Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Jeep Cherokee XJ 1997.1999-2001 Approved 1999 XJ Jeep Cherokee EXJ_24
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XJ HEATING AND AIR CONDITIONING 24 - 1
HEATING AND AIR CONDITIONING
CONTENTS
page page
GENERAL INFORMATION COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . 17
A/C APPLICATION TABLE . . . . . . . . . . . . . . . . . . 2 HEATER PERFORMANCE . . . . . . . . . . . . . . . . . 17
HEATER AND AIR CONDITIONER . . . . . . . . . . . . 2 HIGH PRESSURE CUT-OFF SWITCH . . . . . . . . 18
HEATER AND AIR CONDITIONER CONTROL . . . 3 LOW PRESSURE CYCLING CLUTCH SWITCH . 18
SERVICE WARNINGS AND PRECAUTIONS . . . . 3 REFRIGERANT SYSTEM LEAKS . . . . . . . . . . . . 19
DESCRIPTION AND OPERATION VACUUM SYSTEM . . . . . . . . . . . . . . . . . . . . . . 19
ACCUMULATOR . . . . . . . . . . . . . . . . . . . . . . . . . 5 SERVICE PROCEDURES
BLOWER MOTOR . . . . . . . . . . . . . . . . . . . . . . . . 5 REFRIGERANT OIL LEVEL . . . . . . . . . . . . . . . . 23
BLOWER MOTOR RELAY . . . . . . . . . . . . . . . . . . 5 REFRIGERANT RECOVERY . . . . . . . . . . . . . . . . 23
BLOWER MOTOR RESISTOR . . . . . . . . . . . . . . . 6 REFRIGERANT SYSTEM CHARGE . . . . . . . . . . 23
BLOWER MOTOR SWITCH . . . . . . . . . . . . . . . . . 6 REFRIGERANT SYSTEM EVACUATE . . . . . . . . . 23
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . 6 REMOVAL AND INSTALLATION
COMPRESSOR CLUTCH . . . . . . . . . . . . . . . . . . . 6 ACCUMULATOR . . . . . . . . . . . . . . . . . . . . . . . . 24
COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . . 7 BLEND-AIR DOOR MOTOR . . . . . . . . . . . . . . . 25
CONDENSER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 BLOWER MOTOR . . . . . . . . . . . . . . . . . . . . . . . 25
EVAPORATOR COIL . . . . . . . . . . . . . . . . . . . . . . 7 BLOWER MOTOR RELAY . . . . . . . . . . . . . . . . . 26
FIXED ORIFICE TUBE . . . . . . . . . . . . . . . . . . . . . 7 BLOWER MOTOR RESISTOR . . . . . . . . . . . . . . 26
HEATER CORE . . . . . . . . . . . . . . . . . . . . . . . . . . 7 COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . 27
HIGH PRESSURE CUT-OFF SWITCH . . . . . . . . . 8 COMPRESSOR CLUTCH . . . . . . . . . . . . . . . . . . 27
HIGH PRESSURE RELIEF VALVE . . . . . . . . . . . . 8 COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . 30
LOW PRESSURE CYCLING CLUTCH SWITCH . . 8 CONDENSER . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
REFRIGERANT . . . . . . . . . . . . . . . . . . . . . . . . . . 8 DUCTS AND OUTLETS . . . . . . . . . . . . . . . . . . . 31
REFRIGERANT LINE . . . . . . . . . . . . . . . . . . . . . . 9 EVAPORATOR COIL . . . . . . . . . . . . . . . . . . . . . 33
REFRIGERANT LINE COUPLER . . . . . . . . . . . . . 9 FIXED ORIFICE TUBE . . . . . . . . . . . . . . . . . . . . 33
REFRIGERANT OIL . . . . . . . . . . . . . . . . . . . . . . . 9 HEATER CORE . . . . . . . . . . . . . . . . . . . . . . . . . 39
REFRIGERANT SYSTEM SERVICE HEATER-A/C CONTROL . . . . . . . . . . . . . . . . . . 34
EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 10 HEATER-A/C HOUSING . . . . . . . . . . . . . . . . . . . 34
REFRIGERANT SYSTEM SERVICE PORT . . . . . 10 HEATER-A/C HOUSING DOOR . . . . . . . . . . . . . 37
VACUUM CHECK VALVE . . . . . . . . . . . . . . . . . . 10 HIGH PRESSURE CUT-OFF SWITCH . . . . . . . . 39
VACUUM RESERVOIR . . . . . . . . . . . . . . . . . . . 11 KICK COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
DIAGNOSIS AND TESTING LIQUID LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
A/C PERFORMANCE . . . . . . . . . . . . . . . . . . . . . 11 LOW PRESSURE CYCLING CLUTCH SWITCH . 40
BLOWER MOTOR . . . . . . . . . . . . . . . . . . . . . . . 14 MODE DOOR VACUUM ACTUATOR . . . . . . . . . 41
BLOWER MOTOR RELAY . . . . . . . . . . . . . . . . . 14 REFRIGERANT LINE COUPLER . . . . . . . . . . . . 43
BLOWER MOTOR RESISTOR . . . . . . . . . . . . . . 15 SUCTION AND DISCHARGE LINE . . . . . . . . . . 44
BLOWER MOTOR SWITCH . . . . . . . . . . . . . . . . 15 VACUUM CHECK VALVE . . . . . . . . . . . . . . . . . . 45
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . 16 VACUUM RESERVOIR . . . . . . . . . . . . . . . . . . . 45
COMPRESSOR CLUTCH COIL . . . . . . . . . . . . . 16
24 - 2 HEATING AND AIR CONDITIONING XJ
GENERAL INFORMATION HEATER AND AIR CONDITIONER
All vehicles are equipped with a common heater-
A/C APPLICATION TABLE A/C housing assembly (Fig. 1). The system combines
air conditioning, heating, and ventilating capabilities
Item Description Notes in a single unit housing mounted under the instru-
Vehicle XJ Cherokee/ ment panel. On heater-only systems, the evaporator
Laredo coil and recirculating air door are omitted from the
System R134a w/orifice housing.
tube
Compressor Sanden SP-20 PAG oil
SD7H15
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