Daewoo MATIZ Service Manual page 783

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.
Description and Operation
System Components - Functional
Component Locator . . . . . . . . . . . . . . . . . . . . . . . .
A/C System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Information and Procedures
General Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing the Refrigerant System
Insufficient Cooling "Quick Check"
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure-Temperature Relationship
of R-134a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leak Testing the Refrigerant System
Air Conditioning System Diagnosis
Insufficient Cooling Diagnosis
Symptom Diagnosis . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Test Chart (R-134a System)
Repair Instructions . . . . . . . . . . . . . . . . . . . . . . . .
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . . . . .
General A/C System Service Procedures
O-Ring Replacement
Handling Refrigerant . . . . . . . . . . . . . . . . . . . . . .
Handling of Refrigerant Lines and Fittings
Maintaining Chemical Stability in the
Refrigeration System
Discharging, Adding Oil, Evacuating, and
Charging Procedures for A/C System
DAEWOO M-150 BL2
SECTION 7B
TABLE OF CONTENTS
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7B-11
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7B-13
7B-13
. . . . . . 7B-13
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7B-13
. . . 7B-13
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. . . . . 7B-14
7B-2 Serviceable Components
7B-2 Control Assembly and Control Cables
7B-3 Blower Motor and Cooling Hose
7B-3 Blower Resistor
7B-5 Blower Motor Switch
7B-5 A/C Push Knob
7B-5 Receiver-Dryer and Dual Cut Switch
Receiver-Dryer Bracket
7B-5
Compressor
Condenser
7B-6
A/C High Pressure Pipe Line
7B-7
A/C Low Pressure Pipe Line
7B-8
Evaporator Unit and Drain Hose
7B-8
Unit Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator Core and Expansion Valve
Compressor Overhaul
Specifications
General Specifications
Fastener Tightening Specifications
Special Tools and Equipment
Special Tools Table
Schematic and Routing Diagrams
A/C Diagrams
A/C Airflow (Typical)
A/C System (Typical)
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7B-17
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7B-17
7B-17
7B-17
7B-18
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7B-20
7B-20
7B-21
7B-22
7B-25
7B-26
7B-28
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7B-29
7B-30
7B-30
7B-30
7B-31
7B-31
7B-32
7B-32
7B-33
7B-33