Need help programming used Engine Control Module

Freddie Owner/Technician Houma, Louisiana Posted   Latest   Edited  
Discussion
Programming
2004 Jaguar XJ8 4.2L 6-spd (6HP26)—SAJWA71C34SG25225
Crank / No Start

Car went through car wash and water got in through cabin air filter and destroyed Engine control module. I sourced a used module and I am able to program module using Jaguar IDS and it even asks me to input VIN on cowl and when I do then press enter it repopulates VIN from used computer. I tried 10 times then just proceeded with used computer VIN, now I am back where I started. The car will crank but no start, I am pretty sure the VIN not matching is the reason for the no start. Am I even able to use a used engine control module? If so how do I change this VIN. I am not opposed to sending this to Jaguar dealer but the dealers here won’t touch any car past 10 years or older!

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Allan Owner
Sterling, Virginia
Allan Default
   

Under immobilizer there is something like sync immobilizer or pcm replaced or similar. When you see it you’ll know it. That will get it to run. Then see about vin if that’s still an issue

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Jaime Diagnostician
Ocala, Florida
Jaime Default
 

Freddie, What interface, IDS software version and laptop/PC operating system are you using? If I recall the last time I messed with one of those, it was either the same MY or very close, and I found I had to use a VCM I, I had to use an older version of JLR IDS than what Jaguar offered online (like 114​.​xx) and it had to be loaded on a Win XP Pro O.S. Yes, a used module CAN be…

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Freddie Owner/Technician
Houma, Louisiana
Freddie Default
 

I am using version 130 With mongoose drew tech. Windows 7 VM

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Jaime Diagnostician
Ocala, Florida
Jaime Default
 

If, after following everyone else's suggestions, you find yourself in the same boat as when you posted originally, I think you might have to do what I suggested. I believe I still have the setup I had to compile - because I wasn't going to just throw away everything I had purchased just to get the one car running on which I was working. Let me know if you get to that point and I'll look for it.

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John Owner
Petal, Mississippi
John Default
 

It will still start with wrong vin u need to relearn immobilizer and do parameter reset u will need 2 keys as long as pcm part # are the same

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Walter Mobile Technician
Plantation, Florida
Walter Default
 

I would suggest you program the cluster as if you replaced it. You will need 2 Keys though the cluster programming will include key programming and ECM sync. Under "Service Functions" Run "Configure new modules - Instrument pack/Instrument cluster control module" that should get it running. Not sure why you are having an issue with the VIN in the ECM.

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Scott Technician
Chico, California
Scott Default
 

I would try to program as a new module. And see if that allows it to go through.

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Walter Mobile Technician
Plantation, Florida
Walter Default
 

I have never tried this before using SDD but as in Ford IDS you can program a used module via Blank Path Programming so that the current module data is not inhaled by leaving the IG off when instructed to turn it on until SDD forces you to manually ID the vehicle. Once you manually ID the vehicle go to "Service Functions" and Run "Configure new modules - Powertrain control module". Hopefully…

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Freddie Owner/Technician
Houma, Louisiana
Freddie Default
 

I want to thank everyone for the help, I couldn’t help but wander why this thing would crank but not start. I figured that my programming of the module and programming the keys was ok because I had no security issues and the security led goes off with key on. So today I decided to check the Underhood fuse box and low and behold fuse 30 for the ignition coils was blown. It Now runs!

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Jaime Diagnostician
Ocala, Florida
Jaime Default
 

I wonder what might happen if you installed the original ECM? Did it cause the fuse to blow?

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Freddie Owner/Technician
Houma, Louisiana
Freddie Default
 

The original engine computer was toast it got filled with car wash blue foam soap and water. I opened the case and it corroded and traces are entirely missing. So I think the old ECM did have something to do with the fuse blowing.

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