1. Remove the clamps and vacuum hose.
2. Apply both suction and pressure to the engine-side hose, and verify that air blows only toward that side.

Air bleeding
Brake pedal inspectionMazda 6 Service Manual: Idle air control (iac) valve inspection
Note
Perform the following inspection only when directed.
Operation Test
Carry out the Idle Air Control Inspection. (See Idle Air Control System
Inspection.)
If not as specified, perform the further inspection for the IAC valve.
Resistance Inspection
1. Disconnect the negative batt ...
Mazda 6 Service Manual: Remote handle lever removal/installation
4SD
1. To remove the remote wire, remove the trunk side trim.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
5HB
1. To remove the remote wire, remove the trunk side upper trim and trunk side
trim.
2. Remove in the order indicated in the table.
...