Daewoo Matiz (2003 year). Manual — part 193

7A – 30 HEATING AND VENTILATION SYSTEM

SPECIAL TOOLS AND EQUIPMENT

SPECIAL TOOLS TABLE

D102B119

DW 100–020

Spring Clamp

Remover/Installer

HEATING AND VENTILATION SYSTEM 7A – 31

SCHEMATIC AND ROUTING DIAGRAMS

NON–A/C DIAGRAMS

D18A201B

7A – 32 HEATING AND VENTILATION SYSTEM

AIR FLOW THROUGH DUCTS (NON–A/C)

(Left–Hand Drive Shown, Right–Hand Drive Similar)

D108A202

SECTION 7B

MANUAL CONTROL HEATING, VENTILATION,

AND AIR CONDITIONING SYSTEM

CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in B unless otherwise
noted.

TABLE OF CONTENTS

Description and Operation

7B-2

. . . . . . . . . . . . . . . . . .

System Components – Functional

7B-2

. . . . . . . . . . .

Component Locator

7B-3

. . . . . . . . . . . . . . . . . . . . . . . .

A/C System

7B-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagnostic Information and Procedures

7B-5

. . . . .

General Diagnosis

7B-5

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Testing the Refrigerant System

7B-5

. . . . . . . . . . . . . .

Insufficient Cooling “Quick Check”

Procedure

7B-5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pressure-Temperature Relationship

of R-134a

7B-6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Leak Testing the Refrigerant System

7B-7

. . . . . . . . .

Air Conditioning System Diagnosis

7B-8

. . . . . . . . . . . . .

Insufficient Cooling Diagnosis

7B-8

. . . . . . . . . . . . . . .

Symptom Diagnosis

7B-11

. . . . . . . . . . . . . . . . . . . . . . . .

Pressure Test Chart (R-134a System)

7B-11

. . . . . . .

Repair Instructions

7B-13

. . . . . . . . . . . . . . . . . . . . . . . .

On-Vehicle Service

7B-13

. . . . . . . . . . . . . . . . . . . . . . . . .

General A/C System Service Procedures

7B-13

. . . . . .

O-Ring Replacement

7B-13

. . . . . . . . . . . . . . . . . . . . .

Handling Refrigerant

7B-13

. . . . . . . . . . . . . . . . . . . . . .

Handling of Refrigerant Lines and Fittings

7B-13

. . .

Maintaining Chemical Stability in the

Refrigeration System

7B-14

. . . . . . . . . . . . . . . . . . .

Discharging, Adding Oil, Evacuating, and

Charging Procedures for A/C System

7B-14

. . . . .

Serviceable Components

7B-17

. . . . . . . . . . . . . . . . . . . .

Control Assembly and Control Cables

7B-17

. . . . . . .

Blower Motor and Cooling Hose

7B-17

. . . . . . . . . . . .

Blower Resistor

7B-17

. . . . . . . . . . . . . . . . . . . . . . . . . .

Blower Motor Switch

7B-17

. . . . . . . . . . . . . . . . . . . . . .

A/C Push Knob

7B-18

. . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver–Dryer and Dual Cut Switch

7B-18

. . . . . . . .

Receiver–Dryer Bracket

7B-20

. . . . . . . . . . . . . . . . . . .

Compressor

7B-20

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Condenser

7B-21

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A/C High Pressure Pipe Line

7B-22

. . . . . . . . . . . . . . .

A/C Low Pressure Pipe Line

7B-25

. . . . . . . . . . . . . . .

Evaporator Unit and Drain Hose

7B-26

. . . . . . . . . . . .

Unit Repair

7B-28

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Evaporator Core and Expansion Valve

7B-28

. . . . . .

Compressor Overhaul

7B-29

. . . . . . . . . . . . . . . . . . . . .

Specifications

7B-30

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Specifications

7B-30

. . . . . . . . . . . . . . . . . . . .

Fastener Tightening Specifications

7B-30

. . . . . . . . . .

Special Tools and Equipment

7B-31

. . . . . . . . . . . . . .

Special Tools Table

7B-31

. . . . . . . . . . . . . . . . . . . . . . .

Schematic and Routing Diagrams

7B-32

. . . . . . . . . .

A/C Diagrams

7B-32

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

A/C Airflow (Typical)

7B-33

. . . . . . . . . . . . . . . . . . . . . .

A/C System (Typical)

7B-33

. . . . . . . . . . . . . . . . . . . . .