Hello I'm Daryl. I bought a 2005 3.0 x-type , 40,000 miles. It's been driven from Chicago to Florida once. Very clean car. I had it for a month and one day, after a grueling struggle into the city, DSC SYSTEM FAULT appears, along with the ABS light on the dash. My odb2 / CAN reader pulls P1000 (I know what that code means), however I'm seeing readings in the "hidden" diagnostics test - one referred to a 'road speed's situation. does that hidden data mine contain error code info? Or does it display current 'values' in the engine, battery voltage, etc? How can a DIY mechanic out that info to use when assessing the DSC FAULT ? if it's a sensor for abs on one of the brakes (something like that?) Or a speed sensor, is there a diagnostic tool that tells me WHICH sensor is bad??

Daryl

 

Which "hidden" diagnostics test?

 

Hold the button on the signal flasher? on the left for 2 seconds while the car is in ignition position I. It puts it into a diagnostic mode. I’ve seen it referred to as “hidden”, however that’s probably a lousy description.

 

If it would be something like a wheel speed sensor or soemthing related to the ABS or DSC that would come up as a C code. Can your reader diagnose C codes? That could be why you aren't seeing anything when you scan it.

 

The "hidden" one will not be helpful for your problem. As Alpha said, 99.9% chance your reader does not show C codes for a Jaguar. 100% possibility that when you get a reader that does, that you will have codes to guide you by using SEARCH in this forum.

 

Thank you for the prompt reply. I have two scanners with CAN reader capability, however, they must be junky.

 

Best readers for Jaguar, i.m.o., is iCarsoft i930 and LRII (my preference).

 

The codes in there are probably 10+ years old as no-one clears them. Use a proper tool.

BTW if you use Search you'll find I keep posting this detail and you could have saved yourself time and effort.

 

So if in test mode, I can see the battery voltage, speaker volume, engine details and a bunch of stuff I don’t understand. However, I have to ask - might one of those readings toggle through the 4 wheels and speed value? If yes, that would identify the specific wheel. I’m not sure if this data ya is carried. I’m still looking for the gas table (name:value pairs) for the diagnostic test program. Thoughts on this?

of course, I’ll probably need to buy my third obdII/can reader!

 

The ABS control unit is known to have bad solder joints. Sometimes it's intermittent, but it will trigger the ABS light and the DSC Not Available messages. I also had it happen with a bad rear wheel ABS sensor. You'll need a better code reader. I have the iCarSoft 930 and it reads the "C" chassis codes.

 

Correction per previous post: gas table should be hash table (computing term)

 

Answer to the "hidden" stalk codes. No it does not show ABS, wheel sensors, reluctor rings, etc. It's ok to show current charge value of battery and a very small amount of other information like fuel pump voltage value, etc. But, on the whole is relatively not very helpful.

 

I was hoping to find one problem with maybe a wheel speed sensor. About a month ago, the DSC ABS SYTEM FAULT came on after a grueling drive in rush hour traffic. It turned off three days later. Now, a month later, it’s on for good. I took it to a mechanic I know and he pulled the codes attached. Hopefully they are old, or just irrelevant uncleared codes. Other than this ugly situation, car runs great!

 

And under the hood - the abs module looks like it’s been “messed” with. The tape is a bit roughed up looking.

 

The C1279 coud be your problem as it is for the ywa sensor which will cause the DSC message. Here is a thread that explains about it: https://www.jaguarforums.com/forum/x...t-i930-163004/

 

Thanks for the reply. I read that I should try to first clean the abs sensors etc before ordering the part for the yaw repair.

 

I had the "DSC Not Available" as well as various CANBUS communication failure codes. Per one of the codes, I replaced the right rear ABS sensor which knocked out some of them, but the Yaw Sensor code remained. The yaw sensor is underneath the shift lever and, if you have an automatic transmission, is easy to replace. Mine is a manual transmission and it was a gigantic PIA to change it out. The price of a new OEM yaw sensor is crazy (somewhere around $ 400) so I bought one on ebay from a salvage yard. for under $ 100. MAKE SURE the part number on the replacement yaw sensor is the same one that's in the car, that is critical! I didn't, and the first one I received wouldn't fit (connector was on opposite side than the original). Sent it back, found the right one, and the DSC code went away.

Hope this helps.

 

If you had a problem with one of the wheel speed sensors I would have to guess a code would have showed up for it. I didn't see any on the list. Yaw sensor would be the place to at least start. Contact a member on here, Dr. Dome, as he parts out X-Types and probably has some used ones for a reasonable price.

 

Awesome. Thanks.

 

Ok. I think I can easily get to the yaw sensor. Can this part be tested ie with a multi meter to see if it is bad?