DTC B2752: Horn Relay Coil Circuit Low (Century & Regal): Description

Vehicle horns are activated whenever ground is applied to horn relay coil through horn relay control circuit. Ground may be applied by either the Body Control Module (BCM) or horn switch. DTC B2752 will set if BCM detects a short to ground or an open in horn relay control circuit for approximately 300 milliseconds. If horn relay control circuit is shorted to ground, horns will remain on at all times. BCM stores DTC B2752 in memory. A current DTC will clear when fault no longer exists and ignition switch is cycled. A history DTC will clear after 100 consecutive ignition cycles without a fault present. A scan tool may be used to clear history and current DTC(s).