1992 Blazer Multifunction Switch

[Wags391]

Has anyone gotten into the multifunction switch of a 92 blazer? My wipers are sporadic and the front washer pump won't work. Voltage is only only 10 volts when tested and the pump works with a 12 volt jumper. I can't see how to get to the switch to check it out though.

[MT-2500]

Originally Posted by Wags391

Has anyone gotten into the multifunction switch of a 92 blazer? My wipers are sporadic and the front washer pump won't work. Voltage is only only 10 volts when tested and the pump works with a 12 volt jumper. I can't see how to get to the switch to check it out though.

Test switch wring under dash where they come out of steerig column at the wiring plug in.
You will need a volt/ohm meter.
Some of the switch switching is in ohm's and some voltage and do not forget to test ground.
Good wiring diagrams helps to find which wire is what there.

On sporadic wipers.
There is a lot of problems and some recalls on the wiper circuit board if you have the intermitent wipers.