Another way is to listen very carefully to the switch as we have had loads of them go , see if you can hear it "click" as the microswitch works , but we have also had the window regs go aswell , easy way is pull the switch out and get multimeter accross connections and see if you get continuity , can sort you a diagram out if you like , but sure it will be on here somewhere , then if switch is ok check regulator by bridging straight over the wiring block , at least that way you do not need to take door trim off .