dash JEEP GRAND CHEROKEE 2002 WJ / 2.G Owner's Guide

8W-01 WIRING DIAGRAM INFORMATION
TABLE OF CONTENTS
page page
WIRING DIAGRAM INFORMATION
DESCRIPTION
DESCRIPTION - HOW TO USE WIRING
DIAGRAMS...........................1
DESCRIPTION - CIRCUIT INFORMATION....5
DESCRIPTION - CIRCUIT FUNCTIONS......6
DESCRIPTION - SECTION IDENTIFICATION
AND INFORMATION....................6
DESCRIPTION - CONNECTOR, GROUND
AND SPLICE INFORMATION..............7
WARNING
WARNINGS - GENERAL.................7
DIAGNOSIS AND TESTING - WIRING
HARNESS............................7
STANDARD PROCEDURE
STANDARD PROCEDURE -
ELECTROSTATIC DISCHARGE (ESD)
SENSITIVE DEVICES...................8
STANDARD PROCEDURE - TESTING OF
VOLTAGE POTENTIAL...................9
STANDARD PROCEDURE - TESTING FOR
CONTINUITY..........................9STANDARD PROCEDURE - TESTING FOR A
SHORT TO GROUND...................9
STANDARD PROCEDURE - TESTING FOR A
SHORT TO GROUND ON FUSES
POWERING SEVERAL LOADS...........10
STANDARD PROCEDURE - TESTING FOR A
VOLTAGE DROP......................10
SPECIAL TOOLS
WIRING/TERMINAL....................10
CONNECTOR
REMOVAL.............................11
INSTALLATION.........................11
DIODE
REMOVAL.............................14
INSTALLATION.........................14
TERMINAL
REMOVAL.............................14
INSTALLATION.........................14
WIRE
STANDARD PROCEDURE - WIRE SPLICING . . 15
WIRING DIAGRAM
INFORMATION
DESCRIPTION
DESCRIPTION - HOW TO USE WIRING
DIAGRAMS
DaimlerChrysler Corporation wiring diagrams are
designed to provide information regarding the vehi-
cles wiring content. In order to effectively use the
wiring diagrams to diagnose and repair
DaimlerChrysler Corporation vehicles, it is important
to understand all of their features and characteris-
tics.
Diagrams are arranged such that the power (B+)
side of the circuit is placed near the top of the page,
and the ground (B-) side of the circuit is placed near
the bottom of the page (Fig. 1).
All switches, components, and modules are shown
in the at rest position with the doors closed and the
key removed from the ignition (Fig. 2).Components are shown two ways. A solid line
around a component indicates that the component is
complete. A dashed line around the component indi-
cates that the component is being shown is not com-
plete. Incomplete components have a reference
number to indicate the page where the component is
shown complete.
It is important to realize that no attempt is made
on the diagrams to represent components and wiring
as they appear on the vehicle. For example, a short
piece of wire is treated the same as a long one. In
addition, switches and other components are shown
as simply as possible, with regard to function only.
SYMBOLS
International symbols are used throughout the wir-
ing diagrams. These symbols are consistent with
those being used around the world (Fig. 3).
WJ8W-01 WIRING DIAGRAM INFORMATION 8W - 01 - 1

BOOST PRESSURE SENSOR (DIESEL) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K4 20BK/LB SENSOR GROUND
2 Y53 20BK/YL BOOST PRESSURE SENSOR SIGNAL
3 K6 20VT/WT SENSOR REFERENCE VOLTAGE B
BRAKE LAMP SWITCH - GRAY 6 WAY
CAV CIRCUIT FUNCTION
1 K29 18WT/PK SECONDARY BRAKE SWITCH SIGNAL
2 Z238 18BK (LHD) GROUND
2 Z243 18BK (RHD) GROUND
3 V32 22OR/DG (GAS) SPEED CONTROL POWER SUPPLY
4 V30 22DB/RD (GAS) SPEED CONTROL BRAKE SWITCH OUTPUT
5 L50 20VT/TN (LHD) PRIMARY BRAKE SWITCH SIGNAL
5 L50 20WT/TN (RHD) PRIMARY BRAKE SWITCH SIGNAL
6 F32 20PK/DB FUSED B(+)
C100 - BLACK (RIGHT HEADLAMP AND DASH
SIDE)
CAV CIRCUIT
1 T40 12LG
2 K125 18WT/DB
3 K20 18DG
C100 - BLACK (BATTERY SIDE)
CAV CIRCUIT
1 T40 12LG
2 K125 18WT/DB
3 K20 18DG
C101 (4.0L RHD) - LT. GRAY (ENGINE SIDE)
CAV CIRCUIT
1 B22 18DG/YL
2 K99 18BR/OR
3 K299 18BR/WT
4 K6 18VT/BK
5 C18 18DB
6-
8W - 80 - 12 8W-80 CONNECTOR PIN-OUTWJ

C101 (4.0L RHD) - LT. GRAY (HEADLAMP AND
DASH SIDE)
CAV CIRCUIT
1 B22 18DG/YL
2 K99 18LB/OR
3 K299 18BR/WT
4 K6 18VT/BK
5 C18 18DB
6-
C101 (4.7L RHD) - BLACK (ENGINE SIDE)
CAV CIRCUIT
1 K4 18BK/LB (HIGH OUTPUT)
2 K99 18BR/OR
3 C18 18DB
4 K299 18BR/WT
5 T6 18VT/WT
6 K6 18VT/BK
7 K4 18BK/LB (HIGH OUTPUT)
8 K142 18GY/BK (HIGH OUTPUT)
9 T10 18YL/DG
10 -
11 -
12 B22 18DG/YL
13 -
14 K42 18DB/LG (HIGH OUTPUT)
C101 (4.7L RHD) - BLACK (LEFT HEADLAMP
AND DASH SIDE)
CAV CIRCUIT
1 K4 18BK/LB
2 K99 18BR/OR
3 C18 18DB
4 K299 18BR/WT
5 T6 18OR/WT
6 K6 18VT/BK
7 K4 18BK/LB
8 K142 18GY/BK
9 T10 18YL/DG
10 -
11 -
12 B22 18DG/YL
13 -
14 K42 18DB/LG
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 13

C102 (DIESEL) - BLACK (LEFT HEADLAMP AND
DASH SIDE)
CAV CIRCUIT
1 D21 18PK
2 D25 18VT/YL
3 K226 18DB/WT
4 D52 18LG/VT
5 D51 18DG/WT
6 B22 18DG/YL
7 F991 20OR/DB
8 T752 18DG/OR
9 K236 18GY/PK
10 K132 18BR/PK
11 A82 18PK/LG
12 K152 18WT
13 L50 18WT/TN
14 K29 18WT/PK
C102 (DIESEL) - BLACK (ENGINE SIDE)
CAV CIRCUIT
1 D21 20PK
2 D25 20VT/YL
3 K226 20DB/WT
4 D52 16DG/WT
5 D51 16WT
6 B22 20DG/YL
7 F991 20RD/DB
8 T752 20DG/RD
9 K236 20GY/PK
10 K132 20BR/PK
11 A82 16PK/DG
12 K152 20WT
13 L50 20WT/DB
14 K29 20WT/PK
C102 (GAS RHD) - BLACK (RIGHT HEADLAMP
AND DASH SIDE)
CAV CIRCUIT
1 A30 14RD/WT (4.7L)
2 F991 20OR/DB
3 K173 18LG
4 F42 18DG/LG
5 A7 14RD/BK
6 L1 18VT/BK
7 Z306 20BK/LG
8 T41 18BK/WT
9-
10 K4 20BK/LB
11 K200 18VT/OR (4.7L)
12 C2 18DB/YL
13 -
14 A142 14DG/OR
8W - 80 - 14 8W-80 CONNECTOR PIN-OUTWJ

C102 (GAS RHD) - BLACK (ENGINE SIDE)
CAV CIRCUIT
1 A30 14RD/WT (4.7L)
2 F991 18OR/DB
3 K173 18LG
4 F42 18DG/LG
5 A7 14RD/BK
6 L1 18VT/BK
7 Z306 20BK/LG
8 T41 18BK/WT
9-
10 K4 18BK/LB
11 K200 18VT/OR (4.7L)
12 C2 18DB/YL
13 -
14 A142 14DG/OR
C103 (DIESEL) - GRAY (LEFT HEADLAMP AND
DASH SIDE)
CAV CIRCUIT
1 T41 18BK/WT
2 K173 18LG
3 C2 18DB/PK
4-
5 F142 14OR/DG
6 K51 18DB/YL
7 K25 18VT/LG
8 Y42 18OR/DB
9 C18 18DB
10 K4 20BK/LB
11 K6 18VT/WT
12 -
13 T40 12BR
14 F15 18DB/WT
C103 (DIESEL) - GRAY (ENGINE SIDE)
CAV CIRCUIT
1 T41 20BK/WT
2 K173 20GY
3 C3 14DB/BK
4-
5 F142 16RD/DG
6 K51 20DB/YL
7 K25 20VT/DG
8 Y42 20RD/DB
9 C18 20DB
10 K4 16BK/LB
11 K6 16VT/WT
12 -
13 T40 12DG
14 F15 20DB/WT
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 15

C103 (GAS) - GRAY (RIGHT HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 F22 20WT/PK (EXCEPT 4.7L RHD)
1 F22 18WT/TN (4.7L RHD)
2 T6 18OR/WT (4.7L LHD)
2 C18 20DB (4.0L LHD BUILT-UP-EXPORT)
2 C18 18DB (4.0L EXCEPT BUILT-UP-EXPORT)
3 D20 20LG (4.7L LHD)
3 D20 18LG (4.7L RHD)
4 D21 20PK (4.7L LHD)
4 K299 18BR/WT (4.0L LHD)
4 D21 18PK (4.7L RHD)
5 B22 18DG/YL (LHD)
6 K20 18DG
7 K30 20PK (4.0L RHD)
7 K30 18PK/YL (4.7L RHD)
7 K30 20PK/YL (LHD)
8 A142 14DG/OR (4.0L LHD)
8 T10 18DG/LG (4.7L LHD)
9 T16 14RD (4.7L LHD)
10 D25 18VT/YL (4.7L RHD)
10 D25 18VT/YL (4.7L EXCEPT BUILT-UP-EXPORT)
10 D25 20VT/YL (4.7L LHD BUILT-UP-EXPORT)
11 Z305 20BK/OR
12 F45 18YL/RD (4.7L RHD)
12 T15 18YL/BR (4.0L)
12 F45 18YL/RD (4.7L EXCEPT BUILT-UP-EXPORT)
12 F45 20YL/RD (4.7L LHD BUILT-UP-EXPORT)
13 K6 18VT/BK (4.0L LHD)
14 F142 18OR/DG
C103 (GAS) - GRAY (ENGINE SIDE)
CAV CIRCUIT
1 F22 18WT/PK
2 C18 18DB (4.0L LHD)
2 K200 18VT/OR (4.7L RHD)
3 K99 18BR/OR (4.0L LHD)
3 D20 18LG (4.7L RHD)
4 K299 18BR/WT (4.0L BUILT-UP-EXPORT)
4 D21 18PK (4.7L RHD)
5 B22 18DG/YL (4.0L LHD)
6 K20 18DG
7 K30 18PK/YL
8 A142 14DG/OR (4.0L LHD)
9 T16 14RD (4.7L)
10 D25 18WT/VT (4.7L)
11 Z305 20BK/OR
12 T15 18LG (4.0L LHD)
12 F45 18YL/RD (4.7L)
13 K6 18VT/BK (4.0L LHD)
13 K199 18DB/WT (4.7L LHD)
14 F142 18OR/DG
8W - 80 - 16 8W-80 CONNECTOR PIN-OUTWJ

C104 - LT. GRAY (RIGHT HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 K200 18VT/OR (4.0L EXCEPT BUILT-UP-EXPORT)
1 K4 18BK/LB (4.7L HIGH OUTPUT)
2 K99 18BR/OR (4.7L)
2 F991 20OR/DB (4.0L)
3 K173 18LG (4.0L)
4 F42 18DG/LG (4.0L)
5 A7 14RD/BK (4.0L)
5 K4 18BK/LB (4.7L HIGH OUTPUT)
6 L1 18VT/BK (4.0L)
6 K142 18GY/BK (4.7L HIGH OUTPUT)
7 Z306 20BK/LG (4.0L)
7 K299 18BR/WT (4.7L)
8 C18 18DB (4.7L)
8 T41 18BK/WT (4.0L)
9 K6 18VT/BK (4.7L)
9 C2 18DB/YL (4.0L)
10 K4 18BK/LB (4.0L)
10 K42 18DB/LG (4.7L HIGH OUTPUT)
C104 - LT. GRAY (ENGINE SIDE)
CAV CIRCUIT
1 K200 18VT/OR (EXCEPT 4.0L BUILT-UP-EXPORT)
2 F991 18OR/DB
3 K173 18LG
4 F42 18DG/LG
5 A7 14RD/BK
6 L1 18VT/BK
7 Z306 20BK/LG
8 T41 18BK/WT
9 C2 18DB/YL
10 K4 18BK/LB
C105 (DIESEL) - GRAY (LEFT HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 C13 18DB/OR
2 F300 18RD/BK
3 V37 18RD/LG
4 Z305 20BK/OR
5 Z306 20BK/LG
6 L1 18VT/BK
7-
8-
9-
10 -
11 -
12 -
13 -
14 -
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 17

C106 (DIESEL) - GRAY (RIGHT HEADLAMP AND
DASH SIDE)
CAV CIRCUIT
A-
B-
C-
D-
E-
F-
G-
H-
J-
K-
L-
M-
1 F15 18DB/WT
2-
3 G31 20VT/LG
4 G32 20BK/LB
5 G18 20PK/BK
6-
7-
8-
9-
10 Z231 18BK (RHD)
11 K4 18BK/LB (LHD)
11 G9 18GY/BK (RHD)
12 K6 18VT/WT (LHD)
13 -
14 -
15 -
16 K173 18LG
17 -
18 X2 18DG/RD
19 C18 18DB (LHD)
20 Y42 18OR/DB
21 -
22 -
23 -
24 -
25 B7 18WT
26 B6 18WT/DB
27 -
28 -
29 -
30 -
31 -
8W - 80 - 20 8W-80 CONNECTOR PIN-OUTWJ

C106 (DIESEL) - GRAY (RIGHT HEADLAMP AND
DASH SIDE)
CAV CIRCUIT
32 -
33 -
34 -
35 -
36 -
37 -
38 L13 18BR/YL
39 -
40 -
41 -
42 R46 18BR/LB
43 R47 18TN
44 -
45 -
46 -
47 -
48 -
49 -
50 -
51 -
52 -
53 L7 20BK/YL
54 L60 20TN
55 -
56 -
57 L39 20LB
58 -
59 L44 18VT/RD
60 L34 18RD/OR
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 21

C106 (GAS) - GRAY/RHD BLACK/LHD (RIGHT
HEADLAMP AND DASH SIDE)
CAV CIRCUIT
A A149 12RD/TN
B A148 16LG/RD
C C1 12DG
D-
E A10 12RD/DG
F A1 12RD
G A145 10WT/RD
H A146 10OR/WT
J A147 10RD/GY
L A2 12PK/BK
K A148 10PK/WT
M A20 12RD/DB
1 A141 16DG/BK (RHD)
1 A141 16DG/WT (LHD)
2 F42 18DG/LG (RHD)
2 G18 18PK/BK (LHD)
3 V3 16BR/WT
4 V4 16RD/YL
5 V55 16TN/RD
6 V6 16DB
7 F22 18WT/TN (4.7L RHD)
7 F22 20WT/PK (EXCEPT 4.7L RHD)
8 F12 18DB/WT
9 K52 18PK/BK (LHD)
10 K29 18WT/PK (LHD)
10 Z231 18BK (RHD)
11 K226 18LB/YL (LHD)
11 K512 18RD/YL (4.7L RHD)
12 K107 18OR/PK (EXCEPT
BUILT-UP-EXPORT)
13 K106 18WT/DG (EXCEPT
BUILT-UP-EXPORT)
14 C13 18DB/OR (RHD)
14 T41 18BK/WT (LHD)
15 V35 20LG/RD (RHD)
16 V36 20TN/RD (RHD)
17 G9 18GY/BK (RHD)
18 K25 18VT/LG (RHD)
19 K51 18DB/YL (RHD)
20 K125 18WT/DB (EXCEPT
BUILT-UP-EXPORT)
21 K125 18WT/DB (RHD)
22 K31 18BR (RHD)
23 -
24 -
25 B7 18WT
26 B6 18WT/DB
27 X3 20BK/RD
28 G32 20BK/LB
29 -
30 G31 20VT/LG
31 -
32 V32 18OR/DG (LHD)
33 V30 20DB/RD
34 V16 20VT
8W - 80 - 24 8W-80 CONNECTOR PIN-OUTWJ