MTC Air Conditioner User Manual (English)

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MTC-1

MANUAL AIR CONDITIONER

J AIR CONDITIONER

CONTENTS

SECTION

MTC

Revision: January 2005 2004 Quest

PRECAUTIONS .......................................................... 5

Precautions for Supplemental Restraint System

(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-

SIONER” .................................................................. 5

Precautions for Working with HFC-134a (R-134a) ..... 5

Contaminated Refrigerant ........................................ 5

General Refrigerant Precautions .............................. 6

Precautions for Leak Detection Dye ......................... 6

A/C Identification Label ............................................ 7

Precautions for Refrigerant Connection ................... 7

FEATURES OF NEW TYPE REFRIGERANT

CONNECTION ...................................................... 7

O-RING AND REFRIGERANT CONNECTION ..... 8

Precautions for Servicing Compressor ....................11

Precautions for Service Equipment .........................11

RECOVERY/RECYCLING EQUIPMENT .............11

ELECTRONIC LEAK DETECTOR .......................11

VACUUM PUMP ................................................. 12

MANIFOLD GAUGE SET .................................... 12

SERVICE HOSES ............................................... 12

SERVICE COUPLERS ........................................ 13

REFRIGERANT WEIGHT SCALE ...................... 13

CHARGING CYLINDER ...................................... 13

Wiring Diagrams and Trouble Diagnosis ................ 13

PREPARATION ......................................................... 14

Special Service Tools ............................................. 14

HFC-134a (R-134a) Service Tools and Equipment ... 14

Commercial Service Tools ...................................... 16

REFRIGERATION SYSTEM ..................................... 18

Refrigerant Cycle ................................................... 18

REFRIGERANT FLOW ....................................... 18

Refrigerant System Protection ............................... 18

REFRIGERANT PRESSURE SENSOR ............. 18

PRESSURE RELIEF VALVE .............................. 19

Component Layout ................................................. 20

FRONT REFRIGERATION SYSTEM .................. 20

REAR REFRIGERATION SYSTEM .................... 21

LUBRICANT .............................................................. 22

Maintenance of Lubricant Quantity in Compressor ... 22

LUBRICANT ........................................................ 22

CHECKING AND ADJUSTING ............................ 22

AIR CONDITIONER CONTROL ...............................24

Description .............................................................. 24

Operation ................................................................ 24

AIR MIX DOOR CONTROL ................................. 24

BLOWER SPEED CONTROL ............................. 24

INTAKE DOORS CONTROL ............................... 24

MODE DOOR CONTROL ................................... 24

DEFROSTER DOOR CONTROL ........................ 24

MAGNET CLUTCH CONTROL ........................... 25

SELF-DIAGNOSTIC SYSTEM ............................ 25

Description of Control System ................................ 26

Control Operation ...................................................26

DISPLAY SCREEN .............................................. 27

TEMPERATURE DIAL (TEMPERATURE CON-

TROL) (FRONT) .................................................. 27

TEMPERATURE DIAL (TEMPERATURE CON-

TROL) (REAR) .................................................... 27

RECIRCULATION () SWITCH ............................. 27

REAR WINDOW DEFOGGER SWITCH ............. 27

OFF DIAL (BLOWER SPEED SET TO 0) ........... 27

A/C SWITCH ....................................................... 27

MODE DIAL .........................................................27

FRONT BLOWER CONTROL DIAL .................... 27

REAR BLOWER CONTROL DIAL ...................... 27

Discharge Air Flow ................................................. 28

FRONT ................................................................ 28

REAR .................................................................. 28

System Description ................................................. 29

SWITCHES AND THEIR CONTROL FUNCTION ... 29

CAN Communication System Description .............. 30

TROUBLE DIAGNOSIS ............................................ 31

CONSULT-II Function (BCM) ................................. 31

CONSULT-II BASIC OPERATION ....................... 31

DATA MONITOR ................................................. 32

How to Perform Trouble Diagnosis for Quick and

Accurate Repair ...................................................... 33

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MTC Air Conditioner Specifications

General

Brand	MTC
Model	Air Conditioner
Category	Air Conditioner
Language	English

Summary

PRECAUTIONS

Precautions for Working with HFC-134a (R-134a)

Guidelines for handling HFC-134a refrigerant and system components.

General Refrigerant Precautions

General safety and handling procedures for refrigerant.

Precautions for Service Equipment

Guidelines for using service equipment like recovery/recycling units.

PREPARATION

Special Service Tools

Lists and illustrates special service tools for AC system.

HFC-134a (R-134a) Service Tools and Equipment

Tools and equipment specific to HFC-134a systems.

REFRIGERATION SYSTEM

Refrigerant Cycle

Explanation of the refrigerant flow and cycle.

Refrigerant System Protection

Protection mechanisms for the refrigerant system.

LUBRICANT

Maintenance of Lubricant Quantity in Compressor

Procedures for maintaining lubricant quantity in the compressor.

AIR CONDITIONER CONTROL

Description

Overview of the AC control system and its functions.

Operation

Details on how the AC control system operates.

SELF-DIAGNOSTIC SYSTEM

Information on the AC system's self-diagnostic capabilities.

TROUBLE DIAGNOSIS

How to Perform Trouble Diagnosis for Quick and Accurate Repair

Workflow for diagnosing and repairing issues.

A/C System Self-diagnosis Function

Procedure for initiating the AC system self-diagnosis.

Operational Check

Procedure for performing operational checks of the AC system.

Mode Door Motor Circuit

Troubleshooting the mode door motor circuit.

CONTROL UNIT

FRONT AIR CONTROL

Removal and installation of the front air control.

AMBIENT SENSOR

Removal and installation of the ambient sensor.

INTAKE SENSOR

Removal and Installation

Procedures for removing and installing the intake sensor.

BLOWER MOTOR

FRONT BLOWER MOTOR

Removal and installation of the front blower motor.

HEATER & COOLING UNIT ASSEMBLY

Front Heater and Cooling Unit Assembly

Procedures for removing and installing the front heater and cooling unit assembly.

MTC Air Conditioner User Manual

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