Windshield motor only work on high speed

Tiny
XJSHEN
  • MEMBER
  • 2003 PONTIAC MONTANA
  • 3.4L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 85,000 MILES
My windshield motor only work on high speed. Multiple function switch workS on washer motor, L and R turn signal switches. How do you know the windshield motor is bad or relay bad or wire circuit bad, etc? And how to set for the windshield motor wiper arm starter point?
Thanks for your instruction and helps!
I bought new multiple functional switch and going to replace it. I found a repair shop pour oil to multiple functional switch. Does that dysfunction the switch?
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Saturday, November 21st, 2020 AT 2:13 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Did they pour oil in the multi-function switch? That makes no sense and yes it will cause problems.

As far as the motor, if it works on high, the motor is fine.

I attached a pic below for testing. I highlighted three wires. The dark green wire should have power when you select the delayed setting. The gray will have power at low speed and the purple will have power at high speed.

Use a test light to see if there is power to the motor.

Let me know what you find.

Joe
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Saturday, November 21st, 2020 AT 8:08 PM

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