Test A: The Horn Is Inoperative

PINPOINT TEST A: THE HORN IS INOPERATIVE

A1:

A1-A3:

A4-A5:

A6-A7:

Normal Operation
The battery junction box (BJB) supplies voltage for the horn to the central junction box (CJB) through circuit 30-DA1 (RD). The horn relay receives voltage from the CJB through circuit 30-DA1 (RD). When the horn switch is pressed, a ground is provided to the horn relay through circuit 91S-GJ7 (BK/BU) which energizes the horn relay. Voltage is then sent from the horn relay to the horn(s) through circuit 29S-GJ1 (OG/BU). The horn is grounded through circuit 31-GJ1 (BK).

Possible Causes
- Fuse
- Circuit 29S-GJ1 (OG/BU) open
- Circuit 31-PG30 (BK) open
- Circuit 31-GJ1 (BK) open
- Circuit 91S-GJ7 (BK/BU) open
- Horn switch
- Horn(s)
- Clockspring
- CJB.