there are 3 of them
either 2 green and one purple or 1 purple and 2 green ones

should be under the passenger side glovebox area by the transmision tunnel on a littl ebrakcet

whats happend is that the pump has pumped up tpp mush pressur einto the system so it needs releasing

it might need a new pressure switch though, in which case, you migh tbe beter off looking for a whole new pump assembly as the fluid tend to corrode the innares and they strip the threads from both the casing and the valve