Headlight Auto Leveling System Description (If Equipped) - Suzuki 2006 SX4 Service Manual

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Lighting Systems:

Igniter generates high voltage needed to turn on the discharge headlight. It is charged with high voltage raised by the

ballast and it applies voltage pulse as high as about 20,000V to the tungsten electrode in the discharge headlight bulb.

After the discharge headlights light up, the ballast supplies voltage to bulbs.

Discharge headlight bulb

Discharge headlight bulb is used for the low beam. It does not have a filament but xenon gas (1), mercury (3) and

metal iodide (2) sealed in it. It lights up when its tungsten electrodes (4) apply high voltage to these contents.

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Fail-safe function of discharge headlight

As the ballast has a fail-safe function which stops supply of the voltage to the igniter when it detects any of the

following condition.

• Ignition switch is set to "HEAD" position while igniter is not connected to discharge headlight bulb

• Discharge headlight does not light up even when lighting switch is set to "HEAD" position.

• Ballast detects a short in the circuit between discharge headlight bulb and ballast when lighting switch is at "HEAD"

Headlight Auto Leveling System Description (If Equipped)

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Headlight Auto Leveling System adjusts the optical axis of the headlight automatically to be suitable for the varied

vehicle position while the headlights are lit. It consists of front height sensor (1), rear height sensor (2), headlight

leveling control module (3), headlight leveling actuator (4) and headlight leveling warning light (5).

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