WARNINGS, CAUTIONS AND SERVICE PRECAUTIONS
WARNINGS
WARNING: THE AIR CONDITIONING SYSTEM CON-
TAINS REFRIGERANT UNDER HIGH PRESSURE.
SEVERE PERSONAL INJURY MAY RESULT FROM
IMPROPER SERVICE PROCEDURES. REPAIRS
SHOULD ONLY BE PERFORMED BY QUALIFIED
SERVICE PERSONNEL.
WARNING: AVOID BREATHING A/C REFRIGERANT
AND LUBRICANT VAPOR OR MIST. EXPOSURE MAY
IRRITATE EYES, NOSE AND/OR THROAT. WEAR
EYE PROTECTION WHEN SERVICING THE AIR
CONDITIONING REFRIGERANT SYSTEM. SERIOUS
EYE INJURY CAN RESULT FROM EYE CONTACT
WITH REFRIGERANT. IF EYE CONTACT IS MADE,
SEEK MEDICAL ATTENTION IMMEDIATELY.
WARNING: DO NOT EXPOSE REFRIGERANT TO
OPEN FLAME. POISONOUS GAS IS CREATED
WHEN REFRIGERANT IS BURNED. AN ELEC-
TRONIC TYPE LEAK DETECTOR IS RECOM-
MENDED.
WARNING: IF ACCIDENTAL SYSTEM DISCHARGE
OCCURS, VENTILATE THE WORK AREA BEFORE
RESUMING SERVICE. LARGE AMOUNTS OF RE-
FRIGERANT RELEASED IN A CLOSED WORK AREA
WILL DISPLACE THE OXYGEN AND CAUSE SUFFO-
CATION.
WARNING: THE EVAPORATION RATE OF (R-134A)
REFRIGERANT AT AVERAGE TEMPERATURE AND
ALTITUDE IS EXTREMELY HIGH. AS A RESULT,
ANYTHING THAT COMES IN CONTACT WITH THE
REFRIGERANT WILL FREEZE. ALWAYS PROTECT
SKIN OR DELICATE OBJECTS FROM DIRECT CON-
TACT WITH REFRIGERANT.
WARNING: R-134A SERVICE EQUIPMENT OR VEHI-
CLE A/C SYSTEM SHOULD NOT BE PRESSURE
TESTED OR LEAK TESTED WITH COMPRESSED
AIR. SOME MIXTURES OF AIR AND R-134A HAVE
BEEN SHOWN TO BE COMBUSTIBLE AT ELEVATED
PRESSURES. THESE MIXTURES ARE POTENTIALLY
DANGEROUS AND MAY RESULT IN FIRE OR EX-
PLOSION CAUSING INJURY OR PROPERTY DAM-
AGE.
CAUTIONS
CAUTION: Liquid refrigerant is corrosive to metal
surfaces. Follow the operating instructions supplied
with equipment being used.
CAUTION: DO NOT use R-12 equipment or parts on
the R-134a system. Damage to the system will re-
sult.
CAUTION: Never add R-12 to a system designed to
use R-134a. Damage to the system will result.
CAUTION: R-12 compressor oil can not be mixed
with the R-134a compressor oil. They ARE NOT
compatible.
CAUTION: Do not over charge refrigerant system.
This will cause excessive compressor head pres-
sure and can cause noise and system failure.
SERVICE PRECAUTIONS
Recover the refrigerant before opening any fitting
or connection. Open fittings with caution even after
the system has been discharged. Never open or
loosen a connection before recovering the refrigerant.
The A/C system must always be evacuated before
charging.
DO NOT open the refrigerant system or uncap a
replacement component until you are ready to service
the system. This will prevent contamination in the
system.
Before disconnecting a component clean the outside
of the fittings thoroughly to prevent contamination
entering the system.
Immediately after disconnecting a component from
the system, seal the open fittings with a cap or plug.
Before connecting an open fitting always install a
new seal/gasket. Coat the fitting and seal with clean
refrigerant oil before connecting.
When installing a refrigerant line avoid sharp
bends. Position the lines away from the exhaust or
any sharp edges which may chafe the line.
Tighten fittings only to the specified torque. The
aluminum fittings used in the A/C system will not
tolerate over tightening.
When disconnecting a fitting use a wrench on both
halves of the fitting. This will prevent twisting of the
refrigerant lines or tubes.
Refrigerant oil absorbs moisture from the atmo-
sphere if left uncapped. DO NOT open a container of
JHEATING AND AIR CONDITIONING 24 - 9
REFRIGERANT OIL
It is important to have the correct amount of oil in
the A/C system. This will ensure proper lubrication of
the compressor. Too little oil will result in damage to
the compressor. Too much oil will reduce the cooling
capacity of the system.
The oil used in the SD7H15 compressor is a poly-
alkylene glycol synthetic oil SP-20 PAG, wax-free re-
frigerant oil. Only refrigerant oil of the same type
should be used to service the system. Do not use any
other oil. The oil container should be kept tightly
capped until it is ready for use and then capped after
use to prevent contamination. Refrigerant oil will
quickly absorb any moisture it comes in contact with.
OIL LEVEL CHECK
It will not be necessary to check oil level in the
compressor or to add oil unless there has been an oil
loss. This may be due to a rupture or leak from a
line, shaft seal, evaporator or condenser. Oil loss at a
leak point will be evident by the presence of a wet,
shiny surface around the leak.
When an A/C system is assembled at the factory,
all components (except the compressor) are refriger-
ant oil free. After the system has been charged and
operated, the oil in the compressor is dispersed
through the system. The receiver-drier, evaporator,
condenser and compressor will retain a significant
amount of oil.
Refrigerant oil must be added when a receiver-
drier, evaporator, condenser or compressor are re-
placed. When the compressor is replaced, the oil
must be drained from the replaced compressor and
measured. Drain all the oil from the new compressor.
Add back into the new compressor the amount of oil
that was drained out of the old compressor.
Add an additional 30 ml (1 fluid oz.) of com-
pressor oil to the system when a receiver-drier,
condenser or evaporator is replaced.
AIR CONDITIONING PERFORMANCE TESTS
Humidity has an important bearing on the temper-
ature of the air delivered to the vehicle's interior. It
is important to understand the effect humidity has
on the performance of the system. When humidity is
high, the evaporator has to perform a double duty. It
must lower the air temperature and the temperature
of the moisture carried in the air. Condensing the
moisture in the air transfers a great deal of heat en-
ergy into the evaporator fins and tubing. This re-
duces the amount of heat the evaporator can absorb
from the air. High humidity greatly reduces the evap-
orator's ability to lower the temperature of the air.Evaporator capacity used to reduce the amount of
moisture in the air is not wasted. Wringing some of
the moisture out of the air entering the vehicle adds
to the comfort of the passengers. However, an owner
may expect too much from their air conditioning sys-
tem on humid days. A performance test is the best
way to determine whether or not the system is per-
forming up to standard. This test also provides valu-
able clues to the possible cause of trouble.
Air temperature in test room must be 21ÉC (70ÉF)
minimum for this test.
(1) Connect a Tachometer and manifold gauge set.
(2) Set A/C controls to Max A/C, temperature lever
on full cool and blower on high.
(3) Start engine and adjust idle to 1,000 RPM with
A/C clutch engaged.
(4) Engine should be warmed up with doors, win-
dows and hood closed.
(5) Insert a thermometer in the left center A/C out-
let. Operate the A/C and engine for 5 minutes. The
A/C clutch may cycle depending on ambient temper-
atures.
(6) After 5 minutes note the discharge air temper-
ature. If the clutch cycles, take the reading before
the clutch disengages.
(7) On LHD XJ vehicles open the hood and discon-
nect vacuum line going to the heater water control
valve. Observe the valve arm for movement as the
line is disconnected. Plug the vacuum line to prevent
leakage. If it does not move repair vacuum circuit.
(8) Operate the A/C for 2 more minutes and take
the discharge air temperature reading again. On XJ
vehicles if the temperature increased by more than
2ÉC (5ÉF) check the blend air door cable for correct
operation.
(9) Compare the discharge air temperature to the
A/C Performance (Temperature and Pressure) Chart.
If the discharge air temperature is high, refer to Re-
frigerant Leak Testing and Refrigerant System Diag-
nosis Chart.
(10) Compare the compressor discharge and suc-
tion pressures to the A/C Performance (Temperature
and Pressure) Chart. If the compressor discharge or
suction pressure is not normal, check the operation of
the refrigerant system. Refer to Refrigerant System
Diagnosis Chart.
If pressures are abnormal, refer to the Pressure
and Performance Diagnosis Charts.
The following chart have been developed for quick
reference.
24 - 12 HEATING AND AIR CONDITIONINGJ
(5) Remove the A/C-heater control panel screws
(Fig. 4).
(6) Remove the electrical connectors (Fig. 5).
(7) Disconnect the vacuum hoses by releasing the
locking tabs (Fig. 6).
(8) Remove the control cable locking tab by using a
screwdriver to release the tab (Fig. 7).
(9) Remove the ring on the end of the control cable
from the arm on the bottom of the control panel (Fig.
8).To Install the A/C-heater control panel, reverse the
removal procedures.
BLOWER MOTOR/FAN REPLACEMENT
2.5L ENGINE
(1) Disconnect the blower motor wires (Fig. 9).
(2) Remove the blower motor mounting bolts (Fig.
10).
(3) Remove the blower motor and fan assembly.
Fig. 4 Control Panel Mounting Screws
Fig. 5 Electrical Connectors
Fig. 6 Vacuum Hose Connector
Fig. 7 Control Cable Locking Tab
24 - 24 HEATING AND AIR CONDITIONINGJ
(1) Install the filter drier.
(2) Install and tighten the nut attaching the filter
drier to the side sill weld stud.
(3) Plug the harness to the low pressure switch.
(4) Remove the plugs the openings. Connect the
A/C hoses to the receiver dryer.
(5) Evacuate and charge the A/C system.
EVAPORATOR/BLOWER HOUSING
REVIEW WARNINGS AND CAUTIONS IN
THIS GROUP BEFORE PERFORMING THIS
OPERATION.
REMOVAL
(1) Disconnect negative cable from battery.
(2) Recover refrigerant from A/C system and dis-
connect A/C lines from the expansion valve.
(3) Disconnect the blower motor wires and the vent
tube.
(4) Remove center console. Refer to Group 23 body
for procedure.
(5) Remove the lower instrument panel.
(6) Disconnect the electrical connections at the
blower motor resistors and cycling clutch switch. Dis-
connect the vacuum hose at the vacuum motor (Fig.
19).
(7) Cut the plastic retaining strap that retains the
evaporator/blower housing to the heater core housing
(Fig. 20).
(8) Disconnect and remove the heater control cable.
(9) Remove the clip at the rear of the blower hous-
ing flange and remove the retaining screws.(10) Remove the housing attaching nuts from en-
gine compartment side of the dash panel (Fig. 21).
Remove evaporator drain tube.
(11) Remove right kick panel and remove the in-
strument panel support bolt.
(12) To disengage housing studs from the dash panel,
gently pull out on the right side of the dash. Then ro-
tate housing downward and toward the rear of the ve-
hicle . Remove the evaporator/blower housing.
INSTALLATION
(1) Position evaporator/blower housing into place,
being sure to line up the housings using the provided
alignment tabs (Figs. 22 and 23).
Fig. 19 Evaporator Housing Components
Fig. 20 Evaporator Housing
Fig. 21 Evaporator Housing Mounting
JHEATING AND AIR CONDITIONING 24 - 29
COMPONENT SERVICEÐYJ VEHICLES
INDEX
page page
A/C Blower Motor......................... 35
A/C Condenser........................... 34
Blower Motor (Heating)..................... 33
Blower Motor/Air Door Motor Switch Replacement . 32
Defroster Nozzle and Duct.................. 33
Description.............................. 32
Evaporator and Housing.................... 35
Expansion Valve.......................... 35Fresh Air Door Vacuum Motor................ 34
Fresh Air Intake Duct...................... 34
Heater Control Replacement................. 32
Heater Core and Housing................... 33
Receiver-Drier Replacement................. 35
Temperature Control Thermostat.............. 34
Vent Door Control Cables................... 32
DESCRIPTION
The air conditioning evaporator housing is
mounted to the bottom of instrument panel. The
evaporator, blower motor, thermostat, and expansion
valve are located in the evaporator housing. The com-
pressor, condenser, receiver-dryer and refrigerant
lines are located in the engine compartment.
The heater housing is mounted to the dash panel
behind the instrument panel.
HEATER CONTROL REPLACEMENT
(1) Remove instrument cluster bezel attaching
screws (Fig. 1).
(2) Remove instrument cluster bezel.
(3) Remove screws attaching the heater control
panel to the instrument panel.
(4) Slide control panel outward and disconnect the
cables, vacuum hoses and electrical wires from the
control panel.
(5) Remove control panel.
To install control panel, reverse the removal proce-
dures.
BLOWER MOTOR/AIR DOOR MOTOR SWITCH
REPLACEMENT
(1) Remove heater control panel (Fig. 2).
(2) Remove air door motor switch.
(3) Remove control knob from the blower switch.(4) Remove screws that attach the switch to the
control panel.
(5) Remove switch from the control panel.
To install switches, reverse the removal procedures.
VENT DOOR CONTROL CABLES
REMOVAL
(1) Disconnect cable from the vent door.
(2) Disconnect cable from the heater control panel
lever. The cables are attached to the control panel le-
vers with plastic tabs. Press the tabs together and
lift the cable upward to disengage it from the lever.
(3) Remove the cable. The clip on the cable wire
has 2 functions. It attaches the cable to the vent door
and is also the self adjusting mechanism. The left ca-
ble operates the right cable. The cables must be in-
stalled as outlined to maintain the self adjusting
feature and ensure proper vent door operation.
Fig. 1 Instrument Cluster Bezel
Fig. 2 Control Switches
24 - 32 HEATING AND AIR CONDITIONINGJ
EMISSION CONTROLS
INDEX
page page
Crankcase Ventilation System................. 5
EVAP (Evaporation) Control System............ 4
EVAP Canister............................ 4Fuel Tank Filler Tube Cap.................... 4
Oxygen (O2S) Sensor....................... 6
Pressure Relief/Rollover Valve................. 6
EVAP (EVAPORATION) CONTROL SYSTEM
GENERAL INFORMATION
The function of the EVAP control system is to pre-
vent the emissions of gasoline vapors from the fuel
tank into the atmosphere. When fuel evaporates in
the fuel tank, the vapors pass through vent hoses or
tubes to a carbon filled EVAP canister. They are tem-
porarily held in the canister until they can be drawn
into the intake manifold when the engine is running.
The EVAP canister is a feature on all models for
the storage of fuel vapors from the fuel tank.
The hoses used in this system are specially
manufactured. If replacement becomes neces-
sary, it is important to use only fuel resistant
hose.
EVAP CANISTER
A sealed, maintenance free, EVAP canister is used
on all vehicles. On XJ models, the EVAP canister is
located in the engine compartment on the passenger
side frame rail (Fig. 4). On YJ models, the EVAP can-
ister is located in the engine compartment on the
dash panel and below the brake master cylinder (Fig.
5). The EVAP canister is filled with granules of an
activated carbon mixture. Fuel vapors entering the
EVAP canister are absorbed by the charcoal granules.
CANISTER OPERATION
Vacuum is used to control and operate the
EVAP canister. No electrical circuitry is used to
control or operate the EVAP system.
The EVAP canister is equipped with a vacuum con-
trolled purge shutoff switch (orifice) (Figs. 4 or 5)
that controls canister purge operation. The switch is
open when manifold vacuum is applied to it. When
the engine is operating, the EVAP canister purge
function draws fresh air through the top of the can-
ister. This causes the stored vapors to be drawn out
of the canister and into the airstream in the air
cleaner snorkel (Fig. 6).
The air cleaner contains a venturi in the air
cleaner cover used as a purge line vacuum source
(Fig. 6). The venturi effect increases the speed of the
intake air flowing by the slots in the venturi wall.
This creates a low pressure area around the slots.
When the purge shutoff switch is open, vapors from
the canister are drawn through slots and into the air-
stream flowing through the venturi (Fig. 7). The va-
pors pass through the intake manifold into the
engine combustion chambers where they are con-
sumed during engine combustion.
FUEL TANK FILLER TUBE CAP
The fuel tank filler tube cap (fuel tank cap) incor-
porates a two-way pressure/relief valve that is closed
to atmosphere during normal operating conditions.Fig. 4 EVAP Canister LocationÐXJ Models
Fig. 5 EVAP Canister LocationÐYJ Models
25 - 4 EMISSION CONTROL SYSTEMSJ
- XJ, ANTENNA REMOVE/INSTALL........8F-8
- XJ, GENERAL INFORMATION...........8K-1
- XJ, MULTI-FUNCTION SWITCH..........8J-4
- XJ, MULTI-FUNCTION SWITCH
REMOVE/INSTALL.....................8J-5
- XJ, RADIO REMOVE/INSTALL...........8F-6
- XJ, SOUND BAR REMOVE/INSTALL......8F-8
- XJ, SPEAKERS REMOVE/INSTALL........8F-6
- XJ, TURN SIGNAL/HAZARD WARNING
SYSTEM.............................8J-3
- YJ, ANTENNA REMOVE/INSTALL.......8F-10
- YJ, BUZZER MODULE SCHEMATIC......8U-4
- YJ, GENERAL INFORMATION..........8K-10
- YJ, HAZARD WARNING SYSTEM........8J-4
- YJ, RADIO REMOVE/INSTALL...........8F-9
- YJ, SERVICE PROCEDURES...........8K-17
- YJ, SOUND BAR REMOVE/INSTALL.....8F-10
- YJ, SPEAKERS REMOVE/INSTALL........8F-9
- YJ, TURN SIGNAL SYSTEM............8J-3
- YJ, TURN SIGNAL/HAZARD WARNING
SWITCH REMOVE/INSTALL..............8J-5
30RH/32RH AUTOMATIC TRANSMISSION . . 21-67
30RH/32RH GENERAL SPECIFICATIONS . . 21-335
30RH/32RH IN-VEHICLE SERVICE........21-99
30RH/32RH PRESSURE TEST
SPECIFICATIONS....................21-336
30RH/32RH TORQUE SPECIFICATIONS . . . 21-336
30RH/32RH TRANSMISSION DIAGNOSIS . . 21-70
30RH/32RH TRANSMISSION OVERHAUL . 21-119
30RH/32RH TRANSMISSION REMOVAL
AND INSTALLATION..................21-115
4-CYLINDER ENGINE, ENGINE FIRING
ORDERÐ2.5L.......................8D-32
60-WAY CONNECTOR, POWERTRAIN
CONTROL MODULE (PCM).............14-40
6-CYLINDER ENGINE, AUXILIARY
ELECTRIC COOLING FANÐXJ MODELS
WITH 4.0L...........................7-35
6-CYLINDER ENGINE, ENGINE FIRING
ORDERÐ4.0L.......................8D-32
ABS BRAKE DIAGNOSIS.................5-3
ABS COMPONENT SERVICEABILITY.......5-37
ABS DIAGNOSTIC CONNECTOR.......5-35,5-3
ABS OPERATION AND SERVICE..........5-33
ABS POWER RELAY; ANTI-LOCK BRAKES
(XJ).............................8W-32-1
ABS POWER RELAY; ANTI-LOCK BRAKES
(XJ-RHD).........................8W-32-1
ABS POWER RELAY; ANTI-LOCK BRAKES
(YJ).............................8W-32-1
ABS PUMP MOTOR RELAY; ANTI-LOCK
BRAKES (XJ)......................8W-32-1
ABS PUMP MOTOR RELAY; ANTI-LOCK
BRAKES (XJ-RHD).................8W-32-1
ABS PUMP MOTOR RELAY; ANTI-LOCK
BRAKES (YJ)......................8W-32-1
ABS SYSTEM POWER-UP AND
INITIALIZATION.......................5-35
ABS WARNING LAMP; ANTI-LOCK
BRAKES (XJ)......................8W-32-2
ABS WARNING LAMP; ANTI-LOCK
BRAKES (XJ-RHD).................8W-32-2
ABS WARNING LAMP; ANTI-LOCK
BRAKES (YJ)
......................8W-32-2
ABS WARNING LAMP; INSTRUMENT
CLUSTER (XJ)
.....................8W-40-2
ABS WARNING LAMP; INSTRUMENT
CLUSTER (XJ-RHD)
................8W-40-2
ABS WARNING LAMP; INSTRUMENT
CLUSTER (YJ)
.....................8W-40-2
ABS WARNING LIGHT DISPLAY
...........5-3
ABSOLUTE PRESSURE (MAP) SENSOR,
MANIFOLD; FUEL SYSTEM
.............14-63
ABSOLUTE PRESSURE (MAP) SENSOR,
MANIFOLD; FUEL/IGNITION (YJ)
......8W-30-4
ABSOLUTE PRESSURE (MAP) SENSOR,
MANIFOLD; IGNITION SYSTEMS
....8D-23,8D-5
ABSOLUTE PRESSURE (MAP) SENSOR
TEST, MANIFOLD; FUEL SYSTEM
........14-47
ABSOLUTE PRESSURE (MAP) SENSOR
TEST, MANIFOLD; IGNITION SYSTEMS
....8D-11
ABSOLUTE PRESSURE (MAP)
SENSORÐPCM INPUT, MANIFOLD
.......14-23
ABSOLUTE PRESSURE SENSOR,
MANIFOLD; FUEL/IGNITION (XJ)
......8W-30-4
ABSOLUTE PRESSURE SENSOR,
MANIFOLD; FUEL/IGNITION (XJ-RHD)
. . 8W-30-4ABSORBER, SHOCK; FRONT
SUSPENSION AND AXLE............2-13,2-16
ABSORBER, SHOCK; REAR SUSPENSION
AND AXLES........................3-4,3-7
A/C BLOWER MOTOR.................24-35
A/C COMPONENTS....................24-4
A/C COMPRESSOR; AIR CONDITIONING/
HEATER (YJ)......................8W-42-2
A/C COMPRESSOR CLUTCH............24-15
A/C COMPRESSOR CLUTCH RELAY . 24-15,24-16
A/C CONDENSER.....................24-34
A/C CONTROL REPLACEMENT, HEATER . . . 24-23
A/C OPERATION, HEATER...............24-1
A/C RECIRCULATING DOOR VACUUM
MOTOR REPLACEMENT...............24-27
ACCELERATION SWITCH; ANTI-LOCK
BRAKES (XJ)......................8W-32-1
ACCELERATION SWITCH; ANTI-LOCK
BRAKES (XJ-RHD).................8W-32-1
ACCELERATION SWITCH; ANTI-LOCK
BRAKES (YJ)......................8W-32-1
ACCELERATION SWITCH; BRAKES........5-35
ACCELERATION SWITCH INSTALLATION....5-39
ACCELERATION SWITCH OPERATION......5-37
ACCELERATION SWITCH REMOVAL.......5-39
ACCELERATOR PEDAL.................14-17
ACCELERATOR PEDAL AND THROTTLE
CABLE........................14-17,14-58
ACCESSORY DRIVE BELT...............0-21
ACCESSORY DRIVE BELTS, ENGINE.......7-38
ACCESSORY LAMP AND HEATER
CONTROL PANEL LAMP; INTERIOR
LIGHTING (YJ)....................8W-44-1
ACCUMULATOR PISTONS AND SPRINGS . 21-189
A/C-HEATER BLOWER MOTOR; AIR
CONDITIONING/HEATER (YJ).........8W-42-2
A/C-HEATER SYSTEM; AIR
CONDITIONING/HEATER (XJ).........8W-42-1
A/C-HEATER SYSTEM; AIR
CONDITIONING/HEATER (XJ-RHD).....8W-42-1
ADD-A-TRUNKÐYJ..................23-157
ADJUSTER/MOTORS, POWER SEAT . . . 8R-1,8R-2
ADJUSTER/MOTORS REMOVE/INSTALL,
POWER SEAT........................8R-3
ADJUSTMENT, BRAKELIGHT SWITCH......5-32
ADJUSTMENT, COMPASS VARIATION......8C-5
ADJUSTMENT, DIFFERENTIAL SHIM
PACK MEASUREMENT..................2-43
ADJUSTMENT, DRUM BRAKE............5-57
ADJUSTMENT, FRONT BAND...........21-102
ADJUSTMENT, GEARSHIFT CABLE/
LINKAGE...........................21-71
ADJUSTMENT, PARK INTERLOCK CABLE . 21-195
ADJUSTMENT PROCEDURES,
TRANSMISSION ASSEMBLY...........21-155
ADJUSTMENT, REAR WHEEL SENSOR
INSTALLATION........................5-38
ADJUSTMENT, SHIFT CABLE...........21-195
ADJUSTMENT, SHIFT LINKAGE . . . 21-286,21-309
ADJUSTMENT, TRANSMISSION
THROTTLE CABLE...................21-194
ADJUSTMENT, TRANSMISSION
THROTTLE VALVE CABLE..............21-71
ADJUSTMENT, VALVE BODY ASSEMBLY . . 21-153
ADJUSTMENT (XJ), PARK INTERLOCK
CABLE............................21-101
ADJUSTMENT (XJ), SHIFT CABLE.......21-100
ADJUSTMENT (XJ/YJ), PARKING BRAKE
CABLE TENSIONER....................5-69
ADJUSTMENT (XJ/YJ), THROTTLE VALVE
CABLE............................21-101
ADJUSTMENT (YJ), SHIFT LINKAGE.....21-100
ADJUSTMENTÐMAJOR, DOOR
ALIGNMENT.........................23-41
ADJUSTMENTÐMINOR, DOOR
ALIGNMENT.........................23-37
ADJUSTMENTÐXJ, DOOR LATCH........23-48
ADJUSTMENTÐXJ, HOOD.............23-10
ADJUSTMENTÐXJ, LIFTGATE...........23-63
ADJUSTMENTÐYJ, TAILGATE..........23-121
ADJUSTMENTS, ALIGNMENT
MEASUREMENTS
......................2-8
ADJUSTMENTS, STEERING GEAR
........19-24
AFTERMARKET PAINT AND TRIM
REPAIR PRODUCTSÐXJ
..............23-159
AFTERMARKET PAINT AND TRIM
REPAIR PRODUCTSÐYJ
..............23-160
AIR CLEANER
.......................14-29AIR CLEANER ELEMENT; EMISSION
CONTROL SYSTEMS...................25-7
AIR CLEANER ELEMENT; FUEL SYSTEM . . . 14-59
AIR CLEANER ELEMENT; LUBRICATION
AND MAINTENANCE...................0-18
AIR CLEANER HOUSING...............14-58
AIR CONDITIONING...................24-37
AIR CONDITIONING (A/C) CLUTCH
RELAY.............................14-58
AIR CONDITIONING (A/C) CLUTCH
RELAYÐPCM OUTPUT................14-26
AIR CONDITIONING (A/C) CONTROLSÐ
PCM INPUT.........................14-21
AIR CONDITIONING CONTROLSÐXJ
VEHICLES..........................24-15
AIR CONDITIONING CONTROLSÐYJ
VEHICLES..........................24-16
AIR CONDITIONING, HEATER; AIR
CONDITIONING/HEATER (YJ).........8W-42-2
AIR CONDITIONING OPERATION; AIR
CONDITIONING/HEATER (XJ).........8W-42-2
AIR CONDITIONING OPERATION; AIR
CONDITIONING/HEATER (XJ-RHD).....8W-42-2
AIR CONDITIONING PERFORMANCE
TESTS.............................24-12
AIR CONDITIONING SCHEMATICÐXJ......24-5
AIR CONDITIONING TEST PROCEDURES,
HEATING...........................24-15
AIR CONTROL (IAC) MOTOR, IDLE; FUEL
SYSTEM............................14-62
AIR CONTROL (IAC) MOTOR, IDLE;
FUEL/IGNITION (XJ)................8W-30-2
AIR CONTROL (IAC) MOTOR, IDLE;
FUEL/IGNITION (YJ)................8W-30-2
AIR CONTROL (IAC) MOTOR, IDLE;
FUEL/IGNITION (XJ-RHD)............8W-30-2
AIR CONTROL (IAC) MOTORÐPCM
OUTPUT, IDLE.......................14-27
AIR CONTROL MOTOR TEST, IDLE.......14-49
AIR DEFLECTORÐXJ, COWL
WEATHERSTRIP SEAL/CROSSMEMBER . . . 23-11
AIR DOOR VACUUM MOTOR, FRESH.....24-34
AIR EXHAUST GRILLEÐXJ.............23-25
AIR GAP, SPEED SENSOR...............5-37
AIR INTAKE DUCT, FRESH..............24-34
AIR PRESSURE TEST.................21-74
AIR TEMPERATURE SENSOR, INTAKE;
FUEL/IGNITION (XJ)................8W-30-4
AIR TEMPERATURE SENSOR, INTAKE;
FUEL/IGNITION (YJ)................8W-30-4
AIR TEMPERATURE SENSOR, INTAKE;
FUEL/IGNITION (XJ-RHD)............8W-30-4
AIR TEMPERATURE SENSOR, INTAKE
MANIFOLD; FUEL SYSTEM.............14-60
AIR TEMPERATURE SENSOR, INTAKE
MANIFOLD; IGNITION SYSTEMS....8D-23,8D-5
AIR TEMPERATURE, SENSOR
RESISTANCE (OHMS)ÐCOOLANT
TEMPERATURE SENSOR/MANIFOLD......14-46
AIR TEMPERATURE SENSOR TEST,
INTAKE MANIFOLD; FUEL SYSTEM.......14-46
AIR TEMPERATURE SENSOR TEST,
INTAKE MANIFOLD; IGNITION
SYSTEMS..........................8D-11
AIR TEMPERATURE SENSORÐPCM
INPUT, INTAKE MANIFOLD.............14-22
AIRBAG MODULE.....................8M-1
AIRBAG MODULE HANDLING............8M-2
AIRBAG MODULE REMOVE/INSTALL......8M-3
AIRBAG MODULE REMOVEÐINSTALL....19-49
AIRBAG SYSTEM; RESTRAINT SYSTEMS . . 8M-1
AIRBAG SYSTEM; STEERING...........19-47
AIRBAG SYSTEM SERVICE (DEPLOYED) . . . 8M-2
AIR-CONDITIONER COMPRESSOR........0-21
ALIGNMENT ADJUSTMENTÐMAJOR,
DOOR.............................23-41
ALIGNMENT ADJUSTMENTÐMINOR,
DOOR.............................23-37
ALIGNMENT, FRONT WHEEL..............2-5
ALIGNMENTÐXJ, HEADLAMP...........8L-6
ALIGNMENTÐYJ, HEADLAMP
..........8L-22
ALIGNMENTÐYJ, HOOD
..............23-107
ANCHOR AND BUMPERÐXJ, LIFTGATE
LICENSE PLATE SCREW
...............23-65
ANGLE, GROUND CLEARANCE AND
RAMP
..............................0-11
ANGLE MEASUREMENT, UNIVERSAL
JOINT
..............................16-4
JINDEX 1
Description Group-Page Description Group-Page Description Group-Page
ANTENNA........................8F-2,8F-5
ANTENNA, POWER; RADIO (XJ-RHD) . . . 8W-47-1
ANTENNA REMOVE/INSTALL - XJ.........8F-8
ANTENNA REMOVE/INSTALL - YJ........8F-10
ANTILOCK BRAKES (ABS)................5-1
ANTILOCK BRAKING MODE, ABS
OPERATION IN.......................5-36
ANTILOCK ECU AND HCU DIAGNOSIS......5-3
APPLICATION CHARTS, GEARTRAIN
OPERATION........................21-169
APPLICATION, TRANSMISSION..........21-67
APPLICATIONÐXJ VEHICLES, BULB......8L-18
APPLICATIONÐYJ VEHICLES, BULB......8L-32
APPLIQUEÐXJ, QUARTER WINDOW.....23-25
APPLIQUEÐYJ, RADIATOR GRILLE.....23-104
APRONSÐYJ, FENDER SPLASH........23-115
ARM, LOWER SUSPENSION.............2-13
ARM, PITMAN..................19-17,19-20
ARM REMOVE/INSTALL, LIFTGATE
WIPER.............................8K-17
ARM REMOVE/INSTALL, WINDSHIELD
WIPER.............................8K-17
ARM, UPPER SUSPENSION.............2-12
ARMING/DISARMING MECHANISM;
RESTRAINT SYSTEMS.................8M-2
ARMING/DISARMING MECHANISM;
STEERING..........................19-48
ARMS AND PUSH RODS, ROCKER....9-23,9-65
ASH RECEIVER TRAY LAMPÐXJ, I/P.....23-80
ASSEMBLY....................19-63,19-71
ASSEMBLY AND ADJUSTMENT, VALVE
BODY.............................21-153
ASSEMBLY, CALIPER...................5-50
ASSEMBLY, COMPRESSOR CLUTCH......24-20
ASSEMBLY, DIFFERENTIAL; FRONT
SUSPENSION AND AXLE................2-38
ASSEMBLY, DIFFERENTIAL; REAR
SUSPENSION AND AXLES...............3-21
ASSEMBLY, FINAL; FRONT SUSPENSION
AND AXLE...........................2-46
ASSEMBLY, FINAL; REAR SUSPENSION
AND AXLES..........................3-29
ASSEMBLY, FUEL RAIL................14-62
ASSEMBLY, GEAR....................19-43
ASSEMBLY, IMPACT SENSOR/INFLATOR . . . 8M-2
ASSEMBLY, PINION MEASUREMENT.......3-22
ASSEMBLY REMOVE/INSTALL, CLUSTER . . 8E-17,
8E-35
ASSEMBLY REPLACEMENT, ADJUSTER
PLUG..............................19-29
ASSEMBLY REPLACEMENT, COLUMN.....19-52
ASSEMBLY REPLACEMENTÐXJ
VEHICLES, DRIVE AXLE; FRONT
SUSPENSION AND AXLE................2-23
ASSEMBLY REPLACEMENTÐXJ
VEHICLES, DRIVE AXLE; REAR
SUSPENSION AND AXLES...........3-14,3-31
ASSEMBLY REPLACEMENTÐYJ
VEHICLES, DRIVE AXLE; FRONT
SUSPENSION AND AXLE................2-24
ASSEMBLY REPLACEMENTÐYJ
VEHICLES, DRIVE AXLE; REAR
SUSPENSION AND AXLES...............3-14
ASSEMBLY (SHORT BLOCK), SERVICE
ENGINE..............................9-4
ASSEMBLY TIPS, TRANSMISSION......21-155
ASSEMBLY, TRANSFER CASE
....21-294,21-319
ASSEMBLY/INSTALLATION, PINION GEAR
. . 2-42
ASSEMBLYÐXJ VEHICLES, ENGINE
. . . 9-18,9-59
ASSEMBLYÐYJ VEHICLES, ENGINE
. . . 9-20,9-62
ASSIST HANDLEÐXJ
.................23-89
ASSIST HANDLEÐYJ, FULL-METAL
DOOR
............................23-136
AUTO SHUTDOWN (ASD) RELAYÐPCM
OUTPUT
............................14-26
AUTOMATIC BELT TENSIONERÐXJ
MODELS WITH RIGHT HAND DRIVE
.......7-42
AUTOMATIC SHUT DOWN (ASD) RELAY;
FUEL/IGNITION (XJ)
................8W-30-1
AUTOMATIC SHUT DOWN (ASD) RELAY;
FUEL/IGNITION (YJ)
................8W-30-1
AUTOMATIC SHUT DOWN (ASD) RELAY;
FUEL/IGNITION (XJ-RHD)
............8W-30-1
AUTOMATIC SHUTDOWN (ASD) RELAY;
FUEL SYSTEM
.......................14-59
AUTOMATIC SHUTDOWN (ASD) RELAY;
IGNITION SYSTEMS
..............8D-17,8D-1AUTOMATIC SHUTDOWN (ASD) RELAY
TEST...............................8D-6
AUTOMATIC SHUTDOWN (ASD) RELAY
TESTING...........................14-46
AUTOMATIC SHUTDOWN (ASD)
SENSEÐPCM INPUT..................14-21
AUTOMATIC TRANSMISSION............0-23
AUTOMATIC TRANSMISSION, 30RH/
32RH..............................21-67
AUTOMATIC TRANSMISSION, AW-4.....21-165
AUTOMATIC TRANSMISSION SHIFTER/
IGNITION INTERLOCK MECHANISM......19-55
AUXILIARY ELECTRIC COOLING FANÐXJ
MODELS WITH 4.0L 6-CYLINDER
ENGINE.............................7-35
AW-4 ACCUMULATOR COMPONENT
IDENTIFICATION....................21-342
AW-4 AUTOMATIC TRANSMISSION......21-165
AW-4 BUSHING AND PISTON
CLEARANCE........................21-339
AW-4 CLUTCH AND BRAKE PACK
REQUIREMENTS....................21-341
AW-4 CLUTCH DISC AND PLATE
THICKNESS........................21-338
AW-4 GENERAL SPECIFICATIONS.......21-337
AW-4 IN-VEHICLE SERVICE............21-182
AW-4 OIL PUMP WEAR LIMITS........21-338
AW-4 RETAINER AND PISTON
SPECIFICATIONS....................21-340
AW-4 TORQUE SPECIFICATIONS........21-344
AW-4 TRANSMISSION DIAGNOSIS......21-176
AW-4 TRANSMISSION OVERHAUL......21-201
AW-4 TRANSMISSION REMOVAL AND
INSTALLATION......................21-198
AW-4 VALVE AND SPRING
IDENTIFICATION....................21-343
AW-4 VALVE BODY CHECK BALL
DIMENSIONS.......................21-341
AWAY, PEDAL FALLS....................5-5
AX 15 MANUAL TRANSMISSION........21-33
AX 4/5 MANUAL TRANSMISSION.........21-1
AXLE (2WD), MODEL 30 AXLE AND
TUBE...............................2-22
AXLE, 8 1/4......................3-30,3-51
AXLE ALIGNMENT, REAR...............3-10
AXLE AND TUBE AXLE (2WD), MODEL
30 .................................2-22
AXLE ASSEMBLY REPLACEMENTÐXJ
VEHICLES, DRIVE; FRONT
SUSPENSION AND AXLE................2-23
AXLE ASSEMBLY REPLACEMENTÐXJ
VEHICLES, DRIVE; REAR SUSPENSION
AND AXLES......................3-14,3-31
AXLE ASSEMBLY REPLACEMENTÐYJ
VEHICLES, DRIVE; FRONT
SUSPENSION AND AXLE................2-24
AXLE ASSEMBLY REPLACEMENTÐYJ
VEHICLES, DRIVE; REAR SUSPENSION
AND AXLES..........................3-14
AXLE BUSHING REPLACEMENT......2-12,2-34
AXLE, FRONT DRIVE....................2-3
AXLE, MODEL 30.....................2-49
AXLE, MODEL 30 FRONT...............2-49
AXLE, MODEL 35.................3-13,3-51
AXLE NOISE/VIBRATION DIAGNOSIS;
FRONT SUSPENSION AND AXLE..........2-18
AXLE NOISE/VIBRATION DIAGNOSIS;
REAR SUSPENSION AND AXLES
..........3-9
AXLE SHAFT
.........................3-16
AXLE SHAFT, HUB BEARING
.............2-25
AXLE SHAFT OIL SEAL REPLACEMENT,
INNER
..............................2-35
AXLE SHAFT SEAL AND BEARING
........3-17
AXLE SHAFT, SEAL AND BEARING
SERVICE
............................3-32
AXLE SPECIFICATIONS; FRONT
SUSPENSION AND AXLE
................2-49
AXLE SPECIFICATIONS; REAR
SUSPENSION AND AXLES
...............3-51
AXLEÐYJ VEHICLES, VACUUM
DISCONNECT
.........................2-27
AXLES
...............................3-1
AXLES, FRONT AND REAR
..............0-24
AXLE/SHIFT MOTOR DIAGNOSIS
(CONT'D), DISCONNECT
................2-30
AXLE/SHIFT MOTOR DIAGNOSIS,
DISCONNECT
.........................2-29BACKLASH AND CONTACT PATTERN
ANALYSIS; FRONT SUSPENSION AND
AXLE...............................2-45
BACKLASH AND CONTACT PATTERN
ANALYSIS; REAR SUSPENSION AND
AXLES..............................3-27
BACK-UP LAMPS; REAR LIGHTING (XJ) . 8W-51-1
BACK-UP LAMPS; REAR LIGHTING
(XJ-RHD).........................8W-51-1
BACK-UP LAMPS; REAR LIGHTING (YJ) . 8W-51-1
BACK-UP/REAR TURN SIGNAL/TAIL
LAMP BULB REPLACEMENTÐXJ........8L-12
BACK-UP/REAR TURN SIGNAL/TAIL
LAMP BULB REPLACEMENTÐYJ........8L-28
BALANCE, TIRE AND WHEEL............22-6
BALL DIMENSIONS, AW-4 VALVE BODY
CHECK............................21-341
BALL STUD REPLACEMENTÐXJ,
LIFTGATE SUPPORT ROD..............23-63
BALL STUDS, STEERING KNUCKLE.......2-32
BAR, STABILIZER; FRONT SUSPENSION
AND AXLE.......................2-11,2-15
BAR, STABILIZER; REAR SUSPENSION
AND AXLES...........................3-5
BAR, TRACK; FRONT SUSPENSION AND
AXLE...........................2-11,2-15
BAR, TRACK; REAR SUSPENSION AND
AXLES...............................3-8
BARÐXJ, SOUND....................23-94
BARÐYJ, SPORT...................23-132
BARRIERÐXJ, CARGO...............23-101
BASE COAT/CLEAR COAT FINISH.........23-158
BATTERY; BATTERY/STARTER/
GENERATOR SERVICE..................8B-1
BATTERY; BATTERY/STARTING/
CHARGING SYSTEMS DIAGNOSTICS......8A-2
BATTERY; LUBRICATION AND
MAINTENANCE.......................0-20
BATTERY CHARGING...................8A-7
BATTERY CHARGING TIME TABLE........8A-8
BATTERY CLASSIFICATIONS AND
RATINGS...........................8A-23
BATTERY DIAGNOSIS..................8A-4
BATTERY FEED; FUEL/IGNITION (XJ) . . . 8W-30-1
BATTERY FEED; FUEL/IGNITION (YJ) . . . 8W-30-2
BATTERY FEED; FUEL/IGNITION
(XJ-RHD).........................8W-30-1
BATTERY RATINGS....................8A-3
BATTERY REMOVE/INSTALL.............8B-1
BATTERY SPECIFICATIONS; BATTERY/
STARTER/GENERATOR SERVICE..........8B-8
BATTERY SPECIFICATIONS; BATTERY/
STARTING/CHARGING SYSTEMS
DIAGNOSTICS.......................8A-23
BATTERY TRAYÐXJ..................23-14
BATTERY TRAYÐYJ.................23-110
BATTERY VOLTAGEÐPCM INPUT........14-21
B/C-PILLAR AND LIFTGATE PILLAR TRIM
COVERSÐXJ........................23-88
BEARING AND AXLE SHAFT, HUB.........2-25
BEARING, AXLE SHAFT SEAL............3-17
BEARING LUBRICANTS, CHASSIS
COMPONENT AND WHEEL..............0-28
BEARING NOISE, GEAR; FRONT
SUSPENSION AND AXLE................2-18
BEARING NOISE, GEAR; REAR
SUSPENSION AND AXLES................3-9
BEARING REPLACEMENT, PILOT..........6-12
BEARING REPLACEMENT, PITMAN
SHAFT SEALS.......................19-34
BEARING REPLACEMENT, RELEASE.......6-11
BEARING SERVICE, AXLE SHAFT, SEAL....3-32
BEARINGS, CRANKSHAFT MAIN......9-45,9-87
BEARINGS, FRONT WHEEL..............0-28
BELT, ACCESSORY DRIVE...............0-21
BELT DIAGNOSIS......................7-38
BELT INDICATOR WARNING LAMP, SEAT;
INSTRUMENT CLUSTER (XJ).........8W-40-2
BELT INDICATOR WARNING LAMP, SEAT;
INSTRUMENT CLUSTER (XJ-RHD).....8W-40-2
BELT SCHEMATICS....................7-38
BELT SERVICEÐEXCEPT RIGHT HAND
DRIVE
..............................7-40
BELT SERVICEÐXJ MODELS WITH
RIGHT HAND DRIVE
...................7-42
BELT SWITCH, DRIVER'S SEAT
......8U-1,8U-3
BELT TENSION, DRIVE
.................7-45
BELT TENSION SPECIFICATIONS
..........7-38
2 INDEXJ
Description Group-Page Description Group-Page Description Group-Page