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Mazda CX-5 Service & Repair Manual: Discharge Headlight System

Outline

Structural View


System Wiring Diagram


Operation

1. When the light switch is operated to the HEAD position, a light switch LO signal is input to the start stop unit.

2. The start stop unit sends the light switch LO signal to the front body control module (FBCM) as a CAN signal.

3. When the front body control module (FBCM) receives the light switch LO signal, it turns the headlight LO relay on.

4. When the headlight LO relay turns on, the igniter raises the DC voltage from the battery to approx. 25,000 V and outputs it to the discharge headlight bulb so that the xenon gas emits light.

5. When the discharge headlight bulb (xenon gas) emits light, the discharge headlight control module converts the DC voltage from the battery to AC voltage (approx. 42 V) and outputs it to the discharge headlight bulb to illuminate the bulb.


Discharge Headlight Service Warnings
Discharge Headlight Service Warnings When replacing a discharge headlight bulb, performing the servicing with the negative battery cable connected or in a wet work area could result in elect ...

Discharge Headlight System Inspection
WARNING: Incorrect servicing of the discharge headlights could result in electrical shock. Before servicing the discharge headlights, always refer to the service warnings.. Termina ...

Other materials:

Air Bag System Service Warnings [Standard Deployment Control System]
Air Bag Module Inspection Inspecting an air bag module using a tester can operate (deploy) the air bag module, which may cause serious injury. Do not use a tester to inspect an air bag module. Always use the on-board diagnostic function to diagnose the air bag module for malfunctions ...

Warning Sound is Activated
Lights-On Reminder If lights are on and the ignition is switched to ACC or the ignition is switched off, a continuous beep sound will be heard when the driver's door is opened. NOTE • When the ignition is switched to ACC, the “Ignition Not Switched Off (STOP) Warning Beep”  ove ...

Oil Cooler Removal/Installation
WARNING: Hot engines and engine oil can cause severe burns. Turn off the engine and wait until it and the engine oil have cooled. A vehicle that is lifted but not securely supported on safety stands is dangerous. It can slip or fall, causing death or serious injury. Never work ...

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