night vision DODGE RAM 2002 Service Repair Manual

²Check Gauges Indicator
²Cruise Indicator (Odometer VFD)
²Four-Wheel Drive Indicator
²High Beam Indicator
²Low Fuel Indicator
²Washer Fluid Indicator
²Malfunction Indicator Lamp (MIL)
²Overdrive-Off Indicator
²Seatbelt Indicator
²Service Reminder Indicator (SRI)
²Transmission Overtemp Indicator
²Turn Signal (Right and Left) Indicators
²Upshift Indicator
²Wait-To-Start Indicator (Diesel Only)
²Water-In-Fuel Indicator (Diesel Only)
Some of these indicators are either programmable
or automatically configured when the EMIC is con-
nected to the vehicle electrical system. This feature
allows those indicators to be activated or deactivated
for compatibility with certain optional equipment.
The EMIC also includes a provision for mounting the
automatic transmission gear selector indicator in the
lower right corner of the cluster. The spring-loaded,
cable driven, mechanical gear selector indicator gives
an indication of the transmission gear that has been
selected with the automatic transmission gear selec-
tor lever. The gear selector indicator pointer is easily
visible through an opening provided in the front of
the cluster overlay, and is also lighted by the cluster
illumination lamps for visibility at night. Models
equipped with a manual transmission have a block-
out plate installed in place of the gear selector indi-
cator.
Cluster illumination is accomplished by adjustable
incandescent back lighting, which illuminates the
gauges for visibility when the exterior lighting is
turned on. The EMIC high beam indicator, turn sig-
nal indicators, and wait-to-start indicator are also
illuminated by dedicated incandescent bulbs. The
remaining indicators in the EMIC are each illumi-
nated by a dedicated Light Emitting Diode (LED)
that is soldered onto the electronic circuit board.
Each of the incandescent bulbs is secured by an inte-
gral bulb holder to the electronic circuit board from
the back of the cluster housing.
Hard wired circuitry connects the EMIC to the
electrical system of the vehicle. These hard wired cir-
cuits are integral to several wire harnesses, which
are routed throughout the vehicle and retained by
many different methods. These circuits may be con-
nected to each other, to the vehicle electrical system
and to the EMIC through the use of a combination of
soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
The EMIC modules for this model are serviced only
as complete units. The EMIC module cannot be
adjusted or repaired. If a gauge, an LED indicator,
the VFD, the electronic circuit board, the circuit
board hardware, the cluster overlay, or the EMIC
housing are damaged or faulty, the entire EMIC mod-
ule must be replaced. The cluster lens and hood unit,
the rear cluster housing cover, the automatic trans-
mission gear selector indicator, and the incandescent
lamp bulbs with holders are available for individual
service replacement.
OPERATION
The ElectroMechanical Instrument Cluster (EMIC)
is designed to allow the vehicle operator to monitor
the conditions of many of the vehicle components and
operating systems. The gauges and indicators in the
EMIC provide valuable information about the various
standard and optional powertrains, fuel and emis-
sions systems, cooling systems, lighting systems,
safety systems and many other convenience items.
The EMIC is installed in the instrument panel so
that all of these monitors can be easily viewed by the
vehicle operator when driving, while still allowing
relative ease of access for service. The microproces-
sor-based EMIC hardware and software uses various
inputs to control the gauges and indicators visible on
the face of the cluster. Some of these inputs are hard
wired, but most are in the form of electronic mes-
sages that are transmitted by other electronic mod-
ules over the Chrysler Collision Detection (CCD) data
bus network. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES/COMMUNICATION
- OPERATION).
The EMIC microprocessor smooths the input data
using algorithms to provide gauge readings that are
accurate, stable and responsive to operating condi-
tions. These algorithms are designed to provide
gauge readings during normal operation that are con-
sistent with customer expectations. However, when
abnormal conditions exist, such as low/high battery
voltage, low oil pressure, or high coolant tempera-
ture, the algorithm drives the gauge pointer to an
extreme position and the microprocessor turns on the
Check Gauges indicator to provide a distinct visual
indication of a problem to the vehicle operator. The
instrument cluster circuitry may also generate a
hard wired chime tone request to the Central Timer
Module (CTM) when it monitors certain conditions or
inputs, in order to provide the vehicle operator with
an audible alert.
BR/BEINSTRUMENT CLUSTER 8J - 3
INSTRUMENT CLUSTER (Continued)

8W-02 COMPONENT INDEX
Component Page
4WD Switch.......................... 8W-31
A/C Compressor Clutch Relay............ 8W-42
A/C Compressor Clutch................. 8W-42
A/C- Heater Control.................... 8W-42
A/C Heater Temperature Select........... 8W-42
A/C High Pressure Switch............... 8W-42
A/C Low Pressure Switch................ 8W-42
Accelerator Pedal Position Sensor......... 8W-30
Aftermarket Center High Mounted Stop
Lamp............................. 8W-51
Aftermarket Trailer Tow Connector........ 8W-54
Airbag Control Module.................. 8W-43
Ambient Temperature Sensor............ 8W-49
Ash Receiver Lamp.................... 8W-44
Automatic Day/Night Mirror............. 8W-49
Automatic Shut Down Relay............. 8W-30
Auxiliary Battery...................... 8W-20
Back-Up Lamp Switch.................. 8W-51
Back-Up Lamp........................ 8W-51
Battery Temperature Sensor............. 8W-30
Battery............................. 8W-20
Blend Door Actuator................... 8W-42
Blower Motor Relay.................... 8W-42
Blower Motor Resistor Block............. 8W-42
Blower Motor......................... 8W-42
Brake Lamp Switch.................... 8W-51
Brake Pressure Switch............... 8W-34, 35
Bypass Jumper....................... 8W-21
Camshaft Position Sensor............... 8W-30
Capacitor......................... 8W-10, 30
Cargo Lamps........................ 8W-44
Center High Mounted Stop Lamps........ 8W-51
Center Identification Lamp.............. 8W-50
Central Timer Module.................. 8W-45
Cigar Lighter......................... 8W-41
Circuit Breakers...................... 8W-12
Clockspring.................. 8W-33, 41, 43, 47
Clutch Pedal Position Switch............. 8W-21
Combination Flasher................... 8W-52
Controller Antilock Brake............ 8W-34, 35
Crankshaft Position Sensor.............. 8W-30
Cummins Bus........................ 8W-18
Cup Holder Lamp..................... 8W-44
Data Link Connector................... 8W-18
Daytime Running Lamp Module.......... 8W-50
Dome Lamp.......................... 8W-44
Driver Airbag......................... 8W-43
Driver Cylinder Lock Switch............. 8W-39
Driver Door Ajar Switch................ 8W-45
Driver Door Lock Motor................. 8W-61
Driver Door Window/Lock Switch...... 8W-60, 61
Driver Heated Seat Cushion............. 8W-63Component Page
Driver Heated Seat Switch.............. 8W-63
Driver Lumbar Motor.................. 8W-63
Driver Power Seat Front Vertical Motor.... 8W-63
Driver Power Seat Horizontal Motor....... 8W-63
Driver Power Seat Rear Vertical Motor..... 8W-63
Driver Power Seat Switch............... 8W-63
Driver Power Window Motor............. 8W-60
Electric Brake Provision................ 8W-54
Engine Control Module................. 8W-30
Engine Coolant Temperature Sensor....... 8W-30
Engine Oil Pressure Sensor.............. 8W-30
Engine Starter Motor Relay.............. 8W-21
Engine Starter Motor................... 8W-21
EVAP/Purge Solenoid................... 8W-30
Fender Lamp......................... 8W-51
Fog Lamp Relay....................... 8W-50
Fog Lamp............................ 8W-50
Fuel Heater Relay..................... 8W-30
Fuel Heater........................ 8W-30-36
Fuel Injection Pump................... 8W-30
Fuel Injectors......................... 8W-30
Fuel Pump Module.................... 8W-30
Fuel Pump Relay...................... 8W-30
Fuel Tank Module..................... 8W-30
Fuel Transfer Pump.................... 8W-30
Fuses (JB)........................... 8W-12
Fuses (PDC).......................... 8W-10
Fusible Link....................... 8W-20, 30
Grounds............................. 8W-15
Generator............................ 8W-20
Glove Box Lamp And Switch............. 8W-44
Headlamp Beam Select Switch........... 8W-50
Headlamp Switch...................... 8W-50
Headlamp........................... 8W-50
Heated Mirror Relay................... 8W-62
Heated Mirror Switch.................. 8W-62
Heated Seat Relay..................... 8W-12
High Note Horn....................... 8W-41
Horn Relay.......................... 8W-41
Horn Switch.......................... 8W-41
Idle Air Control Motor.................. 8W-30
Ignition Coils......................... 8W-30
Ignition Switch....................... 8W-10
Instrument Cluster.................... 8W-40
Intake Air Heater Relays................ 8W-30
Intake Air Heater..................... 8W-30
Intake Air Temperature Sensor........... 8W-30
Intermittent Wiper Switch............... 8W-53
Joint Connectors....... 8W-10, 12, 15, 30, 34, 35,
40, 44, 45, 51, 53, 54, 70
Junction Block........................ 8W-12
Leak Detection Pump.................. 8W-30
BR/BE8W-02 COMPONENT INDEX 8W - 02 - 1

8W-15 GROUND DISTRIBUTION
Component Page
A/C Compressor Clutch.................8W-15-8, 10
A/C Heater Temperature Select.............8W-15-12
A/C-Heater Control.....................8W-15-14
Aftermarket Trailer Tow Connector............8W-15-6
Airbag Control Module....................8W-15-5
Ash Receiver Lamp.....................8W-15-14
Automatic Day/Night Mirror...............8W-15-13
Auxiliary Battery.......................8W-15-11
Battery.............................8W-15-11
Blend Door Actuator.....................8W-15-12
Blower Motor Relay......................8W-15-2
Brake Lamp Switch.....................8W-15-12
Brake Pressure Switch....................8W-15-3
Center High Mounted Stop Lamp No. 1........8W-15-17
Center High Mounted Stop Lamp No. 2........8W-15-17
Center Identification Lamp................8W-15-18
Central Timer Module.................8W-15-12, 13
Cigar Lighter.........................8W-15-14
Clockspring...........................8W-15-4
Combination Flasher....................8W-15-13
Controller Antilock Brake..................8W-15-5
Cummins Bus.........................8W-15-10
Cup Holder Lamp......................8W-15-14
Data Link Connector................8W-15-8, 10, 12
Daytime Running Lamp Module............8W-15-2, 3
Driver Cylinder Lock Switch...............8W-15-16
Driver Door Ajar Switch..................8W-15-16
Driver Door Window/Lock Switch..........8W-15-16, 17
Driver Heated Seat Cushion...............8W-15-15
Driver Heated Seat Switch................8W-15-13
Driver Power Seat Switch..............8W-15-15, 17
Electric Brake Provision..................8W-15-14
Engine Control Module....................8W-15-9
Engine Starter Motor Relay...............8W-15-8, 9
Fuel Heater..........................8W-15-10
Fuel Heater Relay.......................8W-15-2
Fuel Injection Pump.....................8W-15-9
Fuel Pump Module......................8W-15-7
Fuel Pump Relay.......................8W-15-2
Fuel Transfer Pump.....................8W-15-10
G100......................8W-15-2, 3, 4, 5, 7, 12
G101...............................8W-15-5
G102...............................8W-15-2
G105...............................8W-15-8
G107...............................8W-15-10
G113...............................8W-15-11
G114...............................8W-15-11
G115...............................8W-15-11
G116...............................8W-15-11
G117...............................8W-15-11
G118...............................8W-15-11
G120...............................8W-15-11
G200...........................8W-15-7, 12, 14
G201..........................8W-15-12, 13, 14
G300..........................8W-15-15, 16, 17
G301...............................8W-15-17
G302...............................8W-15-18
Glove Box Lamp And Switch...............8W-15-14
Headlamp Beam Select Switch..............8W-15-14
Headlamp Switch....................8W-15-13, 14
Heated Mirror Switch....................8W-15-13
High Note Horn........................8W-15-7
Ignition Switch........................8W-15-13
Instrument Cluster...................8W-15-12, 14
Component Page
Intake Air Heater Relay No. 1...............8W-15-9
Intake Air Heater Relay No. 2...............8W-15-9
Joint Connector No. 1...................8W-15-2, 5
Joint Connector No. 2....................8W-15-9
Joint Connector No. 5.................8W-15-13, 14
Joint Connector No. 6...................8W-15-4, 5
Joint Connector No. 8..................8W-15-5, 13
Junction Block...................8W-15-12, 13, 14
Left Back-Up Lamp......................8W-15-6
Left Front Door Speaker...................8W-15-4
Left Front Fender Lamp...................8W-15-6
Left License Lamp.......................8W-15-6
Left Outboard Clearance Lamp.............8W-15-18
Left Outboard Identification Lamp...........8W-15-18
Left Park/Turn Signal Lamp................8W-15-3
Left Power Mirror......................8W-15-16
Left Rear Fender Lamp...................8W-15-6
Left Remote Radio Switch..................8W-15-4
Left Tail/Stop/Turn Signal Lamp.............8W-15-6
Left Visor/Vanity Lamp...................8W-15-13
Low Note Horn.........................8W-15-7
Overdrive Switch.......................8W-15-12
Overhead Console......................8W-15-12
Oxygen Sensor 1/2 Left Bank Down...........8W-15-8
Oxygen Sensor 1/2 Pre-Catalyst..............8W-15-8
Oxygen Sensor 1/3 Post-Catalyst.............8W-15-8
Oxygen Sensor 2/2 Right Bank Down..........8W-15-8
Passenger Airbag On/Off Switch..............8W-15-5
Passenger Cylinder Lock Switch.............8W-15-16
Passenger Door Ajar Switch................8W-15-16
Passenger Door Window/Lock Switch..........8W-15-16
Passenger Heated Seat Cushion.............8W-15-15
Passenger Heated Seat Switch..............8W-15-13
Passenger Power Seat Switch..............8W-15-15
Power Distribution Center.................8W-15-2
Power Mirror Switch....................8W-15-16
Power Outlet.........................8W-15-14
Powertrain Control Module..............8W-15-8, 10
Quad High Beam Relay...................8W-15-2
Radio...............................8W-15-5
Radio Choke Relay......................8W-15-4
Right Back-Up Lamp.....................8W-15-6
Right Front Door Speaker..................8W-15-4
Right Front Fender Lamp..................8W-15-6
Right License Lamp......................8W-15-6
Right Outboard Clearance Lamp............8W-15-18
Right Outboard Identification Lamp..........8W-15-18
Right Park/Turn Signal Lamp...............8W-15-7
Right Power Mirror.....................8W-15-16
Right Rear Fender Lamp..................8W-15-6
Right Remote Radio Switch.................8W-15-4
Right Tail/Stop/Turn Signal Lamp............8W-15-6
Right Visor/Vanity Lamp..................8W-15-13
Seat Belt Switch.....................8W-15-15, 17
Seat Heat Interface Module................8W-15-15
Security Relay.........................8W-15-2
Speed Control Servo.....................8W-15-3
Tailgate Lamp.........................8W-15-6
Trailer Tow Connector....................8W-15-6
Trailer Tow Relay.......................8W-15-2
Underhood Lamp.......................8W-15-3
Washer Fluid Level Switch.................8W-15-3
Windshield Washer Pump..................8W-15-7
Wiper Motor...........................8W-15-7
BR/BE8W-15 GROUND DISTRIBUTION 8W - 15 - 1

8W-51 REAR LIGHTING
Component Page
Aftermarket Center High Mounted Stop
Lamp........................... 8W-51-4
Aftermarket Trailer Tow Connector...... 8W-51-2
Automatic Day/Night Mirror............ 8W-51-2
Back-Up Lamp Switch................ 8W-51-2
Brake Lamp Switch.................. 8W-51-3
Center High Mounted Stop Lamp No. 1 . . . 8W-51-4
Center High Mounted Stop Lamp No. 2 . . . 8W-51-4
Electric Brake Provision............... 8W-51-4
Fuse 5 (PDC)....................... 8W-51-3
Fuse 7 (JB)......................... 8W-51-2
Fuse F (PDC)....................... 8W-51-4
G100.......................... 8W-51-2, 5, 6
G200.............................. 8W-51-3
Headlamp Switch.................... 8W-51-4
Joint Connector No. 1............... 8W-51-2, 3
Joint Connector No. 6............... 8W-51-3, 4
Junction Block...................... 8W-51-2Component Page
Left Back-Up Lamp.................. 8W-51-2
Left Front Fender Lamp............... 8W-51-6
Left License Lamp................. 8W-51-5, 6
Left Rear Fender Lamp............... 8W-51-6
Left Tail/Stop/Turn Signal Lamp......... 8W-51-5
Park/Neutral Position Switch........... 8W-51-2
Power Distribution Center........... 8W-51-3, 4
Powertrain Control Module............. 8W-51-3
Right Back-Up Lamp................. 8W-51-2
Right Front Fender Lamp.............. 8W-51-6
Right License Lamp.................. 8W-51-5
Right Rear Fender Lamp.............. 8W-51-6
Right Tail/Stop/Turn Signal Lamp....... 8W-51-5
Speed Control Servo.................. 8W-51-3
Tailgate Lamp....................... 8W-51-6
Trailer Tow Connector................. 8W-51-2
Turn Signal/Hazard Switch............. 8W-51-5
BR/BE8W-51 REAR LIGHTING 8W - 51 - 1

CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
Clockspring C1 Steering Column 32
Clockspring C2 Steering Column 32
Clockspring C3 Steering Column 32
Clutch Pedal Position Switch
(M/T)BK Top of Clutch Pedal 35
Controller Anti-Lock Brake C1 BK Left Fender Side Shield 18
Controller Anti-Lock Brake C2
(ABS)BK Left Fender Side Shield 18
Crankshaft Position Sensor
(V8)BK Rear of Engine Block 5
Crankshaft Position Sensor
(V10GY Right Side of Engine Block 8
Cummins Bus (-) Left Front of Engine 13
Cup Holder Lamp BK Center of Instrument Panel 30, 34
Data Link Connector BK Left Bottom of Instrument Panel 30, 32
Day/Night Mirror BK Day/Night Mirror N/S
Daytime Running Lamp
ModuleBK Left Fender Side Shield 18
Dome Lamp BK Rear of Cab 23
Driver Airbag YL Steering Wheel N/S
Driver Cylinder Lock Switch BK In Door 24
Driver Door Ajar Switch NAT Door Jamb N/S
Driver Door Lock Motor BK In Door 24
Driver Door Window/Lock
SwitchBL In Door 24
Driver Heated Seat Cushion BL Under Seat N/S
Driver Heated Seat Switch RD Center of Instrument Panel N/S
Driver Lumbar Motor Under Seat N/S
Driver Power Seat Front
Vertical MotorBK Under Seat N/S
Driver Power Seat Horizontal
MotorBK Under Seat N/S
Driver Power Seat Rear
Vertical MotorBK Under Seat N/S
Driver Power Seat Switch At Seat N/S
Driver Power Window Motor In Door 24
EVAP/Purge Solenoid BK Right Fender Side Shield 22
Electric Brake Provision Bottom Left of Instrument Panel N/S
Engine Control Module
(Diesel)Left Side Engine 15
Engine Coolant Temperature
Sensor (Diesel)BK Left Front of Cylinder Head (Diesel) 13
Engine Coolant Temperature
Sensor (Gas)BK On Thermostat Housing 5, 8
BR/BE8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 3
CONNECTOR/GROUND/SPLICE LOCATION (Continued)