there should be 2 wires coming out of the pressure switch plug.. one does go to a ground and the other is routed to D6, if you would like to test your VTEC solenoid you could take a wire and touch the wire for the vtec solenoild and take the other end and touch it to the battery and if it clicks your Vtec solenoid is good, if it doesn't then it's bad and you may need another one.