Headlamp Bulb: Testing and Inspection

Headlight Bulb

INSPECTION

1. HALOGEN TYPE

CAUTION:
- Do not perform work with wet hands.
- Because the halogen bulb operates at a high temperature, dirt and oil on the bulb surface reduces the bulb s service life. Hold the flange portion when replacing the bulb. Never touch the glass portion.
- Do not leave the headlight without a bulb for a long time. Dust, moisture, etc. entering the headlight may affect its performance.

1. Visually check the bulb for blow out.
2. Check the bulb specification.
3. Replace the bulb if it is found defective.

2. HID TYPE

WARNING: Because the headlight system uses high voltage, be careful not to perform work with wet hands. There is a possibility of electrical shock.

CAUTION:
- When lit (lighting switch is ON), do not touch the harness, light internals, or metal parts of the light.
- When performing a lighting test, make sure that the headlight is mounted on the vehicle, and the power supply is connected to the connector on the vehicle s side.

1. Check the bulb specification.
2. Install the factory HID bulb to check whether it lights properly.
3. If it does not light properly, replace with a new bulb.
4. Inspect the HID ballast.
Inspect the ballast in the following manner, and determine whether or not to reuse.

1. Perform cold starts (light the headlight after turning off for 10 minutes or more), and hot starts (light the headlight for 15 minutes or more, then turn off for 1 minute and relight) several times, to make sure that the headlight lights properly.
2. Monitor the lighting condition right after a cold start up to a stable state (approx. 5 min.), to see if there are any unstable conditions such as flickering.
3. Install bulbs with the same number of operating hours on both headlights, and light for approximately 30 minutes. Check for whether there is a difference in brightness on the right and left sides.

5. Replace the ballast if it is found defective.