I have been having a problem with my car giving me code 22 and some times 21. I tested all the wire and the vtec pressure switch everything checks out good when i check to see if the plug going to the pressure switch was putting out the right amount of voltage i noticed that it was onlky putting out 5 volts. From what i saw in the hanes manual it says that there should be 1 volts i even checked it straght off the wire on the ecu can some one help me please?