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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Lighting Systems) >> Diagnostic Information and Procedures >> Cornering Lamps Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Battery voltage is applied at all times to both front cornering lamp PCB relays which are an internal part of the underhood fuse block. When the turn signal switch is activated, ground is applied through the turn signal switch signal circuit to the body control module (BCM) The BCM then applies a ground to the appropriate cornering lamp relay control circuit energizing the relay. With the relay energized, battery voltage is applied through the switch side of the relay, the LT or RT CRN LAMP Fuse, and the cornering lamp supply voltage circuit to the cornering lamp.

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