Move the float to the topmost and bottommost positions, and verify that the resistance between terminals A and B of the unit and the position of the float are as indicated in the figure.

Pid/data monitor and record procedure
Oil pressure switch inspectionMazda 6 Service Manual: To Temporarily Cancel
To temporarily cancel the system, use one of these methods:
Slightly depress the brake pedal.
(Manual transaxle) Depress the clutch pedal.
Press the OFF/CANCEL switch.
If the RESUME/ switch is
pressed when the vehicle speed is 25 km/h (16 mph) or higher, the system reverts
to the prev ...
Mazda 6 Service Manual: Discharge headlight control unit removal/installation
Caution
Incorrect servicing of the discharge headlight control unit could
result in electrical shock. Before servicing the discharge headlight control
unit, always refer to the Discharge headlight service warnings. (See
DISCHARGE HEADLIGHT SERVICE WARNINGS)
When replacing the discharg ...