Horns Fail to Sound

Tests 1 - 3:

Tests 4 - 7:

Tests 8 - 13:

Tests 14 - 17:

SYMPTOM
HORNS FAIL TO SOUND

POSSIBLE CAUSES
- Horn relay
- Body control module internal malfunction
- Open horn switch
- Open horn switch sense circuit
- Clockspring
- Open horn switch sense circuit
- Body control module internal malfunction
- Open fuse # 8
- Junction block - open fused B(+) circuit
- Junction block - open horn relay control circuit
- Horn relay
- Body control module internal malfunction
- Horn relay
- Junction block - open horn relay output circuit
- Open horn relay output circuit
- Open ground circuit
- Open horn(s)