Mazda 6 Training Manual page 240

When the ignition switch is at ON and when the flash-to-pass is on:
1. When the headlight switch is turned to the flash-to-pass position, battery voltage from the headlight relay flows
from the headlight switch to the ground, and the headlight relay is turned on.
2. When the headlight relay and TNS relay are on, the headlights (low-beam), parking lights/taillights/license plate
light illuminate. Due to the flow of current (1) in relay A are turned on.
3. When relay A turns on, and the headlights (high-beam) illuminate.
1 Running light unit
2 Relay A
3 Relay B
4 Headlight relay
5 Headlight (low-beam)
6 Headlight (high-beam)
7 Ignition switch
8 TNS relay
9 Parking light/taillight/license plate light
End Of Sie
T–24
EXTERIOR LIGHTING SYSTEM
10 Front fog light relay
11 Front fog light
12 Front and rear fog light switch
13 Illumination light
14 Headlight switch
15 Headlight
16 Flash-to-pass
17 Transistor 1
A6E8112T125