Mazda 6. Manual - part 82

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U

U

HEATER AND AIR CONDITIONER SYSTEMS

OUTLINE ................................................................U-2

ABBREVIATION...................................................U-2
OUTLINE OF CONSTRUCTION..........................U-2
FEATURES ..........................................................U-2
SPECIFICATIONS ...............................................U-2

BASIC SYSTEM .....................................................U-6

BASIC SYSTEM...................................................U-6
AIR FILTER..........................................................U-7
A/C UNIT..............................................................U-7
CONDENSER ....................................................U-10
REFRIGERANT LINES ......................................U-10

CONTROL SYSTEM.............................................U-11

CONTROL SYSTEM..........................................U-11
CLIMATE CONTROL UNIT................................U-13
MANUAL AIR CONDITIONER CONTROL 

SYSTEM .........................................................U-15

FULL-AUTO AIR CONDITIONER CONTROL 

SYSTEM .........................................................U-19

AIRFLOW TEMPERATURE CONTROL ............U-23
AIRFLOW VOLUME CONTROL ........................U-26
AIRFLOW MODE CONTROL ............................U-29
AIR INTAKE CONTROL.....................................U-31
A/C COMPRESSOR CONTROL........................U-32
SENSOR FAIL-SAFE FUNCTION .....................U-35
SENSOR SIGNAL DELAY FUNCTION .............U-35
ON-BOARD DIAGNOSTIC FUNCTION.............U-36

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OUTLINE 

ABBREVIATION

A6E850201038T04

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OUTLINE OF CONSTRUCTION

A6E850201038T01

•

The construction and operation of the air conditioner system is essentially carried over from that of the previous 
PREMACY (CP) model, except for the following features. (See PREMACY Training Manual 3336-1*-99C.) 
(See PREMACY Training Manual 3351-1A-01A.)

End Of Sie

FEATURES

A6E850201038T02

Improved air Conditioning Performance

•

A sub-cooling system integrating the condenser and receiver/drier has been adopted to facilitate evaporator 
operation. This system also reduces the number of parts and the amount of refrigerant.

Improved Visibility

•

To improve windshield and front door glass defogging, the climate control unit is designed to automatically turn 
the air intake mode to FRESH when the airflow mode selector dial is turned to DEFROSTER position.

Reduce Weight

•

The A/C unit integrating the cooling unit and heater unit has been adopted to reduce weight.

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SPECIFICATIONS

A6E850201038T03

Manual Air Conditioner

OUTLINE

A/C

Air conditioning

B+

Battery positive voltage

CPU

Central processing unit

HI

High

IAC

Idle air control

IG

Ignition

L.H.D.

Left hand drive

LO

Low

M

Motor

MAX

Maximum

OFF

Switch off

ON

Switch on

PCM

Powertrain control module

REC

Recirculate

R.H.D.

R.H.D.

TNS

Tail number side light

Item

Specification

Heating capacity

(kW {kcal/h})

4.400 {3,784}

Airflow volume
(during heater operation)

Blower motor

(m

3

/h)

310 (L.H.D.)

300 (R.H.D.)

Electricity consumption
(during heater operation)

Blower motor

(W)

184

Cooling capacity

(kW {kcal/h})

4.200 {3,612}

Airflow volume (during air 
conditioner operation)

Blower motor

(m

3

/h)

460

Electricity consumption 
(during air conditioner 
operation)

Blower motor

(W)

225

Magnetic clutch

(W)

46

Fan type

Blower motor

Sirocco fan

Refrigerant

Type

R-134a

Regular amount 
(approximate quantity)

470 {16.6} (L.H.D.)

430 {15.2} (R.H.D.)

(g {oz})

OUTLINE 

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A/C compressor

Type

Vane-rotary

Discharge capacity 

120 {120, 4.06}

(ml {cc, fl oz})

Max. allowable speed

6,400

(rpm)

Lube 
oil

Type

ATMOS GU10

Sealed volume
(approximate quantity)

120 {120, 4.06}

(ml {cc, fl oz})

Magnetic clutch clearance

0.3—0.5 {0.012—0.019}

(mm {in})

Condenser

Type

Multiflow (sub-cooling type)

Radiated heat

(kW {kcal/h})

4.69 {4,030}: European (L.H.D.) specs.

5.96 {5,130}: European (U.K.), GCC specs.

Receiver/drier 
capacity

(ml {cc, fl oz})

190 {190, 6.42}

Desiccant

Synthetic zeolite

Expansion valve

Type

Block type

Evaporator

Type

Double-tank drawn cup

Refrigerant pressure 
switch

Type

Dual-pressure: General area

Operating pressure

(MPa {kgf/cm

2

, psi})

Type

Triple-pressure: L3 engine, intensely hot area

Operating pressure

(MPa {kgf/cm

2

, psi})

Item

Specification

U–4

OUTLINE 

Full-auto Air Conditioner

Thermal protector

Type

Bimetallic (Indirect sensing type)

Operating temperature

(

°

C {

°

F})

Temperature control

Reheat full air mix type

Item

Specification

Heating capacity

(kW {kcal/h})

4.400 {3,784}

Airflow volume
(during heater operation)

Blower motor

(m

3

/h)

310 (L.H.D.)

300 (R.H.D.)

Electricity consumption
(during heater operation)

Blower motor

(W)

184

Cooling capacity

(kW {kcal/h})

4.200 {3,612}

Airflow volume (during air 
conditioner operation)

Blower motor

(m

3

/h)

460

Electricity consumption 
(during air conditioner 
operation)

Blower motor

(W)

225

Magnetic clutch

(W)

46

Fan type

Blower motor

Sirocco fan

Refrigerant

Type

R-134a

Regular amount 
(approximate quantity)

470 {16.6} (L.H.D.)

430 {15.2} (R.H.D.)

(g {oz})

A/C compressor

Type

Vane-rotary

Discharge capacity

120 {120, 4.06}

(ml {cc, fl oz})

Max. allowable speed

6,400

(rpm)

Lube 
oil

Type

ATMOS GU10

Sealed volume
(approximate quantity)

120 {120, 4.06}

(ml {cc, fl oz})

Magnetic clutch clearance

0.3—0.5 {0.012—0.019}

(mm {in})

Condenser

Type

Multiflow (sub-cooling type)

Radiated heat

(kW {kcal/h})

4.69 {4,030}: European (L.H.D.) specs.

5.96 {5,130}: European (U.K.), GCC specs.

Receiver/drier 
capacity

(ml {cc, fl oz})

190 {190, 6.42}

Desiccant

Synthetic zeolite

Expansion valve

Type

Block type

Evaporator

Type

Double-tank drawn cup

Item

Specification