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: Air intake actuator inspection
1. Connect battery positive voltage to terminal D or F and ground to terminal
F or D of the air intake actuator.
2. Verify that the air intake actuator operates as shown below.
If not as specified, replace the air intake actuator.
...
Mazda 6 Service Manual: Neutral switch inspection
Note
Perform the following inspection only when directed.
Continuity Inspection
1. Disconnect the negative battery cable.
2. Remove the neutral switch.J5 MANUAL TRANSAXLE REMOVAL/INSTALLATION.)
3. Inspect for continuity between the neutral switch terminals using an
ohmmeter.
If the n ...