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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, 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 A: The Wipers Are Inoperative >> Normal Operation

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.

When the ignition switch is in the RUN or ACCESSORY position, voltage is supplied to the wiper relay coil through circuit CBP45 (YE). The wiper relay coil is grounded at all times through circuit GD129 (BK/YE). Voltage is supplied to the wiper relay switch through circuit SBB09 (RD). When the wiper relay is activated, voltage is supplied to the wiper motor through circuit CRW03 (VT/WH) and through CBP45 (YE) when the ignition switch is in the RUN or ACCESSORY position. The wiper motor is grounded through circuits GD129 (BK/YE) and GD123 (BK/GY). The multifunction switch is grounded through circuit GD116 (BK/VT). The multifunction switch sends open and ground input signals to the wiper motor through circuits CRW17 (GN/VT), CRW18 (VT/WH), CRW19 (BU/OG) and CRW08 (VT/OG) in order to activate the wiper motor to the requested modes.

This pinpoint test is intended to diagnose the following: 

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