Mazda CX-9 Grand Touring. Manual — part 436

2008 HVAC

Technical Data (HVAC) - Mazda CX-9

HVAC TECHNICAL DATA

HVAC TECHNICAL DATA

Item

Specification

REFRIGERANT SYSTEM

Refrigerant

Type

R-134a

Regular amount (approx. quantity)

(g {oz})

660-710 {23.3-25.0}

BASIC SYSTEM

A/C
compressor

Lubrication
oil

Type

DENSO OIL8

Sealed volume (approx.
quantity)

(ml {cc, fl
oz})

160(160,5.41}

CONTROL SYSTEM
A/C
compressor

Magnetic clutch clearance

(mm {in})

0.35-0.65 {0.014-

0.025}

2008 Mazda CX-9 Grand Touring

2008 HVAC Technical Data (HVAC) - Mazda CX-9

2008 Mazda CX-9 Grand Touring

2008 HVAC Technical Data (HVAC) - Mazda CX-9

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2008 HVAC

Symptom Troubleshooting (HVAC) - Mazda CX-9

HVAC SYSTEM WIRING DIAGRAM

FRONT

Fig. 1: HVAC System Wiring Diagram - Front
Courtesy of MAZDA MOTORS CORP.

REAR

2008 Mazda CX-9 Grand Touring

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

2008 Mazda CX-9 Grand Touring

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:14:50 AM

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Microsoft

Sunday, November 15, 2009 10:14:55 AM

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Fig. 2: HVAC System Wiring Diagram - Rear
Courtesy of MAZDA MOTORS CORP.

FOREWORD



The areas for inspection (steps) are given according to various circuit malfunctions. Use the following
chart to verify the symptoms of the trouble in order to diagnose the appropriate area.

TROUBLESHOOTING INDEX

TROUBLESHOOTING INDEX

No. TROUBLESHOOTING ITEM

DESCRIPTION

1

Insufficient air (or no air) blown
from front vents



Problem with each vent and/or duct



Front airflow mode does not change when switching front
mode switch.

2

Amount of air blown from front
vents does not change



Malfunction in front blower system



Amount of air blown front vents does not change when
switching front climate control unit t airflow control dial.

3

Air intake mode from front vent
does not change



Malfunction in A/C unit and/or front climate control unit
air intake mode switching system



Air intake mode does not change when switching

2008 Mazda CX-9 Grand Touring

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:14:50 AM

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NO.1 INSUFFICIENT AIR (OR NO AIR) BLOWN FROM FRONT VENTS

NO.1 INSUFFICIENT AIR (OR NO AIR) BLOWN FROM FRONT VENTS DESCRIPTION AND
POSSIBLE CAUSE

REC/FRESH mode.

4

No temperature control with front
climate control unit



Malfunction in A/C unit and/or front climate control unit
air mix system



Temperature does not change when switching front
climate control unit temperature setting dial.

5 Windshield fogged



Malfunction in A/C compressor control system and/or air
intake mode switching system



A/C compressor does not operate while airflow mode is
DEFROSTER or HEAT/DEF modes.



Air intake mode does not change to FRESH while airflow
mode is in DEFROSTER or HEAT/DEF modes.

6

Insufficient air (or no air) from rear
vent



Problem with each rear vent and/or duct



Rear airflow mode does not change when front and/or
rear climate control unit mode switches.

7

Amount of air from rear vent does
not change



Malfunction in rear blower motor system



Amount of air blowing rear vents does not change when
switching front and/or rear climate control unit airflow
volume control dial.

8

Air from front/rear vents not cold
enough



Malfunction in A/C basic system



Magnetic clutch operates but A/C system malfunctions.

9 No cool air from front/rear vents



Malfunction in A/C compressor control system



Magnetic clutch does not operate when the A/C system is
turned ON.

10 Noise while operating A/C system



Problem with A/C basic system installation



Noise from magnetic clutch, A/C compressor, hose or
refrigerant line.

11

Dual A/C control function does not
operate



Malfunction in A/C unit and/or front climate control unit
dual A/C control system



Driver or passenger-side temperature control dial does not
operate individually.

1

Insufficient air (or no air) blown from front vents

DESCRIPTION



Problem with each vent and/or duct



Front airflow mode does not change when switching front mode switch.



Malfunction in front airflow mode actuator

2008 Mazda CX-9 Grand Touring

2008 HVAC Symptom Troubleshooting (HVAC) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:14:50 AM

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© 2005 Mitchell Repair Information Company, LLC.