Control System (HVAC): Overview Mazda 3 BL

Scheme 37

Scheme 38

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Scheme 40

1. Disconnect the negative battery cable.
2. Remove the following parts: Front scuff plate (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION».) Front side trim (See «FRONT SIDE TRIM REMOVAL/INSTALLATION».) Decoration panel (See «DECORATION PANEL REMOVAL/INSTALLATION».) Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION».) Car-navigation unit (See «CAR-NAVIGATION UNIT REMOVAL/INSTALLATION».)
3. Slide the blower case to the position shown in the figure. (L3 with TC)
4. Remove in the order indicated in the table. LF, L3 L3 with TC
5. Install in the reverse order of removal.

Scheme 41

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Scheme 43

1. Connect battery positive voltage to air intake actuator terminal C (or G), connect terminal G (or E) to ground, and then verify that the air intake actuator operates as shown in the table. If the operation condition is not normal, replace the air intake actuator. LF, L3 L3 with TC AIR INTAKE ACTUATOR TERMINALS REFERENCE Terminal Air intake actuator operation C E G B+ - Ground FRESH --> RECIRCULATE - Ground B+ RECIRCULATE --> FRESH

Scheme 44

1. Disconnect the negative battery cable.
2. Remove the following parts: Front doors (See «FRONT DOOR REMOVAL/INSTALLATION».) Front scuff plate (See «FRONT SCUFF PLATE REMOVAL/INSTALLATION».) Front side trim (See «FRONT SIDE TRIM REMOVAL/INSTALLATION».) Decoration panel (See «DECORATION PANEL REMOVAL/INSTALLATION».) Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION».) PJB (See «PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION»(/mazda/3/bl-2008-2011/remont/body-electrical/#control-system-body-accessories).) Car-navigation unit (See «CAR-NAVIGATION UNIT REMOVAL/INSTALLATION».) Side wall (See «SIDE WALL REMOVAL/INSTALLATION».) Ashtray panel Console (See «CONSOLE REMOVAL/INSTALLATION».) Shift lever component (MTX) (See «SHIFT MECHANISM REMOVAL/INSTALLATION [G35M-R]»(/mazda/3/bl-2008-2011/remont/manual-trans/#manual-transaxle-shift-mechanism) «SHIFT MECHANISM REMOVAL/INSTALLATION [A26M-R]»(/mazda/3/bl-2008-2011/remont/manual-trans/#manual-transaxle-shift-mechanism).) Selector lever component (ATX) (See «SELECTOR LEVER COMPONENT REMOVAL/INSTALLATION»(/mazda/3/bl-2008-2011/remont/automatic-trans/#automatic-transaxle-shift-mechanism).) Center panel unit (See «CENTER PANEL UNIT REMOVAL/INSTALLATION».) Hood release lever from the lower panel Lower panel (See «LOWER PANEL REMOVAL/INSTALLATION».) Shower ducts (LH, RH) Driver-side air bag module (See «DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION».) Column cover (See «COLUMN COVER REMOVAL/INSTALLATION».) Meter hood (See «METER HOOD REMOVAL/INSTALLATION».) Instrument cluster (See «INSTRUMENT CLUSTER REMOVAL/INSTALLATION».) Steering shaft (See «STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION».) A-pillar trim (See «A-PILLAR TRIM REMOVAL/INSTALLATION».) Windshield wiper arm and blade (See «WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION».) Cowl grille (See «COWL GRILLE REMOVAL/INSTALLATION»(/mazda/3/bl-2008-2011/remont/exteriorinterior-trim/#exterior-trim).) Cowl panel (See «COWL PANEL REMOVAL/INSTALLATION».) Windshield wiper motor (See «WINDSHIELD WIPER MOTOR REMOVAL/INSTALLATION».)
3. Disconnect the following connectors: Blower motor connector Power MOS FET connector Evaporator temperature sensor connector Air intake actuator connector Air mix actuator connector Airflow mode actuator connector
4. Remove the rear heat duct (1).
5. Remove the heater case. (See «A/C UNIT REMOVAL/INSTALLATION».)
6. Remove the nuts and bolts for installing the dashboard to the body.
7. Slide the dashboard.
8. Remove in the air mix actuator.
9. Install in the reverse order of removal.

See also:
• PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION
• SHIFT MECHANISM REMOVAL/INSTALLATION [G35M-R]
• SELECTOR LEVER COMPONENT REMOVAL/INSTALLATION
• COWL GRILLE REMOVAL/INSTALLATION
• REFRIGERANT CHARGING