Code P1609 after ECM update
After fixing a number of vacuum leaks, and updating the ECM with our factory Jaguar scanner, we are getting code # P1609 internal control module failure and no communication.
Do I have any recourse as we used the factory tool? Is there any way to recover this?
Frank, have you tried to disconnect battery cables about 30 minutes and touch together before re-connection of fully charged battery. Switch key on and let sit for approx. 1 minute to allow throttle reset.
We have doe this for other reasons, we will try again.
Yes, we did that and same results
Hello Frank! I don't have much to offer you besides a question. Where is the P1609 being reported? That must be coming from the ECU which was updated by flashing or by changing it out physically? That sounds so much like all the stuff we see with Daimler all the time if the coding does not fit right for the vehicle.
Hi bob, it is from the PCM - with the Jag computer there are no options (like MB), follow screen instructions "update existing control unit"
Thank you for the replies, we will order a replacement ECU
Frank, I'm wondering how the ECU is reporting with no communication. To me sounds more like a corrupted file than a hardware problem. That being said, I would try a hard reset overnight and see if you can reload the software, we have recovered a few ECU's this way. Also, are you using the old WDS or the IDS for programming? We use Autologic primarily and when we flash a ECU there are usually 7
Frank, It may be possible to repair this ECU on the bench by taking known good flash from a donor and program into the original. Best chance is to have both on the bench. I do this with VAG vehicles all the time. My best guess is that the vehicle had an aftermarket tune causing the crash. We all sign an agreement when buying the factory software that takes any liability off the manufacturer…
We did an overnight hard reset and we will try to program as a new unit this morning - if there is still an issue i will reach out to you
Those codes a fairly common on the jags. We have had much success with used units and they are usually very cheap. Lkq usually has a great supply. Very common on the x type to see that. However usually on them it doesn't turn the light on.
Hi Frank, P1609 unfortunately means the ECM is done. It has an internal fault, whicj is a polite way of saying the internal components (microprocessors) are inoperative. In this case the microprocessors cannot communicate to each other "internally". Replace the ECM and program it. Tom …
we are still working on this, replaced the ECU and have had a heck of a time programming it. We are up to uploading the VID block, and our factory scanner, SDD, is asking for password? We are subscribed to TOPIX programming - system is asking for a 14 charter password. our first time seeing this
Hi Frank, I don't know how helpful this is but there is a TSB that goes over programming. I believe it is 1-186 published 11/04. I browsed through it and don't see anything about a password.
We do have that, and you are correct - there is no mention of password - hence our problem - thanks
Do you still have your Autologic Tool? They have programming for Jaguar now. You may be able to use an older version of SDD that does not require the password. For me, I just clone the European PCMs most of the time. Where your original is corrupted, it would take more work to reconstruct. Usually if you can get a used ECU out of an indentical Jaguar the VIN and immo can be corrected from the…
we are not able to clone, not sure how that is accomplished - we do have the Autologic - put not interested in 3K to update the Jag portion of our subscription - it is because autologic only programs ECU for engines and we need to be able to update all modules. However, I will reach out and see if they will do a onetime pay as you go and try this - Thank you for the reply
The update issue is what got us here, performing the update created the crash