2002 JEEP GRAND CHEROKEE compressor clutch

8W-42 AIR CONDITIONING-HEATER
Component Page
A/C Compressor Clutch.............. 8W-42-3, 4
A/C Compressor Clutch Relay......... 8W-42-3, 4
A/C Pressure Transducer........ 8W-42-11, 12, 13
Auto Shut Down Relay.......... 8W-42-4, 11, 12
Automatic Zone Control Module . 8W-42-2, 5, 6, 7, 8
Blower Motor................... 8W-42-2, 6, 9
Blower Motor Controller............. 8W-42-2, 6
Blower Motor Resistor Block............ 8W-42-9
Body Control Module........... 8W-42-5, 6, 9, 10
Diagnostic Junction Port............... 8W-42-5
Driver Blend Door Motor/Actuator..... 8W-42-7, 8
Engine Control Module............. 8W-42-4, 13
Fuse 1......................... 8W-42-2, 6, 9
Fuse 7............................. 8W-42-6
Fuse 11......................... 8W-42-5, 10
Fuse 16...................... 8W-42-4, 11, 12
Fuse 20......................... 8W-42-2, 10
Fuse 21.......................... 8W-42-3, 4Component Page
G104.............................. 8W-42-3
G108.......................... 8W-42-11, 12
G200......................... 8W-42-2, 6, 10
Glow Plug Relay No. 1................ 8W-42-4
Hydraulic Cooling Module.......... 8W-42-11, 12
Junction Block.............. 8W-42-2, 3, 5, 6, 10
Manual Temperature Control...... 8W-42-2, 9, 10
Mode Door Motor/Actuator........... 8W-42-7, 8
Oxygen Sensor Downstream Relay . . . 8W-42-11, 12
Passenger Blend Door Motor/Actuator . . 8W-42-7, 8
Power Distribution
Center............. 8W-42-2, 3, 4, 6, 9, 11, 12
Powertrain Control Module....... 8W-42-3, 11, 12
Rear Window Defogger............. 8W-42-5, 10
Rear Window Defogger Relay........ 8W-42-5, 10
Recirculation Door Motor/Actuator..... 8W-42-7, 8
Temperature Valve Actuator........... 8W-42-10
Viscous/Cabin Heater Relay............ 8W-42-4
WJ8W-42 AIR CONDITIONING-HEATER 8W - 42 - 1

8W-80 CONNECTOR PIN-OUT
Component Page
A/C COMPRESSOR CLUTCH.......... 8W-80-6
A/C PRESSURE TRANSDUCER........ 8W-80-6
ACCELERATOR PEDAL POSITION
SENSOR (DIESEL)................. 8W-80-6
ADJUSTABLE PEDALS MODULE
(EXCEPT BUILT-UP-EXPORT)....... 8W-80-6
ADJUSTABLE PEDALS MOTOR/SENSOR
ASSEMBLY (EXCEPT
BUILT-UP-EXPORT)............... 8W-80-7
ADJUSTABLE PEDALS SWITCH (EXCEPT
BUILT-UP-EXPORT)............... 8W-80-7
AIRBAG CONTROL MODULE C1
(ORC C1)........................ 8W-80-7
AIRBAG CONTROL MODULE C2
(ORC C2)........................ 8W-80-8
AMBIENT TEMPERATURE SENSOR.... 8W-80-8
ANTENNA MODULE
(BUILT-UP-EXPORT)............... 8W-80-8
ASH RECEIVER LAMP............... 8W-80-9
AUTOMATIC DAY/NIGHT MIRROR..... 8W-80-9
AUTOMATIC HEADLAMP LIGHT
SENSOR/VTSS LED................ 8W-80-9
AUTOMATIC ZONE CONTROL
MODULE C1 (AZC)................ 8W-80-9
AUTOMATIC ZONE CONTROL
MODULE C2 (AZC)............... 8W-80-10
BATTERY TEMPERATURE SENSOR . . . 8W-80-10
BLOWER MOTOR.................. 8W-80-10
BLOWER MOTOR CONTROLLER
(AZC).......................... 8W-80-10
BLOWER MOTOR RESISTOR
BLOCK (MTC)................... 8W-80-10
BODY CONTROL MODULE C1........ 8W-80-11
BODY CONTROL MODULE C2........ 8W-80-11
BOOST PRESSURE SENSOR
(DIESEL)....................... 8W-80-12
BRAKE LAMP SWITCH.............. 8W-80-12
C100............................. 8W-80-12
C100............................. 8W-80-12
C101 (4.0L RHD)................... 8W-80-12
C101 (4.0L RHD)................... 8W-80-13
C101 (4.7L RHD)................... 8W-80-13
C101 (4.7L RHD)................... 8W-80-13
C102 (DIESEL)..................... 8W-80-14
C102 (DIESEL)..................... 8W-80-14
C102 (GAS RHD)................... 8W-80-14
C102 (GAS RHD)................... 8W-80-15
C103 (DIESEL)..................... 8W-80-15
C103 (DIESEL)..................... 8W-80-15
C103 (GAS)........................ 8W-80-16
C103 (GAS)........................ 8W-80-16
C104............................. 8W-80-17
C104............................. 8W-80-17Component Page
C105 (DIESEL)..................... 8W-80-17
C105 (DIESEL)..................... 8W-80-18
C106 (DIESEL)..................... 8W-80-18
C106 (DIESEL)..................... 8W-80-20
C106 (GAS)........................ 8W-80-22
C106 (GAS)........................ 8W-80-24
C107 (DIESEL)..................... 8W-80-26
C107 (DIESEL)..................... 8W-80-28
C107 (GAS)........................ 8W-80-30
C107 (GAS)........................ 8W-80-32
C108............................. 8W-80-33
C108............................. 8W-80-33
C109............................. 8W-80-33
C109............................. 8W-80-34
C110 (DIESEL)..................... 8W-80-34
C110 (DIESEL)..................... 8W-80-34
C111 ............................. 8W-80-34
C111 ............................. 8W-80-34
C112 ............................. 8W-80-35
C112 ............................. 8W-80-35
C113 (DIESEL)..................... 8W-80-35
C113 (DIESEL)..................... 8W-80-35
C200............................. 8W-80-36
C200............................. 8W-80-38
C201 (DIESEL)..................... 8W-80-39
C201 (DIESEL)..................... 8W-80-39
C202 (AZC)........................ 8W-80-40
C202 (AZC)........................ 8W-80-40
C202 (MTC)....................... 8W-80-41
C202 (MTC)....................... 8W-80-41
C203 (AZC)........................ 8W-80-41
C203 (AZC)........................ 8W-80-41
C300 (LHD)........................ 8W-80-42
C300 (LHD)........................ 8W-80-44
C301 (RHD)....................... 8W-80-46
C301 (RHD)....................... 8W-80-48
C302............................. 8W-80-49
C302............................. 8W-80-50
C303............................. 8W-80-50
C303............................. 8W-80-51
C304............................. 8W-80-51
C304............................. 8W-80-51
C306............................. 8W-80-52
C306............................. 8W-80-52
C307............................. 8W-80-52
C307............................. 8W-80-52
C308............................. 8W-80-53
C308............................. 8W-80-53
C309............................. 8W-80-53
C309............................. 8W-80-54
C310 (BUILT-UP-EXPORT)........... 8W-80-54
C310 (BUILT-UP-EXPORT)........... 8W-80-54
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 1

A/C COMPRESSOR CLUTCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 C2 18DB/YL A/C COMPRESSOR CLUTCH RELAY OUTPUT
2 Z18 18BK GROUND
A/C PRESSURE TRANSDUCER - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K6 18VT/WT (DIESEL) SENSOR REFERENCE VOLTAGE B
2 K6 18VT/BK (GAS) 5 VOLT SUPPLY
3 C18 18DB A/C PRESSURE SIGNAL
4- -
ACCELERATOR PEDAL POSITION SENSOR (DIESEL) - BLACK 10 WAY
CAV CIRCUIT FUNCTION
1- -
2 F855 18BR/YL SENSOR REFERENCE VOLTAGE A
3 K22 14RD/DB ACCELERATOR PEDAL POSITION SENSOR 2 SIGNAL
4- -
5- -
6 K225 18BK ACCELERATOR PEDAL POSITION SENSOR 2 GROUND
7 K81 20DB/DG ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL
8 K255 20WT/DG ACCELERATOR PEDAL POSITION SENSOR 1 GROUND
9- -
10 Y43 20WT/VT ACCELERATOR PEDAL POSITION SENSOR 1 5-VOLT
SUPPLY
ADJUSTABLE PEDALS MODULE (EXCEPT BUILT-UP-EXPORT) - GREEN 14 WAY
CAV CIRCUIT FUNCTION
1 Y151 20LG/BR ADJUSTABLE PEDALS SWITCH SENSE (FORWARD)
2 Y152 20LG/OR ADJUSTABLE PEDALS SWITCH SENSE (REARWARD)
3 Q110 16OR/VT ADJUSTABLE PEDALS MOTOR (FORWARD)
4 F72 16RD/YL FUSED B(+)
5- -
6 Q111 16OR/GY ADJUSTABLE PEDALS MOTOR (REARWARD)
7 Q113 20OR/DB (MEMORY) PEDAL POSITION SENSOR FEED
8 Q112 20OR/YL (MEMORY) PEDAL POSITION SENSOR SENSE
9 Q114 20OR/TN (MEMORY) PEDAL POSITION SENSOR RETURN
10 Z151 16BK GROUND
11 Z155 20BK/OR GROUND
12 L1 18WT/BR BACK-UP LAMP FEED
13 D25 20VT/YL PCI BUS
14 Y153 16DB/RD ADJUSTABLE PEDALS SWITCH FEED
8W - 80 - 6 8W-80 CONNECTOR PIN-OUTWJ

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY
CAV CIRCUIT FUNCTION
55 B22 20DG/YL VEHICLE SPEED SENSOR SIGNAL
56 K225 18BK ACCELERATOR PEDAL POSITION SENSOR 2 GROUND
57 - -
58 K4 20BK/LB WATER IN FUEL SENSOR GROUND
59 K900 18GY INTAKE PORT SWIRL ACTUATOR SIGNAL
60 K7 20RD/WT FUEL PRESSURE SENSOR 5 VOLT SUPPLY
61 K51 20DB/YL AUTO SHUT DOWN RELAY CONTROL
62 - -
63 - -
64 - -
65 - -
66 - -
67 K173 20GY HYDRAULIC RADIATOR FAN SOLENOID CONTROL
68 - -
69 C13 20DB/RD A/C COMPRESSOR CLUTCH RELAY CONTROL
70 - -
71 - -
72 K236 20GY/PK GLOW PLUG RELAY NO. 2 CONTROL
73 - -
74 T752 20DG/RD ENGINE STARTER MOTOR RELAY CONTROL
75 K132 20BR/BK VISCOUS/CABIN HEATER RELAY CONTROL
76 Y42 20BR/BK WASTEGATE SOLENOID CONTROL
77 K152 20WT GLOW PLUG RELAY NO. 1 CONTROL
78 - -
79 - -
80 K46 20DB/BK FUEL PRESSURE SOLENOID CONTROL
81 K46 20DB/BK FUEL PRESSURE SOLENOID CONTROL
ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAY
CAV CIRCUIT FUNCTION
82 D21 20PK SCI TRANSMIT
83 - -
84 - -
85 - -
86 - -
87 - -
88 - -
89 K35 20GY/YL EGR SOLENOID CONTROL
90 - -
91 - -
92 - -
93 - -
94 G123 20DG/WT WATER IN FUEL SENSOR SIGNAL
95 - -
96 - -
97 - -
98 - -
99 - -
100 - -
101 - -
102 - -
103 - -
104 - -
8W - 80 - 76 8W-80 CONNECTOR PIN-OUTWJ

POWERTRAIN CONTROL MODULE C3 (GAS) - GRAY 32 WAY
CAV CIRCUIT FUNCTION
1 C13 18DB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
2- -
3 K51 18DB/YL AUTO SHUT DOWN RELAY CONTROL
4 V36 18TN/RD SPEED CONTROL VACUUM SOLENOID CONTROL
5 V35 18LG/RD SPEED CONTROL VENT SOLENOID CONTROL
6- -
7 K42 18DB/LG (4.7L HIGH OUTPUT) KNOCK SENSOR NO. 1 SIGNAL
8 K99 18BR/OR OXYGEN SENSOR 1/1 HEATER CONTROL
9 K512 18RD/YL (EXCEPT 4.0L
BUILT-UP-EXPORT)OXYGEN SENSOR DOWNSTREAM RELAY CONTROL
10 K106 18WT/DG (EXCEPT
BUILT-UP-EXPORT)LEAK DETECTION PUMP SOLENOID CONTROL
11 V32 18OR/DG SPEED CONTROL SUPPLY
12 F42 18DG/LG FUSED AUTO SHUT DOWN RELAY OUTPUT
13 T10 18YL/DG (4.7L RHD) TORQUE MANAGEMENT REQUEST SENSE
13 T6 18OR/WT (4.0L LHD) OVERDRIVE OFF SWITCH SENSE
13 T10 18DG/LG (4.7L LHD) TORQUE MANAGEMENT REQUEST SENSE
13 T6 18OR/BK (4.0L RHD) OVERDRIVE OFF SWITCH SENSE
14 K107 18OR/PK (EXCEPT
BUILT-UP-EXPORT)LEAK DETECTION PUMP SWITCH SENSE
15 K25 18VT/LG BATTERY TEMPERATURE SENSOR SIGNAL
16 K299 18BR/WT OXYGEN SENSOR 1/2 HEATER CONTROL
17 - -
18 K142 18GY/BK (4.7L HIGH OUTPUT) KNOCK SENSOR NO. 2 SIGNAL
19 K31 18BR FUEL PUMP RELAY CONTROL
20 K52 18PK/BK DUTY CYCLE EVAP/PURGE SOLENOID CONTROL
21 - -
22 - -
23 - -
24 K29 18WT/PK SECONDARY BRAKE SWITCH SIGNAL
25 K125 18WT/DB GENERATOR SOURCE
26 K226 18LB/YL FUEL LEVEL SENSOR SIGNAL
27 D21 18PK SCI TRANSMIT
28 - -
29 D32 18LG (LHD) SCI RECEIVE
29 D32 18LG/DG (RHD) SCI RECEIVE
30 D25 18VT/YL PCI BUS
31 - -
32 V37 18RD/LG SPEED CONTROL SWITCH SIGNAL
RADIATOR FAN MOTOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 C23 12DG RADIATOR FAN RELAY OUTPUT
2 Z4 12BK/PK GROUND
8W - 80 - 110 8W-80 CONNECTOR PIN-OUTWJ

8W-91 CONNECTOR/GROUND/SPLICE LOCATION
TABLE OF CONTENTS
page
CONNECTOR/GROUND/SPLICE LOCATION
DESCRIPTION..........................1
CONNECTOR/GROUND/SPLICE
LOCATION
DESCRIPTION
This section provides illustrations identifying con-
nector, ground, and splice locations in the vehicle.Connector, ground, and splice indexes are provided.
Use the wiring diagrams in each section for connec-
tor, ground, and splice identification. Refer to the
appropriate index for the proper figure number. For
items that are not shown in this section N/S is placed
in the Fig. column.
CONNECTORS
CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
A/C Compressor Clutch BK At A/C Compressor 9, 13
A/C Pressure Transducer BK Right Front of Engine Compartment 3, 4, 5
Accelerator Pedal Position
Sensor (Diesel)BK Rear of Engine Compartment Near
Fuel/Water Seperator7
Adjustable Pedals Module
(Except Built-up Export)GN Above Drivers Control Pedals N/S
Adjustable Pedals Motor/
Sensor Assembly (Except
Built-up Export)Above Drivers Control Pedals N/S
Adjustable Pedals Switch WT Drivers Lower Kick Panel 21
Airbag Control Module (ORC)
C1YL Below Center Floor Console, Near
Park Brake19, 20, 21, 22
Airbag Control Module (ORC)
C2YL Below Center Floor Console, Near
Park Brake19, 20, 21, 22
Ambient Temperature Sensor BK On Radiator Center Support 5
Antenna Module (Built-up-
export)WT Above Right Quarter Window N/S
Ash Receiver Lamp BK Below Cigarette Lighter 19, 20
Automatic Day/Night Mirror BK In Front of Rear View Mirror N/S
Automatic Headlamp Light
Sensor/VTSS LEDBK Near Left Instrument Panel Speaker 19, 20
Automatic Zone Control
Module - C1 (AZC)WT Left Side of HVAC Housing N/S
Automatic Zone Control
Module - C2 (AZC)WT Left Side of HVAC Housing N/S
Battery Temperature Sensor BK Below Battery Tray 4, 5
Blower Motor BK Behind Right Hand Side of
Instrument PanelN/S
WJ8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 1

SPLICES
SPLICE
NUMBERLOCATION FIG.
S100 Near T/O for Power Distribution Center Eyelet 2
S102 (4.0L) Near T/O for G103 10, 11
102 (4.7L) Near T/O for Fuel Injector No. 1 13
S102 (Diesel) Near T/O for C110 7, 8
S103 (4.7L) Near T/O for Engine Oil Pressure Sensor 13
S104 (4.0L) Near T/O for A/C Compressor Clutch N/S
S104 (4.7L) Near T/O for Oxygen Sensor 2/2 Downstream N/S
S105 (4.0L) Near T/O for Capacitor 10 11
S105 (4.7L) Near T/O for Fuel Injector NO. 7 13
S106 (4.0L) In T/O for Oxygen Sensors 11, 12
S106 (4.7L) Near T/O for C103 14
S106 (4.7L) RHD Near T/O for Fuel Injector No.4 15
S107 (4.0L) Near T/O for Fuel Injector No.5 9
S107 (4.7L) Near T/O for Fuel Injector No.7 13
S109 (4.0L) Near T/O for Fuel Injector No.2 9
S109 (4.7L) Near T/O for Coil On Plug No. 6 14, 15
S110 (4.0L
Except
Built-Up-Export)Near T/O for Oxygen Sensor N/S
S111 (4.7L) In T/O for Oxygen Sensor N/S
S111 (4.0L
Except
Built-Up-Export)Near T/O for Oxygen Sensor N/S
S112 (4.0L) Near T/O for C102, C103 and C104 10, 11
S112 (4.7L) Near T/O for Coil On Plug No.8 15
S112 (Diesel) Near T/O for Accelerator Pedal Position Sensor N/S
S113 (4.7L) Near T/O for Transmission Control Module 15, 18
S114 (4.0L) Near T/O for Transmission Control Module 18
S114 (4.7L) Near T/O for Transmission Control Module 15, 18
S115 (4.0L) Near T/O for Transmission Control Module 18
S115 (4.7L) Near T/O for Transmission Control Module 15, 18
S116 (4.0L) Near Powertrain Control Module C1 and C2 18
S116 (4.7L) LHD Near T/O for C102, C103 and C104 14
S116 (4.7L) RHD In T/O for Powertrain Control Module 15
S117 (4.7L) LHD Neat T/O for C102, C103 and C104 14
S118 (4.7L) Near T/O for Coil On PlugNo.4 14, 15
S118 (Diesel) Near T/O for Fuel Sender Unit N/S
S119 (4.7L) LHD In T/O for Crankshaft Position Sensor 18
S119 (4.7L) RHD In T/O for Powertrain Control Module 15
S120 (4.7L) Near T/O for Powertrain Control Module 15, 18
S121 (4.7L) Near T/O for Idle Air Control Motor 13
8W - 91 - 12 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONWJ
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

DESCRIPTION SPECIFICATION
Ring Side Clearance
Compression Rings 0.042 to 0.084 mm
(0.0017 to 0.0033 in.)
Oil Control Rings 0.06 to 0.21 mm
(0.0024 to 0.0083 in.)
Piston Ring Groove
Height
Compression Rings 1.530 to 1.555 mm
(0.0602 to 0.0612 in.)
Oil Control Ring 4.035 to 4.060 mm
(0.1589 to 0.1598 in.)
Piston Ring Groove
Diameter
No.1 Compression Ring 88.39 to 88.65 mm
(3.48 to 3.49 in.)
No.2 Compression Ring 87.63 to 87.88 mm
(3.45 to 3.46 in.)
Oil Control Ring 89.66 to 89.92 mm
(3.53 to 3.54 in.)
Piston Pin Bore Diameter 23.650 to 23.658 mm
(0.9312 to 0.9315 in.)
Piston Pin Diameter 23.637 to 23.640 mm
(0.9306 to 0.9307 in.)
Piston-to-Pin Clearance 0.0102 to 0.0208 mm
(0.0005 to 0.0009 in.)
Piston-to-Pin Connecting
Rod (Press Fit) 8.9 kN (2000 lbf.)
OIL PUMP
Gear-to-Body Clearance 0.051 to 0.102 mm
(Radial) (0.002 to 0.004 in.)
Gear-to-Body Clearance
(Radial) Preferred 0.051 mm (0.002 in.)
Gear End Clearance 0.051 to 0.152 mm
Plastigage (0.002 to 0.006 in.)
Gear End Clearance
Plastigage (Preferred) 0.051 mm (0.002 in.)
Gear End Clearance 0.1016 to 0.2032 mm
Feeler Gauge (0.004 to 0.008 in.)DESCRIPTION SPECIFICATION
Gear End Clearance
Feeler Gauge (Preferred) 0.1778 mm (0.007 in.)
Oil Pressure
At Idle Speed 89.6 kPa (13 psi)
At 1600 rpm & Higher 255 to 517 kPa
(37 to 75 psi)
Oil Pressure Relief 517 kPa (75 psi)
TORQUE - 4.0L ENGINE
DESCRIPTION N´m Ft. In.
Lbs. Lbs.
A/C CompressorÐBolts 28 Ð 250
Block HeaterÐNut 2 Ð 16
Camshaft SprocketÐBolt 68 50 Ð
Camshaft Thrust Plate to
Cylinder BlockÐScrews 24 18 Ð
Clutch Cover to FlywheelÐBolts 54 40 Ð
Coil Bracket to BlockÐBolts 22 Ð 192
Connecting RodÐNuts 45 33 Ð
Cylinder BlockÐDrain Plugs 34 25 Ð
Cylinder HeadÐBolts 135 100 Ð
Cylinder Head CoverÐBolts 10 Ð 85
Distributor ClampÐBolts 23 Ð 204
Engine MountsÐFront
Support Bracket Bolts 61 45 Ð
Support Cushion Bolts/Nuts 41 30 Ð
Support Cushion Bracket Bolts 54 40 Ð
Support Cushion Bracket Stud
Nuts41 30 Ð
Support Cushion Thru-Bolt 65 48 Ð
Engine MountsÐRear
Crossmember to Sill BoltsÐ
(Automatic) 41 30 Ð
Insulator Stud AssemblyÐNut 41 30 Ð
Support Cushion/
CrossmemberÐ
Nuts 22 Ð 192
Support Cushion/BracketÐNuts
(Manual) 75 55 Ð
WJENGINE - 4.0L 9 - 17
ENGINE - 4.0L (Continued)