Sorry I only know how to do this on EA's, not too sure if EF's are the same.
Near the master cylinder in the engine bay is a single wire ( pink and white from memory but will check ) that you have to earth out. I made up a lead with 3mm autocable, stripped each end, crimped a blade terminal on one end and an alligator clip on the other. Plug the blade terminal into the existing plug under the master cylinder and clip the alligator onto one of the strut tower bolts. Start the car and leave it idle...the revs will automatically increase for about 20 seconds. When the revs settle it is now in self test mode.
Id say someone on here knows how to put the EF into self test
Lets go find that Hotdog tree I planted
Lowered EF Futura
Black Steelies ( too cheap to buy proper mags )