van Nuys, Ca. Any other suggestions? Their price seems reasonable and have good reviews. (Who doesn't?) Looking for personal experience.
Also; after removing the module, appears I can drive car w/o the module. What about the rods or pegs that stick out, will they fall out? Any other detail I should know? Will try to include the JTIS sheet detailing the code C1267.
 
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XK8 DSC Module T.S. Codes.pdf (48.7 KB, 151 views)

Last edited by GGG; 10-04-2021 at 02:44 PM. Reason: Edit typo in thread title
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Old 07-21-2021, 01:35 PM
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With no suggestions or replies, we have removed the DSC module and sent to Module Repair Pro. Called A.S.I. but they only do 1997-2002. Newer ones, they do not repair. There were a few others, but decided to use this service due to others positive feedback on forum. The later module could be a bit more difficult due to design and mods made over the years. Perhaps this will eliminate the ABS light and DSC message.
 
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Old 07-21-2021, 05:51 PM
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Kelly, I hate that for you, but I do think you are doing the correct procedure to find the answer.
Please keep us up to date and getting it back together should be a lot easier with what you told me you were doing. Hope it works.
 
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Old 07-21-2021, 11:42 PM
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Default Keep at it

Sorry to hear about your ABS difficulties esp for the later Gen3 model. For my 99 XK8, it’s fine for now but I’m expecting the old solder repair in the near future.

Good luck with your repair, and let the Forum know how this repair shop does.
 
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Old 08-23-2021, 05:56 AM
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Originally Posted by DavidYau
Sorry to hear about your ABS difficulties esp for the later Gen3 model. For my 99 XK8, it’s fine for now but I’m expecting the old solder repair in the near future.

Good luck with your repair, and let the Forum know how this repair shop does.

Hello David I have a 2001 XKR with intermittent failure light. Which is the "old solder repair" you mention?
Is there a DYI in this forum for that situation?

Thanks in advance.
 
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Old 08-23-2021, 06:59 AM
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Originally Posted by claudeh
Hello David I have a 2001 XKR with intermittent failure light. Which is the "old solder repair" you mention?
Is there a DYI in this forum for that situation?

Thanks in advance.
Here is a pic of the location of the terminals relative to the case. I did mine by carefully drilling a hole about 20mm diameter in the corner shown and resoldering through that opening. Sealed up with a rubber grommet after the job.

 
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Old 08-23-2021, 07:42 AM
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Hey Baxtor thanks!

Did you have intermittent fault. Did you check anything before opening? I mean before drilling, is there anything to do.
 
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Old 08-23-2021, 09:29 PM
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Originally Posted by claudeh
Hey Baxtor thanks!

Did you have intermittent fault. Did you check anything before opening? I mean before drilling, is there anything to do.
Yes, l had intermittent fault, could have been the other causes but went for the most likely and turned out to be correct choice of action.
If you do the hole saw in the corner just make sure to have the centre pilot bit set shallow and finish off the hole penetration by hand.
 
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Old 08-24-2021, 05:54 AM
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Thanks Baxtor, I´ll try doing so. If I do, I will take pics and post them here. Where is the ABS module located?

Thanks once again!
 
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Old 08-24-2021, 07:52 AM
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Originally Posted by claudeh
Thanks Baxtor, I´ll try doing so. If I do, I will take pics and post them here. Where is the ABS module located?

Thanks once again!
left hand side of engine bay toward the front. You'll notice all the brake lines snaking up to it.
Those brake lines need to be undone where they enter the top to create clearance to remove the electronic module from the main ABS unit which can stay in place. The control module is attached with torx fasteners l think but it will not just come straight up when they are removed. It needs to be moved away from the valve block to clear the solenoids first (the brake lines need to be gently moved slightly to do this), then up.
I got away without the need to rebleed my brakes when l did mine. Take your time and slow and steady should get it done.
 

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Old 08-24-2021, 08:23 AM
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With this problem on my 1999 convertible, i got the amber warning light, the 2 error messages BUT NO CODES .

The solder repair fixed this. l only mention it because if you also have codes it could be something else.

The job itself isnt hard, i split the cases and resealed them with a dab of JB weld in the corners and sealed with black RTV (pen points to repair)..........................just in case i have to go back








 
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  #12  
Old 08-24-2021, 08:59 AM
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You will ALWAYS get a C1095 DTC if the solder joints fail.

You just can't read 'C' codes with a generic 'P' code reader!!
 
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  #13  
Old 08-24-2021, 09:08 AM
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Originally Posted by motorcarman
You will ALWAYS get a C1095 DTC if the solder joints fail.

You just can't read 'C' codes with a generic 'P' code reader!!


No, YOU will always get a whatever code, because YOU have dealer standard code readers.


How many times. THE VAST MAJORITY OF US DO NOT HAVE DEALER SPEC CODE READERS?!

Hence me trying to help with what most of us have, rather than just being a cleverdick and posting codes that cannot be read of accessed by the majority.





 
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Old 08-25-2021, 08:18 AM
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You stated that there are NO CODES. I said there ARE CODES.
 
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Old 08-25-2021, 09:02 AM
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Originally Posted by Markel
No, YOU will always get a whatever code, because YOU have dealer standard code readers.


How many times. THE VAST MAJORITY OF US DO NOT HAVE DEALER SPEC CODE READERS?!

Hence me trying to help with what most of us have, rather than just being a cleverdick and posting codes that cannot be read of accessed by the majority.
I think you are out of line. There are many code readers able to read Jag specific codes and some are under $200, which is cheaper than throwing parts at a problem. There are members who are not comfortable taking a ABS module apart or boring a hole in the case, and they would benefit from knowing if the solder joints are bad before taking the car to a shop.
 
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  #16  
Old 08-25-2021, 12:29 PM
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Originally Posted by RJ237
There are many code readers able to read Jag specific codes and some are under $200, which is cheaper than throwing parts at a problem. .
Hey RJ 237 thanks for your suggestion. Could you maybe link to a Jag specific code scanner under 200 which is trusted and tested by you guys?

Thanks a lot!!!


 
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Old 08-25-2021, 02:19 PM
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Default Well known common repair

Originally Posted by claudeh
Hello David I have a 2001 XKR with intermittent failure light. Which is the "old solder repair" you mention?
Is there a DYI in this forum for that situation?

Thanks in advance.
Claudeh,

Apologies for the tardy response, as I’m not often here on the Forum much.

The ABS module solder pin repair is well known to the Forum here. I recently did it and then subsequently sold the car. Reasonably DIY-able. IMHO it’s 3 on a 1-5 scale difficulty scale. Fully detailed in the jagrepair.com site. Link below. Good luck. JagRepair.com - Jaguar Repair Information Resource
 
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Old 08-25-2021, 02:22 PM
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Thanks a lot!

 
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Old 08-25-2021, 08:59 PM
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Originally Posted by claudeh
Hey RJ 237 thanks for your suggestion. Could you maybe link to a Jag specific code scanner under 200 which is trusted and tested by you guys?

Thanks a lot!!!
Well, there are 30 pages on this...

https://www.jaguarforums.com/forum/g...-%2A%2A-33347/

I suggest you look through this thread, focusing on whether they work for your MY. I have used the foxwell myself

Amazon Amazon

Specifically works fine for 2001-2006 and many advanced PIDS, I generally use IDS now. I don't know how the foxwell works before 2001.
 
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Old 10-02-2021, 08:33 PM
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Originally Posted by motorcarman
You stated that there are NO CODES. I said there ARE CODES.
Since I get the P1637 repeatedly, does that necessarily mean I automatically will have the C1095 in there? Does that "C" code stay even after re-soldering those two power pins?
 


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