1995 JEEP CHEROKEE oil change

LIGHT DISPLAY, ABS WARNING...........5-3
LIGHT OPERATION, BRAKE WARNING......5-5
LIGHT, SYSTEM WARNING..............5-35
LIGHTED VANITY MIRROR TROUBLE
DIAGNOSISÐXJ.....................8L-16
LIGHTED VANITY MIRRORÐXJ.........8L-16
LIGHTER, CIGAR; HORN/CIGAR LIGHTER . . . 8E-1
LIGHTER, CIGAR; HORN/CIGAR LIGHTER
(YJ).............................8W-41-1
LIGHTER, CIGAR; INSTRUMENT
CLUSTER (XJ).....................8W-40-1
LIGHTS, BRAKE WARNING...............5-1
LIGHTS (CANADA ONLY)ÐXJ, DAYTIME
RUNNING...........................8L-15
LIGHTS (CANADA ONLY)ÐYJ, DAYTIME
RUNNING...........................8L-30
LIMITED SLIP DIFFERENTIAL............3-10
LIMITS, AW-4 OIL PUMP WEAR........21-338
LINE AND FITTING SERVICE,
TRANSMISSION COOLER.............21-111
LINE FITTINGS, TRANSMISSION COOLER . 21-197
LINERSÐXJ, REAR WHEELHOUSE
FLARES............................23-19
LINERSÐYJ, WHEELHOUSE SPLASH....23-115
LINK CONNECTOR, DATA; ANTI-LOCK
BRAKES (XJ)......................8W-32-2
LINK CONNECTOR, DATA; ANTI-LOCK
BRAKES (XJ-RHD).................8W-32-2
LINK CONNECTOR, DATA; ANTI-LOCK
BRAKES (YJ)......................8W-32-2
LINK CONNECTOR, DATA; FUEL/IGNITION
(XJ).............................8W-30-5
LINK CONNECTOR, DATA; FUEL/IGNITION
(YJ).............................8W-30-5
LINK CONNECTOR, DATA;
TRANSMISSION CONTROLS (XJ-RHD) . . 8W-31-1
LINK CONNECTOR, DATA; FUEL/IGNITION
(XJ-RHD).........................8W-30-4
LINK CONNECTORÐPCM INPUT, DATA . . . 14-22
LINK CONNECTORÐPCM OUTPUT, DATA . . 14-27
LINK, DRAG....................19-16,19-20
LINKAGE ADJUSTMENT, SHIFT . . . 21-286,21-309
LINKAGE ADJUSTMENT (YJ), SHIFT.....21-100
LINKAGE AND PIVOTS REMOVE/
INSTALL, WINDSHIELD WIPER..........8K-17
LINKAGE COMPONENTS, HYDRAULIC......6-1
LINKAGE FLUID, CLUTCH................6-1
LINKAGE INSTALLATION, CLUTCH
HYDRAULIC..........................6-14
LINKAGE REMOVAL, CLUTCH
HYDRAULIC..........................6-13
LINKAGE, STEERING...................0-28
LINKAGEÐXJ, STEERING.........19-16,19-78
LINKAGEÐYJ, STEERING.........19-19,19-78
LOAD DATA, VEHICLE................Intro.-5
LOAD DATAÐXJ, VEHICLE............Intro.-7
LOAD DATAÐYJ, VEHICLE............Intro.-8
LOCATIONS, CONNECTOR; CONNECTOR
LOCATIONS (XJ)...................8W-90-1
LOCATIONS, CONNECTOR; CONNECTOR
LOCATIONS (XJ-RHD)...............8W-90-1
LOCATIONS, CONNECTOR; CONNECTOR
LOCATIONS (YJ)
...................8W-90-1
LOCATIONS, CONNECTOR; CONNECTOR
PIN OUTS (XJ)
....................8W-80-1
LOCATIONS, CONNECTOR; CONNECTOR
PIN OUTS (XJ-RHD)
................8W-80-1
LOCATIONS, CONNECTOR; CONNECTOR
PIN OUTS (YJ)
....................8W-80-1
LOCATIONS, CONNECTOR; WIRING
DIAGRAMS (XJ)
......................8W-1
LOCATIONS, CONNECTOR; WIRING
DIAGRAMS (XJ-RHD)
..................8W-1
LOCATIONS, CONNECTOR; WIRING
DIAGRAMS (YJ)
......................8W-1
LOCATIONS, SPLICE; SPLICE LOCATIONS
(XJ)
.............................8W-95-1
LOCATIONS, SPLICE; SPLICE LOCATIONS
(YJ)
.............................8W-95-1
LOCATIONS, SPLICE; WIRING
DIAGRAMS (XJ)
......................8W-1
LOCATIONS, SPLICE; WIRING
DIAGRAMS (XJ-RHD)
..................8W-1
LOCATIONS, SPLICE; WIRING
DIAGRAMS (YJ)
......................8W-1
LOCATIONS, TRANSMISSION SWITCH
AND PLUG
..........................21-34LOCK COMPONENT OVERHAUL,
ADAPTER/EXTENSION HOUSING
INSPECTION AND PARK..............21-127
LOCK COMPONENT REPLACEMENT,
PARK .............................21-108
LOCK CYLINDERÐXJ, DOOR KEY.......23-47
LOCK CYLINDERÐYJ, FULL-METAL
DOOR KEY.........................23-139
LOCK CYLINDERÐYJ, TAILGATE.......23-122
LOCK CYLINDER/STRIKERÐXJ,
LIFTGATE LATCH/KEY.................23-61
LOCK HANDLEÐYJ, FULL-METAL DOOR
LATCH INSIDE RELEASE..............23-137
LOCK, HYDROSTATIC...................9-4
LOCK MOTOR, POWER.............8P-1,8P-7
LOCK MOTOR REMOVE/INSTALL,
POWER.............................8P-8
LOCK RELAY; POWER DOOR LOCKS
(XJ).............................8W-61-1
LOCK RELAY; POWER DOOR LOCKS
(XJ-RHD).........................8W-61-1
LOCK RODSÐXJ, DOOR INSIDE LATCH
RELEASE...........................23-50
LOCK SWITCH, PASSENGER'S POWER....8P-6
LOCK SWITCH, POWER................8P-1
LOCK SWITCH REMOVE/INSTALL,
POWER.............................8P-8
LOCK SWITCHÐ2-DOOR (LHD),
DRIVER'S POWER.....................8P-3
LOCK SWITCHÐ2-DOOR (RHD),
DRIVER'S POWER.....................8P-4
LOCK SWITCHÐ4-DOOR, DRIVER'S
POWER.............................8P-5
LOCK SYSTEM, POWER................8P-2
LOCKS, POWER DOOR; POWER DOOR
LOCKS (XJ).......................8W-61-1
LOCKS, POWER DOOR; POWER DOOR
LOCKS (XJ-RHD)..................8W-61-1
LOCK/UNLOCK RELAY REMOVE/INSTALL,
POWER............................8P-12
LOCK/UNLOCK RELAYS, POWER.........8P-1
LOOP MODES OF OPERATION, OPEN
LOOP/CLOSED.......................14-30
LOOP/CLOSED LOOP MODES OF
OPERATION, OPEN...................14-30
LOW FUEL WARNING LAMP;
INSTRUMENT CLUSTER (XJ).........8W-40-1
LOW SPEED KNOCK; FRONT
SUSPENSION AND AXLE................2-19
LOW SPEED KNOCK; REAR SUSPENSION
AND AXLES..........................3-10
LOW WASHER FLUID WARNING LAMP;
INSTRUMENT CLUSTER (XJ).........8W-40-2
LOW WASHER FLUID WARNING LAMP;
INSTRUMENT CLUSTER (XJ-RHD).....8W-40-2
LOWER SUSPENSION ARM..............2-13
LOW-LINE GAUGE CLUSTER.............8E-8
LOW-PRESSURE HIGH-PRESSURE
CUT-OFF SWITCH...............24-15,24-16
LUBRICANT AND FILL LEVEL, TRANSFER
CASE.............................21-284
LUBRICANT CHANGE; FRONT
SUSPENSION AND AXLE................2-23
LUBRICANT CHANGE; REAR
SUSPENSION AND AXLES...........3-13,3-31
LUBRICANT, RECOMMENDED............21-2
LUBRICANT SPECIFICATIONS; FRONT
SUSPENSION AND AXLE................2-22
LUBRICANT SPECIFICATIONS; REAR
SUSPENSION AND AXLES...........3-13,3-31
LUBRICANT SPECIFICATIONS, BODY......0-33
LUBRICANT, TRANSMISSION...........21-34
LUBRICANT/CAPACITY/FILL LEVEL,
RECOMMENDED....................21-307
LUBRICANTS, CHASSIS COMPONENT
AND WHEEL BEARING.................0-28
LUBRICANTS, CLASSIFICATION OF.........0-2
LUBRICATION AND REPLACEMENT
PARTS RECOMMENDATION...............0-2
LUBRICATION, CLUTCH COMPONENT......6-10
LUBRICATION, COMPONENTS
REQUIRING NO........................0-2
LUBRICATION SYSTEM.............9-37,9-79
LUG NUT, WHEEL
....................22-12
LUGGAGE RACKÐXJ
.................23-28
MAIN BEARING FITTING CHART
......9-48,9-90
MAIN BEARINGS, CRANKSHAFT
......9-45,9-87
MAIN CLUSTER
......................8E-30MAIN CLUSTER, 3 X 7.25..............8E-43
MAIN OIL SEALS, REAR............9-49,9-89
MAINTENANCE, EMISSION CONTROL
SYSTEM.............................0-4
MAINTENANCE, ENGINE................0-15
MAINTENANCE SCHEDULES..............0-4
MAJOR COMPONENT IDENTIFICATION . . . Intro.-5
MALFUNCTION INDICATOR LAMP (MIL);
FUEL/IGNITION (XJ)................8W-30-5
MALFUNCTION INDICATOR LAMP (MIL);
FUEL/IGNITION (YJ)................8W-30-5
MALFUNCTION INDICATOR LAMP (MIL);
INSTRUMENT CLUSTER (XJ).........8W-40-2
MALFUNCTION INDICATOR LAMP (MIL);
INSTRUMENT CLUSTER (XJ-RHD).....8W-40-1
MALFUNCTION INDICATOR LAMP (MIL);
FUEL/IGNITION (XJ-RHD)............8W-30-4
MALFUNCTION INDICATOR LAMPÐPCM
OUTPUT............................14-28
MALFUNCTIONS, DIAGNOSING PARKING
BRAKE...............................5-8
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR; FUEL SYSTEM...............14-63
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR; FUEL/IGNITION (YJ)........8W-30-4
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR; IGNITION SYSTEMS......8D-23,8D-5
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR TEST; FUEL SYSTEM..........14-47
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR TEST; IGNITION SYSTEMS......8D-11
MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSORÐPCM INPUT................14-23
MANIFOLD ABSOLUTE PRESSURE
SENSOR; FUEL/IGNITION (XJ)........8W-30-4
MANIFOLD ABSOLUTE PRESSURE
SENSOR; FUEL/IGNITION (XJ-RHD)....8W-30-4
MANIFOLD AIR TEMPERATURE SENSOR,
INTAKE; FUEL SYSTEM................14-60
MANIFOLD AIR TEMPERATURE SENSOR,
INTAKE; IGNITION SYSTEMS.......8D-23,8D-5
MANIFOLD AIR TEMPERATURE SENSOR
TEST, INTAKE; FUEL SYSTEM...........14-46
MANIFOLD AIR TEMPERATURE SENSOR
TEST, INTAKE; IGNITION SYSTEMS......8D-11
MANIFOLD AIR TEMPERATURE
SENSORÐPCM INPUT, INTAKE..........14-22
MANIFOLD GAUGE SET.................24-7
MANIFOLD, INTAKE...................14-63
MANIFOLD LEAKAGE DIAGNOSIS,
INTAKE ..............................9-5
MANIFOLDÐ2.5L ENGINE, ENGINE
EXHAUST............................11-7
MANIFOLDÐ2.5L ENGINE, INTAKE........11-7
MANIFOLDÐ4.0L ENGINE, ENGINE
EXHAUST............................11-7
MANIFOLDÐ4.0L ENGINE, INTAKE........11-8
MANUAL FIRST GEAR (1) POSITION,
HYDRAULIC FLOW IN.................21-97
MANUAL SECOND (2) RANGE,
HYDRAULIC FLOW IN.................21-96
MANUAL SHIFTING TEST.............21-177
MANUAL STEERING GEAR; LUBRICATION
AND MAINTENANCE...................0-30
MANUAL STEERING GEAR; STEERING....19-37,
19-78
MANUAL STEERING GEAR
SPECIFICATIONS.....................19-46
MANUAL STEERING SYSTEM DIAGNOSIS . 19-38
MANUAL TRANSMISSION...............0-22
MANUAL TRANSMISSION, AX 15........21-33
MANUAL TRANSMISSION, AX 4/5........21-1
MANUAL TRANSMISSION, SELECTIVE
SNAP RING CHARTÐAX 15...........21-334
MANUAL TRANSMISSION UP-SHIFT
LAMP...........................8W-40-2
MANUAL VALVE SHAFT OVERHAUL.....21-215
MANUAL VALVE SHAFT SEAL
REPLACEMENT.....................21-187
MARKER LAMP BULB REPLACEMENTÐ
XJ, SIDE
...........................8L-10
MARKER LAMP BULB REPLACEMENTÐ
YJ, SIDE
...........................8L-25
MASTER CYLINDER AND COMBINATION
VALVE INSTALLATION (WITH ABS)
........5-20
MASTER CYLINDER AND COMBINATION
VALVE REMOVAL (WITH ABS)
...........5-17
MASTER CYLINDER BENCH BLEEDING
.....5-21
JINDEX 17
Description Group-Page Description Group-Page Description Group-Page

MULTI-FUNCTION SWITCH TESTING
PROCEDURESÐXJ....................8L-4
MULTI-PORT FUEL INJECTION
(MFI)ÐCOMPONENT DESCRIPTION/
SYSTEM OPERATION..................14-19
MULTI-PORT FUEL INJECTION
(MFI)ÐCOMPONENT REMOVAL/
INSTALLATION.......................14-58
MULTI-PORT FUEL INJECTION
(MFI)ÐGENERAL DIAGNOSIS...........14-35
NAMEPLATES (ADHESIVE-BACKED)ÐYJ,
EXTERIOR.........................23-120
NAMEPLATESÐXJ, EXTERIOR..........23-26
NEUTRAL SWITCH, PARK..............14-63
NO LUBRICATION, COMPONENTS
REQUIRING...........................0-2
NOISE DIAGNOSIS, 2.5L STARTER.......8A-16
NOISE DIAGNOSIS, STARTER...........8A-16
NOISE, GEAR AND BEARING; FRONT
SUSPENSION AND AXLE................2-18
NOISE, GEAR AND BEARING; REAR
SUSPENSION AND AXLES................3-9
NOISE OR VIBRATION, TIRE.............22-4
NOISE SUPPRESSION, RADIO............8F-2
NOISE/VIBRATION DIAGNOSIS, AXLE;
FRONT SUSPENSION AND AXLE..........2-18
NOISE/VIBRATION DIAGNOSIS, AXLE;
REAR SUSPENSION AND AXLES..........3-9
NO-LEAD FUEL TANK FILLER TUBE......14-13
NON-INTERMITTENT WIPE SWITCH
TESTING...........................8K-14
NON-TILT STEERING COLUMN............19-60
NORMAL BRAKING MODE, ABS
OPERATION IN.......................5-35
NORMAL OPERATING CONDITIONS........5-3
NOTATIONÐSAE AND METRIC, THREAD . Intro.-13
NOTES, CAUTIONS, AND WARNINGS;
WIRING DIAGRAMSÐGENERAL
INFORMATION (XJ)...................8W-1
NOZZLE AND DUCT, DEFROSTER........24-33
NOZZLE REMOVE/INSTALL, LIFTGATE
WASHER...........................8K-24
NOZZLE/TUBEÐXJ, FUEL FILLER........23-26
NP231 SERVICE DIAGNOSIS...........21-285
NP231 TRANSFER CASE........21-283,21-305
NP231 TRANSFER CASE, LEGEND......21-306
NP231/NP242 TORQUE SPECIFICATIONS . 21-344
NP242 SERVICE DIAGNOSIS...........21-308
NP242 TRANSFER CASE........21-307,21-331
NP242 TRANSFER CASE, LEGEND......21-332
NUMBER (VIN) DECODING, VEHICLE
IDENTIFICATION....................Intro.-4
NUMBER (VIN) PLATE, VEHICLE
IDENTIFICATION....................Intro.-4
NUT TIGHTENING, WHEEL..........5-54,5-59
NUT, WHEEL LUG....................22-12
(OHMS)ÐCOOLANT TEMPERATURE
SENSOR/MANIFOLD AIR
TEMPERATURE, SENSOR RESISTANCE
....14-46
OIL CHANGE AND FILTER
REPLACEMENT, ENGINE
................0-16
OIL COOLERS, TRANSMISSION
..........7-36
OIL, ENGINE
.........................0-15
OIL FILTER, ENGINE
...................0-17
OIL FILTER REPLACEMENT
............21-103
OIL PAN
........................9-36,9-77
OIL PRESSURE, ENGINE
.................9-7
OIL PRESSURE GAUGE
..............8W-40-2
OIL PRESSURE WARNING LAMP;
INSTRUMENT CLUSTER (XJ)
.........8W-40-2
OIL PRESSURE WARNING LAMP;
INSTRUMENT CLUSTER (XJ-RHD)
.....8W-40-1
OIL PUMP
.......................9-39,9-81
OIL PUMP OVERHAUL
.........21-131,21-216
OIL PUMP SEAL REPLACEMENT
........21-199
OIL PUMP WEAR LIMITS, AW-4
........21-338
OIL, REFRIGERANT
...................24-12
OIL SEAL REPLACEMENT, INNER AXLE
SHAFT
..............................2-35
OIL SEAL REPLACEMENT, TIMING CASE
COVER
..........................9-30,9-73
OIL SEALS, REAR MAIN
............9-49,9-89
OIL SEALS, VALVE SPRINGS
.............9-23
ON-BOARD DIAGNOSTIC SYSTEM,
USING; BATTERY/STARTING/CHARGING
SYSTEMS DIAGNOSTICS
...............8A-22ON-BOARD DIAGNOSTIC SYSTEM,
USING; VEHICLE SPEED CONTROL
SYSTEM............................8H-5
ON-BOARD DIAGNOSTICS.............8D-15
ON-BOARD DIAGNOSTICS (OBD);
COOLING SYSTEM.....................7-4
ON-BOARD DIAGNOSTICS (OBD); FUEL
SYSTEM............................14-51
ONLY, DAYTIME RUNNING LAMP (DRL)
MODULEÐCANADIAN VEHICLES;
FRONT LIGHTING (YJ)..............8W-50-2
ONLY, POWER STEERING PRESSURE
SWITCHÐ2.5L ENGINE................14-63
ONLY, TORQUE CONVERTER CLUTCH
(TCC) SOLENOID AND RELAYÐ2.5L
ENGINE; TRANSMISSION CONTROLS
(XJ).............................8W-31-1
ONLY, TRANSMISSION CONTROL
MODULEÐ4.0L ENGINE;
TRANSMISSION CONTROLS (XJ)......8W-31-1
OPENING PANEL (GOP)ÐXJ, GRILLE
AND GRILLE.........................23-3
OPENING WEATHERSTRIP SEALÐXJ,
LIFTGATE...........................23-64
OPENING WEATHERSTRIP SEALSÐXJ,
DOOR WINDOW GLASS AND DOOR......23-55
OPERATING SPECIFICATIONS, PUMP......19-3
OPERATION, ACCELERATION SWITCH.....5-37
OPERATION, AIR CONDITIONING; AIR
CONDITIONING/HEATER (XJ).........8W-42-2
OPERATION, AIR CONDITIONING; AIR
CONDITIONING/HEATER (XJ-RHD).....8W-42-2
OPERATION AND APPLICATION CHARTS,
GEARTRAIN........................21-169
OPERATION AND SERVICE, ABS..........5-33
OPERATION AND WEAR
COMPENSATION, CALIPER..............5-45
OPERATION, BRAKE WARNING LIGHT......5-5
OPERATION, CLUTCH...................6-2
OPERATION, COMPONENT
IDENTIFICATION/SYSTEM...............8D-1
OPERATION, ECU.....................5-37
OPERATION, HCU.....................5-36
OPERATION, HEATER AND A/C...........24-1
OPERATION IN ANTILOCK BRAKING
MODE, ABS..........................5-36
OPERATION IN NORMAL BRAKING
MODE, ABS..........................5-35
OPERATION, MULTI-PORT FUEL
INJECTION (MFI)ÐCOMPONENT
DESCRIPTION/SYSTEM................14-19
OPERATION, PARKING BRAKE...........5-60
OPERATION, POWER BRAKE BOOSTER....5-23
OPERATION, POWER STEERING
PUMPÐINITIAL......................19-15
OPERATION, WHEEL SPEED SENSOR......5-37
ORDERÐ2.5L 4-CYLINDER ENGINE,
ENGINE FIRING......................8D-32
ORDERÐ4.0L 6-CYLINDER ENGINE,
ENGINE FIRING......................8D-32
O-RING SEAL, FLOW CONTROL VALVE
FITTING............................19-14
ORNAMENTATION, WHEEL..............22-6
OUTER SCUFF PLATESÐXJ............23-89
OUTLET VACUUM MOTOR
REPLACEMENT, HEATER/DEFROSTER/
INSTRUMENT PANEL..................24-26
OUTPUT, AIR CONDITIONING (A/C)
CLUTCH RELAYÐPCM................14-26
OUTPUT, AUTO SHUTDOWN (ASD)
RELAYÐPCM.......................14-26
OUTPUT, DATA LINK CONNECTORÐPCM . . 14-27
OUTPUT, EMR LAMPÐPCM
............14-27
OUTPUT, FUEL INJECTORSÐPCM
.......14-27
OUTPUT, FUEL PUMP RELAYÐPCM
......14-27
OUTPUT, GENERATOR FIELDÐPCM
......14-27
OUTPUT, GENERATOR LAMPÐPCM
......14-27
OUTPUT, IDLE AIR CONTROL (IAC)
MOTORÐPCM
.......................14-27
OUTPUT, IGNITION COILÐPCM
.........14-28
OUTPUT, MALFUNCTION INDICATOR
LAMPÐPCM
........................14-28
OUTPUT, RADIATOR FAN RELAYÐPCM
. . . 14-28
OUTPUT, SCI TRANSMITÐPCM
.........14-29
OUTPUT, SHIFT INDICATORÐPCM
.......14-29
OUTPUT, SPEED CONTROLÐPCM
.......14-29
OUTPUT, TACHOMETERÐPCM
..........14-29OUTPUT, TORQUE CONVERTER CLUTCH
RELAYÐPCM.......................14-29
OUTPUT VOLTAGE SPECIFICATIONS......8A-23
OUTS, TAKE; WIRING DIAGRAMSÐ
GENERAL INFORMATION (XJ)...........8W-2
OVERDRIVE COMPONENTS, FOURTH
GEAR.............................21-167
OVERDRIVE PLANETARY GEAR AND
CLUTCH OVERHAUL.................21-218
OVERDRIVE SUPPORT OVERHAUL......21-226
OVERHAUL, 30RH/32RH TRANSMISSION . 21-119
OVERHAUL (4-CYLINDER MODELS),
MASTER CYLINDER...................5-16
OVERHAUL, ADAPTER/EXTENSION
HOUSING INSPECTION AND PARK
LOCK COMPONENT..................21-127
OVERHAUL, AW-4 TRANSMISSION......21-201
OVERHAUL, DIFFERENTIAL..............3-46
OVERHAUL, DIRECT CLUTCH..........21-228
OVERHAUL, FIRST-REVERSE BRAKE
PISTON AND TRANSMISSION CASE.....21-247
OVERHAUL, FORWARD CLUTCH........21-232
OVERHAUL, FRONT CLUTCH...........21-134
OVERHAUL, FRONT PLANETARY GEAR . . . 21-237
OVERHAUL, GOVERNOR AND PARK
GEAR.............................21-127
OVERHAUL, MANUAL VALVE SHAFT.....21-215
OVERHAUL, OIL PUMP.........21-131,21-216
OVERHAUL OR FLUID/FILTER CHANGE,
REFILLING AFTER.............21-100,21-182
OVERHAUL, OVERDRIVE PLANETARY
GEAR AND CLUTCH..................21-218
OVERHAUL, OVERDRIVE SUPPORT.....21-226
OVERHAUL, OVERRUNNING CLUTCHÐ
LOW-REVERSE DRUMÐREAR
SUPPORT.........................21-125
OVERHAUL, PLANETARY GEAR TRAIN . . . 21-141
OVERHAUL, REAR CLUTCH............21-138
OVERHAUL, REAR SERVO AND BAND . . . 21-146
OVERHAUL, TRANSFER CASE
DISASSEMBLY................21-289,21-310
OVERHAUL, TRANSMISSION
DISASSEMBLY...................21-37,21-5
OVERHAUL, TRANSMISSION VALVE
BODY.............................21-250
OVERHAUL, WHEEL CYLINDER...........5-57
OVERHEAD CONSOLE; OVERHEAD
CONSOLE (XJ)....................8W-49-1
OVERHEAD CONSOLE; OVERHEAD
CONSOLE (XJ-RHD)................8W-49-1
OVERHEAD CONSOLE REMOVE/INSTALL . . . 8C-6
OVERHEAD CONSOLEÐXJ; BODY
COMPONENTSÐXJ VEHICLES..........23-93
OVERHEAD CONSOLEÐXJ; LAMPS......8L-17
OXYGEN (O2S) SENSOR; EMISSION
CONTROL SYSTEMS...............25-6,25-7
OXYGEN (O2S) SENSOR; FUEL SYSTEM . . 14-63
OXYGEN (O2S) SENSOR; IGNITION
SYSTEMS......................8D-23,8D-5
OXYGEN (O2S) SENSOR TESTS.........8D-15
OXYGEN (O2S) SENSORÐPCM INPUT....14-24
OXYGEN SENSOR, HEATED; FUEL/
IGNITION (XJ).....................8W-30-3
OXYGEN SENSOR, HEATED; FUEL/
IGNITION (YJ).....................8W-30-3
OXYGEN SENSOR, HEATED; FUEL/
IGNITION (XJ-RHD)................8W-30-3
OXYGEN SENSOR (O2S) HEATING
ELEMENT TEST
......................14-48
PACK MEASUREMENT AND
ADJUSTMENT, DIFFERENTIAL SHIM
.......2-43
PACK REQUIREMENTS, AW-4 CLUTCH
AND BRAKE
........................21-341
PACKAGE CLUSTER, GAUGE
.......8E-31,8E-43
PAINT
............................23-158
PAINT AND TRIM REPAIR PRODUCTSÐ
XJ, AFTERMARKET
..................23-159
PAINT AND TRIM REPAIR PRODUCTSÐ
YJ, AFTERMARKET
..................23-160
PAINTED SURFACE TOUCH-UP
.........23-158
PAN, OIL
........................9-36,9-77
PANEL AND GAUGESÐYJ, INSTRUMENT
. . 8E-24
PANEL COMPONENTSÐYJ,
INSTRUMENT
......................23-152
PANEL DIMMER SWITCH REMOVE/
INSTALL, HEADLAMP OR
..............8E-42
PANEL EXTENSIONÐXJ, QUARTER TRIM
. 23-87
JINDEX 19
Description Group-Page Description Group-Page Description Group-Page

TIRE/WHEEL HOLDDOWN AND FLOOR
BRACKETSÐXJ, SPARE...............23-98
TO USE THIS GROUP, HOW; WIRING
DIAGRAMS (XJ)......................8W-1
TO USE THIS GROUP, HOW; WIRING
DIAGRAMS (XJ-RHD)..................8W-1
TO USE THIS GROUP, HOW; WIRING
DIAGRAMS (YJ)......................8W-1
TOOL, DRB SCAN; BRAKES...............5-3
TOOL, DRB SCAN; COOLING SYSTEM......7-5
TOOL, DRB SCAN; EMISSION CONTROL
SYSTEMS...........................25-2
TOOL, DRB SCAN; FUEL SYSTEM........14-54
TOOL, DRB SCAN; IGNITION SYSTEMS....8D-8
TOOLS, TROUBLESHOOTING............8W-4
TOP DOORÐYJ, HALF-METAL SOFT.....23-134
TOP LIFTGATE GLASSÐYJ, HARD......23-124
TOP QUARTER WINDOW GLASSÐYJ,
HARD.............................23-149
TOP REPAIRÐYJ, HARD..............23-127
TOP ROOF VENTÐYJ, HARD..........23-127
TOP SERVICE INFORMATIONÐYJ, SOFT . 23-127
TOP SERVICEÐYJ, SOFT.............23-129
TOPÐYJ, HARD....................23-126
TORQUE; BATTERY/STARTER/
GENERATOR SERVICE..................8B-8
TORQUE; COOLING SYSTEM.............7-46
TORQUE; FUEL SYSTEM...............14-67
TORQUE; IGNITION SYSTEMS............8D-32
TORQUE CONVERTER...........21-167,21-67
TORQUE CONVERTER CLUTCH RELAY....14-65
TORQUE CONVERTER CLUTCH RELAY
TEST..............................14-48
TORQUE CONVERTER CLUTCH
RELAYÐPCM OUTPUT................14-29
TORQUE CONVERTER CLUTCH (TCC)
SOLENOID AND RELAY; FUEL/IGNITION
(XJ).............................8W-30-4
TORQUE CONVERTER CLUTCH (TCC)
SOLENOID AND RELAY;
TRANSMISSION CONTROLS (YJ)......8W-31-1
TORQUE CONVERTER CLUTCH (TCC)
SOLENOID AND RELAYÐ2.5L ENGINE
ONLY; TRANSMISSION CONTROLS (XJ) . 8W-31-1
TORQUE CONVERTER DIAGNOSIS . . 21-86,21-87,
21-88
TORQUE CONVERTER INSTALLATION,
TRANSMISSION.....................21-199
TORQUE CONVERTER REMOVAL,
TRANSMISSION.....................21-198
TORQUE CONVERTER STALL TEST......21-178
TORQUE CONVERTER STATOR CLUTCH
INSPECTION.......................21-199
TORQUE SPECIFICATIONS; CLUTCH.......6-17
TORQUE SPECIFICATIONS; ENGINES . . 9-54,9-95
TORQUE SPECIFICATIONS; EXHAUST
SYSTEM AND INTAKE MANIFOLD........11-10
TORQUE SPECIFICATIONS; FRONT
SUSPENSION AND AXLE................2-49
TORQUE SPECIFICATIONS; HEATING AND
AIR CONDITIONING...................24-37
TORQUE SPECIFICATIONS;
INTRODUCTION............Intro.-11,Intro.-12
TORQUE SPECIFICATIONS; PROPELLER
SHAFTS............................16-15
TORQUE SPECIFICATIONS; REAR
SUSPENSION AND AXLES...............3-51
TORQUE SPECIFICATIONS; STEERING....19-78
TORQUE SPECIFICATIONS, 30RH/32RH . . 21-336
TORQUE SPECIFICATIONS, AW-4.......21-344
TORQUE SPECIFICATIONS, BRAKE........5-70
TORQUE SPECIFICATIONS,
MEASUREMENT...................Intro.-11
TORQUE SPECIFICATIONS, NP231/NP242 . 21-344
TORQUE SPECIFICATIONSÐ
ACCESSORIES......................23-162
TORQUE SPECIFICATIONSÐMANUAL
TRANSMISSION.....................21-333
TORQUE SPECIFICATIONSÐXJ
VEHICLES.........................23-161
TORQUEÐ2.5L.......................8B-8
TORQUEÐ4.0L.......................8B-8
TOUCH-UP, PAINTED SURFACE.........23-158
TOW HOOK, REAR
.....................13-9
TOW HOOKS
........................13-13
TOW HOOKS, FRONT
..................13-7
TOW, TRAILER; TRAILER TOW (XJ)
....8W-54-1
TOW, TRAILER; TRAILER TOW (XJ-RHD)
. 8W-54-1TOWING AND HOISTING, JUMP
STARTING............................0-9
TOWING, FOUR-WHEEL-DRIVE VEHICLE . . . 0-12
TOWING RECOMMENDATIONS...........0-10
TOWING SPECIFICATIONS, TRAILER....Intro.-5,
Intro.-9
TOWING WHEN KEYS ARE NOT
AVAILABLE..........................0-13
TOWINGÐXJ, TWO-WHEEL-DRIVE
VEHICLE............................0-11
(TPS)ÐPCM INPUT, THROTTLE
POSITION SENSOR...................14-25
TRACK BAR; FRONT SUSPENSION AND
AXLE...........................2-11,2-15
TRACK BAR; REAR SUSPENSION AND
AXLES...............................3-8
TRAC-LOK DIFFERENTIAL...............3-45
TRAILER HITCH......................23-77
TRAILER HITCHÐXJ..................23-77
TRAILER TOW; TRAILER TOW (XJ)....8W-54-1
TRAILER TOW; TRAILER TOW (XJ-RHD) . 8W-54-1
TRAILER TOWING SPECIFICATIONS....Intro.-5,
Intro.-9
TRANSFER CASE (4WD VEHICLES).......0-24
TRANSFER CASE ASSEMBLY....21-294,21-319
TRANSFER CASE CHANGES...........21-307
TRANSFER CASE DISASSEMBLY AND
OVERHAUL..................21-289,21-310
TRANSFER CASE IDENTIFICATION......21-284,
21-307
TRANSFER CASE INSTALLATION . . 21-288,21-309
TRANSFER CASE, LEGEND FOR NP231 . . 21-306
TRANSFER CASE, LEGEND FOR NP242 . . 21-332
TRANSFER CASE LUBRICANT AND FILL
LEVEL............................21-284
TRANSFER CASE, NP231.......21-283,21-305
TRANSFER CASE, NP242.......21-307,21-331
TRANSFER CASE REMOVAL.....21-287,21-309
TRANSFER CASE SKID PLATE.......13-15,13-3
TRANSMISSION, 30RH/32RH
AUTOMATIC.........................21-67
TRANSMISSION AND CONVERTER
INSTALLATION......................21-117
TRANSMISSION AND CONVERTER
REMOVAL.........................21-115
TRANSMISSION AND TORQUE
CONVERTER INSTALLATION...........21-199
TRANSMISSION AND TORQUE
CONVERTER REMOVAL...............21-198
TRANSMISSION APPLICATION..........21-67
TRANSMISSION ASSEMBLY AND
ADJUSTMENT............21-265,21-16,21-52
TRANSMISSION ASSEMBLY AND
ADJUSTMENT PROCEDURES..........21-155
TRANSMISSION ASSEMBLY TIPS.......21-155
TRANSMISSION, AUTOMATIC............0-23
TRANSMISSION, AW-4 AUTOMATIC.....21-165
TRANSMISSION, AX 15 MANUAL........21-33
TRANSMISSION, AX 4/5 MANUAL........21-1
TRANSMISSION CASE CLEANING AND
INSPECTION.......................21-125
TRANSMISSION CASE OVERHAUL,
FIRST-REVERSE BRAKE PISTON........21-247
TRANSMISSION CHANGES AND PARTS
INTERCHANGEABILITY................21-67
TRANSMISSION COMFORT SWITCH;
TRANSMISSION CONTROLS (XJ-RHD) . . 8W-31-1
TRANSMISSION CONTROL MODULE;
TRANSMISSION CONTROLS (XJ-RHD) . . 8W-31-1
TRANSMISSION CONTROL MODULE
(TCM) SERVICE.....................21-183
TRANSMISSION CONTROL MODULEÐ
4.0L ENGINE ONLY; TRANSMISSION
CONTROLS (XJ)...................8W-31-1
TRANSMISSION CONTROLS AND
COMPONENTS.......................21-67
TRANSMISSION COOLER FLOW TESTING . 21-113
TRANSMISSION COOLER LINE AND
FITTING SERVICE...................21-111
TRANSMISSION COOLER LINE FITTINGS . 21-197
TRANSMISSION COOLER REVERSE
FLUSHING.........................21-114
TRANSMISSION COOLER SERVICE
......21-196
TRANSMISSION DIAGNOSIS
. 21-78,21-79,21-80,
21-81,21-82,21-83,21-84,21-85
TRANSMISSION DIAGNOSIS, 30RH/32RH
. 21-70
TRANSMISSION DIAGNOSIS, AW-4
.....21-176
TRANSMISSION DISASSEMBLY
. . 21-119,21-201TRANSMISSION DISASSEMBLY AND
OVERHAUL.....................21-37,21-5
TRANSMISSION GEAR RATIOS..........21-34
TRANSMISSION IDENTIFICATION . . 21-166,21-33,
21-67,21-2
TRANSMISSION INSTALLATION.....21-36,21-5
TRANSMISSION LUBRICANT............21-34
TRANSMISSION, MANUAL..............0-22
TRANSMISSION OIL COOLERS...........7-36
TRANSMISSION OVERHAUL, 30RH/32RH . 21-119
TRANSMISSION OVERHAUL, AW-4......21-201
TRANSMISSION RANGE LAMP;
INTERIOR LIGHTING (YJ)............8W-44-1
TRANSMISSION RANGES AND SHIFT
LEVER POSITIONS...................21-166
TRANSMISSION REMOVAL.........21-35,21-3
TRANSMISSION REMOVAL AND
INSTALLATION, 30RH/32RH...........21-115
TRANSMISSION REMOVAL AND
INSTALLATION, AW-4................21-198
TRANSMISSION SHIFT PATTERN........21-34
TRANSMISSION SHIFTER/IGNITION
INTERLOCK MECHANISM, AUTOMATIC....19-55
TRANSMISSION SWITCH AND PLUG
LOCATIONS.........................21-34
TRANSMISSION THROTTLE CABLE
ADJUSTMENT......................21-194
TRANSMISSION THROTTLE CABLE
REPLACEMENT.....................21-193
TRANSMISSION THROTTLE VALVE
CABLE ADJUSTMENT...................21-71
TRANSMISSION, TORQUE
SPECIFICATIONSÐMANUAL...........21-333
TRANSMISSION UP-SHIFT LAMP,
MANUAL; INSTRUMENT CLUSTER (XJ) . 8W-40-2
TRANSMISSION VALVE BODY
INSTALLATION......................21-187
TRANSMISSION VALVE BODY
OVERHAUL........................21-250
TRANSMISSION VALVE BODY REMOVAL . 21-186
TRANSMISSION VALVE BODY
SOLENOIDS........................21-184
TRANSMISSION/TRANSFER CASE
IDENTIFICATION, ENGINE.............Intro.-5
TRANSMISSION/TRANSFER CASE
SPECIFICATIONS....................21-333
TRANSMITÐPCM OUTPUT, SCI.........14-29
TRANSMITTER, KEYLESS ENTRY . 8P-1,8P-7,8P-8
TRAVEL SENSOR, BRAKE PEDAL;
ANTI-LOCK BRAKES (YJ)............8W-32-1
TRAY LAMPÐXJ, I/P ASH RECEIVER.....23-80
TRAYÐXJ, BATTERY
..................23-14
TRAYÐYJ, BATTERY
.................23-110
TREAD WEAR INDICATORS
..............22-3
TRIM COVERSÐXJ, B/C-PILLAR AND
LIFTGATE PILLAR
....................23-88
TRIM PANEL EXTENSIONÐXJ, QUARTER
. 23-87
TRIM PANELÐXJ, DOOR
..............23-31
TRIM PANELÐXJ, FRONT INNER SCUFF
PLATE/COWL SIDE
...................23-86
TRIM PANELÐXJ, LIFTGATE
............23-59
TRIM PANELÐYJ, FULL-METAL DOOR
. . . 23-137
TRIM PANELS AND SCUFF PLATESÐXJ,
INTERIOR
..........................23-84
TRIM PANELSÐXJ, QUARTER AND
WHEELHOUSE
.......................23-87
TRIM REPAIR PRODUCTSÐXJ,
AFTERMARKET PAINT
................23-159
TRIM REPAIR PRODUCTSÐYJ,
AFTERMARKET PAINT
................23-160
TROUBLE CODE (DTC), DIAGNOSTIC
.....14-54
TROUBLE CODE, GENERATOR
DIAGNOSTIC
........................8A-22
TROUBLE CODE, SPEED CONTROL
DIAGNOSTIC
.........................8H-5
TROUBLE DIAGNOSISÐXJ, DOME/
COURTESY LAMP
....................8L-16
TROUBLE DIAGNOSISÐXJ, HEADLAMP
DELAY FUNCTION
....................8L-14
TROUBLE DIAGNOSISÐXJ, LIGHTED
VANITY MIRROR
.....................8L-16
TROUBLE DIAGNOSISÐYJ, DOME/
COURTESY LAMP
....................8L-31
TROUBLESHOOTING TESTS; WIRING
DIAGRAMSÐGENERAL INFORMATION
(XJ)
...............................8W-4
30 INDEXJ
Description Group-Page Description Group-Page Description Group-Page

BATTERY FEED
Circuit A14 from fuse 1 in the Power Distribution
Center (PDC) supplies battery voltage to cavity 3 of
the Powertrain Control Module (PCM).
HELPFUL INFORMATION
Circuit A14 also supplies power to the contact sides
of the Automatic Shut Down (ASD) relay and fuel
pump relay.
FUEL INJECTORS
When the Automatic Shut Down (ASD) relay con-
tacts close, they connect circuits A14 and A142. Cir-
cuit A142 supplies voltage to the fuel injectors. Each
injector has a separate ground circuit controlled by
the Powertrain Control Module (PCM).
Circuit K11 provides ground for injector number
one. The K11 circuit connects to cavity 16 of the
PCM.
Circuit K12 provides ground for injector number
two. The K12 circuit connects to cavity 15 of the
PCM.
Circuit K13 provides ground for injector number
three. The K13 circuit connects to cavity 14 of the
PCM.
Circuit K14 provides ground for injector number
four. The K14 circuit connects to cavity 13 of the
PCM.
On the 4.0L engine, circuit K15 provides ground for
injector number five. The K15 circuit connects to cav-
ity 38 of the PCM.
Also on the 4.0L engine, circuit K16 provides
ground for injector number six. The K16 circuit con-
nects to cavity 58 of the PCM.
HELPFUL INFORMATION
²Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil, PCM, generator, and heated
oxygen sensor.
²For information about fuel injector operation, refer
to Group 14.
IGNITION COIL
When the Automatic Shut Down (ASD) relay con-
tacts close, they connect circuits A14 and A142. Cir-
cuit A142 splices to supply voltage to the ignition
coil. The Powertrain Control Module (PCM) controls
the ground path for the ignition coil on circuit K19.
Circuit K19 connects to cavity 19 of the PCM.
HELPFUL INFORMATION
Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil, PCM, generator, and heated
oxygen sensor.
FUEL PUMP RELAY
When the ignition switch is in either the START or
RUN position, it connects circuit A1 from fuse 4 inthe Power Distribution Center (PDC) to circuit A21.
Circuit A21 powers fuse 5 in the fuse block. Circuit
G50 from fuse 5 splices to power the coil side of the
fuel pump relay. The Powertrain Control Module
(PCM) provides ground for the relay on circuit K51.
Circuit K51 connects to cavity 51 of the PCM.
When the PCM grounds the fuel pump relay, con-
tacts inside the relay close and connect circuit A14
from fuse 1 in the PDC to circuit A141. Circuit A141
supplies voltage to the fuel pump motor (part of the
in-tank fuel pump module).
HELPFUL INFORMATION
²Circuit A14 is double crimped at the fuel pump re-
lay and supplies voltage to the contact sides of the
fuel pump relay and ASD relay.
²Circuit G50 also supplies battery voltage to the
coil side of the ASD relay.
²Circuit A14 also connects to cavity 3 of the PCM.
FUEL PUMP MODULE
FUEL PUMP MOTOR
When the fuel pump relay contacts close, circuit
A141 feeds the fuel pump motor. Circuit Z2 provides
ground for the fuel pump motor.
FUEL LEVEL SENSOR
The fuel level sensor is a variable resistor. Circuit
G4 connects the fuel level sensor to the fuel gauge in
the instrument cluster. Circuit G5 from fuse 9 in the
fuse block supplies voltage to the fuel gauge. The fuel
level sensor draws voltage from circuit G5 through
the fuel gauge on circuit G4.
Circuit Z2 provides the ground path for the fuel
level sensor.
HELPFUL INFORMATION
As current flows through the coils in the fuel
gauge, it creates a magnetic field. One of the coils in
the gauge receives fixed current. The other coil is
connected to the level sensor. The magnetic field con-
trols the position of the fuel gauge pointer.
The fuel level sensor contains a variable resistor.
As the position of the float arm on the fuel level sen-
sor changes, the resistor changes the current flow
through second coil in the fuel gauge. A change in
current flow alters the magnetic field in the fuel
gauge, which changes the pointer position.
IDLE AIR CONTROL (IAC) MOTOR
The Powertrain Control Module (PCM) operates
the idle air control motor through 4 circuits - K39,
K40, K59, and K60. Each circuit connects to separate
cavities in the PCM connector.
²Circuit K39 connects to cavity 39 of the PCM.
²Circuit K40 connects to cavity 40 of the PCM.
²Circuit K59 connects to cavity 59 of the PCM.
8W - 30 - 2 8W-30 FUEL/IGNITIONÐYJ VEHICLESJ

²Circuit K60 connects to cavity 60 of the PCM.
VEHICLE SPEED SENSOR
Circuit K7 supplies 8 volts from the Powertrain
Control Module (PCM) to the vehicle speed sensor.
The K7 circuit connects to cavity 7 of the PCM.
Circuit G7 from the vehicle speed sensor provides
an input signal to the PCM. The G7 circuit connects
to cavity 47 of the PCM.
The PCM provides a ground for the vehicle speed
sensor signal (circuit G7) through circuit K4. Circuit
K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION
²Circuit G7 splices to the speedometer, and Day-
time Running Lamp module (DRL).
²Circuit K7 splices to supply 8 volts to the camshaft
position sensor and crankshaft position sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Intake air temperature sensor
HEATED OXYGEN SENSOR
When the Automatic Shut Down (ASD) relay con-
tacts close, they connect circuits A14 and A142. Cir-
cuit A142 splices to supply voltage to the heated
oxygen sensor.
Circuit K41 delivers the signal from the heated ox-
ygen sensor to the Powertrain Control Module
(PCM). Circuit K41 connects to cavity 41 of the PCM.
The PCM provides a ground for the heated oxygen
sensor signal (circuit K41) through circuit K4. Circuit
K4 connects to cavity 4 of the PCM connector.
Circuit Z1 provides a ground for the heater circuit
in the sensor. Circuit Z1 terminates at the rear of the
engine.
HELPFUL INFORMATION
²Along with supplying voltage to the ASD relay
contacts, circuit A14 supplies voltage to the contact
side of the fuel pump relay.
²Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil, and heated oxygen sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Camshaft position sensor
²Crankshaft position sensor
²Intake air temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Vehicle speed sensor
CAMSHAFT POSITION SENSOR
The Powertrain Control Module (PCM) supplies 8
volts to the camshaft position sensor (in distributor)
on circuit K7. Circuit K7 connects to cavity 7 of the
PCM.
The PCM receives the camshaft position sensor sig-
nal on circuit K44. Circuit K44 connects to cavity 44
of the PCM.
The PCM provides a ground for the camshaft posi-
tion sensor signal (circuit K44) through circuit K4.
Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION
²Circuit K7 splices to supply 8 volts to the crank-
shaft position sensor and the vehicle speed sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Crankshaft position sensor
²Intake air temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Vehicle speed sensor
CRANKSHAFT POSITION SENSOR
The Powertrain Control Module (PCM) supplies 8
volts to the crankshaft position sensor on circuit K7.
Circuit K7 connects to cavity 7 of the PCM.
The PCM receives the crankshaft position sensor
signal on circuit K24. Circuit K24 connects to cavity
24 of the PCM.
The PCM provides a ground for the crankshaft po-
sition sensor (circuit K24) through circuit K4. Circuit
K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION
²Circuit K7 splices to supply 8 volts to the crank-
shaft position sensor and the vehicle speed sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Camshaft position sensor
²Intake air temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Vehicle speed sensor
ENGINE COOLANT TEMPERATURE SENSOR
The engine coolant temperature sensor provides an
input to the Powertrain Control Module (PCM) on
circuit K2. From circuit K2, the engine coolant tem-
perature sensor draws up to 5 volts from the PCM.
The sensor is a variable resistor. As coolant temper-
ature changes, the resistance in the sensor changes,
causing a change in current draw. The K2 circuit
connects to cavity 2 of the PCM.
J8W-30 FUEL/IGNITIONÐYJ VEHICLES 8W - 30 - 3

The PCM provides a ground for the engine coolant
temperature sensor signal (circuit K2) through circuit
K4. Circuit K4 connects to cavity 4 of the PCM con-
nector.
HELPFUL INFORMATION
Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Intake air temperature sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Vehicle speed sensor
THROTTLE POSITION SENSOR
From the Powertrain Control Module (PCM), cir-
cuit K6 supplies 5 volts to the Throttle Position Sen-
sor (TPS). Circuit K6 connects to cavity 6 of the
PCM.
Circuit K22 delivers the TPS signal to the PCM.
Circuit K22 connects to cavity 22 of the PCM.
The PCM provides a ground for the throttle posi-
tion sensor signal (circuit K22) through circuit K4.
Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION
Refer to Group 14 for throttle position sensor oper-
ation.
Circuit K6 splices to supply 5 volts to the Manifold
Absolute Pressure (MAP) sensor.
Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Intake air temperature sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Vehicle speed sensor
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
From the Powertrain Control Module (PCM), cir-
cuit K6 supplies 5 volts to the Manifold Absolute
Pressure (MAP) sensor. Circuit K6 connects to cavity
6 of the PCM.
Circuit K1 delivers the MAP signal to the PCM.
Circuit K1 connects to cavity 1 of the PCM.
The PCM provides a ground for the MAP sensor
signal (circuit K1) through circuit K4. Circuit K4 con-
nects to cavity 4 of the PCM.
HELPFUL INFORMATION
Refer to Group 14 for MAP sensor operation.
Circuit K6 splices to supply 5 volts to the throttle
position sensor.Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Intake air temperature sensor
²Throttle position sensor
²Engine coolant temperature sensor
²Vehicle speed sensor
INTAKE AIR TEMPERATURE SENSOR
The intake air temperature sensor provides an in-
put to the Powertrain Control Module (PCM) on cir-
cuit K21. Circuit K21 connects to cavity 21 of the
PCM.
From circuit K21, the intake air temperature sen-
sor draws voltage from the PCM. The sensor is a
variable resistor. As intake air temperature changes,
the resistance in the sensor changes, causing a
change in current draw.
The PCM provides a ground for the intake air tem-
perature sensor signal (circuit K21) through circuit
K4. Circuit K4 connects to cavity 4 of the PCM.
HELPFUL INFORMATION
Circuit K4 splices to supply ground for the signals
from the following:
²Heated oxygen sensor
²Camshaft position sensor
²Crankshaft position sensor
²Throttle position sensor
²Manifold absolute pressure sensor
²Engine coolant temperature sensor
²Vehicle speed sensor
PARK/NEUTRAL POSITION SWITCH
When closed, the case-grounded park/neutral posi-
tion switch provides a ground path on circuit T41 for
the coil side of the starter motor relay. Circuit A41
from the ignition switch provides battery voltage to
the coil side of the relay.
Circuit T41 splices to cavity 30 of the Powertrain
Control Module (PCM). The park/neutral position
switch provides an input to the (PCM).
HELPFUL INFORMATION
²In the START position, the ignition switch con-
nects circuit A1 from the Power Distribution Center
(PDC) to circuit A41. Fuse 4 in the fuse block pro-
tects circuits A1 and A41.
²The Park/Neutral position switch and back-up
lamp switch are molded together.
POWER STEERING PRESSURE SWITCH
The Powertrain Control Module (PCM) supplies
voltage to the power steering pressure switch on cir-
cuit K10. Circuit Z1 provides ground for the switch.
When the switch closes, voltage flows through the
8W - 30 - 4 8W-30 FUEL/IGNITIONÐYJ VEHICLESJ

HEATED REAR WINDOW
HEATED REAR WINDOW
The heated rear window relay supplies power to
heated rear window grid. When the operator presses
the heated rear window switch, the contacts inside
the switch momentarily close and circuit C16 con-
nects the relay timer to ground on circuit Z1. This
causes the relay to change state and complete a cir-
cuit to energize the coil side of the relay and start
the relay timer. Circuit G5 from fuse 9 in the fuse
block supplies voltage to the coil side of the relay.
Circuit Z1 provides ground for the relay.
When the heated rear window relay energizes, the
contacts inside the relay close and connect circuit
F32 to circuit C15. Fuse 3 in the fuse block protects
circuit F32.
Circuit C15 is double crimped at the heated rear
window relay. One branch of circuit C15 powers the
indicator lamp in the heated rear window switch.
The other branch of circuit C15 powers the heated
rear window grid. Circuit Z1 provides ground for the
heated rear window grid.
At the rear window grid, circuits C15 and Z1 pass
through lift gate support struts.
HELPFUL INFORMATION
²When the ignition switch is in the START or RUN
positions, it connects circuit A1 from fuse 4 in the
Power Distribution Center (PDC) to circuit A21. Cir-
cuit A21 supplies battery voltage to the fuse block
bus bar that powers circuit G5 through the fuse in
cavity 9.
²Circuit A6 from PDC fuse 3 supplies battery volt-
age to the fuse block bus bar that feeds fuse 3 and
circuit F32. Check fuse 3 in the PDC and fuse 3 in
the fuse block.
²Check for broken grid lines on the window.
²Check for a broken bus bar or disconnected leads
at the rear window.
²Check for a good ground.
DIAGRAM INDEX
Component Page
Fuse 3 (PDC)...........................8W-48-2
Fuse 4 (PDC)...........................8W-48-2
Fuse 6 (Fuse Block).......................8W-48-2
Fuse 9 (Fuse Block).......................8W-48-2
Heated Rear Window Relay..................8W-48-2
Heated Rear Window Grid...................8W-48-3
Heated Rear Window Switch.................8W-48-3
J8W-48 HEATED REAR WINDOWÐYJ VEHICLES 8W - 48 - 1