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: Transaxle Ranges
The shift position indicator light in the instrument cluster illuminates.
The selector lever must be in P or N to operate the starter.
P (Park)
P locks the transaxle and prevents the front wheels from rotating.
WARNING
Always set the selector lever to P and set the parking brake:
Only s ...
Mazda 6 Service Manual: Side air bag module removal/installation
Warning
Handling the air bag module improperly can accidentally deploy the
air bag module, which may seriously injure you. Read AIR BAG SYSTEM SERVICE
WARNINGS before handling the air bag module. (See SERVICE WARNINGS.)
Warning
If the side air bag module is installed with debris in ...