Headlamp Bulb: Testing and Inspection

Headlight Bulb

INSPECTION

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

2. HID TYPE

CAUTION:
- Do not work 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 that the power supply is connected to the connector on the vehicle side.

1. Check the bulb specification. Specifications
2. Install a SUBARU genuine HID bulb to test whether it lights properly.
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 whether or not it can be reused.

1. Perform the cold start (turning on the lights after the headlights have been off for 10 minutes or more) and hot start (turning on the headlights for 15 minutes or more -> turning off the lights for one minute -> turning on the lights again) several times and check if the headlights illuminate properly.
2. Check the lighting condition immediately after the cold start until stable (approx. 5 min.), to make sure that an unstable condition (flicker etc.) does not occur.
3. Attach two bulbs with equal amounts of operating hours to the right and left headlights, and light the headlights for approx. 30 minutes. Check to make sure that there is no difference in brightness between the right and left headlights.

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