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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1633 (Wiper System & Washer System) >> Diagnostic Tests >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test A: The Wipers are Inoperative - Windshield >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2009 Mercury Sable, 2009 Ford Taurus X, and 2009 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

Under normal operation, when the ignition switch is in the RUN or ACCESSORY position, voltage is supplied to the wiper run/park relay coil through circuit CBP45 (YE). The wiper run/park coil is grounded at all times through circuit GD120 (BK/GN). High current voltage is supplied to the wiper run/park relay through circuit SBB03 (BU/RD). When the wiper run/park relay is activated it supplies voltage to the front windshield wiper motor through circuit CRW03 (VT/WH). The front windshield wiper motor is grounded through circuits GD123 (BK/GY) and GD120 (BK/GN). The multi-function switch is grounded through circuit GD111 (BK/BU). The front windshield wiper motor receives open and ground inputs from the multi-function switch through circuits CRW17 (GN/VT), CRW18 (VT/WH), CRW19 (BU/OG) and CRW08 (VT/OG) to activate the wipers to the appropriate modes.

This pinpoint test is intended to diagnose the following:

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