1993 DODGE TRUCK fuse box diagram

clock coolant headrest fuse winter tyres fuel consumption

Page 334 of 1502

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
O

•

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.

Page 478 of 1502

DODGE TRUCK 1993 Service Repair Manual
•

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 wo

•

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.

Page 512 of 1502

DODGE TRUCK 1993 Service Repair Manual
WIRING
DIAGRAMS
8W
- 37

WIRING DIAGRAMS AD-BODY

INDEX

Wiring Diagram Name Sheet Number

A/C
Heater System
with
Diesel Engine ............ .69,70 Blower Motor
. .69

Compressor
.70

WIRING
DIAGRAMS
8W
- 37

WIRING DIAGRAMS AD-BODY

INDEX

Wiring Diagram Name Sheet Number

A/C
Heater System
with
Diesel Engine ............ .69,70 Blower Motor
. .69

Compressor
.70

Cycling Switch
.70
Diodes
70

Fuse
69
Low Pressure Switch
70

Resistor
. 69

Switch-Blower
. 69

Vacuum
Control
Switch
.69
Wide Open
Throttle
Cut-Out Relay
70

A/C
Heater System
with Gas
Engine .67,68 Blower Motor
.67

Compressor
.68

Cycling Switch
68
Low Pressure Switch
.68

Diodes
. .68
Fuse
. .67
Resistor
67

Switch-Blower
67

Vacuum
Control
Switch
.67
Wide Open
Throttle
Cutout Relay
68

Air Heater Relay Diesel Engine
.21
Air
Intake
Heater Diesel Engine
22

Anti-Lock Rear Brake System
with
Diesel Engine
.....
.33,34 Brake Warning Lamp Switch
34

Data Link Connector
33

Duel Solenoid Hydraulic Valve
34

Electronic Vacuum
Sensor
.34
Fuse
33

Module
.33
Park
Brake Switch
.33
Resistor
34

Rolls
Test Connector
33

Sensor
34

Stop
Lamp
34

Anti-Lock Rear Brake System
with Gas
Engine .31,32 Brake Warning Lamp Switch
.32

Data Link Connector
. .31

Dual Solenoid Hydraulic Valve
32

Fuse
31
Module
31
Park
Brake Switch
.31
Resistor
32

Rolls
Test Connector
31

Sensor
32

Stop
Lamp Switch
32

Back-Up
Lamp Switch
with
Diesel Engine
.7
Back-Up
Lamp Switch
with Gas
Engine
.9

Battery
.1,3,5
Brake Warning
Indicator
Lamp (Diesel Engine)
.57

Brake Warning
Indicator
Lamp
(Gas
Engine)
58

Brake Warning
Indicator
Lamp Switch (Diesel Engine)
. . . .34
Wiring Diagram Name Sheet Number
Brake Warning
Indicator
Lamp Switch
(Gas
Engine)
32
Bulkhead Disconnect 50-Way .85,86
Buzzer-Combined Headlamp,
Key In, and
Seat
Belt
. . .
.27,28

Bypass
Jumper
(Clutch
Pedal Position)
8

Cargo
Lamp .49,50
Cargo
Lamp Switch
49

Charging System
with
Diesel Engine ..............
.5,6
Battery
5

Generator
. .6

Charging System
with
Gas Engine
.3,4
Battery
3

Generator
, . .4

Cigar
Lighter,
Ash &
Glove
Box
Lamps
52

Circuit
Breakers Power Windows
2,71

Clearance Lamps Duel Rear Wheels
.
.41,43 Clearance Lamps Roof Mounted
40

Clockspring 30,36,38
Clutch Pedal Position Switch
.8

Cold
Start
Advance Motor
24

Compressor,
A/C
68,70 Data Link Connector 17,23,31,33
Data Link Connectors
Rear
Wheel Anti-Lock Diesel Engine
.33

Rear
Wheel Anti-Lock Gas Engine
31

Daytime Running
Light
Module
46

Diesel
Control
System .21,22,23,24,25,26
Air Heater Relay
. .21

Air
Intake
Heater
21
Automatic
Shut Down Relay
22

Cold
Start
24

Crankshaft Position
Sensor
. .25
Data Link Connector
. .23

Engine
Coolant Temp Switch
.26

Fuel Heater
24

Fuel Solenoid
24
Intake
Air
Temp
Sensor
25

Powertrain
Control
Module 21,22,23,25,26

Resistor
.24

Thermo Switch
24

Throttle
Position (Sensor)
26

Transmission Thermo Switch
. . .26

Vehicle Speed
Sensor
25,26 Water
in
Fuel
Sensor
.25

Dimmer Switch-Headlamp
. .47

Diode 68,70
Diode
and
Mold Assembly
51

Dome
and
Cargo Lamp
50

Door
Jamb Switches
49
Left
Switch
.49
Right Switch
49

Dual Solenoid Hydraulic Valve
.32
EMCC
System (3-Speed)
. .11

Page 513 of 1502

DODGE TRUCK 1993 Service Repair Manual
8W
- 38
WIRING
DIAGRAMS

• Wiring Diagram Name Sheet Number

EMCC
Relay
11

EMCC
Solenoid
11

Ground
11

EMCC
Relay
with Gas
Engine
11,16

EMCC
Solenoid
with Gas
Engine
11,12

8W
- 38
WIRING
DIAGRAMS

• Wiring Diagram Name Sheet Number

EMCC
Relay
11

EMCC
Solenoid
11

Ground
11

EMCC
Relay
with Gas
Engine
11,16

EMCC
Solenoid
with Gas
Engine
11,12

Engine
Oil
Pressure Sending
Unit
.27,28
Engine
Starter
Motor
7,9
Engine
Starter
Relay
.7,9

Engine
Starter
System 1,7,8,9 Back-Up Lamp
Switch
.7,9

Bypass
Jumper
(Clutch
Pedal
Position)
8

Clutch
Pedal
Position
Switch
8

Fuse
. 7,9

Motor
7,9
Park/Neutral
Position
Switch
. .7,9

Relay
7,9

Engine Temp Sending
Unit
.
.27,28
Flasher-Hazard Warning
.56
Flasher-Turn Signal
56

Four Wheel
Drive
Indicator
Lamp
13

Front
End
Lighting
. .
.43,44

Front
End
Lighting
(Canada) 45,46

Fuel
Gauge
81,82

Fuel
Tank Gauge
Level
Sending
Unit
Diesel Engine
77

Fuel
Tank Gauge
Level
Sending
Unit
with Gas
Engine
78
Fuel
Heater
Diesel Engine
24

Fuel
Solenoid Diesel Engine
.24

Fuse
Application
Chart
1,2

Fuse
Block Module
and
Relay Bank
82

Fuses
Fuse
1 2,36
Fuse
2
.........
2,10,12,13,14,58,77,78

Fuse
3
2,7,9,10,39
Fuse
4
1,30,47

Fuse
5
1,77,78
Fuse
6
......
.1,73

Fuse
7
1,10,52

Fuse
8
.2,10,61,63
Fuse
9
.2,10,31,33,56

Fuse
10
.2,10,54,55

Fuse
11
2,10,66,67,69

Fuse
12
2,10,71
Fuse
13 1,56
Fuse
14
1,47,52,61,63

Fuse
15
1,49,51,52,61,63,75
Fusible Links 1,2,3,4,5,6,21

Gas
Engine
Wiring
Connector
89

Gauge-Fuel .77,78

Generator
.4,6

Glove
Box
Lamp
Switch
52

Hazard Warning System
. .56
Headlamp Dimmer
Switch
47

Headlamp
Switch
1,47

Headlamp
Switch
Controlled
Interior
Lamps
Headlamps 43,44,

Heated
Rear Window
(Sport
Utility)
Heater
Motor
Resistor

Heater
System Wiring Diagram Name Sheet Number
Horn System
30
Identification
Lamps-Dual Rear Wheels
41,42

Identification
Lamps-Roof Mounted
. 40
Ignition
Coil
.16

Ignition
Switch
.2,10

Ignition
Switch
System
10

Ignition
System (Gas Engine)
.........
.15,16,17,18,19,20
Automatic
Shut Down Relay
.16
Camshaft
Position
Sensor
20

Crankshaft
Position
Sensor
.18

Data
Link
Connector
* . . .17
Engine Coolant Temp
Sensor
20

EVAP
Purge Solenoid
16
Exhaust Gas
Recirculation
Solenoid
16
Fuel
Pump Relay
.16

Heated
Oxygen
Sensor
. . . 17

Idle
Air
Control
Motor
.19

Ignition
Coil
.15
Injectors
.15

Intake
Air
Temp
Sensor
. .20

Map
Sensor
. .20
Powertrain
Control
Module .15,16,17,18,19,20

Throttle
Position
(Sensor)
.18

Vehicle
Speed
Sensor
.20

Ignition
Time
Delay Relay
49

Injectors
.15 Intermittent
Wiper
System .53,54
Control
Unit
.54 Intermittent
Windshield
Wiper
Motor
54

Windshield
Washer Pump
Motor
53

Wiper
Switch
53

Key-In
Switch
49

Key-In Warning Buzzer 77,78
Lamps
Air-Conditioning
and
Heater
Switch
Lamp
48

Ash
Receiver .48,52 Back-Up Lamps
......
79,80,81
Cargo Lamp
.
.49,50 Clearance Lamps-Dual Rear Wheels .41,42
Clearance Lamps Roof Mounted
.40

Cluster
Illumination
Lamps
.
.57,58,59
Dome Lamp
50,51

Four Wheel
Drive
Indicator
.13

Glove
Box
Lamp
52
Headlamp-Left
43,45 Headlamp-Right 44,46
Headlamp
Switch
Controlled
Interior
Lamps
. 48

Heater
Switch
Lamp
.48
High Beam
Indicator
Lamp
.59

Identification
Lamp
.
.40,41

Ignition
Switch
Lamp
.49
Instrument
Panel
Illumination
Lamps
.
.57,58,59
License Lamp
. . . 80
.
.48 Low
Engine
Oil
Pressure Lamp
59

45,46
Map
Lamp
49

.
.39
Parking
Lamp-Left
Front
43,45
66,67 Parking Lamp-Right
Front
44,46 .
.66
Rear
End
Lighting
System .79,80,81

Page 517 of 1502

DODGE TRUCK 1993 Service Repair Manual
8W
- 42
WIRING DIAGRAMS

-J_
ENGINE

=
GROUND

BODY
—
GROUND
BATTERY
-A
15
22WT-
^—
FUSIBLE LINK
(22WT)

(LEFT
FRONT WHEELHOUSE) FUSIBLE LINK

(18GY)

(LEFT
FRONT WHEELHOUSE

Page 564 of 1502

DODGE TRUCK 1993 Service Repair Manual
•

WIRING
DIAGRAMS
8W - 89

TO

TRANSMISSION
V

OVERDRIVE CONTROL SWITCH

(SEE
SH 12)
TO

TRANSMISSION
OVERDRIVE CONTROL SWITCH

(SEE
SH
12)GAS

(SEE
SH
M)DIESEL Zl
18BK

E2

wheel bolts lock service interval reset check transmission fluid tire size oil type