2002 JEEP GRAND CHEROKEE Bus

8W-18 BUS COMMUNICATIONS
Component Page
Adjustable Pedals Module.............. 8W-18-2
Airbag Control Module.............. 8W-18-4, 7
Automatic Zone Control Module....... 8W-18-4, 7
Body Control Module......... 8W-18-4, 7, 8, 9, 10
Compact Disc Changer.............. 8W-18-3, 5
Controller Antilock Brake.......... 8W-18-2, 3, 5
Data Link Connector......... 8W-18-4, 7, 8, 9, 10
Diagnostic Junction Port...... 8W-18-4, 7, 8, 9, 10
Driver Door Module................ 8W-18-2, 5
Engine Control Module........... 8W-18-3, 5, 10
Fuse 17....................... 8W-18-8, 9, 10
G103......................... 8W-18-8, 9, 10
Instrument Cluster.......... 8W-18-4, 7, 8, 9, 10Component Page
Intrusion Transceiver Module......... 8W-18-2, 6
Junction Block.................. 8W-18-8, 9, 10
Passenger Door Module.............. 8W-18-3, 6
Power Amplifier................... 8W-18-3, 5
Powertrain Control Module....... 8W-18-3, 5, 8, 9
Radio............................ 8W-18-4, 7
Rain Sensor...................... 8W-18-2, 6
Seat Module...................... 8W-18-2, 5
Sentry Key Immobilizer Module....... 8W-18-4, 7
Shifter Assembly................... 8W-18-4, 7
Transmission Control Module . . 8W-18-3, 6, 8, 9, 10
Vehicle Information Center........... 8W-18-2, 6
WJ8W-18 BUS COMMUNICATIONS 8W - 18 - 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

AIRBAG CONTROL MODULE C2 (ORC C2) - YELLOW 32 WAY
CAV CIRCUIT FUNCTION
1 R45 20DG/LB DRIVER SQUIB 1 LINE 2
2 R43 20BK/LB DRIVER SQUIB 1 LINE 1
3 R42 20BK/YL PASSENGER SQUIB 1 LINE 1
4 R44 20DG/YL PASSENGER SQUIB 1 LINE 2
5- -
6- -
7- -
8- -
9 R49 20LB LEFT FRONT IMPACT SENSOR SIGNAL
10 R47 20DB/LB LEFT FRONT IMPACT SENSOR GROUND
11 R46 20BR/LB RIGHT FRONT IMPACT SENSOR GROUND
12 R48 20TN RIGHT FRONT IMPACT SENSOR SIGNAL
13 - -
14 - -
15 - -
16 F23 18DB/YL FUSED IGNITION SWITCH OUTPUT (RUN)
17 Z6 20BK/PK GROUND
18 - -
19 - -
20 - -
21 - -
22 - -
23 D25 20YL/VT/OR PCI BUS
24 F14 20LG/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
25 R63 20TN/LB DRIVER SQUIB 2 LINE 2
26 R61 20OR/LB DRIVER SQUIB 2 LINE 1
27 R62 20OR/YL PASSENGER SQUIB 2 LINE 2
28 R64 20TN/YL PASSENGER SQUIB 2 LINE 1
29 - -
30 - -
31 - -
32 - -
AMBIENT TEMPERATURE SENSOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G32 20BK/LB SENSOR GROUND
2 G31 20VT/LG AMBIENT TEMPERATURE SENSOR SIGNAL
ANTENNA MODULE (BUILT-UP-EXPORT) - WHITE 2 WAY
CAV CIRCUIT FUNCTION
1 X64 18BK/WT ENABLE SIGNAL TO AMPLIFIER
2- -
8W - 80 - 8 8W-80 CONNECTOR PIN-OUTWJ

AUTOMATIC ZONE CONTROL MODULE C2 (AZC) - WHITE 12 WAY
CAV CIRCUIT FUNCTION
1- -
2 C94 20WT/DG PASSENGER BLEND DOOR DRIVER (A)
3 C95 20WT/BK DRIVER BLEND DOOR DRIVER (B)
4 C96 20WT/DB PASSENGER BLEND DOOR DRIVER (B)
5- -
6 E2 20OR PANEL LAMPS DRIVER
7 C56 20RD/LG BLOWER MOTOR CONTROL
8 D25 20YL/VT/DG PCI BUS
9 C103 20DG A/C SWITCH SIGNAL
10 - -
11 F22 20WT/PK FUSED IGNITION SWITCH OUTPUT (RUN)
12 M1 20PK FUSED B(+)
BATTERY TEMPERATURE SENSOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB (GAS LHD) SENSOR GROUND
1 K4 20BK/LB (DIESEL/RHD) SENSOR GROUND
2 K25 18VT/LG BATTERY TEMPERATURE SENSOR SIGNAL
BLOWER MOTOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 C1 12DG BLOWER MOTOR SUPPLY
2 C7 12BK/TN BLOWER MOTOR HIGH DRIVER
BLOWER MOTOR CONTROLLER (AZC) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
A Z118 12BK GROUND
B C56 20RD/LG BLOWER MOTOR CONTROL
C C1 12DG BLOWER MOTOR SUPPLY
BLOWER MOTOR RESISTOR BLOCK (MTC) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
H C7 12BK/TN BLOWER MOTOR HIGH DRIVER
L C4 16TN BLOWER MOTOR LOW DRIVER
M1 C5 16LG BLOWER MOTOR M1 DRIVER
M2 C6 14LB BLOWER MOTOR M2 DRIVER
8W - 80 - 10 8W-80 CONNECTOR PIN-OUTWJ

BODY CONTROL MODULE C1 - GRAY 26 WAY
CAV CIRCUIT FUNCTION
1 Z132 20BK/OR GROUND
2 G52 20YL HEADLAMP SWITCH MUX
3 E19 20RD PANEL LAMPS DIMMER SIGNAL
4- -
5 G70 20BR/TN (BUILT-UP-EXPORT LHD
RHD)HOOD AJAR SWITCH SENSE
6 G26 20LB KEY-IN IGNITION SWITCH SENSE
7 G76 18TN/YL RIGHT REAR DOOR AJAR SWITCH SENSE
8 E2 20OR PANEL LAMPS DRIVER
9 E2 20OR PANEL LAMPS DRIVER
10 E2 20OR PANEL LAMPS DRIVER
11 - -
12 E2 20OR PANEL LAMPS DRIVER
13 E2 20OR PANEL LAMPS DRIVER
14 Z132 20BK/OR GROUND
15 D25 20YL/VT/WT PCI BUS
16 L80 20WT/DG HEADLAMP SWITCH RETURN
17 D19 20VT/OR BODY CONTROL MODULE FLASH ENABLE
18 - -
19 - -
20 G69 20BK/OR VTSS INDICATOR DRIVER
21 - -
22 V14 20RD/VT WIPER ON/OFF RELAY CONTROL
23 M20 20BR/OR COURTESY LAMP LOAD SHED
24 M2 20YL COURTESY LAMP DRIVER
25 Z234 20BK GROUND
26 - -
BODY CONTROL MODULE C2 - GRAY 22 WAY
CAV CIRCUIT FUNCTION
1 C103 20DG A/C SWITCH SIGNAL
2 V10 20BR WASHER PUMP SWITCH SENSE
3 V48 20RD/GY WIPER HIGH CONTROL
4 L40 20BR HIGH BEAM SWITCH SENSE
5 V11 20BK/TN WASHER FLUID SWITCH SENSE
6 P134 20TN/LG PASSENGER SEAT HEATER SWITCH MUX
7 P133 20TN/DG DRIVER SEAT HEATER SWITCH MUX
8 X20 20RD/YL RADIO CONTROL MUX
9 G31 20VT/LG AMBIENT TEMPERATURE SENSOR SIGNAL
10 L109 20WT ULTRALIGHT SENSOR SIGNAL
11 V52 20DG/RD WINDSHIELD WIPER SWITCH MUX
12 C81 20LB/WT REAR WINDOW DEFOGGER SWITCH SENSE
13 - -
14 - -
15 L27 20WT/TN FOG LAMP SWITCH SENSE
16 C201 20LB/YL EVAPORATOR TEMPERATURE SENSOR SIGNAL
17 G18 20PK/BK COOLANT LEVEL SWITCH SENSE
18 P132 20OR/BK SEAT HEATER SWITCH SENSOR GROUND
19 X10 20RD/BK RADIO CONTROL MUX RETURN
20 G32 20BK/LB SENSOR GROUND
21 L110 20BK/YL ULTRALIGHT SENSOR RETURN
22 V9 20WT/BK WINDSHIELD WIPER SWITCH RETURN
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 11

COIL ON PLUG NO. 7 (4.7L) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K97 14BR COIL DRIVER NO. 7
2 A142 14DG/OR AUTO SHUT DOWN RELAY OUTPUT
3- -
COIL ON PLUG NO. 8 (4.7L) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K98 14LB/RD COIL DRIVER NO. 8
2 A142 14DG/OR AUTO SHUT DOWN RELAY OUTPUT
3- -
COIL RAIL (4.0L) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 K91 14TN/RD COIL DRIVER NO. 1
2 A142 14DG/OR AUTO SHUT DOWN RELAY OUTPUT
3 K92 14TN/PK COIL DRIVER NO. 2
4 K93 14TN/OR COIL DRIVER NO. 3
COMPACT DISC CHANGER (PREMIUM RADIO) - BLACK 8 WAY
CAV CIRCUIT FUNCTION
1 X40 20WT/RD AUDIO OUT RIGHT
2 C235 20WT/LB SHIELD
3 D25 20YL/VT PCI BUS
4 X112 20RD IGNITION SWITCH OUTPUT (RUN-ACC)
5 X41 20WT/DG AUDIO OUT LEFT
6 Z4 20WT/BK GROUND
7 Z17 20BK GROUND
8 X160 20YL B(+)
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 63

CONTROLLER ANTILOCK BRAKE - BLACK 24 WAY
CAV CIRCUIT FUNCTION
1 Z101 12BK/OR GROUND
2 B1 18YL/DB RIGHT REAR WHEEL SPEED SENSOR SIGNAL
3 B2 18YL RIGHT REAR WHEEL SPEED SENSOR 12 VOLT
SUPPLY
4- -
5 D25 18VT/YL PCI BUS
6 B6 18WT/DB RIGHT FRONT WHEEL SPEED SENSOR SIGNAL
7 B7 18WT RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT
SUPPLY
8- -
9 A20 12RD/DB FUSED B(+)
10 F20 18DB/PK FUSED IGNITION SWITCH OUTPUT (RUN)
11 D52 18LG/WT (DIESEL) CAN C BUS(+)
12 - -
13 B22 18DG/YL VEHICLE SPEED SENSOR SIGNAL
14 D51 18DG/WT (DIESEL) CAN C BUS(-)
15 - -
16 Z102 12BK/OR GROUND
17 G9 18GY/BK BRAKE FLUID LEVEL SWITCH SENSE
18 L50 18WT/TN PRIMARY BRAKE SWITCH SIGNAL
19 B3 18LG/DB LEFT REAR WHEEL SPEED SENSOR SIGNAL
20 B4 18LG LEFT REAR WHEEL SPEED SENSOR 12 VOLT SUPPLY
21 Z231 18BK GROUND
22 B8 18RD/DB LEFT FRONT WHEEL SPEED SENSOR SIGNAL
23 B9 18RD LEFT FRONT WHEEL SPEED SENSOR 12 VOLT
SUPPLY
24 A10 12RD/DG FUSED B(+)
COOLANT LEVEL SENSOR - LT. GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 G18 20PK/BK (EXCEPT LHD GAS) COOLANT LEVEL SWITCH SENSE
1 G18 18PK/BK (LHD GAS) COOLANT LEVEL SWITCH SENSE
2 Z307 20BK GROUND
CRANKCASE HEATER (DIESEL) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z18 20BR GROUND
2 F15 20RD/DG FUSED AUTO SHUT DOWN RELAY OUTPUT
8W - 80 - 64 8W-80 CONNECTOR PIN-OUTWJ

CRANKSHAFT POSITION SENSOR (DIESEL) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K924 20YL CRANKSHAFT POSITION SENSOR SIGNAL 2
2 K3 20BK CRANKSHAFT POSITION SENSOR SIGNAL 1
CRANKSHAFT POSITION SENSOR (GAS) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
2 K4 18BK/LB SENSOR GROUND
3 K7 18OR 5 VOLT SUPPLY
DATA LINK CONNECTOR - BLACK 16 WAY
CAV CIRCUIT FUNCTION
1- -
2 D25 20YL/VT PCI BUS
3- -
4 Z305 20BK/OR GROUND
5 Z306 20BK/LG GROUND
6 D32 20LG/DG SCI RECEIVE
7 D21 20PK SCI TRANSMIT
8- -
9 D19 20VT/OR BODY CONTROL MODULE FLASH ENABLE
10 - -
11 - -
12 - -
13 - -
14 D20 20LG SCI RECEIVE
15 - -
16 F33 20PK/RD FUSED B(+)
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 65