2002 JEEP LIBERTY Throttle position sensor location

of the firing of the fuel injectors. It isnot usedas a
fuel pressure regulator. The fuel pressure regulator is
not mountedto the fuel rail on any engine. It is
located on the fuel tank mounted fuel pump module.
Refer to Fuel Pressure Regulator for additional infor-
mation.
The fuel rail is not repairable.
A quick-connect fitting with a safety latch is used
to attach the fuel line to the fuel rail.
3.7L
High pressure fuel from the fuel pump is routed to
the fuel rail. The fuel rail then supplies the neces-
sary fuel to each individual fuel injector.
A quick-connect fitting with a safety latch is used
to attach the fuel line to the fuel rail.
The fuel rail is not repairable.
REMOVAL
2.4L
WARNING: THE FUEL SYSTEM IS UNDER CON-
STANT PRESSURE EVEN WITH ENGINE OFF.
BEFORE SERVICING FUEL RAIL, FUEL SYSTEM
PRESSURE MUST BE RELEASED.
The fuel rail can be removed without removing the
intake manifold if the following procedures are fol-
lowed.(1) Remove fuel tank filler tube cap.
(2) Perform Fuel System Pressure Release Proce-
dure.
(3) Remove negative battery cable at battery.
(4) Remove air duct at throttle body.
(5) Disconnect fuel line latch clip and fuel line at
fuel rail. A special tool will be necessary for fuel line
disconnection. Refer to Quick-Connect Fittings.
(6) Remove necessary vacuum lines at throttle
body.
(7) Drain engine coolant and remove thermostat
and thermostat housing.
(8) Remove PCV hose and valve at valve cover.
(9) Remove 3 upper intake manifold mounting
bolts (Fig. 35), but only loosen 2 lower bolts about 2
turns.
(10) Disconnect 2 main engine harness connectors
at rear of intake manifold (Fig. 34).
(11) Disconnect 2 injection wiring harness clips at
harness mounting bracket (Fig. 35).
(12) Disconnect electrical connectors at all 4 fuel
injectors. To remove connector refer to (Fig. 37). Push
red colored slider away from injector (1). While push-
ing slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
(13) Remove 2 injection rail mounting bolts (Fig.
31).
Fig. 34 MAP SENSOR LOCATION-2.4L
1 - REAR OF INTAKE MANIFOLD
2 - MAP SENSOR
3 - ALIGNMENT PIN
4 - MOUNTING BOLT (TORX)
5 - ELECTRICAL CONNECTOR
6 - MAIN ENGINE HARNESS CONNECTORS
Fig. 35 FUEL RAIL MOUNTING-2.4L
1 - FUEL RAIL
2 - INJECTION HARNESS CLIPS
3 - LOWER MOUNTING HOLES
4 - UPPER MOUNTING HOLES
5 - INTAKE MANIFOLD
14 - 22 FUEL DELIVERYKJ
FUEL RAIL (Continued)

(14) Gently rock and pull fuel rail until fuel injec-
tors just start to clear machined holes in intake man-
ifold.
(15) Remove fuel rail (with injectors attached)
from intake manifold.
(16) If fuel injectors are to be removed, refer to
Fuel Injector Removal/Installation.
3.7L
WARNING: THE FUEL SYSTEM IS UNDER CON-
STANT PRESSURE EVEN WITH ENGINE OFF.
BEFORE SERVICING FUEL RAIL, FUEL SYSTEM
PRESSURE MUST BE RELEASED.
CAUTION: The left and right fuel rails are replaced
as an assembly. Do not attempt to separate rail
halves at connector tube (Fig. 36). Due to design of
tube, it does not use any clamps. Never attempt to
install a clamping device of any kind to tube. When
removing fuel rail assembly for any reason, be care-
ful not to bend or kink tube.
(1) Remove fuel tank filler tube cap.
(2) Perform Fuel System Pressure Release Proce-
dure.
(3) Remove negative battery cable at battery.
(4) Remove air duct at throttle body air box.
(5) Remove air box at throttle body.
(6) Disconnect fuel line latch clip and fuel line at
fuel rail. A special tool will be necessary for fuel line
disconnection. Refer to Quick-Connect Fittings.
(7) Remove necessary vacuum lines at throttle
body.
(8) Disconnect electrical connectors at all 6 fuel
injectors. To remove connector refer to (Fig. 37). Push
red colored slider away from injector (1). While push-
ing slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
(9) Disconnect electrical connectors at throttle
body sensors.
(10) Remove 6 ignition coils. Refer to Ignition Coil
Removal/Installation.
(11) Remove 4 fuel rail mounting bolts (Fig. 36).
(12) Gently rock and pullleftside of fuel rail until
fuel injectors just start to clear machined holes in
cylinder head. Gently rock and pullrightside of rail
until injectors just start to clear cylinder head holes.
Repeat this procedure (left/right) until all injectors
have cleared cylinder head holes.
(13) Remove fuel rail (with injectors attached)
from engine.
Fig. 36 FUEL RAIL REMOVE/INSTALL - 3.7L
1 - MOUNTING BOLTS (4)
2 - QUICK-CONNECT FITTING
3 - FUEL RAIL
4 - INJ. #1
5 - INJ. #3
6 - INJ. #5
7 - INJ. #2
8 - INJ. #4
9 - INJ. #6
10 - CONNECTOR TUBE
Fig. 37 REMOVE/INSTALL INJECTOR CONNECTOR
KJFUEL DELIVERY 14 - 23
FUEL RAIL (Continued)

INSTALLATION
(1) Place accelerator pedal assembly over 2 studs
(Fig. 1) protruding from floor pan.
(2) Install 2 mounting nuts. Refer to torque speci-
fications.
(3) Slide throttle cable into opening slot in top of
pedal arm.
(4) Push plastic cable retainer (clip) into accelera-
tor pedal arm opening until it snaps into place.
(5) Before starting engine, operate accelerator
pedal to check for any binding.
CRANKSHAFT POSITION
SENSOR
DESCRIPTION
2.4L
The Crankshaft Position (CKP) sensor is mounted
into the right front side of the cylinder block (Fig. 2).
It is positioned and bolted into a machined hole.
3.7L
The Crankshaft Position (CKP) sensor is mounted
into the right rear side of the cylinder block (Fig. 3).
It is positioned and bolted into a machined hole.
Fig. 1 ACCELERATOR PEDAL/BRACKET ASSEMBLY
1 - METAL THROTTLE CABLE CLIP
2 - THROTTLE CABLE
3 - PLASTIC CABLE RETAINER
4 - PEDAL/BRACKET ASSEMBLY
5 - PEDAL MOUNTING NUTS (2)
6 - PEDAL MOUNTING STUDS (2)
Fig. 2 CKP SENSOR LOCATION-2.4L
1 - RIGHT FRONT ENGINE MOUNT
2 - CKP SENSOR
3 - MOUNTING BOLT
4 - ELECTRICAL CONNECTOR
Fig. 3 CKP - 3.7L
1 - MOUNTING BOLT
2 - CKP SENSOR
3 - O-RING
14 - 30 FUEL INJECTIONKJ
ACCELERATOR PEDAL (Continued)

SEAL - INSTALLATION, REAR OUTPUT
SHAFT............................21-212
SEAL - NV1500 - INSTALLATION,
EXTENSION HOUSING.................21-32
SEAL - NV1500 - REMOVAL, EXTENSION
HOUSING...........................21-32
SEAL - NV3550 - INSTALLATION,
EXTENSION HOUSING.................21-74
SEAL - NV3550 - REMOVAL, EXTENSION
HOUSING...........................21-74
SEAL - REAR - INSTALLATION,
CRANKSHAFT OIL.....................9-48
SEAL - REAR - REMOVAL, CRANKSHAFT
OIL ................................9-48
SEAL - REMOVAL, ADAPTER HOUSING . . 21-124
SEAL - REMOVAL, A-PILLAR...........23-185
SEAL - REMOVAL, COWL/PLENUM......23-187
SEAL - REMOVAL, COWL/PLENUM
WINDOW BAFFLE...................23-187
SEAL - REMOVAL, FRONT OUTPUT
SHAFT......................21-208,21-246
SEAL - REMOVAL, GLASS PANEL.......23-178
SEAL - REMOVAL, OIL PUMP FRONT....21-152
SEAL - REMOVAL, PINION.....3-102,3-38,3-68
SEAL - REMOVAL, REAR OUTPUT SHAFT . 21-210
SEAL AREA LEAKS - DIAGNOSIS AND
TESTING, REAR.......................9-61
SEALER LOCATIONS - SPECIFICATIONS . . . 23-87
SEALS - DESCRIPTION, VALVE GUIDE . 9-29,9-38
SEALS - INSTALLATION, AXLE SHAFT....3-102,
3-38
SEALS - REMOVAL, AXLE SHAFT....3-101,3-37
SEAT - FRONT - INSTALLATION........23-165
SEAT - FRONT - REMOVAL............23-165
SEAT - REAR - INSTALLATION.........23-168
SEAT - REAR - REMOVAL.............23-168
SEAT BACK - FRONT - INSTALLATION . . . 23-166
SEAT BACK - FRONT - REMOVAL.......23-166
SEAT BACK - REAR - INSTALLATION....23-168
SEAT BACK - REAR - REMOVAL........23-168
SEAT BACK COVER - FRONT -
INSTALLATION......................23-167
SEAT BACK COVER - FRONT - REMOVAL . 23-166
SEAT BACK COVER - REAR -
INSTALLATION......................23-169
SEAT BACK COVER - REAR - REMOVAL . . 23-169
SEAT BACK CUSHION - FRONT -
INSTALLATION......................23-167
SEAT BACK CUSHION - FRONT -
REMOVAL.........................23-167
SEAT BACK CUSHION - REAR -
INSTALLATION......................23-170
SEAT BACK CUSHION - REAR -
REMOVAL.........................23-170
SEAT BACK FRAME - REAR -
INSTALLATION......................23-171
SEAT BACK FRAME - REAR - REMOVAL . . 23-171
SEAT BACK LATCH / LOCK -
INSTALLATION, FOLDING REAR........23-170
SEAT BACK LATCH / LOCK - REMOVAL,
FOLDING REAR.....................23-170
SEAT BACK LATCH STRIKER -
INSTALLATION, REAR................23-171
SEAT BACK LATCH STRIKER - REMOVAL,
REAR.............................23-170
SEAT BACK RECLINER - FRONT -
INSTALLATION......................23-166
SEAT BACK RECLINER - FRONT -
REMOVAL.........................23-166
SEAT BELT & RETRACTOR -
INSTALLATION, FRONT................8O-24
SEAT BELT & RETRACTOR -
INSTALLATION, REAR CENTER..........8O-33
SEAT BELT & RETRACTOR -
INSTALLATION, REAR OUTBOARD.......8O-34
SEAT BELT & RETRACTOR - REMOVAL,
FRONT.............................8O-23
SEAT BELT & RETRACTOR - REMOVAL,
REAR CENTER.......................8O-32
SEAT BELT & RETRACTOR - REMOVAL,
REAR OUTBOARD....................8O-33
SEAT BELT BUCKLE - INSTALLATION,
FRONT
.............................8O-26
SEAT BELT BUCKLE - INSTALLATION,
REAR
..............................8O-35
SEAT BELT BUCKLE - REMOVAL, FRONT
. . 8O-25
SEAT BELT BUCKLE - REMOVAL, REAR
. . . 8O-34
SEAT BELT SWITCH - DESCRIPTION
.....8O-35SEAT BELT SWITCH - OPERATION.......8O-36
SEAT BELT TENSIONER - DESCRIPTION . . . 8O-36
SEAT BELT TENSIONER - OPERATION....8O-36
SEAT BELT TURNING LOOP ADJUSTER -
INSTALLATION......................8O-38
SEAT BELT TURNING LOOP ADJUSTER -
REMOVAL..........................8O-37
SEAT CUSHION - FRONT -
INSTALLATION......................23-167
SEAT CUSHION - FRONT - REMOVAL....23-167
SEAT CUSHION - REAR - INSTALLATION . 23-171
SEAT CUSHION - REAR - REMOVAL.....23-171
SEAT CUSHION COVER - FRONT -
INSTALLATION......................23-167
SEAT CUSHION COVER - FRONT -
REMOVAL.........................23-167
SEAT CUSHION SIDE SHIELDS -
INSTALLATION......................23-167
SEAT CUSHION SIDE SHIELDS -
REMOVAL.........................23-167
SEAT ELEMENT - DESCRIPTION, HEATED . 8G-13
SEAT ELEMENT - DIAGNOSIS AND
TESTING, HEATED....................8G-13
SEAT ELEMENT - OPERATION, HEATED . . . 8G-13
SEAT HEATER SWITCH - DESCRIPTION,
DRIVER............................8G-11
SEAT HEATER SWITCH - DESCRIPTION,
PASSENGER........................8G-14
SEAT HEATER SWITCH - INSTALLATION,
DRIVER............................8G-13
SEAT HEATER SWITCH - INSTALLATION,
PASSENGER........................8G-15
SEAT HEATER SWITCH - OPERATION,
DRIVER............................8G-12
SEAT HEATER SWITCH - OPERATION,
PASSENGER........................8G-14
SEAT HEATER SWITCH - REMOVAL,
DRIVER............................8G-13
SEAT HEATER SWITCH - REMOVAL,
PASSENGER........................8G-15
SEAT MODULE - DESCRIPTION, HEATED . . 8E-21
SEAT MODULE - DIAGNOSIS AND
TESTING, HEATED....................8E-22
SEAT MODULE - INSTALLATION, HEATED . . 8E-24
SEAT MODULE - OPERATION, HEATED....8E-21
SEAT MODULE - REMOVAL, HEATED.....8E-24
SEAT RISER - INSTALLATION, MANUAL . . 23-168
SEAT RISER - REMOVAL, MANUAL......23-167
SEAT SENSOR - DIAGNOSIS AND
TESTING, HEATED....................8G-14
SEAT SWITCH - DESCRIPTION, LEFT
POWER............................8N-16
SEAT SWITCH - DESCRIPTION, RIGHT
POWER............................8N-19
SEAT SWITCH - DIAGNOSIS AND
TESTING, HEATED..............8G-12,8G-14
SEAT SWITCH - DIAGNOSIS AND
TESTING, LEFT POWER...............8N-17
SEAT SWITCH - DIAGNOSIS AND
TESTING, RIGHT POWER..............8N-19
SEAT SWITCH - INSTALLATION, LEFT
POWER............................8N-18
SEAT SWITCH - INSTALLATION, RIGHT
POWER............................8N-20
SEAT SWITCH - OPERATION, LEFT
POWER............................8N-17
SEAT SWITCH - OPERATION, RIGHT
POWER............................8N-19
SEAT SWITCH - REMOVAL, LEFT POWER . 8N-18
SEAT SWITCH - REMOVAL, RIGHT
POWER............................8N-20
SEAT SYSTEM - DESCRIPTION, HEATED . . 8G-10
SEAT SYSTEM - DIAGNOSIS AND
TESTING, HEATED
....................8G-11
SEAT SYSTEM - OPERATION, HEATED
....8G-10
SEAT TRACK - DESCRIPTION
...........8N-15
SEAT TRACK - DIAGNOSIS AND TESTING
. 8N-16
SEAT TRACK - INSTALLATION
..........23-168
SEAT TRACK - INSTALLATION
..........8N-16
SEAT TRACK - OPERATION
.............8N-15
SEAT TRACK - REMOVAL
.............23-168
SEAT TRACK - REMOVAL
..............8N-16
SEATBELT INDICATOR - DESCRIPTION
....8J-27
SEATBELT INDICATOR - OPERATION
......8J-28
SEATS - DESCRIPTION, INTAKE/
EXHAUST VALVES
.....................9-26
SEATS - DESCRIPTION, POWER
.........8N-14SEATS - DIAGNOSIS AND TESTING,
POWER............................8N-15
SEATS - INSTALLATION, INTAKE/
EXHAUST VALVES.................9-28,9-36
SEATS - OPERATION, POWER..........8N-15
SEATS - REMOVAL, INTAKE/EXHAUST
VALVES .........................9-27,9-35
SECTION IDENTIFICATION AND
INFORMATION - DESCRIPTION........8W-01-6
SECURITY - DESCRIPTION, VEHICLE
THEFT..............................8Q-1
SECURITY - OPERATION, VEHICLE THEFT . . 8Q-3
SECURITY INDICATOR - DESCRIPTION....8J-28
SECURITY INDICATOR - OPERATION.....8J-28
SECURITY SYSTEM - DIAGNOSIS AND
TESTING, VEHICLE THEFT..............8Q-6
SENDING UNIT - DIAGNOSIS AND
TESTING, FUEL LEVEL.................14-9
SENDING UNIT / SENSOR -
DESCRIPTION, FUEL LEVEL.............14-9
SENDING UNIT / SENSOR -
INSTALLATION, FUEL LEVEL............14-10
SENDING UNIT / SENSOR - OPERATION,
FUEL LEVEL..........................14-9
SENDING UNIT / SENSOR - REMOVAL,
FUEL LEVEL..........................14-9
SENSE - DESCRIPTION, IGNITION
CIRCUIT............................8E-13
SENSE - OPERATION, IGNITION CIRCUIT . . 8E-15
SENSE - PCM INPUT - OPERATION, ASD . . . 8I-4
SENSITIVE DEVICES - STANDARD
PROCEDURE, ELECTROSTATIC
DISCHARGE (ESD).................8W-01-8
SENSOR - DESCRIPTION, AMBIENT
TEMP..............................8M-9
SENSOR - DESCRIPTION, BATTERY
TEMPERATURE......................8F-24
SENSOR - DESCRIPTION, CRANKSHAFT
POSITION..........................14-30
SENSOR - DESCRIPTION, ENGINE
COOLANT TEMPERATURE...............7-19
SENSOR - DESCRIPTION, FRONT
IMPACT............................8O-21
SENSOR - DESCRIPTION, FUEL LEVEL
SENDING UNIT.......................14-9
SENSOR - DESCRIPTION, INPUT SPEED . 21-143
SENSOR - DESCRIPTION, INTAKE AIR
TEMPERATURE......................14-36
SENSOR - DESCRIPTION, KNOCK........8I-11
SENSOR - DESCRIPTION, LINE
PRESSURE (LP)....................21-144
SENSOR - DESCRIPTION, MAP..........14-38
SENSOR - DESCRIPTION, OUTPUT
SPEED............................21-152
SENSOR - DESCRIPTION, OXYGEN.......14-40
SENSOR - DESCRIPTION, POSITION....21-209,
21-247
SENSOR - DESCRIPTION, THROTTLE
POSITION..........................14-47
SENSOR - DESCRIPTION,
TRANSMISSION RANGE..............21-168
SENSOR - DESCRIPTION,
TRANSMISSION TEMPERATURE........21-170
SENSOR - DIAGNOSIS AND TESTING,
AMBIENT TEMPERATURE...............8M-9
SENSOR - DIAGNOSIS AND TESTING,
HEATED SEAT .......................8G-14
SENSOR - INSTALLATION, BATTERY
TEMPERATURE......................8F-24
SENSOR - INSTALLATION, CRANKSHAFT
POSITION..........................14-32
SENSOR - INSTALLATION, ENGINE
COOLANT TEMPERATURE...............7-21
SENSOR - INSTALLATION, FRONT
IMPACT............................8O-22
SENSOR - INSTALLATION, FRONT
WHEEL SPEED........................5-34
SENSOR - INSTALLATION, FUEL LEVEL
SENDING UNIT......................14-10
SENSOR - INSTALLATION, INPUT SPEED . 21-143
SENSOR - INSTALLATION, INTAKE AIR
TEMPERATURE
......................14-38
SENSOR - INSTALLATION, KNOCK
........8I-12
SENSOR - INSTALLATION, LINE
PRESSURE (LP)
....................21-144
SENSOR - INSTALLATION, MAP
.........14-40
SENSOR - INSTALLATION, OUTPUT
SPEED
............................21-152
KJINDEX 23
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