Hello all:
I have been a member for the last 10 years on the other side of the forum. - XJ6 Series 3 and XJS (1988). Even though I decided that at my age (76) I was not going to get into any other projects and just maintain my XJ6 and XJS, the bug bit again.
I recently acquired (for a song) a 2001 XK8 with a no start condition.
I had a tech come by with his laptop to scan the car for issues. He found that overall everything is functional except the no start issue. He found that the immobilizer is triggered and that prevents the signal to the starter relay to activate, along with energizing the injectors for fuel. The relay can be manually energized to operate the starter, so that part of the system is good. The fuel pump and throttle body assembly are both good.
"The final analysis points to the ignition switch, transponder ring and a defective KTM where the signal stops, that is 'security immobilized".
All other modules are good.
He recommended that the ignition switch and key transponder??? be replaced and I should be good to go.
He explained to me that he followed the signal from the ignition switch through the body processor and terminates at the key transponder which indicates it is immobilized and for some reason the signal does not activate the fuel pump to prime the system and activate the relay to start the engine.
DOES THE ABOVE MAKE ANY SENSE TO THOSE OF YOU IN THE KNOW ABOUT THESE CARS?
I am not familiar with the electronic side of things on this car, so any help would be appreciated.
If the consensus is that all of the above is correct, how do I go about replacing the said defective items. switch, transponder ring. The KTM is a no brainer.
The PO is going to provide me with the items that "need" to be replaced. (USED from another XK8). If you all say YES, after replacement of the said parts, will the system need to be reprogrammed?
If more info is required, please let me know. I need all the help I can get to resolve this issue. Thank you all in advance.

 

Hi,
Sounds like you're in the correct area, but do not change anything at this point.

Do you have another key to try?
Does the instrument cluster perform the self-test when you turn the ignition on (position ii)?
What code(s) did the tech pull to determine his diagnosis?

The Key module (i) rarely fails and (ii) is a pig to get to behind the fascia air vent. You will definitely need some programming if you change it.

Also check that the inertia switch hasn't tripped ( in fascia fusebox).

 

Codes are mandatory as posted above.
What device is he using as the car needs a working SDD setup.
.
.
.

 

UPDATE:
I went ahead and installed an updated (USED) ignition system, transponder ring and the matching KTM. The car is now turning over fine, fuel pump is working and the fuel system pressured up. The throttle body is functioning properly. There are no codes present at this time. I just have no spark to get the engine to fire up.
Is it possible that it could be a CRANK or CAM sensor or one of the ignition relays or fuses?
I have the full factory electrical guide that breaks down all the components but I am hitting a brick wall at this time.
The car is no longer IMMOBILIZED as I can now crank the engine and I have good fuel pressure, just no spark.
WHAT IS THE NEXT STEP? Anyone?
BTW: This car has the updated metal timing chain tensioners.
Thanks.

 

So you changed the ignition lock, key and KTM as a set?

 

@ michaelh: Yes i did.
Doing some research re: no spark, I read that it is possible that the KTM has to be synched with the ECM or that the crank/cam sensors may be at fault.
My problem is that I do not have the IDS/SSD software to go any further. The 2 foreign car shops near me will not touch the car unless they did all the work on the car. They want between $1000 and $1500 to redo all that I did but with new parts.
I am looking for a good copy of the IDS/SSD? software to download on my laptop and purchase the compatible patch cable to do the job myself.

 

Does anyone have a good version of the IDS software to give me or can you steer me in the right direction to get the software?
The last 8 digits of the VIN is *********1NA12823.
Thanks

 

For IDS software to work, you need a Rotunda VCM and a laptop with Windows XP PRO 32 bit or Windows 7 PRO 32 bit.

A generic J2534 communication device needs SDD 125 or later.

 

That's a pain as you'll need to keep the original; key for the door/boot locks. I suspect he original problem could possibly have been solved by just re-pairing the key to the car, but you're stuck if you don't have the tools to do that.

For spark, check F16 (5A), and F18 (10A) in the Engine Management fusebox and also the Ignition coil relay:




IDS/SDD is available on the internet, mostly in VM format. Native installations require a 32 bit laptop (Windows XP).

If you're not in a hurry I could let you have copies of the V125 and V130 VMs on a DVD (too large for attachments).

 

motorcarman beat me to it.

I'm trying to get the same setup but the proper adaptors he mentions are scarce and costly this side of the pond

 

@michaelh: I also got the door and trunk locks from the donor car, together with 2 sets of keys. I will change the locks out after I get the car running.
Also, I appreciate the offer of the copies of the V125 and V130 VMs on a DVD. I will PM you my address. Thank you.

 

I sent the PM to "michaelh" Is that correct?
I also read motorcarman's post. Since I also have to get "the same setup but the proper adaptors"? he mentions, if you need one I can probably get it for you here in the USA.

 

PM received.
I'll get that cut and out to you soonest.

I have the instruction manual pdf somewhere as some light reading for you

P.S. thanks for your offer too. Please do let me know if you find a source that won't cost me a kidney

 

@michaelh: For sure. I will not be buying new. I am sure there are some 'gently' used ones around. I will keep you posted.

 

@motorcarman Which version or the Rotunda VCM do I need? VCM1, VCM2, VCM3 or VCM Lite? Who has it for sale? Maybe used? Do you know the correct Part Number for the one I need. I guess it is the one for Ford?

 

I think it's VCM1, but motorcarman's the guru

 

the old KTM 100% forgot the key, it happens when they sit for years. this was a no parts required fix

now you just need a cheap mongoose clone and sdd to get yourself out of this. run immo setup you’re done

 

A diagnostic setup that works for me on X100s and X308s is JLR SDD v. 131.03 running in a virtual machine on a Windows XP laptop, with a Drew Technologies JLR Mongoose cable. Before each use, I reset the laptop clock to August 1, 2012. When connected to an X100, the SDD reverts to IDS and has what I beleve to be all the diagnostic and bi-directional programming capabilities that were available to Jaguar dealership technicians at the time. This package includes update files up to 2012, which is probably virtually all of the updates that were ever made for the X100.

One of the cheap Mongoose clone cables will work for diagnostics, but it will be slower than the authorized Drew Tech version, and it is a bit risky for programming modules. However, my first Mongoose was a clone and I used it to update programming in X350 transmissions and a few other projects before I came into a genuine Drew Tech version. Definitely worth trying a clone Mongoose. For comparison, updating an X350 transmission with a clone Mongoose took a long hour of tense nailbiting, while updating with the Drew Tech Mongoose took just 15 minutes.

I have a Ford Rotunda VCM1 as a backup but I've never bothered to set it up because the Drew Tech Mongoose has always worked for me. VCM2 and later will not work. Be aware that there are counterfeit VCM1s on the market. There are websites that show how to tell the difference. If I recall correctly, Mazda VCM1s are the same as the Ford ones.

Cheers,

Don

 

If it is less than 500GB and you have the bandwidth, here is a secured and encrypted private cloud storage location that I own. I have used it in the past for this very same purpose. Free to use if it is less hassle. https://drive.proton.me/urls/33Y2S3NQ94#nn923WLi3cf7

 

I'm puzzled - did you change the ignition barrel? Are you trying to start it with your old key (won't work as the KTM won't recognise it), or the new key (won't work as the ECM won't recognise it)?

You don't need to change any of the locks to get this to work - you just need IDS/SDD.