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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 31 (Exterior Lighting System) >> Diagnostic Tests >> Headlamps >> Pinpoint Tests >> Pinpoint Test E: One High Beam Headlamp Is Inoperative >> Normal Operation

Normal Operation

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

When the high beam relay is energized, voltage is provided from the bussed electrical center (BEC) through circuits 1337 (VT/YE) and 1335 (YE/WH) to the LH and RH headlamps, respectively.

Vehicles equipped with high intensity discharge (HID) headlamps utilize a shutter within the headlamp assembly to increase the beam pattern.

This pinpoint test is intended to diagnose the following:

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