2003 DODGE RAM audio

snow chains dashboard warning lights tire pressure oil change change language sensor

Page 416 of 2895

DODGE RAM 2003 Service Repair Manual Turn on the headlamps for fifteen seconds, then
allow up to five minutes for the battery voltage to
stabilize.
(2) Disconnect and isolate both battery cables, neg-
ative cable first.
(3) Using a voltm

Turn on the headlamps for fifteen seconds, then
allow up to five minutes for the battery voltage to
stabilize.
(2) Disconnect and isolate both battery cables, neg-
ative cable first.
(3) Using a voltmeter connected to the battery
posts (see the instructions provided by the manufac-
turer of the voltmeter), measure the open-circuit volt-
age (Fig. 8).
See the Open-Circuit Voltage Table. This voltage
reading will indicate the battery state-of-charge, but
will not reveal its cranking capacity. If a battery has
an open-circuit voltage reading of 12.4 volts or
greater, it may be load tested to reveal its cranking
capacity (Refer to 8 - ELECTRICAL/BATTERY SYS-
TEM/BATTERY - STANDARD PROCEDURE).
OPEN CIRCUIT VOLTAGE TABLE
Open Circuit Voltage Charge Percentage
11.7 volts or less 0%
12.0 volts 25%
12.2 volts 50%
12.4 volts 75%
12.6 volts or more 100%
STANDARD PROCEDURE - IGNITION-OFF
DRAW TEST
The term Ignition-Off Draw (IOD) identifies a nor-
mal condition where power is being drained from the
battery with the ignition switch in the Off position. A
normal vehicle electrical system will draw from five
to thirty-five milliamperes (0.005 to 0.035 ampere)
with the ignition switch in the Off position, and all
non-ignition controlled circuits in proper working
order. Up to thirty-five milliamperes are needed to
enable the memory functions for the Powertrain Con-
trol Module (PCM), digital clock, electronically tuned
radio, and other modules which may vary with the
vehicle equipment.
A vehicle that has not been operated for approxi-
mately twenty days, may discharge the battery to an
inadequate level. When a vehicle will not be used for
twenty days or more (stored), remove the IOD fuse
from the Integrated Power Module (IPM). This will
reduce battery discharging.
Excessive IOD can be caused by:
²Electrical items left on.
²Faulty or improperly adjusted switches.
²Faulty or shorted electronic modules and compo-
nents.
²An internally shorted generator.
²Intermittent shorts in the wiring.
If the IOD is over thirty-five milliamperes, the
problem must be found and corrected before replac-
ing a battery. In most cases, the battery can be
charged and returned to service after the excessive
IOD condition has been corrected.
(1) Verify that all electrical accessories are off.
Turn off all lamps, remove the ignition key, and close
all doors. If the vehicle is equipped with an illumi-
nated entry system or an electronically tuned radio,
allow the electronic timer function of these systems
to automatically shut off (time out). This may take
up to three minutes. See the Electronic Module Igni-
tion-Off Draw Table for more information.
ELECTRONIC MODULE IGNITION-OFF DRAW (IOD) TABLE
ModuleTime Out?
(If Yes, Interval And Wake-Up Input)IODIOD After Time
Out
Radio No1to3
milliamperesN/A
Audio Power
AmplifierNoup to 1
milliampereN/A
Powertrain Control
Module (PCM)No 0.95 milliampere N/A
Fig. 8 Testing Open-Circuit Voltage - Typical
DRBATTERY SYSTEM 8F - 11
BATTERY (Continued)

Page 702 of 2895

DODGE RAM 2003 Service Repair Manual WIRING
TABLE OF CONTENTS
page page
WIRING DIAGRAM INFORMATION....... 8W-01-1
COMPONENT INDEX.................. 8W-02-1
POWER DISTRIBUTION............... 8W-10-1
GROUND DISTRIBUTION.............. 8W-15

Page 709 of 2895

DODGE RAM 2003 Service Repair Manual DESCRIPTION - CIRCUIT FUNCTIONS
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

DESCRIPTION - CIRCUIT FUNCTIONS
All circuits in the diagrams use an alpha/numeric
code to identify the wire and it's 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.
CIRCUIT IDENTIFICATION CODE CHART
CIRCUIT FUNCTION
A BATTERY FEED
B BRAKE CONTROLS
C CLIMATE CONTROLS
D DIAGNOSTIC CIRCUITS
E DIMMING ILLUMINATION
CIRCUITS
F FUSED CIRCUITS
G MONITORING CIRCUITS
(GAUGES)
H OPEN
I NOT USED
J OPEN
K POWERTRAIN CONTROL
MODULE
L EXTERIOR LIGHTING
M INTERIOR LIGHTING
N NOT USED
O NOT USED
P POWER OPTION (BATTERY
FEED)
Q POWER OPTIONS (IGNITION
FEED)
R PASSIVE RESTRAINT
S SUSPENSION/STEERING
T TRANSMISSION/TRANSAXLE/
TRANSFER CASE
U OPEN
V SPEED CONTROL, WIPER/
WASHER
W OPEN
X AUDIO SYSTEMS
Y OPEN
Z GROUNDS
DESCRIPTION - SECTION IDENTIFICATION AND
INFORMATION
The wiring diagrams are grouped into individual
sections. If a component is most likely found in a par-
ticular group, it will be shown complete (all wires,
connectors, and pins) within that group. For exam-
ple, the Auto Shutdown Relay is most likely to be
found in Group 30, so it is shown there complete. It
can, however, be shown partially in another group if
it contains some associated wiring.
Splice diagrams in Section 8W-70 show the entire
splice and provide references to other sections the
splices serves. Section 8W-70 only contains splice dia-
grams that are not shown in their entirety some-
where else in the wiring diagrams.
Section 8W-80 shows each connector and the cir-
cuits involved with that connector. The connectors
are identified using the name/number on the dia-
gram pages.
WIRING SECTION CHART
GROUP TOPIC
8W-01 thru
8W-09General information and Diagram
Overview
8W-10 thru
8W-19Main Sources of Power and
Vehicle Grounding
8W-20 thru
8W-29Starting and Charging
8W-30 thru
8W-39Powertrain/Drivetrain Systems
8W-40 thru
8W-49Body Electrical items and A/C
8W-50 thru
8W-59Exterior Lighting, Wipers and
Trailer Tow
8W-60 thru
8W-69Power Accessories
8W-70 Splice Information
8W-80 Connector Pin Outs
8W-91 Connector, Ground and Splice
Locations
8W - 01 - 6 8W-01 WIRING DIAGRAM INFORMATIONDR
WIRING DIAGRAM INFORMATION (Continued)

Page 720 of 2895

DODGE RAM 2003 Service Repair Manual 8W-02 COMPONENT INDEX
Component Page
4WD Switch......................... 8W-30
A/C Compressor Clutch Relay............ 8W-42
A/C Compressor Clutch................. 8W-42
A/C Pressure Transducer.......

8W-02 COMPONENT INDEX
Component Page
4WD Switch......................... 8W-30
A/C Compressor Clutch Relay............ 8W-42
A/C Compressor Clutch................. 8W-42
A/C Pressure Transducer................ 8W-42
A/C-Heater Control.................... 8W-42
Accelerator Pedal Position Sensor......... 8W-30
Adjustable Pedal Motor................. 8W-30
Adjustable Pedal Relay................. 8W-30
Adjustable Pedal Switch................ 8W-30
Airbag Control Modules................ 8W-43
Airbags............................. 8W-43
Ambient Temperature Sensor............ 8W-49
Amplifier Audio....................... 8W-47
Auto Shut Down Relay................. 8W-30
Automatic Day/Night Mirror............. 8W-49
Auxiliary Battery..................... 8W-20
Backup Lamp Switch.................. 8W-51
Battery Temperature Sensor............. 8W-30
Battery............................. 8W-20
Blend Door Actuator................... 8W-42
Blower Motor Resistor Block............. 8W-42
Blower Motor......................... 8W-42
Brake Lamp Switch.................... 8W-33
Brake Transmission Shift Interlock
Solenoid........................... 8W-40
Camshaft Position Sensor............... 8W-30
Capacitor............................ 8W-30
Center High Mounted Stop Lamp/Cargo
Lamp.......................... 8W-44, 51
Center High Mounted Stop Lamp-
Aftermarket..................... 8W-33, 51
Cigar Lighter Outlet................... 8W-41
Circuit Breaker....................... 8W-10
Clearance Lamps...................... 8W-50
Clockspring................. 8W-33, 41, 43, 47
Clutch Interlock Brake Switch........... 8W-21
Coil On Plugs........................ 8W-30
Compass/Mini-Trip Computer............ 8W-49
Condenser Fan Relay.................. 8W-42
Condenser Fan....................... 8W-42
Controller Antilock Brake............ 8W-34, 35
Crankshaft Position Sensor.............. 8W-30
Cylinder Lock Switch-Driver............. 8W-61
Cylinder Lock Switch-Passenger.......... 8W-61
Data Link Connector................... 8W-18
Data Link Connector-Engine............. 8W-18
Dome Lamp.......................... 8W-44
Door Ajar Switches.................... 8W-40
Door Lock Motor/Ajar Switches........ 8W-40, 61
Door Lock Switch-Passenger............. 8W-61
Driver Door Module.............. 8W-60, 61, 62
Electric Brake Provision............. 8W-33, 54Component Page
Electronic Throttle Control Module........ 8W-30
Engine Control Module................. 8W-30
Engine Coolant Temperature Sensor....... 8W-30
Engine Oil Pressure Switch.............. 8W-30
EVAP/Purge Solenoid.................. 8W-30
Evaporator Temperature Sensor.......... 8W-42
Fender Lamps........................ 8W-51
Fog Lamp Relay...................... 8W-50
Fog Lamps.......................... 8W-50
Front Control Module.................. 8W-10
Fuel Heater Relay..................... 8W-30
Fuel Heater.......................... 8W-30
Fuel Injectors........................ 8W-30
Fuel Injector Packs.................... 8W-30
Fuel Pump Module.................... 8W-30
Fuel Pump Motor..................... 8W-30
Fuel Pump Relay...................... 8W-30
Fuel Rail Pressure Sensor............... 8W-30
Fuses............................... 8W-10
Fusible Link......................... 8W-10
Grounds............................ 8W-15
Generator........................... 8W-20
Glove Box Lamp And Switch............. 8W-44
Headlamp Switch.................. 8W-40, 50
Headlamps.......................... 8W-50
Heated Mirror Relay................... 8W-62
Heated Seat Cushions.................. 8W-63
Heated Seat Switches.................. 8W-63
Horn Relay.......................... 8W-41
Horn Switch......................... 8W-41
Horns.............................. 8W-41
Idle Air Control Motor............ 8W-30, 30-36
Ignition Coils......................... 8W-30
Ignition Switch....................... 8W-10
Inlet Air Temperature/Pressure Sensor..... 8W-30
Input Speed Sensor.................... 8W-31
Instrument Cluster.................... 8W-40
Intake Air Heater Relays............... 8W-30
Intake Air Temperature Sensor........... 8W-30
Intake Air Temperature/Manifold Absolute
Pressure Sensor..................... 8W-30
Integrated Power Module............... 8W-10
Knock Sensors........................ 8W-30
Leak Detection Pump.................. 8W-30
License Lamps....................... 8W-51
Lift Pump Motor...................... 8W-30
Line Pressure Sensor................ 8W-30, 31
Lumbar Motors....................... 8W-63
Manifold Absolute Pressure Sensor........ 8W-30
Mode Door Actuators................... 8W-42
Multi-Function Switch............ 8W-40, 52, 53
Output Speed Sensor................... 8W-31
DR8W-02 COMPONENT INDEX 8W - 02 - 1

Page 722 of 2895

DODGE RAM 2003 Service Repair Manual 8W-10 POWER DISTRIBUTION
Component PageA/C Compressor Clutch....................8W-10-16, 43, 44
A/C Compressor Clutch Relay.................8W-10-16, 43, 44
A/C-Heater Control......................8W

8W-10 POWER DISTRIBUTION
Component PageA/C Compressor Clutch....................8W-10-16, 43, 44
A/C Compressor Clutch Relay.................8W-10-16, 43, 44
A/C-Heater Control......................8W-10-46, 47, 58
Adjustable Pedal Relay......................8W-10-14, 34
Adjustable Pedal Switch.................8W-10-14, 34, 46, 58
Airbag Control Module......................8W-10-46, 48
Airbag Control Module-Left Side Impact...............8W-10-46
Airbag Control Module-Right Side Impact..............8W-10-46
Ambient Temperature Sensor...................8W-10-52, 54
Amplifier Audio...........................8W-10-33
Auto Shut Down Relay......................8W-10-11, 18
Automatic Day/Night Mirror...................8W-10-45, 52
Auxiliary Battery...........................8W-10-11
Backup Lamp Switch.......................8W-10-48, 53
Battery..............................8W-10-11, 18
Blower Motor.............................8W-10-56
Brake Lamp Switch....................8W-10-13, 32, 43, 44
Capacitor.............................8W-10-21, 23
Center High Mounted Stop Lamp/Cargo Lamp............8W-10-42
Cigar Lighter Outlet.........................8W-10-50
Circuit Breaker............................8W-10-56
Clearance Lamp No. 1........................8W-10-37
Clearance Lamp No. 2........................8W-10-37
Clearance Lamp No. 3........................8W-10-37
Clearance Lamp No. 4........................8W-10-37
Clearance Lamp No. 5........................8W-10-37
Clutch Interlock Brake Switch....................8W-10-39
Coil On Plug No. 1........................8W-10-19, 22
Coil On Plug No. 2........................8W-10-20, 21
Coil On Plug No. 3........................8W-10-19, 22
Coil On Plug No. 4........................8W-10-20, 21
Coil On Plug No. 5........................8W-10-19, 22
Coil On Plug No. 6........................8W-10-20, 21
Coil On Plug No. 7........................8W-10-19, 22
Coil On Plug No. 8........................8W-10-20, 21
Compass/Mini-Trip Computer...................8W-10-42, 45
Condenser Fan..........................8W-10-17, 49
Condenser Fan Relay.......................8W-10-17, 49
Controller Antilock Brake...................8W-10-13, 30, 48
Data Link Connector.......................8W-10-32, 54
Dome Lamp.............................8W-10-42
Door Lock Switch-Passenger.....................8W-10-45
Driver Door Module.......................8W-10-42, 56
Electric Brake Provision.......................8W-10-18
Engine Control Module........................8W-10-43
EVAP/Purge Solenoid.........................8W-10-45
Fender Lamp-Front Left.......................8W-10-37
Fender Lamp-Front Right......................8W-10-37
Fender Lamp-Rear Left.......................8W-10-37
Fender Lamp-Rear Right.......................8W-10-37
Fog Lamp Relay.........................8W-10-15, 38
Fog Lamp-Left............................8W-10-38
Fog Lamp-Right...........................8W-10-38
Front Control Module....8W-10-12, 31, 32, 34, 35, 36, 48, 45, 51, 52, 54 , 55
Fuel Heater.............................8W-10-57
Fuel Heater Relay........................8W-10-17, 57
Fuel Injector No. 1........................8W-10-22, 24
Fuel Injector No. 2....................8W-10-20, 21, 23, 24
Fuel Injector No. 3........................8W-10-22, 24
Fuel Injector No. 4....................8W-10-20, 21, 23, 24
Fuel Injector No. 5........................8W-10-22, 24
Fuel Injector No. 6....................8W-10-20, 21, 23, 24
Fuel Injector No. 7........................8W-10-22, 24
Fuel Injector No. 8....................8W-10-20, 21, 23, 24
Fuel Injector No. 9..........................8W-10-24
Fuel Injector No. 10.........................8W-10-23
Fuel Pump Module........................8W-10-16, 42
Fuel Pump Relay.....................8W-10-16, 42, 43, 44
Fuse 1..............................8W-10-11, 18
Fuse 2............................8W-10-11, 12, 18
Fuse 3..............................8W-10-12, 26
Fuse 4..............................8W-10-12, 26
Fuse 5.......................8W-10-11, 12, 13, 27, 28, 29
Fuse 6............................8W-10-12, 13, 30
Fuse 7..............................8W-10-13, 30
Fuse 8..............................8W-10-14, 31
Fuse 9..............................8W-10-12, 26
Fuse 10..............................8W-10-12, 26
Fuse 11............................8W-10-12, 13, 32
Fuse 12............................8W-10-17, 49, 57
Fuse 13..............................8W-10-12, 32
Fuse 14..............................8W-10-14, 39
Fuse 15............................8W-10-15, 16, 36
Fuse 16............................8W-10-16, 43, 44
Fuse 17............................8W-10-16, 17, 42
Fuse 18..............................8W-10-13, 32
Fuse 19..............................8W-10-13, 33
Fuse 20..............................8W-10-12, 26
Fuse 21..............................8W-10-13, 33
Fuse 22..............................8W-10-13, 33
Fuse 24..............................8W-10-13, 32
Fuse 25..............................8W-10-13, 33
Fuse 27............................8W-10-16, 17, 47
Fuse 28............................8W-10-43, 44, 45
Fuse 32..............................8W-10-16, 36
Fuse 33..............................8W-10-16, 36Component PageFuse 34..............................8W-10-16, 36
Fuse 35...............................8W-10-48
Fuse 36..............................8W-10-47, 58
Fuse 37...............................8W-10-48
Fuse 38..............................8W-10-47, 48
Fuse 40............................8W-10-14, 15, 34
Fuse 41..............................8W-10-15, 38
Fuse 42..............................8W-10-13, 34
Fuse 43..............................8W-10-13, 34
Fuse 45............................8W-10-15, 16, 38
Fuse 46............................8W-10-14, 15, 35
Fuse 47..............................8W-10-15, 35
Fuse 48..............................8W-10-14, 34
Fuse 49..............................8W-10-11, 18
Fuse 50...............................8W-10-45
Fuse 51............................8W-10-13, 14, 32
Fuse 52..............................8W-10-47, 48
Fuse 53...............................8W-10-45
Fusible Link.............................8W-10-11
G103...............................8W-10-51, 52
G106...........................8W-10-31, 51, 55, 57
G107...............................8W-10-27, 29
G201.................................8W-10-26
Generator.............................8W-10-11, 28
Glove Box Lamp And Switch.....................8W-10-42
Headlamp Switch..........................8W-10-38
Headlamp-Left............................8W-10-55
Headlamp-Right...........................8W-10-55
Heated Mirror Relay.......................8W-10-17, 47
Horn Relay............................8W-10-15, 38
Horn-High Note...........................8W-10-38
Horn-Low Note............................8W-10-38
Ignition Coil.............................8W-10-24
Ignition Coil-Left...........................8W-10-23
Ignition Coil-Right..........................8W-10-23
Ignition Switch................8W-10-12, 26, 39, 45, 48, 50, 56
Instrument Cluster................8W-10-13, 26, 32, 33, 45, 50
Integrated Power Module . 8W-10-2, 3, 5, 11, 12, 13,, 14, 15, 16, 17, 18, 26, 27,
28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 42, 43, 44, 45, 46, 47, 48, 49, 50, 52,
54, 55, 57, 58
Leak Detection Pump........................8W-10-28
License Lamp-Left..........................8W-10-36
License Lamp-Right.........................8W-10-37
Overhead Map/Reading Lamp....................8W-10-42
Oxygen Sensor 1/1 Upstream.....................8W-10-25
Oxygen Sensor 1/2 Downstream...................8W-10-25
Oxygen Sensor 2/1 Upstream.....................8W-10-25
Oxygen Sensor 2/2 Downstream...................8W-10-25
Oxygen Sensor Downstream Relay................8W-10-11, 18
Park Lamp Relay.........................8W-10-16, 36
Park/Turn Signal Lamp-Left Front................8W-10-36, 51
Park/Turn Signal Lamp-Right Front...............8W-10-36, 51
Passenger Airbag On/Off Switch...................8W-10-46
Passenger Lumbar Switch......................8W-10-30
Power Mirror-Left..........................8W-10-47
Power Mirror-Right.........................8W-10-47
Power Outlet...........................8W-10-13, 33
Power Outlet-Console........................8W-10-34
Power Seat Switch-Driver......................8W-10-30
Power Seat Switch-Passenger....................8W-10-30
Power Window Circuit Breaker....................8W-10-56
Powertrain Control Module . 8W-10-17, 18, 19, 21, 23, 24, 28, 29, 33, 39, 40, 41,
42, 43, 44, 49, 57
PTCNo.1.........................8W-10-42, 43, 44, 45
PTCNo.2 ..............................8W-10-50
PTCNo.5 ..............................8W-10-35
Radio...............................8W-10-32, 50
Seat Belt Tensioner Reducer.....................8W-10-50
Seat Heater Interface Module....................8W-10-34
Sentry Key Immobilizer Module...............8W-10-33, 43, 44
Spare Relay.............................8W-10-58
Starter Motor...........................8W-10-14, 39
Starter Motor Relay.......................8W-10-14, 39
Tail/Stop/Turn Signal Lamp-Left.............8W-10-36, 51, 52, 54
Tail/Stop/Turn Signal Lamp-Right.............8W-10-37, 51, 52, 54
Tailgate Lamp Assembly.....................8W-10-36, 41
Trailer Tow Connector...................8W-10-15, 16, 35, 36
Trailer Tow Connector-Add On..............8W-10-18, 35, 36, 52
Trailer Tow Left Turn Relay...................8W-10-15, 35
Trailer Tow Right Turn Relay...................8W-10-15, 35
Transfer Case Control Module................8W-10-13, 34, 39
Transmission Control Module...............8W-10-12, 27, 41, 56
Transmission Control Relay................8W-10-12, 27, 28, 29
Transmission Range Sensor..................8W-10-40, 48, 53
Transmission Solenoid Assembly.................8W-10-12, 28
Transmission Solenoid/TRS Assembly.........8W-10-27, 29, 40, 48, 53
Underhood Lamp...........................8W-10-32
Vacuum Pump............................8W-10-43
Vistronic Fan Drive.........................8W-10-58
Washer Fluid Level Switch....................8W-10-52, 54
Washer Pump Motor-Front......................8W-10-52
Wiper High/Low Relay......................8W-10-14, 31
Wiper Motor-Front........................8W-10-31, 52
Wiper On/Off Relay........................8W-10-14, 31
DR8W-10 POWER DISTRIBUTION 8W - 10 - 1

Page 780 of 2895

DODGE RAM 2003 Service Repair Manual 8W-15 GROUND DISTRIBUTION
Component Page
A/C Compressor Clutch..................8W-15-9, 11
A/C-Heater Control....................8W-15-15, 17
Adjustable Pedal Switch...................8W-15-17
Airbag

8W-15 GROUND DISTRIBUTION
Component Page
A/C Compressor Clutch..................8W-15-9, 11
A/C-Heater Control....................8W-15-15, 17
Adjustable Pedal Switch...................8W-15-17
Airbag Control Module....................8W-15-18
Airbag Control Module-Left Side Impact.........8W-15-18
Airbag Control Module-Right Side Impact........8W-15-18
Amplifier Audio........................8W-15-14
Automatic Day/Night Mirror................8W-15-15
Auxiliary Battery........................8W-15-7
Battery..............................8W-15-7
Brake Lamp Switch......................8W-15-13
Brake Transmission Shift Interlock Solenoid.......8W-15-14
Center High Mounted Stop Lamp/Cargo Lamp.....8W-15-15
Cigar Lighter Outlet.....................8W-15-17
Clearance Lamp No. 1....................8W-15-16
Clearance Lamp No. 2....................8W-15-16
Clearance Lamp No. 3....................8W-15-16
Clearance Lamp No. 4....................8W-15-16
Clearance Lamp No. 5....................8W-15-16
Clockspring...........................8W-15-12
Clutch Interlock Brake Switch..............8W-15-2, 5
Compass/Mini-Trip Computer................8W-15-15
Condenser Fan........................8W-15-4, 6
Controller Antilock Brake...................8W-15-4
Cylinder Lock Switch-Driver................8W-15-19
Cylinder Lock Switch-Passenger..............8W-15-19
Data Link Connector.....................8W-15-13
Data Link Connector-Engine................8W-15-11
Door Ajar Switch-Driver...................8W-15-19
Door Ajar Switch-Left Rear.................8W-15-20
Door Ajar Switch-Passenger.................8W-15-19
Door Ajar Switch-Right Rear................8W-15-20
Door Lock Motor/Ajar Switch-Driver............8W-15-19
Door Lock Motor/Ajar Switch-Left Rear..........8W-15-20
Door Lock Motor/Ajar Switch-Passenger.........8W-15-19
Door Lock Motor/Ajar Switch-Right Rear.........8W-15-20
Door Lock Switch-Passenger.................8W-15-19
Driver Door Module......................8W-15-21
Electric Brake Provision..................8W-15-4, 6
Engine Control Module....................8W-15-11
Fender Lamp-Front Left....................8W-15-3
Fender Lamp-Front Right...................8W-15-3
Fender Lamp-Rear Left....................8W-15-3
Fender Lamp-Rear Right...................8W-15-3
Fog Lamp-Left........................8W-15-2, 5
Fog Lamp-Right.......................8W-15-2, 5
Fuel Heater...........................8W-15-11
Fuel Pump Module....................8W-15-3, 4, 6
G100................................8W-15-7
G101................................8W-15-7
G102................................8W-15-7
G103................................8W-15-2
G104..............................8W-15-5, 6
G105................................8W-15-7
G106................................8W-15-4
G107............................8W-15-8, 9, 10
G108................................8W-15-7
G109................................8W-15-7
G114 ...............................8W-15-11
G117 ...............................8W-15-11
Component Page
G120...............................8W-15-11
G201.............................8W-15-12, 13
G202.............................8W-15-14, 15
G203...............................8W-15-17
G204...............................8W-15-18
G301...............................8W-15-20
G302...............................8W-15-22
Generator..........................8W-15-10, 11
Headlamp Switch.......................8W-15-12
Headlamp-Left........................8W-15-2, 5
Headlamp-Right.........................8W-15-7
Heated Seat Cushion-Driver.................8W-15-22
Heated Seat Cushion-Passenger..............8W-15-22
Heated Seat Switch-Driver.................8W-15-13
Heated Seat Switch-Passenger...............8W-15-13
Horn-High Note.......................8W-15-4, 6
Horn-Low Note........................8W-15-4, 6
Ignition Switch.........................8W-15-12
Instrument Cluster....................8W-15-12, 14
Intake Air Heater Relay No. 1................8W-15-7
Intake Air Heater Relay No. 2................8W-15-7
Integrated Power Module..............8W-15-2, 4, 5, 8
Leak Detection Pump.....................8W-15-10
License Lamp-Left.......................8W-15-3
License Lamp-Right......................8W-15-3
Lift Pump Motor........................8W-15-11
Overdrive Switch.......................8W-15-13
Oxygen Sensor 1/1 Upstream................8W-15-10
Oxygen Sensor 1/2 Downstream.............8W-15-9, 10
Oxygen Sensor 2/1 Upstream................8W-15-10
Oxygen Sensor 2/2 Downstream.............8W-15-9, 10
Park/Turn Signal Lamp-Left Front............8W-15-2, 6
Park/Turn Signal Lamp-Right Front............8W-15-7
Power Mirror-Left.......................8W-15-21
Power Mirror-Right......................8W-15-22
Power Outlet..........................8W-15-17
Power Outlet-Console.....................8W-15-21
Power Seat Switch-Driver..................8W-15-21
Power Seat Switch-Passenger................8W-15-21
Power Steering Pressure Switch...............8W-15-9
Powertrain Control Module.............8W-15-8, 10, 11
Radio...............................8W-15-15
Red Brake Warning Indicator Switch..........8W-15-2, 6
Seat Belt Switch-Driver...................8W-15-20
Seat Heater Interface Module................8W-15-22
Sentry Key Immobilizer Module..............8W-15-12
Speed Control Servo.....................8W-15-2, 5
Tail/Stop/Turn Signal Lamp-Left...............8W-15-3
Tail/Stop/Turn Signal Lamp-Right..............8W-15-3
Tailgate Lamp Assembly....................8W-15-3
Trailer Tow Connector..................8W-15-3, 4, 6
Trailer Tow Connector-Add On.............8W-15-3, 4, 6
Transfer Case Control Module...............8W-15-17
Transfer Case Selector Switch................8W-15-13
Transmission Control Module.................8W-15-8
Underhood Lamp.......................8W-15-2, 6
Vacuum Pump..........................8W-15-7
Washer Pump Motor-Front.................8W-15-4, 7
Wiper Motor-Front....................8W-15-2, 4, 5
DR8W-15 GROUND DISTRIBUTION 8W - 15 - 1

Page 802 of 2895

DODGE RAM 2003 Service Repair Manual 8W-18 BUS COMMUNICATIONS
Component Page
A/C-Heater Control................... 8W-18-4
Airbag Control Module................ 8W-18-4
Airbag Control Module-Left
Side Impact.................... 8W-18-5,

Page 990 of 2895

DODGE RAM 2003 Service Repair Manual 8W-47 AUDIO SYSTEM
Component Page
Amplifier Audio................... 8W-47-4, 5
Clockspring........................ 8W-47-7
Data Link Connector............... 8W-47-2, 5
Fuse 21.......................

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