| SONATA(YF) >2013 > G 2.4 GDI > Body Electrical System > Lighting System>Troubleshooting |

Troubleshooting

1. | The lamp switch inputs can be checked using the GDS.

2. | To check the input value of lamp switch, select option "Body Control Module".

3. | To consult the present input/output value of BCM, "Current DATA". It provides information of BCM input/output conditions of power supply, turn signal/brake lamp, headlamp, door, locks, outside mirror, wiper, auto-light and transmitters etc.

4. | To check the input value of lamp switch in force mode, select option "Actuation Test of smart junction box".

Symptom | Possible cause | Remedy
One lamp does not light (all exterior) | Bulb burned out | Replace bulb
Socket, wiring or ground faulty | Repair if necessary
Stop lamps do not light | Bulb burned out | Replace bulb
Stop lamp fuse (15A) blown | Check for short and replace fuse
Stop lamp switch faulty | Adjust or replace switch
Wiring or ground faulty | Repair if necessary
Stop lamps do not turn off | Stop lamp switch faulty | Repair or replace switch
Instrument lamps do not light (Tail lamps light) | Rheostat faulty | Check rheostat
Wiring or ground faulty | Repair if necessary
Back up lamps do not light | Bulb burned out | Replace bulb
Back up lamp fuse (10A) blown | Check for short and replace fuse
Back up lamp switch (M/T) faulty | Check switch
Transaxle range switch (A/T) faulty | Check switch
Wiring or ground faulty | Repair if necessary
Map lamp does not light | Bulb burned out | Replace bulb
Room lamp fuse (10A) blown | Check for short and replace fuse
Map lamp switch faulty | Check switch
Wiring or ground faulty | Repair if necessary
Luggage room lamp does not light | Bulb burned out | Replace bulb
Trunk lamp fuse (10A) blown | Check for short and replace fuse
Luggage room lamp switch faulty | Check switch
Wiring or ground faulty | Repair if necessary