Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
What brand and model scan tool? Does it say it cannot communicate with the vehicle ECM?
OK I have never used that specific tool but it does sound like it may not be compatible with your vehicle. The other possibility is the serial link wire from the data link connector to the ECM is open or shorted. I recommend we try another OBD II tool to confirm that it will also not link to the ECM. Most major parts stores should have one. Other than the factory equipment I have used tools made by Autel and Launch which communicated to the vehicle. Let me know.