This vehicle has E-Throttle from factory and so does not require any modifications.
The E-Throttle Output pins are Aux 9 & 10 and the EThrottle Relay is Aux Ignition 8. If the EThrottle is found to be operating in the wrong direction this can be rectified by changing the Aux 9 Active State (Electronic Throttle -> E-Throttle 1 -> E-Throttle Setup or by swapping the +ve and -ve pins at the throttle plug.