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Basic System (HVAC): Overview Mazda 3 BL

Automatic HVAC System 7 illustrations ~594 words

Scheme 1

Scheme 1: HVAC BASIC SYSTEM LOCATION INDEX
Scheme 1: HVAC BASIC SYSTEM LOCATION INDEX

Scheme 2

Scheme 2: A/C UNIT REMOVAL/INSTALLATION
Scheme 2: A/C UNIT REMOVAL/INSTALLATION

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7
Scheme 7
  1. Disconnect the negative battery cable.
  2. Discharge the refrigerant. (See «REFRIGERANT CHARGING»(/mazda/3/bl-2008-2011/remont/automatic-hvac-system/#refrigerant-system-hvac__refrigerant-charging) .)
  3. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [LF, L3]».) (See «ENGINE COOLANT REPLACEMENT [L3 WITH TC]».)
  4. Remove the charge air cooler cover. (L3 with TC)
  5. Disconnect from the A/C unit in the order indicated in the table. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts. LF, L3 L3 with TC
  6. 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».)
  7. Remove the A/C unit installation nut from the engine compartment, then remove the A/C unit. CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  8. Remove the rear heat duct (1).
  9. Disconnect the drain hose connected to the A/C unit. (See «DRAIN HOSE INSTALLATION NOTE» ).
  10. Remove the nuts and bolts for installing the dashboard to the body.
  11. Remove the dashboard with A/C unit. (See «DASHBOARD REMOVAL/INSTALLATION».)
  12. Disconnect the air mix wire and airflow mode wire from the A/C unit with the wire clamps installed. (Manual air conditioner) (See «CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER]».) (See «CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER]».)
  13. Disconnect the following connectors: Blower motor connector Power MOS FET connector (Full-auto air conditioner) Evaporator temperature sensor connector Air intake actuator connector Air mix actuator connector (Full-auto air conditioner) Airflow mode actuator connector (Full-auto air conditioner) Resistor connector. (Manual air conditioner)
  14. Remove the heater case. Remove the screws. Pull up tab A in the direction shown by the arrow in the figure and remove it from the A/C unit. Pull up tabs B in the direction shown by the arrow in the figure and remove it from the A/C unit.
  15. Remove the nuts and bolts for installing the A/C unit to the dashboard.
  16. Install in the reverse order of removal.
  17. Inspect for engine coolant leakage. (See «ENGINE COOLANT LEAKAGE INSPECTION [LF, L3]».) (See «ENGINE COOLANT LEAKAGE INSPECTION [L3 WITH TC]».)
  18. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(/mazda/3/bl-2008-2011/remont/automatic-hvac-system/#refrigerant-system-hvac) .)

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