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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 >> Headlamps >> Pinpoint Tests >> Pinpoint Test C: One High Beam Headlamp Is 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.

When a request for the high beams is received by the lighting control module (LCM), the LCM provides voltage through circuits 1337 (VT/YE) and 1335 (YE/WH) to the LH and RH headlamps, respectively. Ground is shared with the low beam headlamps.

This pinpoint test is intended to diagnose the following:

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