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Home >> Ford >> 2012 >> Mustang Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 459 (Wiper System & Washer System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test E: The Washer Pump is Inoperative >> Normal Operation
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Normal Operation

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

During normal operation, the windshield wiper motor receives voltage through Battery Junction Box (BJB) fuse 9 (30A), circuit SBB09 (RD) and through Smart Junction Box (SJB) fuse 45 (5A), circuit CBP45 (YE) when the ignition switch is in the RUN or ACC positions. Ground is provided to the windshield wiper motor through circuits GD129 (BK/YE) and GD123 (BK/GY). The internal run/park and internal high/low relays are contained in the wiper motor electronics. Mode of operation is dependent on the signal(s) received from the multifunction switch. When the correct input is received from the multifunction switch, the windshield wiper motor activates the washer pump by providing power through circuit CRW14 (BU/WH). Ground is provided to the washer pump through circuit GD123 (BK/GY).

This pinpoint test is intended to diagnose the following: 

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