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Home >> Saturn >> 2007 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1210 (Lighting System) >> Diagnostic Information and Procedures >> DTC B2575 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2010 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Battery positive voltage is applied at all times to both the coil and switch sides of the Low Beam relay located in the underhood fuse block. When the turn signal/multifunction switch is placed in the headlamp position, ground is applied to the body control module (BCM) through the headlamp low beam signal circuit. The BCM then applies ground to the headlamp low beam relay control circuit which energizes the low beam relay. With the low beam relay energized, the switch contacts close allowing battery voltage to flow through the LOW BEAM fuses to the low beam headlamps. Ground for the left headlamp is supplied at G101 and the right headlamp receives ground at G102.