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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 339 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2601: DRL Relay Control Circuit Shorted To Ground >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

The daytime running lights (DRL) relay is controlled by the body control module (BCM). Battery positive voltage is applied to the relay coil at all times. The BCM grounds the DRL relay control circuit in order to turn ON the DRL relay. When the DRL relay control circuit becomes shorted to ground or the DRLs remain illuminated without being commanded on by the BCM, DTC B2601 is set.

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