Test Description

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The numbers below refer to the step numbers on the diagnostic table.

2. Listen for an audible click when the horn relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
3. Tests for voltage at the coil side of the horn relay. The HORN fuse supplies power to the coil side of the horn relay.
4. Verifies that the body control module (BCM) is providing ground to the horn relay.
5. Tests if ground is constantly being applied to the horn relay.

Fig 1: DTC B2752 - Diagnostic System Check (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B2752 - Diagnostic System Check (2 Of 2)

Courtesy of GENERAL MOTORS CORP.