Central Locking

[johno]

hi

i have a central locking question. my dads H reg 5 doors central locking doesnt work.  when you turn the key in the drivers door, the pumps activates and runs for about 2 mins but nothing unlocks. i read an earlier post that said to listen out to indetify a possible air leak but cant hear any leak.  whats the best way of identifying this apart from listening?  do we need to buy a new system or anything?  thanks

[westysgolf]

1st check the hoses and make sure they're all connected.  also check the door solenoid is working. if not is there power going to it?

[johno]

how do i check if the solenoid is working? is there an easy way to test this?