Test B: The Horn Is Always On

PINPOINT TEST B: THE HORN IS ALWAYS ON

Normal Operation
The battery junction box (BJB) supplies voltage to the horn relay on the control and switched sides through circuit 460 (YE/LB). When the horn switch is pressed, the horn relay receives the switched ground signal through circuit 1 (DB), energizing the horn relay. The horn switch provides the ground signal through circuit 848 (DG/OG). The horn relay then sends voltage to the horn on circuit 6 (YE/LG), enabling the horn to sound.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Horn relay
- Horn switch (part of the driver air bag module)
- Clockspring
- Vehicle security module (VSM) (if equipped)

B1-B5:

B6: