Test B: The Horn Is Always On

PINPOINT TEST B: THE HORN IS ALWAYS ON

B1-B4:

B5-B6:

Normal Operation
The horn relay B+ power is supplied through circuit 1682 (RD/LB). The horn relay is controlled by the horn switch. The horn relay is grounded through the horn switch by circuit 6 (YE/LG). When the horn switch is pressed, the horn relay control circuit 6 (YE/LG) is grounded through circuit 57 (BK). The relay is then closed causing B+ voltage to be applied to circuit 1 (DB), sounding the horns. The smart junction box (SJB) can also supply a ground for the horn relay coil.

Possible Causes
- circuit 1 (DB) short to voltage
- circuit 6 (YE/LG) short to ground
- horn relay
- clockspring
- horn switch
- horn switch harness
- SJB