2003 DODGE RAM light

Component Page
C317............................. 8W-80-40
C319............................. 8W-80-40
C319............................. 8W-80-40
C322............................. 8W-80-40
C322............................. 8W-80-41
C323............................. 8W-80-41
C323............................. 8W-80-41
C327............................. 8W-80-42
C327............................. 8W-80-42
C328............................. 8W-80-42
C328............................. 8W-80-42
Camshaft Position Sensor (Diesel)...... 8W-80-42
Camshaft Position Sensor (Gas)........ 8W-80-42
Capacitor......................... 8W-80-43
Center High Mounted Stop Lamp/Cargo
Lamp.......................... 8W-80-43
Cigar Lighter Outlet................. 8W-80-43
Clearance Lamp No. 1 (Heavy Duty).... 8W-80-43
Clearance Lamp No. 2 (Heavy Duty).... 8W-80-43
Clearance Lamp No. 3 (Heavy Duty).... 8W-80-44
Clearance Lamp No. 4 (Heavy Duty).... 8W-80-44
Clearance Lamp No. 5 (Heavy Duty).... 8W-80-44
Clockspring C1..................... 8W-80-44
Clockspring C2..................... 8W-80-44
Clockspring C3..................... 8W-80-45
Clockspring C4..................... 8W-80-45
Clockspring C5 (Remote Radio)........ 8W-80-45
Clutch Interlock Brake Switch......... 8W-80-45
Coil On Plug No. 1 (3.7L/4.7L/5.7L)..... 8W-80-45
Coil On Plug No. 2 (3.7L/4.7L/5.7L)..... 8W-80-46
Coil On Plug No. 3 (3.7L/4.7L/5.7L)..... 8W-80-46
Coil On Plug No. 4 (3.7L/4.7L/5.7L)..... 8W-80-46
Coil On Plug No. 5 (3.7L/4.7L/5.7L)..... 8W-80-46
Coil On Plug No. 6 (3.7L/4.7L/5.7L)..... 8W-80-47
Coil On Plug No. 7 (4.7L/5.7L)......... 8W-80-47
Coil On Plug No. 8 (4.7L/5.7L)......... 8W-80-47
Compass/Mini-Trip Computer
(Except Base).................... 8W-80-47
Condenser Fan..................... 8W-80-48
Controller Antilock Brake C1.......... 8W-80-48
Controller Antilock Brake C2 (ABS)..... 8W-80-48
Crankshaft Position Sensor........... 8W-80-49
Cylinder Lock Switch-Driver (Premium) . . 8W-80-49
Cylinder Lock Switch-Passenger
(Premium)...................... 8W-80-49
Data Link Connector................ 8W-80-49
Data Link Connector................ 8W-80-50
Dome Lamp....................... 8W-80-50
Door Ajar Switch-Driver (Base)........ 8W-80-50
Door Ajar Switch-Left Rear (Base)...... 8W-80-50
Door Ajar Switch-Passenger (Base)...... 8W-80-50
Door Ajar Switch-Right Rear (Base)..... 8W-80-51
Door Lock Motor/Ajar Switch-Driver
(Except Base).................... 8W-80-51Component Page
Door Lock Motor/Ajar Switch-Left Rear
(Except Base).................... 8W-80-51
Door Lock Motor/Ajar Switch-Passenger
(Except Base).................... 8W-80-51
Door Lock Motor/Ajar Switch-Right Rear
(Except Base).................... 8W-80-52
Door Lock Switch-Passenger........... 8W-80-52
Door Window/Lock Switch............ 8W-80-52
Driver Blend Door Actuator
(Dual-Zone)...................... 8W-80-52
Driver Door Module C1.............. 8W-80-53
Driver Door Module C2.............. 8W-80-53
Driver Heated Seat Cushion........... 8W-80-53
Electric Brake Provision.............. 8W-80-53
Electronic Throttle Control Module
(5.7L).......................... 8W-80-54
Engine Control Module............... 8W-80-54
Engine Control Module............... 8W-80-55
Engine Coolant Temperature Sensor
(3.7L/4.7L/5.7L).................. 8W-80-56
Engine Coolant Temperature Sensor
(Diesel)......................... 8W-80-56
Engine Oil Pressure Switch........... 8W-80-57
Evap/Purge Solenoid (Except NGC)..... 8W-80-57
Evap/Purge Solenoid (NGC)........... 8W-80-57
Evaporator Temperature Sensor........ 8W-80-57
Fender Lamp-Front Left.............. 8W-80-58
Fender Lamp-Front Right............ 8W-80-58
Fender Lamp-Rear Left.............. 8W-80-58
Fender Lamp-Rear Right............. 8W-80-58
Fog Lamp-Left..................... 8W-80-58
Fog Lamp-Right.................... 8W-80-59
Fuel Control Actuator (Diesel)......... 8W-80-59
Fuel Heater (Diesel)................. 8W-80-59
Fuel Injector No. 1 (Diesel)............ 8W-80-59
Fuel Injector No. 1.................. 8W-80-59
Fuel Injector No. 2 (Diesel)............ 8W-80-60
Fuel Injector No. 2.................. 8W-80-60
Fuel Injector No. 3 (Diesel)............ 8W-80-60
Fuel Injector No. 3.................. 8W-80-60
Fuel Injector No. 4 (Diesel)............ 8W-80-60
Fuel Injector No. 4.................. 8W-80-61
Fuel Injector No. 5 (Diesel)............ 8W-80-61
Fuel Injector No. 5.................. 8W-80-61
Fuel Injector No. 6 (Diesel)............ 8W-80-61
Fuel Injector No. 6.................. 8W-80-61
Fuel Injector No. 7
(4.7L/5.7L/5.9L/8.0L)............... 8W-80-62
Fuel Injector No. 8
(4.7L/5.7L/5.9L/8.0L)............... 8W-80-62
Fuel Injector No. 9 (8.0L)............. 8W-80-62
Fuel Injector No. 10 (8.0L)............ 8W-80-62
Fuel Pump Module.................. 8W-80-63
Fuel Pump Motor (Diesel)............ 8W-80-63
Generator......................... 8W-80-63
8W - 80 - 2 8W-80 CONNECTOR PIN-OUTSDR

CAPACITOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
2- -
CENTER HIGH MOUNTED STOP LAMP/CARGO LAMP-4WAY
CAV CIRCUIT FUNCTION
1 F32 18RD/YL FUSED B(+)
2 M3 20PK/DB CARGO LAMP DRIVER
3 Z56 18BK GROUND
4 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
CIGAR LIGHTER OUTLET - RED 3 WAY
CAV CIRCUIT FUNCTION
1 F30 18RD FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
2- -
3 Z301 18TN/BK GROUND
CLEARANCE LAMP NO. 1 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L7 20BK/YL HEADLAMP SWITCH OUTPUT
2 Z253 20BK/RD GROUND
CLEARANCE LAMP NO. 2 (HEAVY DUTY)-2WAY
CAV CIRCUIT FUNCTION
1 L7 20BK/YL HEADLAMP SWITCH OUTPUT
2 Z253 20BK/RD GROUND
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 43

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
C317 BK At Passenger Seat N/S
C319 BK Bottom Left of Left Door N/S
C322 DK GY Left Rear of Frame N/S
C323 BK Left Side of Instrument Panel N/S
C327 BK Right Rear Fender 48, 49
C328 BK Left Rear Fender 48, 49, 50
Camshaft Position Sensor GY Right Front Side of Engine 3, 6, 8, 9
Capacitor Left Rear of Engine Compartment N/S
Center High Mounted Stop
Lamp/Cargo LampBK Rear of Cab 47
Cigar Lighter Outlet NAT Rear of Cigar Lighter 34, 37, 38
Clearance Lamp No. 1 BK Left Roof 46
Clearance Lamp No. 2 BK Left-Center Roof 46
Clearance Lamp No. 3 BK Center Roof 46
Clearance Lamp No. 4 BK Right-Center Roof 46
Clearance Lamp No. 5 BK Right Roof 46
Clockspring C1 BK Steering Column 33
Clockspring C2 YL Steering Column 33
Clockspring C3 BK Steering Column N/S
Clockspring C4 BK Steering Column N/S
Clutch Interlock Brake Switch BK At Clutch Pedal 26, 27
Coil On Plug No.1 BK Left Top Side of Intake Manifold 4
Coil On Plug No.2 BK Right Top Side of Intake Manifold 3
Coil On Plug No.3 BK Left Top Side of Intake Manifold 4
Coil On Plug No.4 BK Right Top Side of Intake Manifold 3
Coil On Plug No.5 BK Left Top Side of Intake Manifold 4
Coil On Plug No.6 BK Right Top Side of Intake Manifold 3
Coil On Plug No.7 BK Left Top Side of Intake Manifold 4
Coil On Plug No.8 BK Right Top Side of Intake Manifold 3
Compass/Mini-Trip Computer BK In Overhead Console N/S
Condenser Fan BK Near Condenser 26, 27
Controller Anti-Lock Brake C1 BK Left Fender Side Shield 26, 27, 28
Controller Anti-Lock Brake C2
(ABS)BK Left Fender Side Shield 26, 28
Crankshaft Position Sensor BK Right Rear of Engine Block 3, 6, 8, 9
Cylinder Lock Switch-Driver
(Premium)BK In Left Front Door 42
Cylinder Lock Switch-Passenger
(Premium)LT GY In Right Front Door N/S
Data Link Connector BK Left Bottom of Instrument Panel 37, 39
Data Link Connector - Engine
(Diesel)BK Near T/O for Water In Fuel Sensor N/S
Dome Lamp BK Center of Headliner N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 3
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

Fig. 1 RIGHT SIDE FRONT LIGHTING
Fig. 2 LEFT FRONT BUMPER AND RIGHT BATTERY TRAY
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 13
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

Fig. 19 45RFE TRANSMISSION (5.7L) (LIGHT DUTY)
8W - 91 - 30 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONDR
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

8W-97 POWER DISTRIBUTION
TABLE OF CONTENTS
page page
POWER DISTRIBUTION
DESCRIPTION..........................1
OPERATION............................1
SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS.........2
CIGAR LIGHTER OUTLET
DESCRIPTION..........................2
OPERATION............................2
DIAGNOSIS AND TESTING - CIGAR LIGHTER
OUTLET.............................2
INTEGRATED POWER MODULE
DESCRIPTION..........................3
OPERATION............................3
REMOVAL.............................3
INSTALLATION..........................4
FRONT CONTROL MODULE
DESCRIPTION..........................4
OPERATION............................5
DIAGNOSIS AND TESTING - FRONT
CONTROL MODULE....................5
REMOVAL.............................5
INSTALLATION..........................5
IOD FUSE
DESCRIPTION..........................6OPERATION............................6
REMOVAL.............................6
INSTALLATION..........................7
POWER OUTLET
DESCRIPTION..........................7
OPERATION............................7
DIAGNOSIS AND TESTING - POWER OUTLET . 7
REMOVAL.............................7
INSTALLATION..........................7
RELAY
DESCRIPTION..........................8
OPERATION............................8
DIAGNOSIS AND TESTING - RELAY.........8
REMOVAL.............................9
INSTALLATION..........................9
MICRO RELAY
DESCRIPTION..........................9
OPERATION............................9
DIAGNOSIS AND TESTING - MICRO-RELAY . . . 9
REMOVAL.............................10
INSTALLATION.........................10
POWER DISTRIBUTION
DESCRIPTION
This group covers the various standard and
optional power distribution components used on this
model. The power distribution system for this vehicle
consists of the following components:
²Integrated Power Module (IPM)
²Front Control Module (FCM)
²Power Distribution Center (PDC)
²Power Outlets
²Cigar Lighter Outlets
²Relays
Refer to Wiring Diagrams for complete circuit sche-
matics.
The power distribution system also incorporates
various types of circuit control and protection fea-
tures, including:
²Automatic resetting circuit breakers
²Blade-type fuses
²Cartridge fuses
²RelaysFollowing are general descriptions of the major
components in the power distribution system. See the
owner's manual in the vehicle glove box for more
information on the features and use of all of the
power distribution system components.
OPERATION
The power distribution system for this vehicle is
designed to provide safe, reliable, and centralized dis-
tribution points for the electrical current required to
operate all of the many standard and optional facto-
ry-installed electrical and electronic powertrain,
chassis, safety, security, comfort and convenience sys-
tems. At the same time, the power distribution sys-
tem was designed to provide ready access to these
electrical distribution points for the vehicle techni-
cian to use when conducting diagnosis and repair of
faulty circuits. The power distribution system can
also prove useful for the sourcing of additional elec-
trical circuits that may be required to provide the
electrical current needed to operate many accessories
that the vehicle owner may choose to have installed
in the aftermarket.
DR8W-97 POWER DISTRIBUTION 8W - 97 - 1

SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS
CIGAR LIGHTER OUTLET
DESCRIPTION
On models equipped a cigar lighter outlet is
installed to the left of the center stack area in the
lower instrument panel. The cigar lighter outlet is
secured by a snap fit within the bezel.
The cigar lighter outlet, plastic cap and the knob
and heating element unit are available for service
replacement. These components cannot be repaired
and, if faulty or damaged, they must be replaced.
OPERATION
The cigar lighter consists of two major components:
a knob and heating element unit, and the cigar
lighter base or outlet shell. The receptacle shell is
connected to ground, and an insulated contact in the
bottom of the shell is connected to battery current.
The cigar lighter receives battery voltage from a fuse
in the junction block when the ignition switch is in
the Accessory or Run positions.
The cigar lighter knob and heating element are
encased within a spring-loaded housing, which also
features a sliding protective heat shield. When the
knob and heating element are inserted in the outlet
shell, the heating element resistor coil is grounded
through its housing to the outlet shell. If the cigar
lighter knob is pushed inward, the heat shield slides
up toward the knob exposing the heating element,
and the heating element extends from the housing
toward the insulated contact in the bottom of the
outlet shell.
Two small spring-clip retainers are located on
either side of the insulated contact inside the bottom
of the outlet shell. These clips engage and hold the
heating element against the insulated contact longenough for the resistor coil to heat up. When the
heating element is engaged with the contact, battery
current can flow through the resistor coil to ground,
causing the resistor coil to heat.
When the resistor coil becomes sufficiently heated,
excess heat radiates from the heating element caus-
ing the spring-clips to expand. Once the spring-clips
expand far enough to release the heating element,
the spring-loaded housing forces the knob and heat-
ing element to pop back outward to their relaxed
position. When the cigar lighter knob and element
are pulled out of the outlet shell, the protective heat
shield slides downward on the housing so that the
heating element is recessed and shielded around its
circumference for safety.
DIAGNOSIS AND TESTING - CIGAR LIGHTER
OUTLET
For complete circuit diagrams, refer toWiring
Diagrams.
(1) Check the fused B(+) fuse in the integrated
power module. If OK, go to Step 2. If not OK, repair
the shorted circuit or component as required and
replace the faulty fuse.
(2) Turn the ignition switch to the Run position.
Check for battery voltage at the fused B(+) fuse in
the integrated power module. If OK, go to Step 3. If
not OK, repair the open or short as required.
(3) Remove the cigar lighter knob and element
from the cigar lighter outlet shell. Check for continu-
ity between the inside circumference of the cigar
lighter outlet shell and a good ground. there should
be continuity. If OK, go to Step 4. If not OK, go to
Step 5.
(4) Turn the ignition switch to the Run position.
Check for battery voltage at the insulated contact
located at the back of the cigar lighter outlet shell. If
OK, replace the faulty cigar lighter knob and ele-
ment. If not OK, go to Step 5.
(5) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Check for continuity between the ground circuit cav-
ity of the cigar lighter wire harness connector and a
good ground. There should be continuity. If OK, go to
Step 6. If not OK, repair the open ground circuit to
ground as required.
(6) Connect the battery negative cable. Turn the
ignition switch to the Accessory or Run positions.
Check for battery voltage at the fused B(+) circuit
cavity of the cigar lighter wire harness connector. If
OK, replace the faulty cigar lighter outlet. If not OK,
repair the open fused B(+) circuit to the integrated
power module fuse as required.Terminal Pick Kit 6680
8W - 97 - 2 8W-97 POWER DISTRIBUTIONDR
POWER DISTRIBUTION (Continued)

INSTALLATION
(1) Turn the ignition switch to the Off position.
(2) Remove the Integrated Power Module cover.
(3) To install the IOD fuse, use a thumb to press
the IOD fuse holder unit in fuse cavity # 51 firmly
into the Integrated Power Module.
(4) Install the Integrated Power Module cover.
POWER OUTLET
DESCRIPTION
Two power outlets are utilized on this model. One
in the instrument panel center lower bezel and the
other in the center console. The power outlet bases
are secured by a snap fit within the instrument
panel or trim panel. A plastic protective cap snaps
into the power outlet base when the power outlet is
not being used, and hangs from the power outlet base
mount by an integral bail strap while the power out-
let is in use.
The power outlet receptacle unit and the accessory
power outlet protective cap are available for service.
The power outlet receptacle cannot be repaired and,
if faulty or damaged, it must be replaced.
OPERATION
The power outlet base or receptacle shell is con-
nected to ground, and an insulated contact in the
bottom of the shell is connected to battery current.
The power outlet receives battery voltage from a fuse
in the integrated power module at all times.
While the power outlet is very similar to a cigar
lighter base unit, it does not include the two small
spring-clip retainers inside the bottom of the recepta-
cle shell that are used to secure the cigar lighter
heating element to the insulated contact.
DIAGNOSIS AND TESTING - POWER OUTLET
For complete circuit diagrams, refer toWiring
Diagrams.
(1) Check the fused B(+) fuse in the integrated
power module. If OK, go to Step 2. If not OK, repair
the shorted circuit or component as required and
replace the faulty fuse.
(2) Check for battery voltage at the fused B(+) fuse
in the integrated power module. If OK, go to Step 3.
If not OK, repair the open fused B(+) circuit to the
battery as required.
(3) Remove the plastic protective cap from the
power outlet receptacle. Check for continuity between
the inside circumference of the power outlet recepta-
cle and a good ground. There should be continuity. If
OK, go to Step 4. If not OK, go to Step 5.(4) Check for battery voltage at the insulated con-
tact located at the back of the power outlet recepta-
cle. If not OK, go to Step 5.
(5) Disconnect and isolate the battery negative
cable. Remove the power outlet receptacle from the
instrument panel. Disconnect the wire harness con-
nector from the power outlet receptacle. Check for
continuity between the ground circuit cavity of the
power outlet wire harness connector and a good
ground. There should be continuity. If OK, go to Step
6. If not OK, repair the open ground circuit to ground
as required.
(6) Connect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
power outlet wire harness connector. If OK, replace
the faulty power outlet receptacle. If not OK, repair
the open fused B(+) circuit to the integrated power
module fuse as required.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Pull the cigar lighter knob and element out of
the cigar lighter receptacle base, or unsnap the pro-
tective cap from the power outlet receptacle base.
(3) Look inside the cigar lighter or power outlet
receptacle base and note the position of the rectangu-
lar retaining bosses of the mount that secures the
receptacle base to the panel (Fig. 7).
(4) Insert a pair of external snap ring pliers into
the cigar lighter or power outlet receptacle base and
engage the tips of the pliers with the retaining
bosses of the mount.
(5) Squeeze the pliers to disengage the mount
retaining bosses from the receptacle base and, using
a gentle rocking motion, pull the pliers and the
receptacle base out of the mount.
(6) Pull the receptacle base away from the instru-
ment panel far enough to access the instrument
panel wire harness connector.
(7) Disconnect the instrument panel wire harness
connector from the cigar lighter or power outlet
receptacle base connector receptacle.
(8) Remove the cigar lighter or power outlet mount
from the instrument panel.
INSTALLATION
(1) Reconnect the instrument panel wire harness
connector to the cigar lighter or power outlet recep-
tacle base connector receptacle.
(2) Install the cigar lighter or power outlet mount
into the instrument panel.
(3) Align the splines on the outside of the cigar
lighter or power outlet receptacle base connector
receptacle with the grooves on the inside of the
mount.
DR8W-97 POWER DISTRIBUTION 8W - 97 - 7
IOD FUSE (Continued)