Low Speed Operation
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
When the wiper switch is in the Low position, voltage is supplied through an internal resistor to the signal circuit. The BCM monitors the windshield wiper switch signal circuit, and energizes the Wiper relay which will operate the windshield wiper motor. The wiper motor will operate at low speed, since the Wiper HI relay is de-energized. Low speed can also be commanded with a scan tool, by commanding Wiper Relay on and off. Refer to Scan Tool Output Controls .