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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 175 (Exterior Lighting System) >> Diagnosis And Testing >> Headlamps >> Pinpoint Tests >> Pinpoint Test C: One Low Beam Headlamp Is Inoperative >> Normal Operation - High Intensity Discharge (HID) Low Beams

Normal Operation - High Intensity Discharge (HID) Low Beams

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

When the smart junction box (SJB) receives input to turn the low beam headlamps on, the SJB provides voltage to the LH ballast through circuit 1338 (WH) and the RH ballast through circuit 1336 (LG/WH). Constant voltage is supplied by the battery junction box (BJB) to the LH ballast through circuit 1724 (WH/LG) and the RH ballast through circuit 1779 (DB/LG). Ground for the ballasts is provided through circuit 1205 (BK).

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