Headlamp Bulb: Testing and Inspection

Headlight Bulb

INSPECTION

1. HALOGEN TYPE
1. Visually check the bulb for blow out.
2. Check the bulb specification.
3. If NG, replace the bulb with a new part.

2. HID TYPE

CAUTION:
- Do not operate with wet hands.
- Do not touch the harness, inner headlight, or any metallic portion of the headlight when the light is illuminated (when the lighting switch is turned on).
- 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 a specified HID bulb for headlight lighting test.
3. If the headlight does not illuminate, replace the bulb with a new part.
4. Check the HID ballast.
Check the ballast in the following methods and judge if it can be reused or not.
1. Perform the cold start (turning on the lights after the headlights is gone off for more than 10 minutes) and hot start (turning on the headlights for more than 15 minutes --> turning off the lights for one minute --> turning on the lights again) several times and check if the headlights are lit surely.
2. Check the lighting condition from immediately after the cold start until the stable condition (approx. 5 min.), to make sure that the unstable condition (flicker etc.) does not occur.
3. Attach the two bulbs having been used for the same period of time to the right and left headlights and keep the headlights for approx. 30 minutes lit. Check the difference of brightness between right and left headlights.

5. If NG, replace the ballast with a new part.