Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. Tests for voltage at the coil side of the horn relay. The HORN fuse supplies power to the coil side of the horn relay.
2. Tests if ground is constantly being applied to the horn relay.

Fig 1: DTC 007 Diagnostic Table (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC 007 Diagnostic Table (2 Of 2)

Courtesy of GENERAL MOTORS CORP.