2003 DODGE RAM dash

weight brake light lug pattern bulb CD changer ignition

Page 700 of 2895

DODGE RAM 2003 Service Repair Manual WIPER ON/OFF RELAY
DESCRIPTION
The wiper on/off relay is located in the Integrated
Power Module (IPM) in the engine compartment near
the battery. The wiper on/off relay is a conventional
International

WIPER ON/OFF RELAY
DESCRIPTION
The wiper on/off relay is located in the Integrated
Power Module (IPM) in the engine compartment near
the battery. The wiper on/off relay is a conventional
International Standards Organization (ISO) micro
relay (Fig. 27). Relays conforming to the ISO specifi-
cations have common physical dimensions, current
capacities, terminal patterns, and terminal functions.
The relay is contained within a small, rectangular,
molded plastic housing and is connected to all of the
required inputs and outputs by five integral male
spade-type terminals that extend from the bottom of
the relay base.
The wiper on/off relay cannot be adjusted or
repaired and, if faulty or damaged, the unit must be
replaced.
OPERATION
The wiper on/off relay is an electromechanical
switch that uses a low current input from the Front
Control Module (FCM) to control a high current out-
put to the wiper motor. The movable common feed
contact point is held against the fixed normally
closed contact point by spring pressure. When the
relay coil is energized, an electromagnetic field is
produced by the coil windings. This electromagnetic
field draws the movable relay contact point away
from the fixed normally closed contact point, and
holds it against the fixed normally open contact
point. When the relay coil is de-energized, spring
pressure returns the movable contact point back
against the fixed normally closed contact point. A
resistor is connected in parallel with the relay coil in
the relay, and helps to dissipate voltage spikes and
electromagnetic interference that can be generated as
the electromagnetic field of the relay coil collapses.The wiper on/off relay terminals are connected to
the vehicle electrical system through a connector
receptacle in the Integrated Power Module (IPM).
The inputs and outputs of the wiper on/off relay
include:
²Common Feed Terminal- The common feed
terminal (30) is connected to the common feed termi-
nal of the wiper high/low relay at all times through
the wiper on/off relay output circuit.
²Coil Ground Terminal- The coil ground termi-
nal (85) is connected to a control output of the Front
Control Module (FCM) through a wiper on/off relay
control circuit. The FCM controls wiper motor opera-
tion by controlling a ground path through this cir-
cuit.
²Coil Battery Terminal- The coil battery ter-
minal (86) receives battery current at all times from
a fuse in the IPM through a fused ignition switch
output (run-acc) circuit.
²Normally Open Terminal- The normally open
terminal (87) receives battery current at all times
from a fuse in the IPM through a fused ignition
switch output (run-acc) circuit, and provides battery
current to the wiper on/off relay output circuit when-
ever the relay is energized.
²Normally Closed Terminal- The normally
closed terminal (87A) is connected to ground at all
times through a take out of the left headlamp and
dash wire harness with an eyelet terminal connector
that is secured by a screw to the front end sheet
metal, and is connected to the wiper on/off relay out-
put circuit whenever the relay is de-energized.
The wiper on/off relay may be diagnosed using con-
ventional diagnostic tools and methods. However,
conventional diagnostic methods may not prove con-
clusive in the diagnosis of the instrument cluster, the
Front Control Module (FCM), or the electronic mes-
sage inputs to or outputs from the instrument cluster
and the FCM that control the operation of the wiper
on/off relay. The most reliable, efficient, and accurate
means to diagnose the wiper on/off relay, the instru-
ment cluster, the FCM, or the electronic message
inputs and outputs related to the wiper on/off relay
operation requires the use of a DRBIIItscan tool.
Refer to the appropriate diagnostic information.
Fig. 27 ISO Micro Relay
30 - COMMON FEED
85 - COIL GROUND
86 - COIL BATTERY
87 - NORMALLY OPEN
87A - NORMALLY CLOSED
DRWIPERS/WASHERS 8R - 25

Page 704 of 2895

DODGE RAM 2003 Service Repair Manual 8W-01 WIRING DIAGRAM INFORMATION
TABLE OF CONTENTS
page page
WIRING DIAGRAM INFORMATION
DESCRIPTION
DESCRIPTION - HOW TO USE WIRING
DIAGRAMS...........................1
DESCRIPTION - CIRCUIT INFORMATI

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).
DR8W-01 WIRING DIAGRAM INFORMATION 8W - 01 - 1

Page 1079 of 2895

DODGE RAM 2003 Service Repair Manual BRAKE FLUID LEVEL SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G9 20GY/BK BRAKE FLUID LEVEL SWITCH SENSE
2 Z231 20BK/DG GROUND
BRAKE LAMP SWITCH - BLACK 6 WAY
CAV CIRCUIT FUNCTION
1 A108 18TN/RD FUSED

Page 1080 of 2895

DODGE RAM 2003 Service Repair Manual C100 (DIESEL) - (ENGINE TO DASH)
CAV CIRCUIT
1 K152 18WT
2 B6 20WT/DB
3 B7 20WT
4 Z11 18BK/WT
5-
6 Y1 18LG
7 K4 18BK/LB
8 Y169 18WT/TN
9 Y168 18WT/LB
10 Y3 18WT
11 L60 18LG/TN
12 L7 18BK/YL
13 F15 20D

Page 1085 of 2895

DODGE RAM 2003 Service Repair Manual C116 (DIESEL) - (INJECTOR SIDE)
CAV CIRCUIT
1 K92 14TN/PK
2 K14 14RD/WT
3 K91 14TN/RD
4 K13 14TN
C117 (DIESEL)
CAV CIRCUIT
1 K92 14TN/PK
2 K58 14BR/DB
3 K92 14TN/PK
4 K38 14GY
C117 (DIESEL) - (INJECTO

Page 1086 of 2895

DODGE RAM 2003 Service Repair Manual C130 - BLACK (DASH TO ENGINE)
CAV CIRCUIT
E2 Y112 20YL/BR (ETC)
E3 Y113 20 YL/OR (ETC)
E4 Y114 20YL/VT (ETC)
E5 Y117 20YL/DB (ETC)
E6 Y145 20DB/YL (EXCEPT DIESEL)
E7 B222 20DG/WT (EXCEPT ABS)
F1 T24 2

Page 1087 of 2895

DODGE RAM 2003 Service Repair Manual C130 - BLACK (ENGINE TO DASH)
CAV CIRCUIT
A1 A41 16YL (4.7L/5.7L/3.7L A/T)
A1 A41 14YL (3.7L M/T)
A2 A93 14RD/BK (DIESEL)
A3 K108 18WT/TN (4.7L/5.7L)
A4 -
A5 -
A6 -
B1 V35 18LG/RD (EXCEPT 5.7L)
B2 V32

Page 1088 of 2895

DODGE RAM 2003 Service Repair Manual C130 - BLACK (ENGINE TO DASH)
CAV CIRCUIT
F6 -
F7 -
G1 -
G7 -
H1 Y215 20YL/PK (5.7L)
H2 -
H3 -
H4 -
H6 -
H7 K81 18DB/DG (5.7L)
J1 Y115 20YL/WT (ETC)
J2 B22 20DG/YL (5.7L)
J2 G7 18WT/OR (EXCEPT 5.7L)
J

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