What else can I do?

The coil should be easy enough to troubleshoot. Power comes from Fuse 9 10A and through the ASD relay. All injectors, oxygen sensors and the coil receive there power from there. All power wires are labeled as Dark Green / Orange, but the coil shows Dark Green / Black. The coil is grounded by the Black / Gray wire coming from the PCM. If there is power on the DkGrn/Blk wire on the coil with the key on, connect a test light to battery positive and see if you are getting pulsed ground signals from the Blk/Gry wire on the coil from the PCM. If you are not getting a ground, check the wire for breaks or check for the signal at the computer. If still no signal exists, check your inputs (ie. crank and cam sensors). All sensors (throttle position, cam, crank, temp, speed sensor) have a Black/Light Blue wire for ground which is shared by them all. The cam, crank and speed sensor share a 5v line with a red or orange wire.