Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
To diagnose the B2752 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The vehicle horn is activated whenever the ground is applied to the horn relay coil through the horn relay control circuit. The ground may be applied by either of the following: The Body Control Module (BCM) and the horn switch. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground in the horn relay control circuit for approximately 300 milliseconds.
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