Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Jeep Cherokee XJ 1997.1999-2001 Approved 2000 XJ Jeep Cherokee exj_24
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download exj_24 documenatation <<
Text preview - extract from the document
XJ HEATING AND AIR CONDITIONING 24 - 1
HEATING AND AIR CONDITIONING
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION REFRIGERANT SYSTEM LEAKS . . . . . . . . . . . . . 17
ACCUMULATOR . . . . . . . . . . . . . . . . . . . . . . . . . . 2 VACUUM SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 18
BLOWER MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . 2 SERVICE PROCEDURES
BLOWER MOTOR RELAY . . . . . . . . . . . . . . . . . . . 2 REFRIGERANT OIL LEVEL . . . . . . . . . . . . . . . . . 19
BLOWER MOTOR RESISTOR . . . . . . . . . . . . . . . . 3 REFRIGERANT RECOVERY . . . . . . . . . . . . . . . . . 22
BLOWER MOTOR SWITCH. . . . . . . . . . . . . . . . . . 3 REFRIGERANT SYSTEM EVACUATE. . . . . . . . . . 22
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 REFRIGERANT SYSTEM CHARGE . . . . . . . . . . . 22
COMPRESSOR CLUTCH . . . . . . . . . . . . . . . . . . . . 3 REFRIGERANT SYSTEM SERVICE
COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . . . 4 EQUIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
CONDENSER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 REMOVAL AND INSTALLATION
DUAL FUNCTION HIGH PRESSURE SWITCH SERVICE WARNINGS AND PRECAUTIONS . . . . 23
(4.0 L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ACCUMULATOR . . . . . . . . . . . . . . . . . . . . . . . . . 25
EVAPORATOR COIL . . . . . . . . . . . . . . . . . . . . . . . 4 BLEND-AIR DOOR MOTOR . . . . . . . . . . . . . . . . 26
FIXED ORIFICE TUBE . . . . . . . . . . . . . . . . . . . . . . 5 BLOWER MOTOR . . . . . . . . . . . . . . . . . . . . . . . . 26
HEATER AND AIR CONDITIONER. . . . . . . . . . . . . 5 BLOWER MOTOR RELAY . . . . . . . . . . . . . . . . . . 27
HEATER AND AIR CONDITIONER CONTROL . . . . 6 BLOWER MOTOR RESISTOR . . . . . . . . . . . . . . . 27
HEATER CORE . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . 28
HIGH PRESSURE CUT-OFF SWITCH . . . . . . . . . . 6 COMPRESSOR CLUTCH . . . . . . . . . . . . . . . . . . . 29
HIGH PRESSURE RELIEF VALVE . . . . . . . . . . . . . 7 COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . . 31
LOW PRESSURE CYCLING CLUTCH SWITCH . . . 7 CONDENSER. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
REFRIGERANT . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DUAL FUNCTION HIGH PRESSURE
REFRIGERANT LINES . . . . . . . . . . . . . . . . . . . . . . 7 SWITCH/HIGH PRESSURE CUT-OFF
REFRIGERANT LINE COUPLERS . . . . . . . . . . . . . 8 SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
REFRIGERANT OIL . . . . . . . . . . . . . . . . . . . . . . . . 8 DUCTS AND OUTLETS . . . . . . . . . . . . . . . . . . . . 33
REFRIGERANT SYSTEM SERVICE PORT . . . . . . . 9 EVAPORATOR COIL . . . . . . . . . . . . . . . . . . . . . . 35
VACUUM CHECK VALVE . . . . . . . . . . . . . . . . . . . . 9 FIXED ORIFICE TUBE . . . . . . . . . . . . . . . . . . . . . 35
VACUUM RESERVOIR . . . . . . . . . . . . . . . . . . . . . 9 HEATER-A/C CONTROL . . . . . . . . . . . . . . . . . . . 35
DIAGNOSIS AND TESTING HEATER-A/C HOUSING. . . . . . . . . . . . . . . . . . . . 36
A/C PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . 9 HEATER-A/C HOUSING DOOR . . . . . . . . . . . . . . 39
BLOWER MOTOR . . . . . . . . . . . . . . . . . . . . . . . . 12 HEATER CORE . . . . . . . . . . . . . . . . . . . . . . . . . . 41
BLOWER MOTOR RELAY . . . . . . . . . . . . . . . . . . 13 LIQUID LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
BLOWER MOTOR RESISTOR . . . . . . . . . . . . . . . 14 LOW PRESSURE CYCLING CLUTCH SWITCH . . 42
BLOWER MOTOR SWITCH. . . . . . . . . . . . . . . . . 14 KICK COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . 14 MODE DOOR VACUUM ACTUATOR . . . . . . . . . . 43
COMPRESSOR CLUTCH COIL . . . . . . . . . . . . . . 15 REFRIGERANT LINE COUPLER . . . . . . . . . . . . . 45
COMPRESSOR CLUTCH RELAY . . . . . . . . . . . . . 15 SUCTION AND DISCHARGE LINE . . . . . . . . . . . 45
DUAL FUNCTION HIGH PRESSURE VACUUM CHECK VALVE . . . . . . . . . . . . . . . . . . . 46
SWITCH/HIGH PRESSURE CUT-OFF VACUUM RESERVOIR . . . . . . . . . . . . . . . . . . . . 47
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 SPECIFICATIONS
HEATER PERFORMANCE . . . . . . . . . . . . . . . . . . 16 A/C APPLICATION TABLE . . . . . . . . . . . . . . . . . . 47
LOW PRESSURE CYCLING CLUTCH SWITCH . . 17
24 - 2 HEATING AND AIR CONDITIONING XJ
DESCRIPTION AND OPERATION BLOWER MOTOR
ACCUMULATOR DESCRIPTION
The blower motor and blower wheel are located in
DESCRIPTION the passenger side end of the heater-A/C housing,
The accumulator is mounted in the engine com- below the glove box. The blower motor controls the
partment between the evaporator coil outlet tube and velocity of air flowing through the heater-A/C hous-
the compressor inlet. ing by spinning a squirrel cage-type blower wheel
within the housing at the selected speed. The blower
OPERATION motor and wheel can be removed through an opening
Refrigerant enters the accumulator canister as a in the engine compartment side of the dash panel
low pressure vapor through the inlet tube. Any liq- without heater-A/C housing removal.
uid, oil-laden refrigerant falls to the bottom of the
canister, which acts as a separator. A desiccant bag is OPERATION
mounted inside the accumulator canister to absorb The blower motor will only operate when the igni-
any moisture which may have entered and become tion switch is in the On position, and the heater-A/C
trapped within the refrigerant system (Fig. 1). mode control switch knob is in any position, except
Off. The blower motor receives a fused battery feed
through the blower motor relay whenever the igni-
tion switch is in the On position. The blower motor
battery feed circuit is protected by a fuse in the
Power Distribution Center (PDC). Blower motor
speed is controlled by regulating the ground path
through the heater-A/C control blower motor switch
and the blower motor resistor.
The blower motor and blower motor wheel cannot
be repaired and, if faulty or damaged, they must be
replaced. The blower motor and blower wheel are ser-
viced only as a unit.
BLOWER MOTOR RELAY
DESCRIPTION
The blower motor relay is a International Stan-
dards Organization (ISO)-type relay. The relay is a
electromechanical device that switches battery cur-
rent from a fuse in the Power Distribution Center
(PDC) directly to the blower motor. The relay is ener-
gized when the relay coil is provided a voltage signal
by the ignition switch. See Blower Motor Relay in the
Diagnosis and Testing section of this group for more
information.
OPERATION
The blower motor relay is installed in a wire har-
Fig. 1 Accumulator - Typical ness connector that is secured to the passenger side
1 ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo