I have a 92 hatch that was non vtec i put in a d15b JDM motor it is running really good but i dont think vtec is working i am also throwing a check engine light on i found out what the code was and it was code 21 vtec spool selanoid will that make vtec not work and also how would i test the selanoid to see if its bad i all ready hook up +and- to the whole vtec unit to see if it clicks and it does what else should i do??