Mazda 3 since 2003
1. Operation and maintenance of the car
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
7.1. General information
7.2. System of power supply
7.3. System of lighting
7.3.1. The forward combined lamp
7.3.1.1. Main characteristics
7.3.1.2. Gas-discharge headlight
7.3.1.3. Design and work of a gas-discharge headlight
7.3.1.4. Function of detection of malfunctions
7.3.1.5. System of automatic alignment of headlights
7.3.1.6. Work at change of loading of the car
7.3.1.7. Work at the movement of the car
7.3.1.8. A control system of lighting at the movement of the car
7.3.2. The back combined lamp and the internal combined lamp
7.3.3. Removal and installation of the forward combined headlight
7.3.4. Adjustment of light of headlights
7.3.5. Removal and installation of a lamp of a headlight
7.3.6. Removal and installation of a gas-discharge lamp of a headlight
7.3.7. Removal and installation of a lamp of a parking lamp
7.3.8. Removal and installation of the forward index of turn
7.3.9. Removal and installation of the side index of turn
7.3.10. Adjustment of light of a forward fog light
7.3.11. Removal and installation of the back combined lamp
7.3.12. Removal and installation of the internal combined lamp
7.3.13. Removal and installation of a lamp of illumination of registration plate
7.3.14. Removal and installation of an additional signal of braking on a back spoiler
7.3.15. Removal and installation of a forward lamp of illumination of salon
7.3.16. Removal and installation of the trailer switch of a door
7.3.17. Removal and installation of the lighting lamp of an ashtray
7.3.18. Removal and installation of a lamp of illumination of the lock of ignition
7.3.19. Removal and installation of a lamp of illumination of a ware box
7.3.20. Removal and installation of operating lighting switch on the dashboard
7.4. Screen wipers and windscreen washers
7.5. Immobilizer
7.6. Checks of electric equipment
7.7. Tables
8. Body
 








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7.3.1.4. Function of detection of malfunctions

Function of detection of power failure on an entrance
If the entrance tension of the control unit of a gas-discharge headlight (9–16 V) is less than norm (except for undervoltage right after inclusion of a headlight), the control unit switches off gas-discharge headlights for protection.
The control unit of a gas-discharge headlight includes headlights again at renewal of giving of normal operational tension.
Function of failure detection on an entrance
At detection of an aberration at the system exit (break or short circuit in a chain of a plait of wires), the control unit switches off gas-discharge headlights.
If the control unit of a gas-discharge headlight worked because of deviations at the exit of system, then headlights remain switched off until the switch of external lighting is not installed in the situation corresponding to inclusion of headlights again.

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7.3.1.3. Design and work of a gas-discharge headlight
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7.3.1.5. System of automatic alignment of headlights