I have researched for over a year now trying to find very technical information for my 2003 x-type (x400) 2.5L AWD. (Vin SAJEA51D73XD46161). I am needing a way to immobilize the immobilizer tranciever and transponders (immo off/immo delete). Can anyone point me in the direction of PCB (Printed Circuit Board) architecture, schematics or diagrams for the x400 low series instrument cluster and denso ecu. Any direction is greatly appreciated.

 

Can't bypass the PATS system. You're chasing a futile dream.

When a key is inserted in the ignition barrel, a hardwired input is supplied to the instrument cluster. This triggers the instrument cluster to read the PATS key code stored in the key and compare it with one that has been previously stored. If the ignition key is subsequently turned to the 'RUN/START' position the result of this comparison is transmitted to the ECM via the Controller Area Network (CAN). Assuming the key status message received from the instrument cluster is OK, the ECM will respond with a challenge code. The instrument cluster will after encryption send a response code, if this response code matches one that the ECM has calculated the fuel injectors, ignition coils, fuel pump drive and starter will be enabled. The ECM will disable the fuel injectors, ignition coils, fuel pump drive and starter if any of the following conditions apply: 1. A theft signal has been received from the instrument cluster, i.e. the key code has not been authenticated. 2. A challenge code has been transmitted to the instrument cluster but no response code has been received. 3. A challenge code has been transmitted to the instrument cluster and an incorrect response received. The ECM will log DTC P1260 for any of the following reasons: 1. PATS Sequence Time Out. This means that the PATS exchange has started but the two second timer has expired prior to receiving the Enable / Disable Engine status. 2. Identification transfer challenge error. This occurs following an ID transfer (Part replacement), if the result of the challenge is incorrect. 3. Challenge response errors. This occurs if the result of the challenge is incorrect. The challenge is performed on every key 'ON' cycle. 4. Invalid key data received. This occurs if the ECM receives incorrect Key Status data. System Diagnostics The best method to confirm the correct operation of PATS is to check the light emitting diode (LED). The LED should illuminate constantly for 3 seconds when the key is turned to Ignition 'RUN/START' position and then extinguish. This validates all PATS functions (PATS Prove-out) i.e. the key transponder matches a key code stored, the challenge/response sequence between the instrument cluster and ECM was successful resulting in the ECM being enabled.

 

Thank you Dell I appreciate everything you are telling me and I completely understand everything you are saying. The most concerning issue I have is, that every car from Audi to Ferrari to yugo has an immo off/delete procedure that someone has figured out and is for sale. Either by reprogramming or a bypass module. My question ,so far in vain is, what does Jaguar program into it's systems that doesn't allow an immo off/delete to be preformed? It's almost impossible for me to conceive that in today's technically savvy world there is not the existence of this information. Especially as commonly prevalent this no crank no start issue is on Jaguar's. I know it's most likely a futile undertaking on my part, but I am hopelessly optimistic. Thank you again for your reply I honestly do appreciate you.

 

I think it's related to it's not just an on/off on Jaguar. It's because of the encryption. Also rarely discussed the Jag system also involves other modules in the can bus check system including the CCM.

 

Why of why would you want to do it? It tends to work well. Live with it

 

Rujulian12, like Dell is explaining, this is not a single module "tweak". You have to get into a few modules, change the programming, delete/bypass the starting circuits protective functions, etc. Besides, to the best of my knowledge, Jaguar has never released the interior workings of their modules to the general public (if so, I would love a copy, I do electronic repair). Short of what the jaguar system does is it picks up a signal from the transponder which is then sent with the start command to the PATS module, this checks the code and then sends it up to the instrument cluster which again checks the code and then sends the start command on to the ECU. The ECU then looks at the code to determine if it is a valid code. If it is a valid code, the ECU starts up normally. If the code is not valid, it still sends a signal to the starter to rolll the engine, but it will not send the pulses to the fuel injectors to admit fuel. This is not a simple ON/OFF signal. each fuel injector gets a timed pulse of varying length to get the car to start. So, as you can see, not a simple "jumper from here to there and tada, done".

Now, with this being said, I am assuming you probably do not want to spend a ton of money on replacement keys because you have a tendency to lose them or have a lot of friends/family that use the car and this gives a reason for bypassing the system. The only "hack" that I have heard that works is you have to take a programmed key and disassemble it to pull out the grain of rice bulb that is in the key. This is the transponder that the car needs to see to start the car. You then end up taking that glass bulb and opening up the steering column. There you tape the glass bulb to the transponder that is around where you install the key into the steering column. With the glass bulb there, when you insert a key and turn the ignition to the ON position, the transponder is going to ask for a code and the glass bulb is going to reply back with the code, regardless of what key is in the ignition.

 

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Default PCB Layup Design: Advantages of Multilayer PCBIn summary, multilayer PCB designs provide significant advantages for the performance and reliability of electronic devices. It not only improves circuit density and signal integrity, but also reduces signal interference and thermal problems, making it one of the indispensable technologies in modern electronics. for more information, please check the detailed link
https://www.01pcb.com/info-detail/pc...multilayer-pcb