1. Remove the VAD check valve (one-way). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION)
2. Blow through A and verify that air flows from B.
3. Blow through B and verify that air does not flow from A.

Variable air duct (vad) control solenoid valve inspection (l3)
Idle air control (iac) valve inspectionMazda 6 Service Manual: Emission Control System
This vehicle is equipped with an emission control system (the catalytic converter
is part of this system) that enables the vehicle to comply with existing exhaust
emissions requirements.
WARNING
Never park over or near anything flammable: Parking over or near
anything flammable, such as dry ...
Mazda 6 Service Manual: Steering gear and linkage assembly
Caution
Place copper plates, rag, or similar material in a vise, when
secure the mounting bracket portion of the steering gear.
Assemble in the order indicated in the table.
Mounting Rubber Assembly Note
1. Apply soapy water to the rubber part of the mounting rubber.
2. Press the ...