Symptom Troubleshooting Chart - Horn

SYMPTOM TROUBLESHOOTING CHART - HORN

Problem	Possible Cause	ACTION
No communication with the smart junction box (SJB)	SJB	See MODULE CONTROLLED FUNCTIONS .
The horn is inoperative	Fuse(s) Circuitry Horn Clockspring Horn switch (part of the steering wheel) Smart junction box (SJB)	See PINPOINT TEST 1: HORN IS INOPERATIVE .
The horn is always on	Circuitry Clockspring Horn switch (part of the steering wheel) Smart junction box (SJB)	See PINPOINT TEST 2: HORN IS ALWAYS ON .
DTC B1217 - horn relay coil circuit failure and DTC B1218 - horn relay coil circuit short to battery (vehicles equipped with remote keyless entry [RKE])	Horn RKE transmitter Smart junction box (SJB)	See PINPOINT TEST 3: DTC B1217 - HORN RELAY COIL CIRCUIT FAILURE AND DTC B1218 - HORN RELAY CIRCUIT SHORT TO BATTERY (VEHICLES EQUIPPED WITH REMOTE KEYLESS ENTRY [RKE]) .