I have a code(P0628) for the SCV system drive error. All of my low pressure fuel lines have been clened, new filters and transfer pump. The SCV solenoid is with in spec.(ohm). I have 10v at the SCV when the key is turned on and loose the voltage in about 3 sec after the key is witched on. I can hear the relay ECM kick out when the power goes away. The machine is a KX057-4R1. Any help would be great full. Thank you