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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Exterior Lighting System) >> Diagnostic Tests >> Public Safety - Police Package >> Pinpoint Tests >> Pinpoint Test Y: The Alternating Flashing Headlamps Are Inoperative >> Normal Operation

Normal Operation

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

The wig-wag module provides voltage to the LH and RH high beams by splicing into circuits 1337 (VT/YE) and 1335 (YE/WH), respectively. Voltage for the wig-wag module is supplied through circuit 7 (LG/YE). Ground for the wig-wag module is supplied through circuit 57 (BK). When the wig-wag module is active, a ground signal is provided to the driver door module (DDM) through circuit 165 (TN/WH). When the DDM detects the wig-wag module is active, a message is sent over the communication network to the lighting control module (LCM) to disable the manual control of the high beams.

This pinpoint test is intended to diagnose the following:

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