Mazda CX-9 Grand Touring 2009 Manual page 1683

If the operation condition is not normal, replace the air intake actuator.
AIR INTAKE ACTUATOR OPERATION
Terminal
A C G
Ground - B+ RECIRCULATE --> FRESH
- Ground B+ FRESH --> RECIRCULATE
Fig. 5: Inspecting Air Intake Actuator
Courtesy of MAZDA MOTORS CORP.
Fig. 6: Air Intake Actuator Circuit Diagram
Courtesy of MAZDA MOTORS CORP.
FRONT AIR MIX ACTUATOR REMOVAL/INSTALLATION
DRIVER SIDE
1. Disconnect the negative battery cable.
2. Remove the following parts:
1. Dashboard under cover (Driver side) (See DASHBOARD UNDER COVER
REMOVAL/INSTALLATION .)
2. Side wall (See SIDE WALL REMOVAL/INSTALLATION .)
2008 Mazda CX-9 Grand Touring
2008 HVAC Control System (HVAC) - Mazda CX-9
Air intake actuator operation