00:00how to test the screen wash level sensor screen wash level sensor sits in the bottom of the screen
00:06wash reservoir and it protects the pump from running dry what happens is when you've got
00:11enough screen wash the floor is up in the tank and the floor itself has a magnet on the bottom there
00:16when the floor comes down because the screen wash levels getting low that magnet pulls a contact in
00:22and it closes a circuit that then sends us five volts from the battery round to earth and it
00:28illuminates the screen wash yellow warning light on the dashboard easy way to test it we're going to
00:34test it in an open and closed position so i've got a multimeter i've set it to 200 ohms i've put the
00:40black lead in com and i've put the red lead in ohms what i'm expecting is an open circuit like we've got
00:45on the screen there when the float is up and then i'm expecting a resistance reading when it's down
00:51when the switch is closed so i'll get my red probe onto there it's only two pins so
00:57open circuit the float up
01:010.6 of an ohm resistance when it's closed it's only a very short circuit so it should have very low
01:12resistance hope that makes sense and i'll see you on the next one
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