2002 JEEP LIBERTY belt

A/C-HEATER CONTROL C2 - BLACK 12 WAY
CAV CIRCUIT FUNCTION
1 C35 20DG/YL MODE DOOR DRIVER (A)
2 V23 20BR/PK FUSED IGNITION SWITCH OUTPUT (RUN)
3- -
4- -
5- -
6 C79 20VT/BK REAR WINDOW DEFOGGER CONTROL
7- -
8 Z12 20BK/TN GROUND
9- -
10 - -
11 - -
12 C16 20LB/YL FUSED REAR WINDOW DEFOGGER RELAY OUTPUT
ACCELERATOR PEDAL POSITION SENSOR (DIESEL) - BLACK 10 WAY
CAV CIRCUIT FUNCTION
1- -
2- -
3- -
4 K4 18BK/LB SENSOR GROUND
5 K151 20WT LOW IDLE POSITION SWITCH SENSE
6- -
7 K81 20VT/TN ACCELERATOR PEDAL POSITION SENSOR SIGNAL
8 K255 20WT/DG ACCELERATOR PEDAL POSITION SENSOR GROUND
9- -
10 K852 20VT/WT ACCELERATOR PEDAL POSITION SENSOR 5 VOLT
SUPPLY
AIRBAG CONTROL MODULE C1 (ORC C1) - YELLOW 23 WAY
CAV CIRCUIT FUNCTION
1 R45 18DG/LB DRIVER SQUIB 1 LINE 2
2 R43 18BK/LB DRIVER SQUIB 1 LINE 1
3- -
4- -
5 R53 18OR/YL DRIVER SEAT BELT TENSIONER LINE 2
6 R55 18OR/BK DRIVER SEAT BELT TENSIONER LINE 1
7 R61 18OR/LB DRIVER SQUIB 2 LINE 1
8 R63 18TN/LB DRIVER SQUIB 2 LINE 2
9 R62 18OR/YL PASSENGER SQUIB 2 LINE 2
10 R64 18TN/YL PASSENGER SQUIB 2 LINE 1
11 R42 18BK/YL PASSENGER SQUIB 1 LINE 1
12 R44 18DG/YL PASSENGER SQUIB 1 LINE 2
13 - -
14 F14 18LG/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
15 F23 18DB/YL FUSED IGNITION SWITCH OUTPUT (RUN)
16 Z6 18BK/PK GROUND
8Wa - 80 - 6 8W-80 CONNECTOR PIN-OUTSKJ

AIRBAG CONTROL MODULE C1 (ORC C1) - YELLOW 23 WAY
CAV CIRCUIT FUNCTION
17 - -
18 - -
19 - -
20 - -
21 D25 18YL/VT/OR PCI BUS
22 - -
23 - -
AIRBAG CONTROL MODULE C2 (ORC C2) - BLACK 12 WAY
CAV CIRCUIT FUNCTION
1- -
2 R59 20LB DRIVER SEAT BELT SWITCH GROUND
3 R57 20DG DRIVER SEAT BELT SWITCH SENSE
4- -
5 R60 20VT PASSENGER SEAT BELT SWITCH GROUND
6 R58 20GY PASSENGER SEAT BELT SWITCH SENSE
7 R48 20TN RIGHT FRONT IMPACT SENSOR SIGNAL
8 R46 20BR/LB RIGHT FRONT IMPACT SENSOR GROUND
9- -
10 - -
11 R47 20DB/LB LEFT FRONT IMPACT SENSOR GROUND
12 R49 20LB/OR LEFT FRONT IMPACT SENSOR SIGNAL
AMBIENT TEMPERATURE SENSOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G31 18VT/LG AMBIENT TEMPERATURE SENSOR SIGNAL
2 G32 18DB/OR AMBIENT TEMPERATURE SENSOR RETURN
ANTENNA (EXCEPT BUILT-UP-EXPORT)-2WAY
CAV CIRCUIT FUNCTION
1 X30 BK RADIO ANTENNA CORE
2 X31 BK RADIO ANTENNA SHIELD
KJ8W-80 CONNECTOR PIN-OUTS8Wa-80-7

DOME LAMP (BASE) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1- -
2 M1 20PK FUSED B(+)
3 M2 20YL COURTESY LAMP DRIVER
DRIVER AIRBAG SQUIB1-GRAY2WAY
CAV CIRCUIT FUNCTION
1 R45 18DG/LB DRIVER SQUIB 1 LINE 2
2 R43 18BK/LB DRIVER SQUIB 1 LINE 1
DRIVER AIRBAG SQUIB 2 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 R63 18TN/LB DRIVER SQUIB 2 LINE 2
2 R61 18OR/LB DRIVER SQUIB 2 LINE 1
DRIVER SEAT BELT SWITCH - LT. GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 R57 18DG DRIVER SEAT BELT SWITCH SENSE
2 R59 18LB DRIVER SEAT BELT SWITCH GROUND
DRIVER SEAT BELT TENSIONER - YELLOW 2 WAY
CAV CIRCUIT FUNCTION
1 R55 18OR/BK DRIVER SEAT BELT TENSIONER LINE 1
2 R53 18OR/YL DRIVER SEAT BELT TENSIONER LINE 2
8Wa - 80 - 54 8W-80 CONNECTOR PIN-OUTSKJ

PASSENGER SEAT BELT SWITCH - LT. GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 R58 18GY (EXCEPT BASE) PASSENGER SEAT BELT SWITCH SENSE
1 R58 18DG (BASE) PASSENGER SEAT BELT SWITCH SENSE
2 R60 18LB (BASE) PASSENGER SEAT BELT SWITCH GROUND
2 R60 18VT (EXCEPT BASE) PASSENGER SEAT BELT SWITCH GROUND
POWER MIRROR SWITCH (EXCEPT BASE) - WHITE 10 WAY
CAV CIRCUIT FUNCTION
1 P75 20LB/WT LEFT MIRROR LEFT DRIVER
2 P71 20YL/DG LEFT MIRROR UP DRIVER
3 Z351 18BK/LG (RHD) GROUND
3 Z350 18BK/LG (LHD) GROUND
4 P110 18YL (FOLD) FOLDING MIRROR RETURN
5 V23 20BR/PK FUSED IGNITION SWITCH OUTPUT (RUN)
6 P76 18OR/YL MIRROR COMMON DRIVER
7 P99 18GY (FOLD) FOLDING MIRROR FEED
8- -
9 P72 20YL/BK (FOLD) RIGHT MIRROR UP DRIVER
9 P72 18YL/BK (WITHOUT FOLD) RIGHT MIRROR UP DRIVER
10 P74 20DB (FOLD) RIGHT MIRROR LEFT DRIVER
10 P74 18DB (WITHOUT FOLD) RIGHT MIRROR LEFT DRIVER
POWER OUTLET - RED 3 WAY
CAV CIRCUIT FUNCTION
1 F38 16RD/WT FUSED B(+)
1 F41 16PK/VT FUSED B(+)
2- -
2- -
3 Z3 16BK/OR GROUND
3 Z151 16BK/WT GROUND
POWER STEERING PRESSURE SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K10 18DB/OR POWER STEERING PRESSURE SWITCH SENSE
2 Z246 18BK/GY GROUND
8Wa - 80 - 80 8W-80 CONNECTOR PIN-OUTSKJ

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Coil On Plug No.5 (3.7L) BK Left Side of Engine Near
Fuel Injector No.51
Coil On Plug No.6 (3.7L) BK Right Side of Engine Near
Fuel Injector No.62
Coil Rail (2.4L) BK Right Side of Engine 11, 12
Combination Flasher WT Under Left Side of
Instrument PanelN/S
Compass Mini-Trip Computer BK At Overhead Console N/S
Controller Antilock Brake BK Left Side of Engine
Compartment30
Crankshaft Position Sensor (2.4L) BK Top of Engine N/S
Crankshaft Position Sensor (3.7L) BK Right Lower Side of Engine 4
Crankshaft Position Sensor (Diesel) BK Right Rear Side of Engine 17
Data Link Connector BK Under Center of Instrument
PanelN/S
Diagnostic Junction Port BK Under Center of Instrument
Panel49
Dome Lamp (Base) BK On Headliner N/S
Driver Airbag Squib 1 GY In Steering Wheel N/S
Driver Airbag Squib 2 BK In Steering Wheel N/S
Driver Seat Belt Switch LG At Drive Seat N/S
Driver Seat Belt Tensioner (LHD) YL Lower Left B-Pillar 35
Driver Seat Belt Tensioner (RHD) YL Lower Right B-Pillar 39
EGR Solenoid Right Rear Side of Engine
Compartment27
Engine Control Module C1 BK Left Rear Side of Engine
Compartment19
Engine Control Module C2 BK Left Rear Side of Engine
Compartment19
Engine Coolant Level Sensor (Diesel) LG Rear Side of Engine
Compartment18
Engine Coolant Temperature Sensor
(Diesel)BK Left Side of Engine 20
Engine Coolant Temperature Sensor
(Gas)BK Front Side of Engine 2
Engine Oil Pressure Sensor (2.4L) BK Top of Engine N/S
Engine Oil Pressure Sensor (3.7L) BK Left Front Side of Engine 3
Engine Oil Pressure Sensor (Diesel) BK Right Rear Side of Engine 17
Engine Starter Motor Right Front Side of Engine 20
Evap/Purge Solenoid BK At Solenoid N/S
Flip-Up Glass Release Motor BK In Tailgate 46
Flip-Up Glass Release Switch WT In Tailgate 46
Front Washer Pump BK Right Front Side of Engine
Compartment28
Front Wiper Motor (LHD) BK Left Side of Cowl 24
8Wa - 91 - 4 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONKJ
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Output Speed Sensor BK Left Side of Transmission 5
Overhead Map/Courtesy Lamp BK Overhead Console N/S
Oxygen Sensor 1/1 Upstream (2.4L) BK Right Side of Engine 12
Oxygen Sensor 1/1 Upstream (3.7L) BK Lower Left Side of Engine 3
Oxygen Sensor 1/2 Downstream
(2.4L)NAT Right Side of Transmission 11, 12
Oxygen Sensor 1/2 Downstream
(3.7L)NAT Left Side of Transmission 5, 7
Oxygen Sensor 2/1 Upstream (3.7L) BK Lower Right Side of Engine 4
Oxygen Sensor 2/2 Downstream
(3.7L)NAT Right Side of Transmission 6
Park Brake Switch BK Center Console 36, 40
Passenger Airbag YL Right Side Instrument Panel N/S
Passenger Seat Belt Switch LG At Passenger Seat N/S
Power Mirror Switch WT In Left Front Door 41
Power Outlet RD Center of Instrument Panel N/S
Power Steering Pressure Switch BK Left Front Side of Engine 3, 15
Power Window Master Switch LG Center Console 36, 40
Powertrain Control Module C1 (2.4L) BK At Powertrain Control Module 13, 14
Powertrain Control Module C1 (3.7L) BK At Powertrain Control Module 8, 9, 10
Powertrain Control Module C2 WT At Powertrain Control Module 8, 9, 10, 13, 14
Powertrain Control Module C3 GY At Powertrain Control Module 31
Radiator Fan Motor BK Right Front Side of Engine
Compartment28
Radiator Fan Relay BK Left Front Side of Engine
Compartment29
Radio C1 GY Rear of Radio N/S
Radio C2 Rear of Radio N/S
Radio C3 Rear of Radio N/S
Radio Choke GY Center of Instrument Panel N/S
Rear Map/Reading Lamp BK Overhead Console N/S
Rear Power Outlet RD Right Rear Quarter Panel 44, 45, 48
Rear Power Window Switch WT Center Console 36, 40
Rear Wheel Speed Sensor BK On Rear Axle N/S
Rear Window Defogger BK At Rear Window 46
Rear Wiper Motor BK In Tailgate 46
Red Brake Warning Indicator Switch
(LHD)GY Left Rear Side of Engine
Compartment31
Red Brake Warning Indicator Switch
(RHD)GY Right Rear Side of Engine
Compartment26
Right Curtain Airbag YL Right Mid B-Pillar 34, 39
Right Cylinder Lock Switch (Except
Base)LG In Right Front Door 41
KJ8W-91 CONNECTOR/GROUND/SPLICE LOCATION8Wa-91-7
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

ENGINE BLOCK
DESCRIPTION.........................39
STANDARD PROCEDURE - CYLINDER BORE
HONING............................39
CLEANING............................39
INSPECTION..........................40
CONNECTING ROD BEARINGS
STANDARD PROCEDURE - CONNECTING
ROD BEARING - FITTING...............40
CRANKSHAFT
DESCRIPTION.........................42
REMOVAL.............................43
INSPECTION..........................43
INSTALLATION.........................43
CRANKSHAFT MAIN BEARINGS
STANDARD PROCEDURE
MAIN BEARING - FITTING...............45
CRANKSHAFT OIL SEAL - FRONT
REMOVAL.............................46
INSTALLATION.........................47
CRANKSHAFT OIL SEAL - REAR
REMOVAL.............................48
INSTALLATION.........................48
FLEX PLATE
REMOVAL.............................49
INSTALLATION.........................49
PISTON & CONNECTING ROD
DESCRIPTION.........................49
STANDARD PROCEDURE
CONNECTING ROD BEARING - FITTING . . . 49
STANDARD PROCEDURE - PISTON
FITTING.............................50
REMOVAL.............................50
CLEANING............................51
INSPECTION..........................51
INSTALLATION.........................51
PISTON RINGS
STANDARD PROCEDURE - PISTON RING
FITTING.............................52
VIBRATION DAMPER
REMOVAL.............................54
INSTALLATION.........................55
STRUCTURAL COVER
DESCRIPTION.........................55
OPERATION...........................55
REMOVAL.............................55
INSTALLATION.........................55
FRONT MOUNT
REMOVAL.............................56
INSTALLATION.........................57
REAR MOUNT
REMOVAL.............................57
INSTALLATION.........................57
LUBRICATION
DESCRIPTION.........................57
OPERATION...........................58DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE OIL
LEAK...............................60
DIAGNOSIS AND TESTING - ENGINE OIL
PRESSURE..........................60
DIAGNOSIS AND TESTING - REAR SEAL
AREA LEAKS.........................61
OIL
STANDARD PROCEDURE - ENGINE OIL.....61
OIL FILTER
REMOVAL.............................63
INSTALLATION.........................63
OIL PAN
DESCRIPTION.........................63
REMOVAL.............................63
CLEANING............................63
INSPECTION..........................63
INSTALLATION.........................64
OIL PRESSURE SENSOR/SWITCH
DESCRIPTION.........................65
OPERATION...........................65
REMOVAL.............................65
INSTALLATION.........................65
OIL PUMP
REMOVAL.............................65
DISASSEMBLY.........................65
INSPECTION..........................66
ASSEMBLY............................67
INSTALLATION.........................67
INTAKE MANIFOLD
DESCRIPTION.........................68
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKS.....................68
REMOVAL.............................68
INSTALLATION.........................69
EXHAUST MANIFOLD
DESCRIPTION.........................69
REMOVAL.............................69
INSTALLATION.........................70
VALVE TIMING
DESCRIPTION.........................71
OPERATION...........................71
STANDARD PROCEDURE
MEASURING TIMING CHAIN WEAR.......71
SERVICE PROCEDURES...............72
BALANCE SHAFT
REMOVAL.............................74
INSTALLATION.........................74
TIMING BELT / CHAIN COVER(S)
REMOVAL.............................74
INSTALLATION.........................76
IDLER SHAFT
REMOVAL.............................77
INSTALLATION.........................77
TIMING BELT/CHAIN AND SPROCKET(S
REMOVAL.............................77
INSPECTION..........................79
INSTALLATION.........................80
9 - 2 ENGINE - 3.7LKJ

²Tapping the hole with a special Heli-Coil Tap, or
equivalent.
²Installing an insert into the tapped hole to bring
the hole back to its original thread size.
STANDARD PROCEDURE - ENGINE CORE AND
OIL GALLERY PLUGS
Using a blunt tool such as a drift and a hammer,
strike the bottom edge of the cup plug. With the cup
plug rotated, grasp firmly with pliers or other suit-
able tool and remove plug (Fig. 2).
CAUTION: Do not drive cup plug into the casting as
restricted cooling can result and cause serious
engine problems.
Thoroughly clean inside of cup plug hole in cylin-
der block or head. Be sure to remove old sealer.
Lightly coat inside of cup plug hole with Mopart
Stud and Bearing Mount. Make certain the new plug
is cleaned of all oil or grease. Using proper drive
plug, drive plug into hole so that the sharp edge of
the plug is at least 0.5 mm (0.020 in.) inside the
lead-in chamfer.
It is not necessary to wait for curing of the sealant.
The cooling system can be refilled and the vehicle
placed in service immediately.
REMOVAL
(1) Disconnect the battery negative cable.
(2) Remove hood. Mark hood hinge location for
reinstallation.
(3) Remove air cleaner assembly.(4) Remove radiator core support bracket.
(5) Remove fan shroud with electric fan assembly.
(6) Remove mechanical cooling fan.
(7) Remove drive belt.
NOTE: It is NOT necessary to discharge the A/C
system to remove the engine.
(8) Remove A/C compressor and secure away from
engine with lines attached.
(9) Remove generator and secure away from
engine.
NOTE: Do NOT remove the phenolic pulley from the
P/S pump. It is not required for P/S pump removal.
(10) Remove power steering pump with lines
attached and secure away from engine.
(11) Drain cooling system.
(12) Remove coolant bottle.
(13) Disconnect the heater hoses from the engine.
(14) Disconnect heater hoses from heater core and
remove hose assembly.
(15) Disconnect throttle and speed control cables.
(16) Remove upper radiator hose from engine.
(17) Remove lower radiator hose from engine.
(18) Disconnect the engine to body ground straps
at the left side of cowl.
(19) Disconnect the engine wiring harness at the
following points:
²Intake air temperature (IAT) sensor
²Fuel Injectors
²Throttle Position (TPS) Switch
²Idle Air Control (IAC) Motor
²Engine Oil Pressure Switch
²Engine Coolant Temperature (ECT) Sensor
²Manifold Absolute Pressure MAP) Sensor
²Camshaft Position (CMP) Sensor
²Coil Over Plugs
²Crankshaft Position Sensor
(20) Remove coil over plugs.
(21) Release fuel rail pressure.
(22) Remove fuel rail and secure away from
engine.
NOTE: It is not necessary to release the quick con-
nect fitting from the fuel supply line for engine
removal.
(23) Remove the PCV hose.
(24) Remove the breather hoses.
(25) Remove the vacuum hose for the power brake
booster.
(26) Disconnect knock sensors.
(27) Remove engine oil dipstick tube.
(28) Remove intake manifold.
(29) Install engine lift plate.
Fig. 2 Core Hole Plug Removal
1 - CYLINDER BLOCK
2 - REMOVE PLUG WITH PLIERS
3 - STRIKE HERE WITH HAMMER
4 - DRIFT PUNCH
5 - CUP PLUG
9 - 10 ENGINE - 3.7LKJ
ENGINE - 3.7L (Continued)