Jeep Cherokee 2000 - Heating and Air Conditioning

HEATING AND AIR CONDITIONING
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
ACCUMULATOR ..........................2
BLOWER MOTOR .........................2
BLOWER MOTOR RELAY ...................2
BLOWER MOTOR RESISTOR................3
BLOWER MOTOR SWITCH..................3
COMPRESSOR ...........................3
COMPRESSOR CLUTCH....................3
COMPRESSOR CLUTCH RELAY..............4
CONDENSER.............................4
DUAL FUNCTION HIGH PRESSURE SWITCH
(4.0 L) ................................4
EVAPORATOR COIL .......................4
FIXED ORIFICE TUBE......................5
HEATER AND AIR CONDITIONER.............5
HEATER AND AIR CONDITIONER CONTROL ....6
HEATER CORE ...........................6
HIGH PRESSURE CUT-OFF SWITCH ..........6
HIGH PRESSURE RELIEF VALVE .............7
LOW PRESSURE CYCLING CLUTCH SWITCH...7
REFRIGERANT ...........................7
REFRIGERANT LINES......................7
REFRIGERANT LINE COUPLERS .............8
REFRIGERANT OIL ........................8
REFRIGERANT SYSTEM SERVICE PORT.......9
VACUUM CHECK VALVE....................9
VACUUM RESERVOIR .....................9
DIAGNOSIS AND TESTING
A/C PERFORMANCE .......................9
BLOWER MOTOR ........................12
BLOWER MOTOR RELAY ..................13
BLOWER MOTOR RESISTOR...............14
BLOWER MOTOR SWITCH.................14
COMPRESSOR ..........................14
COMPRESSOR CLUTCH COIL ..............15
COMPRESSOR CLUTCH RELAY.............15
DUAL FUNCTION HIGH PRESSURE
SWITCH/HIGH PRESSURE CUT-OFF
SWITCH..............................16
HEATER PERFORMANCE ..................16
LOW PRESSURE CYCLING CLUTCH SWITCH. . 17
REFRIGERANT SYSTEM LEAKS.............17
VACUUM SYSTEM .......................18
SERVICE PROCEDURES
REFRIGERANT OIL LEVEL .................19
REFRIGERANT RECOVERY.................22
REFRIGERANT SYSTEM EVACUATE..........22
REFRIGERANT SYSTEM CHARGE ...........22
REFRIGERANT SYSTEM SERVICE
EQUIPMENT...........................22
REMOVAL AND INSTALLATION
SERVICE WARNINGS AND PRECAUTIONS ....23
ACCUMULATOR .........................25
BLEND-AIR DOOR MOTOR ................26
BLOWER MOTOR ........................26
BLOWER MOTOR RELAY ..................27
BLOWER MOTOR RESISTOR...............27
COMPRESSOR ..........................28
COMPRESSOR CLUTCH...................29
COMPRESSOR CLUTCH RELAY.............31
CONDENSER............................32
DUAL FUNCTION HIGH PRESSURE
SWITCH/HIGH PRESSURE CUT-OFF
SWITCH..............................33
DUCTS AND OUTLETS ....................33
EVAPORATOR COIL ......................35
FIXED ORIFICE TUBE.....................35
HEATER-A/C CONTROL ...................35
HEATER-A/C HOUSING....................36
HEATER-A/C HOUSING DOOR ..............39
HEATER CORE ..........................41
LIQUID LINE............................41
LOW PRESSURE CYCLING CLUTCH SWITCH. . 42
KICK COVER............................42
MODE DOOR VACUUM ACTUATOR ..........43
REFRIGERANT LINE COUPLER .............45
SUCTION AND DISCHARGE LINE ...........45
VACUUM CHECK VALVE...................46
VACUUM RESERVOIR ....................47
SPECIFICATIONS
A/C APPLICATION TABLE..................47
XJ HEATING AND AIR CONDITIONING 24 - 1