1999 Chev Suburban - Multifunction Switch Test

[chibip23]

I am trying to find a way to test the wiper portion of the multifunction switch. I have followed all steps using mitchell 1 and am not able to find a way to test the switch. The wipers park wherever and washers are inoperative.

Before I throw a 200 dollar part on this thing I want to make sure I am correct on diagnostics. Please respond here or email. Thanks

[fortknoxx]

if memory serves me correct, these had issues with the circuit board. usually you can see evidence of burns on it.

[Tim Martin]

Also, I think that the only testing for the switch was an ohms test. This may or may not reveal the problem. I usually also do a voltage test on them when the wiring harness is connected. A wiring schemetic is needed for this.

[steven kiser]

throw a board at it...........

[chibip23]

Thanks for all the help. It did end up being the circuit board.

[steven kiser]

and thanks for posting the fix here..........i'm not accustomed to seeing the fix. a pleasant change for the good.