2002 DODGE RAM ignition

POWER MIRROR SWITCH-8WAY
CAV CIRCUIT FUNCTION
1 P71 22YL LEFT MIRROR UP DRIVER
2 P75 22DB/WT LEFT MIRROR LEFT DRIVER
3 P73 22YL/PK LEFT MIRROR COMMON DRIVER (RIGHT/DOWN)
4 P72 22YL/BK RIGHT MIRROR UP DRIVER
5 P74 22DB RIGHT MIRROR LEFT DRIVER
6 P70 22WT RIGHT MIRROR COMMON DRIVER (RIGHT/DOWN)
7 M1 22PK FUSED B(+)
8 Z2 20BK/LG GROUND
POWER OUTLET-3WAY
CAV CIRCUIT FUNCTION
1 A12 16RD/TN OUTLET FEED
2- -
3 Z3 16BK/OR GROUND
POWERTRAIN CONTROL MODULE C1 (DIESEL) - BLACK 32 WAY
CAV CIRCUIT FUNCTION
1- -
2 F18 18LG/BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
3- -
4 K4 18BK/LB SENSOR GROUND
5- -
6 T41 18BK/WT (A/T) PARK/NEUTRAL POSITION SWITCH SENSE
7- -
8 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
9- -
10 - -
11 - -
12 - -
13 - -
14 - -
15 - -
16 - -
17 - -
18 - -
19 - -
20 - -
21 - -
22 A14 14RD/WT FUSED B(+)
23 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
24 - -
25 - -
26 - -
27 - -
28 - -
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 69

POWERTRAIN CONTROL MODULE C1 (DIESEL) - BLACK 32 WAY
CAV CIRCUIT FUNCTION
29 - -
30 - -
31 Z12 14BK/TN GROUND
32 Z12 14BK/TN GROUND
POWERTRAIN CONTROL MODULE C1 (GAS)- BLACK 32 WAY
CAV CIRCUIT FUNCTION
1 K32 18YL/GY(8.0L) IGNITION COIL NO. 4 DRIVER
2 F18 18LG/BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
3 K18 18RD/BK(8.0L) IGNITION COIL NO. 3 DRIVER
4 K4 18BK/LB SENSOR GROUND
5 K43 18DG/GY(8.0L) IGNITION COIL NO. 5 DRIVER
6 T41 18BK/WT (A/T) PARK/NEUTRAL POSITION SWITCH SENSE
7 K19 18BK/GY IGNITION COIL NO.1
7 K19 18BK/GY(5.9L) IGNITION COIL NO. 1 DRIVER
8 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
9 K17 18DB/WT(8.0L) IGNITION COIL NO. 2 DRIVER
10 K60 18YL/BK IDLE AIR CONTROL NO. 2 DRIVER
11 K40 18BR/WT IDLE AIR CONTROL NO. 3 DRIVER
12 - -
13 G113 18OR PTO SWITCH SENSE
14 - -
15 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
16 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
17 K6 18VT/WT 5V SUPPLY
18 K44 18TN/YL CAMSHAFT POSITION SENSOR SIGNAL
19 K39 18GY/RD IDLE AIR CONTROL NO. 1 DRIVER
20 K59 18VT/BK IDLE AIR CONTROL NO. 4 DRIVER
21 - -
22 A14 16RD/WT FUSED B(+)
23 K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL
24 K41 18BK/DG(5.9L/8.0L) OXYGEN SENSOR 1/1 SIGNAL
24 K141 18TN/WT(CALIFORNIA) OXYGEN SENSOR 1/1 SIGNAL
25 K341 18OR/BK(5.9L)(CALIFORNIA) OXYGEN SENSOR 1/2 SIGNAL
25 K341 18OR/BK(A/T)(CALIFORNIA) OXYGEN SENSOR 1/3 SIGNAL
26 K241 18LG/RD(CALIFORNIA) OXYGEN SENSOR 2/1 SIGNAL
26 K241 18LG/RD(8.0L/5.9L) OXYGEN SENSOR 2/1 SIGNAL
27 K1 18DG/RD MAP SENSOR SIGNAL
28 - -
29 K141 18TN/WT(8.0L)(A/T)(CALIFORNIA) OXYGEN SENSOR 1/2 SIGNAL
29 K441 18OR/TN(5.9L)(CALIFORNIA) OXYGEN SENSOR 2/2 SIGNAL
30 - -
31 Z12 14BK/TN GROUND
32 Z12 14BK/TN GROUND
A24 K141 18TN/WT(5.9L) OXYGEN SENSOR 1/1 SIGNAL
B24 K141 18TN/WT(5.9L) OXYGEN SENSOR 1/1 SIGNAL
8W - 80 - 70 8W-80 CONNECTOR PIN-OUTSBR/BE

RADIO C1 - GRAY 7 WAY
CAV CIRCUIT FUNCTION
1- -
2 X55 18BR/RD LEFT FRONT DOOR SPEAKER (-)
3 X56 18DB/RD RIGHT FRONT DOOR SPEAKER (-)
4 E17 18YL/BK DAY BRIGHTNESS SENSE
5 E2 22OR PANEL LAMPS FEED
6 X12 16RD/WT FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
7 M1 22PK FUSED B(+)
RADIO C2 - BLACK 7 WAY
CAV CIRCUIT FUNCTION
1 X16 22LG ANTENNA RELAY OUTPUT
2 X51 18BR/YL LEFT REAR SPEAKER (+)
3 X52 18DB/WT RIGHT REAR SPEAKER (+)
4 X53 18DG LEFT FRONT DOOR SPEAKER (+)
5 X54 18VT RIGHT FRONT DOOR SPEAKER (+)
6 X57 18BR/LB LEFT REAR SPEAKER (-)
7 X58 18DB/OR RIGHT REAR SPEAKER (-)
RADIO C3-2WAY
CAV CIRCUIT FUNCTION
1 D1 20VT/BR CCD BUS (+)
2 D2 20WT/BK CCD BUS (-)
RADIO CHOKE RELAY - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 X60 16DG/RD FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
2 X13 16BK/RD RADIO CHOKE RELAY OUTPUT
3 X16 22LG ANTENNA RELAY OUTPUT
4 Z9 16BK/VT GROUND
REAR WHEEL SPEED SENSOR (ABS)-2WAY
CAV CIRCUIT FUNCTION
1 B114 20WT/VT REAR WHEEL SPEED SENSOR (-)
2 B113 20RD/VT REAR WHEEL SPEED SENSOR (+)
8W - 80 - 74 8W-80 CONNECTOR PIN-OUTSBR/BE

UNDERHOOD LAMP - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z1 20BK GROUND
2 M1 20PK FUSED B(+)
WASHER FLUID LEVEL SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G29 18BK/WT WASHER FLUID SWITCH SENSE
2 Z1 18BK GROUND
WATER IN FUEL SENSOR (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
A K104 18BK/LB SENSOR GROUND
B K1 18DG/RD WATER IN FUEL SENSOR SIGNAL
WIPER MOTOR-4WAY
CAV CIRCUIT FUNCTION
1 V4 16RD/YL WIPER SWITCH HIGH SPEED OUTPUT
2 V5 16DG WIPER PARK SWITCH SENSE
3 V6 16DB FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
4 V3 16BR/WT LOW SPEED WIPER SWITCH OUTPUT
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 81

CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
Engine Oil Pressure Sensor
(V8)BK Near Distributor 5
Engine Oil Pressure Sensor
(V10)Near Oil Filter 8
Engine Oil Pressure Sensor
(Diesel)Left Side of Engine 15
Fuel Heater (Diesel) Left Side of Engine 13
Fuel Injection Pump (Diesel) Left Side of Engine, Below ECM 13
Fuel Injector No.1 BK At Fuel Injector 7
Fuel Injector No. 2 BK At Fuel Injector 7, 8
Fuel Injector No. 3 BK At Fuel Injector 7, 8
Fuel Injector No. 4 BK At Fuel Injector 7, 8
Fuel Injector No. 5 BK At Fuel Injector 7, 8
Fuel Injector No. 6 BK At Fuel Injector 7, 8
Fuel Injector No. 7 BK At Fuel Injector 7, 8
Fuel Injector No. 8 BK At Fuel Injector 7, 8
Fuel Injector No. 9 BK At Fuel Injector 8
Fuel Injector No. 10 BK At Fuel Injector 8
Fuel Pump Module (Gas) LTGY At Frame Rail 29
Fuel Tank Module (Diesel) LTGY At Frame Rail N/S
Fuel Transfer Pump (Diesel) Left Rear of Engine Bottom of Pump 13
Generator BK Front of Engine 10, 11
Glove Box Lamp At Glove Box 30
Headlamp Switch C1 BK Left Side of Instrument Panel 30, 34
Headlamp Switch C2 Left Side of Instrument Panel 30, 34
Heated Mirror Switch Center of Instrument Panel 33
High Note Horn BK Front Bumper Right Support 22
Idle Air Control Motor BK On Throttle Body 12
Ignition Coil (5.9L) GY Right Front of Engine 7, 12
Ignition Coil 4 Pack (8.0L) BK Right Side of Engine 12
Ignition Coil 6 Pack (8.0L) BK Right Side of Engine 12
Ignition Switch C1 BK Steering Column 32
Ignition Switch C2 GY Steering Column 32
Instrument Cluster C1 Rear of Instrument Cluster 30
Instrument Cluster C2 Rear of Instrument Cluster 30
Intake Air Heater Relay
(Diesel)Left Fender Side Shield 21
Intake Air Temperature
Sensor (Diesel)Left Rear of Engine 13
Intake Air Temperature
Sensor (Gas)BK On Intake Manifold 7, 8
Joint Connector No. 1 In Power Distribution Center N/S
Joint Connector No. 2 In Power Distribution Center N/S
8W - 91 - 4 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONBR/BE
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

Fig. 12 IGNITION COIL (GAS ENGINE)
8W - 91 - 20 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONBR/BE
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

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.
SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS
CIGAR LIGHTER OUTLET
DESCRIPTION
A cigar lighter is standard equipment on this
model. The cigar lighter is installed in the instru-
ment panel next to the ash receiver, which is located
near the center of the instrument panel, below the
radio. The cigar lighter base is secured by a snap fit
within the instrument panel.
The cigar lighter knob and heating element unit,
and the cigar lighter receptacle unit are available for
service. 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 receptacle shell. The receptacle shell
is connected to ground, and an insulated contact in
the bottom of the shell is connected to battery cur-
rent. The cigar lighter receives battery voltage from afuse in the junction block only when the ignition
switch is in the Accessory or On positions.
The 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 receptacle shell, the heat-
ing element resistor coil is grounded through its
housing to the receptacle 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 receptacle
shell.
Two small spring-clip retainers are located on
either side of the insulated contact inside the bottom
of the receptacle shell. These clips engage and hold
the heating element against the insulated contact
long enough 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 receptacle 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 toCigar
Lighterin Wiring Diagrams.
WARNING: REFER TO THE PASSIVE RESTRAINT
SECTION OF THE SERVICE MANUAL BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Check the fused ignition switch output (run/ac-
cessory) fuse in the junction block. 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 On position.
Check for battery voltage at the fused ignition switch
output (run/accessory) fuse in the junction block. If
OK, go to Step 3. If not OK, repair the open fused
Terminal Pick Kit 6680
8W - 97 - 2 8W-97 POWER DISTRIBUTIONBR/BE
POWER DISTRIBUTION (Continued)

ignition switch output (run/accessory) circuit to the
ignition switch as required.
(3) Turn the ignition switch to the Off position.
Remove the cigar lighter knob and element from the
cigar lighter receptacle. Check for continuity between
the inside circumference of the cigar lighter recepta-
cle 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 On position.
Check for battery voltage at the insulated contact
located at the back of the cigar lighter receptacle. 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.
Remove the cigar lighter receptacle from the instru-
ment panel and disconnect the wire harness connec-
tor. Check for continuity between the ground circuit
cavity 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 On position. Check for battery
voltage at the fused ignition switch output (run/ac-
cessory) circuit cavity of the cigar lighter wire har-
ness connector. If OK, replace the faulty cigar lighter
receptacle. If not OK, repair the open fused ignition
switch output (run/accessory) circuit to the junction
block 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
(Fig. 1).
(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 instrument panel (Fig. 2).
(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.
Fig. 1 Cigar Lighter and Power Outlet - Typical
1 - RECEPTACLE BASE
2 - KNOB & ELEMENT
3 - MOUNT
4 - WIRE HARNESS CONNECTOR
5 - POWER OUTLET
Fig. 2 Cigar Lighter and Power Outlet Remove/
Install
1 - KNOB AND ELEMENT
2 - RETAINING BOSSES-ENGAGE PLIERS HERE
3 - BASE
4 - PARTIALLY REMOVED
5 - EXTERNAL SNAP-RING PLIERS
6 - MOUNT
7 - BASE
BR/BE8W-97 POWER DISTRIBUTION 8W - 97 - 3
CIGAR LIGHTER OUTLET (Continued)