Kia Optima Hybrid: Lighting System / Troubleshooting

1
The lamp switch inputs can be checked using GDS.
2
To check the headlamp switch input value, select the "Body Control Module" option.
3
To view the BCM input/output current data, select "Current Data". Provides information on the BCM input/output states: power, turn signal/stop lamp, headlamp, door, locks, outside mirror, wiper, auto light and transmitters, etc.
4
To check the lamp switch input value in forced mode, select the "Actuation Test" option.

Symptom	Possible Cause	Remedy
One lamp does not illuminate (all exterior)	Bulb burned out	Replace the bulb.
One lamp does not illuminate (all exterior)	Socket, wiring or ground is faulty	Repair as necessary.
Stop lamps do not illuminate	Bulb burned out	Replace the bulb.
	Stop lamp fuse blown (15 A)	Check for a short circuit and replace the fuse.
	Stop lamp switch faulty	Adjust or replace the switch
	Faulty wiring or ground	Repair as necessary.
Stop lamps do not turn off	Stop lamp switch faulty	Repair or replace the switch
Instrument panel lamps do not illuminate (Tail lamps illuminate)	Rheostat is faulty	Inspect the rheostat
	Faulty wiring or ground	Repair as necessary.
Back-up lamps do not illuminate	Bulb burned out	Replace the bulb.
	Back-up lamp fuse blown (10A)	Check for a short circuit and replace the fuse.
	Back-up lamp switch (M/T) is faulty	Check the switch.
	Transmission range switch (A/T) is faulty	Check the switch.
	Faulty wiring or ground	Repair as necessary.
Map lamp does not illuminate	Bulb burned out	Replace the bulb.
	Interior lamp fuse blown (10A)	Check for a short circuit and replace the fuse.
	Map lamp switch is faulty	Check the switch.
	Faulty wiring or ground	Repair as necessary.
Luggage compartment lamp does not turn on	Bulb burned out	Replace the bulb.
	Luggage compartment lamp fuse blown (10A)	Check for a short circuit and replace the fuse.
	Luggage compartment lamp switch malfunction	Check the switch.
	Faulty wiring or ground	Repair as necessary.

Troubleshooting