I have a 93 series1 400 with a rear passenger window that will not work. it is closed and wont go down. If i operate the rear door switch or the master on the drivers door i can hear a click from the motor so i know that there is power at the door. The window motor has been changed and so has the switch on the rear door. Is this likley to be the master swich at fault, i await someone more experianced in all things lexus than me.

 

take the panel off, get to the motor and leave it all hooked up, get a test light or vom and hit the switch to see if there is power to the motor, if there is then take the motor off and leave the power connector hooked up...with the motor off hit the switch and see if the motor works and the gear spins, if it does u have something wrong with the regulator, if it doesnt then its the motor