Mazda CX-9 Grand Touring. Manual - part 422

17. Steering wheel (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)  

18. Combination switch (See COMBINATION SWITCH REMOVAL/INSTALLATION .)  

19. Center panel (See CENTER PANEL REMOVAL/INSTALLATION .)  

20. Meter hood (See METER HOOD REMOVAL/INSTALLATION .)  

21. Instrument cluster (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)  

22. Audio unit (See AUDIO UNIT REMOVAL/INSTALLATION .)  

23. Steering shaft (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)  

24. A-pillar trim (See A-PILLAR TRIM REMOVAL/INSTALLATION .)  

25. Side panel (See SIDE PANEL REMOVAL/INSTALLATION .)  

3. Disconnect the front door wiring harness connector (Driver side). (See FRONT DOOR MODULE 

REMOVAL/INSTALLATION .)  

4. Disconnect the dashboard harness connectors.  

5. Remove the brake switch from the brake pedal with the brake switch connector connected. (See BRAKE 

PEDAL REMOVAL/INSTALLATION .)  

6. Remove the selector lever component. (See SELECTOR LEVER COMPONENT 

REMOVAL/INSTALLATION .)  

7. Remove the windshield wiper arm and blade. (See WINDSHIELD WIPER ARM AND BLADE 

REMOVAL/INSTALLATION .)  

8. Remove the cowl grille. (See COWL GRILLE REMOVAL/INSTALLATION .)  

9. Remove the windshield wiper motor. (See WINDSHIELD WIPER MOTOR 

REMOVAL/INSTALLATION .)  

10. Remove the dashboard. (See DASHBOARD REMOVAL/INSTALLATION .)  

11. Remove in the order indicated in the table.  

12. Install in the reverse order of removal. 

Fig. 8: Identifying Front Air Mix Actuator Remove Order - Passenger Side 
Courtesy of MAZDA MOTORS CORP. 

FRONT AIR MIX ACTUATOR INSPECTION

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Control System (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:12:35 AM

Page 6 

© 2005 Mitchell Repair Information Company, LLC. 

DRIVER SIDE 

1. Connect battery positive voltage to front air mix actuator terminal F (or G), connect terminal G (or F) to 

ground, and then verify that the front air mix actuator operates as shown in the table. 



If the operation condition is not normal, replace the front air mix actuator.  

FRONT AIR MIX ACTUATOR OPERATION 

Fig. 9: Front Air Mix Actuator Circuit Diagram - Driver Side 
Courtesy of MAZDA MOTORS CORP. 

Fig. 10: Inspecting Front Air Mix Actuator - Driver Side 
Courtesy of MAZDA MOTORS CORP. 

2. Verify that the resistance between terminals A and E, and E and C matches the front air mix actuator 

operation as shown in the graph. 



If the operation condition and resistance are not normal, replace the front air mix actuator. 

Terminal

Front air mix actuator operation

F

G

B+

Ground

HOT --> COLD

Ground

B+

COLD --> HOT

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Control System (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:12:35 AM

Page 7 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 11: Front Air Mix Actuator Operation Terminals A & E With E & C Resistance Graph - 
Driver Side 
Courtesy of MAZDA MOTORS CORP. 

PASSENGER SIDE 

1. Connect battery positive voltage to front air mix actuator terminal F (or G), connect terminal G (or F) to 

ground, and then verify that the front air mix actuator operates as shown in the table. 



If the operation condition is not normal, replace the front air mix actuator.  

FRONT AIR MIX ACTUATOR OPERATION 

Fig. 12: Front Air Mix Actuator Circuit Diagram - Passenger Side 
Courtesy of MAZDA MOTORS CORP.

Terminal

Front air mix actuator operation

F

G

B+

Ground

COLD --> HOT

Ground

B+

HOT --> COLD

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Control System (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:12:35 AM

Page 8 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 13: Inspecting Front Air Mix Actuator - Passenger Side 
Courtesy of MAZDA MOTORS CORP. 

2. Verify that the resistance between terminals A and E, and E and C matches the front air mix actuator 

operation as shown in the graph. 



If the operation condition and resistance are not normal, replace the front air mix actuator. 

Fig. 14: Front Air Mix Actuator Operation Terminals A & E With E & C Resistance Graph - 
Passenger Side 
Courtesy of MAZDA MOTORS CORP. 

REAR AIR MIX ACTUATOR REMOVAL/INSTALLATION 

1. Slide the passenger-side front seat to the maximum forward end.  

2. Disconnect the negative battery cable.  

3. Remove the following parts: 

1. Decoration panel (See DECORATION PANEL REMOVAL/INSTALLATION .)  

2. Front console box mat (See FRONT CONSOLE BOX MAT REMOVAL/INSTALLATION .)  

3. Indicator panel (See INDICATOR PANEL REMOVAL/INSTALLATION .)  

4. Front console box (See FRONT CONSOLE BOX REMOVAL/INSTALLATION .)  

5. Dashboard under cover (See DASHBOARD UNDER COVER REMOVAL/INSTALLATION .) 

6. Side wall (See SIDE WALL REMOVAL/INSTALLATION .)  

7. Console panel (See CONSOLE PANEL REMOVAL/INSTALLATION .)  

 

2008 Mazda CX-9 Grand Touring 

2008 HVAC Control System (HVAC) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:12:35 AM

Page 9 

© 2005 Mitchell Repair Information Company, LLC.