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: Windshield installation
Caution
To prevent the sealant from cracking or the glass from being
pushed out by air pressure if a door is closed, open all of the windows and
leave them open until the sealant has hardened.
1. Cut away the old sealant using a razor so that 1-2 mm {0.04-0.07 in}
thickness of sealant ...
Mazda 6 Service Manual: Clutch fluid replacement
Caution
Be careful not to spill clutch fluid on a painted surface. If this
should happen, wash it off immediately.
Note
Do not mix different brands of clutch fluid.
Do not reuse the clutch fluid that was drained out.
1. Remove the under cover.
2. Draw the fluid from the reservoir ...