Do these injectors work in the 'usual' way, no strange trickery going anywhere?

....so the injectors are 'live' (hot) feed by key ignition and are 'grounded' to cycle (inject) by the ECU (PCM)?

many thanks

Yes. You got it.

many thanks

BTW, the voltage on the supply lead is monitored, and the pulse width is adjusted to correct for the solenoid open time change due to voltage, according to the Jaguar training manual.

thanks

And if it fails the cam sensor is suspect.