ad blue DODGE TRUCK 1993 Service Repair Manual

•

ELECTRICAL
8A - 13 GENERATOR TEST PROCEDURES ON
VEHICLE

INDEX

page
Current
Output
Test
......................
14
Diagnostic Procedures
13

General
Information
13
Generator
Output
Wire Resistance Test
.......
13
page
How
to
Use
Malfunction
Indicator
(Check Engine) Lamp
for
Fault
Codes
17

Operational Check
with
Voltmeter
............
13
Using
On-Board Diagnostic System
15

GENERAL
INFORMATION
The generator
is
belt-driven
by the
engine.
All en­

gines
use
serpentine drive. The amount
of DC
current produced
by the
gener­
ator
is
controlled
by the
Powertrain Control Module (PCM).
All vehicles
are
equipped with
On
Board Diagnos­
tics (OBD).
All OBD
sensing systems
are
monitored
by
the PCM. The PCM
will store
in
electronic mem­ ory
any
detectable failure within
the
monitored cir­

cuits.
Refer
to
USING ON-BOARD DIAGNOSTIC SYSTEM
in
this group
for
more information.

OPERATIONAL CHECK
WITH
VOLTMETER
When
the
ignition switch
is
turned
to the RUN po­

sition, battery potential will register
on the
voltme­
ter. During engine cranking
a
lower voltage will appear
on the
meter. With
the
engine running,
a

voltage reading higher than
the
first reading (igni­
tion
in RUN)
should register.

DIAGNOSTIC PROCEDURES
If
the
indicator does
not
operate properly,
or if an

undercharged
or
overcharged battery condition
oc­

curs,
the
following procedures
may be
used
to
diag­
nose
the
charging system. Remember that
an
undercharged battery
is
often
caused
by:
• accessories being left
on
overnight
•
or by a
defective switch which allows
a
bulb, such
as a
trunk
or
glove
box

light,
to
stay
on
(refer
to
Ignition
Off
Draw).
WISUAL
INSPECTION

• Inspect condition
of
battery cable terminals, bat­
tery posts, connections
at
engine block, starter motor solenoid
and
relay. They should
be
clean
and
tight.
Repair
as
required.
• Inspect
all
fuses
in the
fuse block
for
tightness
in

receptacles. They should
be
properly installed
and

tight. Repair
or
replace
as
required.
• Inspect generator mounting bolts
for
tightness.
Re­

place
or
torque bolt
as
required (refer
to
Torque Specifications).
• Inspect generator drive belt condition
and
tension.
Tension
or
replace belt
as
required. Refer
to
Belt
Tension Specifications. • Inspect connection
at
generator
B+
output.
It

should
be
clean
and
tight. Repair
as
required.

GENERATOR
OUTPUT
WIRE RESISTANCE TEST
(FIG.
1)
Generator output wire resistance test will show
amount
of
voltage drop across generator output wire
between generator
BAT
terminal
and
battery posi­ tive post.

PREPARATION
(1) Before starting test make sure vehicle
has a

fully charged battery. Test
and
procedures
on how to
check
for a
fully charged battery
are
shown
in
Bat­
tery section
of
this Group.
(2) Turn
OFF
ignition switch.
(3)
Disconnect negative cable from battery.

(4)
Disconnect generator output wire from genera­
tor output Battery terminal. (5) Connect
a 0-150
ampere scale
D.C.
ammeter
in

series between generator
BAT
terminal
and
discon­
nected generator output wire. Connect Positive lead
to generator
BAT
terminal
and
Negative lead
to
dis­ connected generator output wire. (6) Connect Positive lead
of a
test voltmeter
(Range
0-18
volts minimum)
to
disconnected genera­
tor output wire. Connect negative lead
of
test voltme­
ter
to
battery positive cable
at
positive post. (7) Connect
one end of a
Jumper Wire
to
ground
and with other
end
probe green
K20
lead wire
at

back
of
generator
(Fig. 1).
(This will generate
a
fault
code).

CAUTION:
Do not
connect blue
A142
lead
of
wiring
to ground. Refer
to
Group
8W
-
Wiring Diagrams
for
more information.

(8) Connect
an
engine tachometer
and
connect neg­
ative cable
to
battery.
(9) Connect
a
variable carbon pile rheostat
be­

tween battery terminals.
Be
sure carbon pile
is in
"Open"
or "Off
position before connecting leads.
See

Battery Section, Load Testing
for
instructions.

TEST
(1) Start engine. Immediately after starting,
re­

duce engine speed
to
idle.

•

ELECTRICAL
8A - 15 a

CASE
GROUND
CAPACITOR
ALTERNATOR ~L FIELD
TERMINALS

A
142-DG/OR BATTERY
VOLTAGE K20-DG
—!

GROUND
CASE

GROUND
til

ALTERNATOR BATTERY
TERMINAL ENGINE
CONTROLLER TO ENGINE
CONTROLLER TERMINAL
51

LESS
THAN
BATTERY VOLTAGE A21
DB-
.....
IGNITION SWITCH
20 AMP FUSE
AUTO
AH ^

SHUTDOWN POWER
RELAY
DISTRIBUTION

\
CENTER TEST
AMMETER JUMPER WIRE
TO GROUND
TEST
VOLTMETER
GO
5—n
DISCONNECTED
ALTERNATOR OUTPUT WIRE GROUND

ACC
Bl
OFF
RUN OFF
START*T

|ACC

CARBON
PILE RHEOSTAT
J938A-18

Fig.
2 Generator Current Output Test—Typical

CAUTION:
Do not
connect
blue
A142
lead
of
wiring

to ground.
Refer
to
Group
8W -
Wiring
Diagrams
for
more
information.

TEST
(1) Start engine. Immediately after starting reduce
engine speed to idle. (2) Adjust carbon pile and engine speed in incre­
ments until a speed of 1250 rpm and voltmeter read­
ing of 15 volts is obtained.

CAUTION:
Do not
allow
voltage
meter
to
read
above
16 volts.

(3) The ammeter reading must be within limits
shown in generator specifications in back of this
group for that size of generator being tested.

RESULTS
(1) If reading is less than specified and generator
output wire resistance is not excessive, the generator
should be replaced. Refer to Group 8B - Generator
Service for information.
(2) After current output test is completed reduce
engine speed, turn off carbon pile and turn off igni­
tion switch.
(3) Disconnect negative cable from battery. (4) Remove test ammeter, voltmeter, tachometer
and carbon pile. (5) Remove Jumper Wire (Fig. 2).
(6) Connect generator output wire to generator
BAT terminal post. Tighten nut to 5-6 Nnn (45-75 in.

lbs.).

(7) Connect negative cable to battery.
(8) Use DRB II Scan Tool to erase diagnostic trou­
ble code.

USING
ON-BOARD
DIAGNOSTIC
SYSTEM
OPERATION
OF
ON-BOARD
DIAGNOSTIC

SYSTEM

The Powertrain Control Module monitors critical
input and output circuits of the charging system
making sure they are okay. Some are checked contin­
uously and some are only checked under certain con­
ditions.
If the OBD system senses that one of the critical
circuits is bad, it will consider this a real problem
and put a DTC into memory. Each input and output
circuit monitored by the OBD system has its own

DTC.
The DTC will stay in memory as long as the
circuit continues to be bad. If the problem does not
occur again after the code is put into memory, the
Powertrain Control Module will clear the memory af­
ter 50 to 100 engine starts.

•
IGNITION
SYSTEMS
80 - 27

Fig.
8 Ignition
Switch
Mounting
Pad (7) Check for proper operation of push-to-lock, halo
lighting, Accessory, Lock, Off, Run, Start, column
lock and shift lock (if applicable). IGNITION SWITCH CIRCUITS

.__|.
1
2 3 4 5 6 7

IGNITION
SWITCH CONNECTOR LOOKING
INTO
SWITCH
WIRE
CAVITY WIRE
COLOR APPLICATION

1
YELLOW
STARTER
RELAY
2
DARK
BLUE
IGNITION
RUN/START
3
WHITE
/
BLACK
BRAKE
WARNING
LAMP
4
PINK/BLACK
IGNITION
SWITCH
BATTERY FEED
5
BLACK/ORANGE

OR BLACK/TAN RUN ACCESSORY
6
BLACK
/
WHITE
ACCESSORY

7
RED
IGNITION
SWITCH
BATTERY FEED

J938D-18

8H - 8
VEHICLE SPEED CONTROL SYSTEM

• (4) Disconnect the 4-way connector going to the
servo (Figs. 1 and 2), The blue wire with the red
tracer of the main harness 4-way connector should
read approximately battery voltage. If not, check for loose connections, brake switch adjustment or, repair
the main harness as necessary.
(5) Connect a jumper wire between the male and
female terminals of the blue wire with red tracer.
The other 3 male terminals from the servo should show battery voltage. If not, replace the servo. (6) Turn ignition OFF. Using an ohmmeter, con­
nect one lead to a good body ground. Touch the other
lead to the black (BK) wire terminal in the 4-way
connector of the main harness. The meter should
show continuity. If not, repair the ground circuit as
necessary. A
VACUUM

y~
HOSE
J918H-24

Fig.
1 Servo And Harness Connector—Gas
Engine—Typical

ELECTRICAL TESTS AT POWERTRAIN CONTROL MODULE
(1) Unplug 60-way connector from Powertrain Con­
trol Module, located on the left fender (Fig. 3).
(2) Connect negative lead of voltmeter to a good
body ground near the module. (3) For the following tests, the ignition switch
must be in the ON position. Refer to Fig. 4 for con­
troller terminal locations. Touch the positive lead of
the voltmeter to the terminal in cavity number 33.
With the speed control switch in the OFF position,
the voltmeter should read 0 volts. With the speed
control switch in the ON position, the voltmeter should read battery voltage. If not, repair the main
harness as necessary.
(4) Touch the positive lead of the voltmeter to the
terminal in cavity number 53. As in step (3), the J918H-25
Fig. 2 Servo And Harness Connector—Diesel Engine PCM
MOUNTING
BOLTS

PCM CONNECTOR CONNECTOR MOUNTING BOLT
J9314-165

Fig.
3 Powertrain Control
Module
and
Connector
Location

voltmeter should read 0 volts with the switch in the OFF position and battery voltage with the switch in
the ON position. (5) Touch the positive lead of the voltmeter to the
terminal in cavity number 48. With the speed control switch in the OFF position, the voltmeter should
read 0 volts. With the switch in the ON position, the voltmeter should read battery voltage. Pressing the SET button should cause the voltmeter to change

VEHICLE
SPEED
CONTROL SYSTEM
8H - 9

rain

oooooooooo

1 10,
.oooooooooo

\21 30
„. \£] 50 x
OOOOOOOOOO OOOOOOOOOO^
11
20

OOOOOOOOOO
51
31 1 6ooooooooo60y/ Tratr
TJKT

RR8HC7

Fig.
4 Powertrain Control Module 60-Way Connector
Shown from Terminal End
from battery voltage to 0 volts for as long as the switch is held. If not, perform the speed control
switch test. If the switch is not at fault, then check
the main harness and repair as necessary.
(6) Touch the positive lead of the voltmeter to the
terminal in cavity number 50. The voltmeter should read 0 volts with the speed control switch in either
the OFF or ON position. With switch in either RE­ SUME or SET position, the voltmeter should read
battery voltage. If not, perform the speed control switch test. If the switch is not at fault, then check
the main harness and repair as necessary.
(7) Touch the positive lead of the voltmeter to the
terminal in cavity number 49. The voltmeter should read 0 volts with the switch in the OFF position.
With the switch in the ON position, the voltmeter should read battery voltage. The voltmeter will con­
tinue to read battery voltage when either the SET or
RESUME switch is pressed. If not, perform the speed control switch test. If the switch is not at fault, then
check the main harness and repair as necessary . (8) Turn key OFF. Using an ohmmeter, connect
one lead to a good body ground and touch the other
lead to the terminal in cavity number 29. With the
brake pedal released, the meter should show continu­ ity. When the pedal is depressed, the meter should
show open circuit.

VEHICLE
SPEED
CONTROL SWITCH TEST
To check the switch, remove the switch from its
mounting position. Use an ohmmeter and refer to the
Switch Continuity Chart to determine if continuity is
correct. If there is no continuity at any one of the
switch positions, replace the switch.

STOP
LAMP SWITCH TEST
(1) Disconnect connector at stop lamp switch. Us­
ing an ohmmeter, continuity may be checked at
switch side of connector as follows (Fig. 5): (a) With brake pedal released, there should be:
• continuity between black (BK) and white with
pink tracer (WT/PK) wires
• continuity between yellow with red tracer (YL/RD) and dark blue with red tracer (DB/RD) wires
• No continuity between pink (PK) and white (WT)

wires.
SPEED CONTROL SWITCH CONTINUITY
CHART
CONNECTOR
TERMINAL
END

JE
El

SWITCH

SPEED
CONTROL
SWITCH
CONTINUITY

SWITCH!
rea?!®^
CONTINUITY
BETWEEN

OFF PIN 1
AND PIN 4

ON PIN
1 AND PIN 4

PIN 1
AND PIN 2

PIN
2 AND PIN 4

ON
AND
SET PIN
1
AN D
PIN 2

ON
AND
RESUME PIN
1 AND PIN 3

J928H-4
(b) With brake pedal depressed, there should be:
• continuity between pink (PK) and white (WT)

wires.
• No continuity between black (BK) and white with
pink tracer (WT/PK) wires.
• No continuity between yellow with red tracer (YL/
RD) and dark blue with red tracer (DB/RD) wires. (2) If the above results are not obtained, the stop
lamp switch is defective or out of adjustment.
Stop lamp switch adjustment is detailed in Group 5 -
Brakes.

VACUUM SUPPLY TEST
(1) Disconnect vacuum hose at the servo and in­
stall a vacuum gauge in the hose (Fig. 6). (2) Start engine and observe gauge at idle. Vac­
uum gauge should read at least ten inches of mer­
cury. (3) If vacuum does not meet this requirement,
check for vacuum leaks or poor engine performance.

SPEED
CONTROL
CABLE
ADJUSTMENT-DIESEL
ENGINE

(1) The gap between the end of the slot on the ca­
ble and the bellcrank pin must be as small as possi­
ble (0 to 1mm) without moving the throttle. If gap is not correct, remove adjustment clip. Push protective

8W
- 2
WIRING
DIAGRAMS

•
WIRE CODE
IDENTIFICATION

Each wire shown in the diagrams contains a code
(Fig. 3) which identifies the main circuit, part of the
main circuit, gauge of wire, and color. The color is shown as a two letter code which can be identified by
referring to the Wire Color Code Chart (Fig. 4). If
the wire has a tracer and it is a standard color an asterisk will follow the main wire color. If the tracer
is non-standard the main wire color will have a slash (/) after it followed by the tracer color. 18
LB/YL*
COLOR
OF
WIRE

(Light
Blue
with
Yellow
Tracer)
.
GAUGE
OF
WIRE
(18
Gauge)

PART
OF
AAAIN CIRCUIT

(Varies
Depending
on
Equipment)

AAAIN CIRCUIT
IDENTIFICATION
918W-16

Fig.
3
Wire
Color
Code
Identification

CIRCUIT IDENTIFICATION
All circuits in the diagrams use an alpha/numeric
code to identify the, wire and its function. To identify
which circuit code applies to a system, refer to the
Circuit Identification Code Chart. This chart shows
the main circuits only and does not show the second­ ary codes that may apply to some models.
COLOR

CODE COLOR
STANDARD
TRACER

COLOR COLOR

CODE
COLOR
STANDARD

TRACER
CODE
BL BLUE WT
OR ORANGE

BK
BK
BLACK
WT PK
PINK
BK
OR WT

BR
BROWN
WT RD
RED WT
DB DARK
BLUE WT
TN
TAN WT
DG DARK
GREEN WT
VT

VIOLET
WT
GY GRAY
BK

WT

WHITE
BK

LB
LIGHT

BLUE
BK

YL YELLOW

BK

LG
LIGHT

GREEN
BK

*

WITH
TRACER

918W-136
Fig.
4
Wire
Color
Code
Chart

LOCATING
A
SYSTEM
OR
COMPONENT
To locate a system or component in the diagrams,
refer to the alphabetical index at the front of the di­ agrams. Determine the diagram sheet number. Sheet
numbers are located at the lower right or left hand
corner of each sheet. Page numbers at the top of
the page do not apply to diagram sheets. The diagram index identifies the main system and
all components that relate to that system. There are
also sections of the index that identify specific com­
ponents only (for example modules, lamps, etc.). Re-

MAIN
CIRCUIT IDENTIFICATION

CIRCUIT
DESCRIPTION
CIRCUIT
DESCRIPTION

A
Battery
Feed: Fused and Unfused
P
Power
Assist
System:
Locks,
Mirrors

B
ABS
System Q Power
Assist
System: Windows

C
Air Conditioning System

R
Airbag System

D
CCD
(+),
CCD
(-)
S
Air Suspension, Automatic Load Leveling

E
Interior
Lamp
Illumination
T Electronic Automatic Transaxle
F
Battery
Feed: Fused and Unfused
V
Windshield Wipers and Washers,

G
Sensors,
Sending Units, Switches Vehicle Speed Control System

K
Powertrain
Central
Module W Power
Assist
System: Windows

L
Exterior
Lighting, Stop Lamp Switch
X
Horn, Radio, Radio Speakers, Power Locks
M
Interior
Lamps
Z
Ground Circuits: Includes power and signal

Interior
Lamps

grounds
for PCM

938W-17

•

WIRING
DIAGRAMS
8W - 3 fer to a components name in the index if you are
unclear as to what a system may be called.
Diagram pages are arranged starting with the bat­
tery and fuses. Then working into charging, starting, and ignition systems. After this they start at the
front of the vehicle and work to rear of the vehicle.
The diagrams end with connector identification

pages.

COMPONENT
IDENTIFICATION
To find a components actual location on the vehicle
refer to the wiring and components section index. This section shows the wire harness routing and the compo­
nents location in the vehicle. When using this section
refer to the wiring diagrams for the general location of
the component. Then use the component identification index to locate the proper figure number.

SPLICE
LOCATIONS
Splices are indicated in the wiring diagrams by a
diamond with splice circuit code within it (Fig. 5 ex­ ample 1). If there is more than one splice per circuit
splice code a small box will be connected to the dia­
mond with the splice number in it (Fig. 5 example 2). To locate a splice in the wire harness determine
the splice number from the wiring diagrams, then re­
fer to the splice location index. This section shows
the general location of the splice in the harness.

EXAMPLE
1
EXAMPLE
2 918W-18

Fig.
5 Wiring
Splice
Examples

CONNECTORS
The connectors shown in the diagram are viewed from
the terminal end unless otherwise specified. For view­ ing bulkhead and engine controller connectors refer to
the back of the wiring diagrams. This area shows major connectors for pin and cavity identification.

TROUBLESHOOTING
WIRING
PROBLEMS
When troubleshooting wiring problems there are
six steps which can aid in the procedure. The steps
are listed and explained below. (1) Verify the problem.
(2) Verify any related symptoms. Perform opera­
tional checks on components in the same circuit as the problem area. Refer to the wiring diagram fuse
application chart for circuit information. (3) Analyze the symptoms. Use the wiring dia­
grams to determine what the circuit is doing, where
the problem most likely is occurring and where the diagnosis will continue. (4) Isolate the problem area. (5) Repair the problem.
(6) Verify proper operation. For this step check for
proper operation of all items on the circuit repaired. Refer to the wiring diagram fuse application chart.

FUSIBLE
LINKS
Vehicle wiring harnesses are equipped with fusible

links.
For protection against harness damage in the
event of a short. Fusible links are color coded as to
wire gauge size. Refer to the fusible link chart for color and gauge identification (Fig. 6).
Wire and
Gauge
Color
Code
Color

12 Ga.
BK
Black

14 Ga.
RD
Red

16 Ga.
DB
Dark
Blue

18 Ga.
GY
Gray

20 Ga.
OR
Orange

22 Ga.
WT
White
918W-19

Fig.
6 Fusible
Link
Chart

HARNESS
REPAIR

FUSIBLE
LINK
REPLACEMENT

CAUTION:
Do not replace blown fusible
links
with
a

standard
wire.
Only
use fusible type
wire
with
hyp-

alon
insulation or
damage
to the electrical
system
could
occur.
Also
make
sure
correct
gauge
of
wir­
ing
is
used.
Refer to the wiring
diagrams
for proper

gauge
and
color.

When a fusible link blows it is important to find
out what the problem is. They are placed in the elec­
trical system for protection against shorts to ground
that can be caused by a component or various wiring
failures. Do not just replace the fusible link to correct the problem.
When diagnosing a faulty fusible link it is impor­
tant to check the wire carefully. In some instances
the link may be blown and it will not show through the insulation, the wire should be checked over its
entire length for internal breaks.
(1) Disconnect battery negative cable.
(2) Cut out the blown portion of the fusible link.
(3) Strip 1 inch of insulation from each end of the
existing fusible link.
(4) Place a piece of heat shrink tubing over one
side of the fusible link. Make sure the tubing will be
long enough to cover and seal the entire repair area.
(5) Cut a replacement piece of fusible link approx­
imately two inches longer than the piece removed. (6) Remove one inch of insulation from each end of
the replacement fusible link.

CAVITY

FUSE/

COLOR ITEMS FUSED
CAVITY
FUSE/

COLOR ITEMS FUSED
10
11
12
13 2 AMP
GY VEHICLE SPEED CONTROL
5 AMP TN
GAUGES,
BRAKE WARNING LAMP, SEAT BELT WARNING
LAMP, BUZZER, LOW OIL LAMP, CHECK ENGINE LAMP,
ANTI-LOCK LAMP, TAILGATE OPEN LAMP, 4WD LAMP, O/D MODULE, LOW FUEL LAMP,
WAIT
TO START LAMP
WATER-IN-FUEL LAMP 14
3 AMP
VT
20 AMP YL BACK-UP LAMP, HEATED REAR WINDOW
15 10 AMP
RD
ILLUMINATION
LAMPS, A/C HEATER LAMP, ASH
RECEIVER LAMP, RADIO LAMP, TRANSMISSION
OVERDRIVE SWITCH LAMP, TACHOMETER LAMP, HEATED REAR WINDOW SWITCH LAMP.
RADIO AND CLOCK MEMORY, POWER MIRRORS, GLOVE BOX LAMP, DOME LAMP, READING LAMP, MAP LAMP,
CARGO LAMP,
IGNITION
SWITCH LAMP, UNDERHOOD LAMP
20 AMP YL FUSE CAVITY #14,
TAIL
LAMPS, PARKING LAMPS, SIDE

AAARKER
LAMPS, LICENSE LAMPS, FRONT AND REAR CLEARANCE LAMPS, RADIO INTENSITY, HORNS
20 AMP YL STOP LAMPS, KEY-IN & HEADLAMP ON BUZZER, RWAL
MODULE 30 AMP
CIRCUIT

BREAKER
TURN

SIGNAL
FLASHER 20 AMP
YL POWER DOOR LOCKS
15 AMP
BL
CIGAR LIGHTER
10 AMP RD RADIO AND CLOCK
20 AMP YL
TURN
SIGNALS, TACHOMETER PROVISION,
RWAL MODULE
20 AMP YL WINDSHIELD WIPERS
30 AMP LG A/C - HEATER BLOWER MOTOR
30 AMP
C/BRKR
POWER WINDOWS
20 AMP YL HAZARD FLASHER
AMPS

FUSE
COLOR
2 GY GRAY
3 VT

VIOLET

5 TN
TAN
10 RD
RED
15
BL
BLUE
20 YL YELLOW
30 LG
LIGHT
GREEN HAZARD
FLASHER
J938W-94

Fig. 12 Fuse Block and
Relay
Bank

WIRING
DIAGRAMS
8W - 75

Z8
18GY

PANEL
GROUND
Z09 18GY/BK
Bill
18LB -
_rrrRv_
(RIGHT 0F

~LL1U)
|
STEERING COLUMN)

(LEFT
REAR

FRAME
RAIL)
BLACK

B108 14WT/BR
-j=rf
B101 16LG/BK

-BLACK
18BK-
G11 18WT/BK
RESET
SWITCH
DUMP

ISO
SOL
BRAKE
WARNING
LAMP SWITCH
(LEFT
FRONT

FRAME
RAIL) DUAL SOLENOID
HYDRAULIC VALVE

GRAY
Gil

20WT
BK
BLUE

(LEFT
SIDE-UNDER INSTR/PANEL)
• • L50
18WT/TN

F32 20PK/DB
TO

BUZZER

(SEE
SH 77)

GROUND

SPLICE

(SEE
SH 48)
Bl13
18RD/VT

B114
18WT/VT
TO
HAZARD
L50
18WT/TN
?
FLASHER ^ SWITCH

(SEE
SH 56)

(TAPED
TO
HARNESS
NEAR
CONNECTOR) 8113
Bl14

18RD
18RD
VT
VT

F32 18PK/DB Zl
18BK 150
20WT/TN

Zl 20BK
V40
18WT/PK

TO
DATA LINK CONNECTOR

(SEE
SH 23)
RESISTOR

41
20PK

18WT V40
18WT

PK

i TO POWERTRAIN
CONTROL MODULE
II
CAVITY
29

(SEE
SH 37)
TWISTED
PAIR

BLACK
STOP
LAMP SWITCH
(LEFT FENDER

SIDE
SHIELD)
REAR WHEEL
ANT
I
-LOCK BRAKE SYSTEM

U938w-ii
(DIESEL ENGINE) R.W.A.L. SENSOR
(IN REAR DIFFERENTIAL)

AD
34

SW
- 90 WIRING DIAGRAMS
TO COMBINED
BUZZER

(SEE SH
77,78)

L30
18BR/YL
Zl
20BK

Ml 18PK
BLUE AD 49

MAP
LAMP AND CARGO LAMP
msu-n