engine DODGE RAM 2002 Service Repair Manual

8W-18 BUS COMMUNICATIONS
Component Page
Cummins Bus....................... 8W-18-4
Data Link Connector................ 8W-18-2, 3
Engine Control Module.............. 8W-18-3, 4
Fuse 12 (JB)...................... 8W-18-2, 3
G105.............................. 8W-18-2
G107.............................. 8W-18-4Component Page
G200............................ 8W-18-2, 3
Joint Connector No. 5............... 8W-18-2, 3
Joint Connector No. 7............... 8W-18-2, 3
Junction Block.................... 8W-18-2, 3
Powertrain Control Module........... 8W-18-2, 3
BR/BE8W-18 BUS COMMUNICATIONS 8W - 18 - 1

8W-20 CHARGING SYSTEM
Component Page
Auxiliary Battery.................... 8W-20-3
Battery.......................... 8W-20-2, 3
Battery Temperature Sensor............ 8W-20-4
Engine Control Module................ 8W-20-4
Engine Starter Motor............... 8W-20-2, 3
Fuse 3 (PDC)....................... 8W-20-4
Fuse Gen (PDC)................... 8W-20-2, 3
Fusible Link........................ 8W-20-3
G113 .............................. 8W-20-3
G114 .............................. 8W-20-2
G115 ............................ 8W-20-2, 3Component Page
G116 .............................. 8W-20-2
G117 .............................. 8W-20-3
G118 .............................. 8W-20-3
G120.............................. 8W-20-3
Generator........................ 8W-20-2, 3
Intake Air Heater Relay No. 1.......... 8W-20-3
Intake Air Heater Relay No. 2.......... 8W-20-3
Joint Connector No. 1................. 8W-20-4
Joint Connector No. 2................. 8W-20-4
Power Distribution Center......... 8W-20-2, 3, 4
Powertrain Control Module......... 8W-20-2, 3, 4
BR/BE8W-20 CHARGING SYSTEM 8W - 20 - 1

8W-21 STARTING SYSTEM
Component Page
Auxiliary Battery.................... 8W-21-2
Battery............................ 8W-21-2
Bypass Jumper...................... 8W-21-2
Clutch Pedal Position Switch........... 8W-21-2
Engine Starter Motor................. 8W-21-2
Engine Starter Motor Relay.......... 8W-21-2, 3Component Page
Fuse 9 (PDC)....................... 8W-21-2
G105.............................. 8W-21-3
Ignition Switch...................... 8W-21-2
Park/Neutral Position Switch........... 8W-21-3
Power Distribution Center............. 8W-21-2
Powertrain Control Module............. 8W-21-3
BR/BE8W-21 STARTING SYSTEM 8W - 21 - 1

8W-30 FUEL/IGNITION SYSTEM
Component Page
A/C Compressor Clutch Relay.... 8W-30-14, 38, 39
A/C High Pressure Switch.......... 8W-30-14, 39
A/C Low Pressure Switch.......... 8W-30-14, 39
A/C-Heater Control............... 8W-30-14, 39
Accelerator Pedal Position Sensor....... 8W-30-30
Airbag Control Module............ 8W-30-15, 40
Automatic Shut Down Relay..... 8W-30-3, 17, 18,
19, 22, 23, 24, 25, 26, 27, 28
Battery........................... 8W-30-35
Battery Temperature Sensor............ 8W-30-4
Brake Lamp Switch.............. 8W-30-8, 7, 37
Camshaft Position Sensor........... 8W-30-5, 32
Capacitor......................... 8W-30-28
Central Timer Module............. 8W-30-15, 40
Clockspring...................... 8W-30-7, 34
Controller Antilock Brake.... 8W-30-13, 15, 38, 40
Crankshaft Position Sensor............ 8W-30-13
Cummins Bus...................... 8W-30-29
Data Link Connector...... 8W-30-2, 15, 16, 40, 41
Daytime Running Lamp Module........ 8W-30-38
Engine Control Module . . 8W-30-3, 7, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40, 41
Engine Coolant Temperature Sensor . . . 8W-30-9, 34
Engine Oil Pressure Sensor......... 8W-30-13, 33
EVAP/Purge Solenoid................ 8W-30-13
Fuel Heater........................ 8W-30-36
Fuel Heater Relay................... 8W-30-36
Fuel Injection Pump.............. 8W-30-31, 37
Fuel Injector No. 1............... 8W-30-23, 26
Fuel Injector No. 2............... 8W-30-24, 27
Fuel Injector No. 3............... 8W-30-23, 26
Fuel Injector No. 4............... 8W-30-24, 27
Fuel Injector No. 5............... 8W-30-23, 26
Fuel Injector No. 6............... 8W-30-24, 27
Fuel Injector No. 7............... 8W-30-23, 26
Fuel Injector No. 8............... 8W-30-24, 27
Fuel Injector No. 9.................. 8W-30-26
Fuel Injector No. 10................. 8W-30-27
Fuel Pump Module.................. 8W-30-12
Fuel Pump Relay......... 8W-30-3, 11, 12, 31, 37
Fuel Tank Module................... 8W-30-42
Fuel Transfer Pump................. 8W-30-34
Fuse 3 (PDC)............... 8W-30-2, 11, 29, 37
Fuse 6 (PDC)....................... 8W-30-3
Fuse 7 (PDC)...................... 8W-30-36
Fuse 9 (JB)................. 8W-30-2, 3, 11, 36
Fuse 11 (JB)................. 8W-30-13, 36, 39
Fuse 12 (JB).................... 8W-30-16, 41
Fuse K (PDC)........... 8W-30-17, 18, 19, 20, 22
Fusible Link....................... 8W-30-35
G100............................. 8W-30-12
G102.......................... 8W-30-36, 37Component Page
G105..................... 8W-30-2, 16, 20, 21
G107.......................... 8W-30-34, 36
G113 .......................... 8W-30-14, 34
G200.......................... 8W-30-16, 37
Generator...................... 8W-30-13, 38
Idle Air Control Motor................ 8W-30-9
Ignition Coil....................... 8W-30-25
Ignition Coil 4 Pack................. 8W-30-28
Ignition Coil 6 Pack................. 8W-30-28
Instrument Cluster............ 8W-30-15, 34, 40
Intake Air Heater................... 8W-30-35
Intake Air Heater Relay No. 1......... 8W-30-35
Intake Air Heater Relay No. 2......... 8W-30-35
Intake Air Temperature Sensor...... 8W-30-10, 32
Joint Connector No. 1....... 8W-30-4, 7, 8, 12, 36,
37, 38, 42
Joint Connector No. 2 . . . 8W-30-2, 3, 11, 17, 18, 19,
22, 23, 24, 25, 26, 27, 28, 29, 35, 37
Joint Connector No. 5............. 8W-30-16, 41
Joint Connector No. 7............. 8W-30-15, 40
Junction Block . . . 8W-30-2, 3, 11, 13, 16, 36, 39, 41
Leak Detection Pump................. 8W-30-8
Left Speed Control Switch............. 8W-30-7
Manifold Absolute Pressure Sensor . . . 8W-30-10, 33
Output Speed Sensor................. 8W-30-5
Overdrive Switch.................... 8W-30-6
Overhead Console................ 8W-30-15, 40
Oxygen Sensor 1/1 Left Bank Up.... 8W-30-18, 20,
21, 22
Oxygen Sensor 1/1 Upstream.......... 8W-30-17
Oxygen Sensor 1/2 Downstream........ 8W-30-17
Oxygen Sensor 1/2 Left Bank Down..... 8W-30-20
Oxygen Sensor 1/2 Pre- Catalyst........ 8W-30-21
Oxygen Sensor 1/3 Post- Catalyst....... 8W-30-21
Oxygen Sensor 2/1 Right Bank Up . . . 8W-30-18, 20,
21, 22
Oxygen Sensor 2/2 Right Bank Down.... 8W-30-20
Oxygen Sensor Downstream Relay . . . 8W-30-19, 21
Park/Neutral Position Switch....... 8W-30-13, 38
Power Distribution Center . . 8W-30-2, 3, 11, 17, 18,
19, 22, 23, 24, 25, 26, 27, 28, 29, 36, 37
Powertrain Control Module . . 8W-30-2, 3, 4, 5, 6, 7,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 36, 37, 38, 39, 40, 41, 42
PTO Switch..................... 8W-30-14, 34
Radio.......................... 8W-30-15, 40
Right Speed Control Switch............ 8W-30-7
Speed Control Servo.................. 8W-30-5
Throttle Position Sensor.............. 8W-30-14
Transmission Control Relay............ 8W-30-5
Transmission Solenoid Assembly . . . 8W-30-6, 14, 39
Water In Fuel Sensor................ 8W-30-34
BR/BE8W-30 FUEL/IGNITION SYSTEM 8W - 30 - 1

8W-33 VEHICLE SPEED CONTROL
Component Page
Brake Lamp Switch...................8w-33-2
Clockspring.........................8w-33-3
Engine Control Module................8w-33-4
G100..............................8w-33-2
Joint Connector No. 1...............8w-33-3, 4Component Page
Left Speed Control Switch..............8w-33-3
Powertrain Control Module...........8w-33-2, 4
Right Speed Control Switch.............8w-33-3
Speed Control Servo..................8w-33-2
BR/BE8W-33 VEHICLE SPEED CONTROL 8W - 33 - 1

8W-34 REAR WHEEL ANTILOCK BRAKES
Component Page
Brake Lamp Switch.................. 8W-34-3
Brake Pressure Switch................ 8W-34-3
Controller Antilock Brake............ 8W-34-2, 3
Engine Control Module................ 8W-34-3
Fuse 3 (JB)......................... 8W-34-2
Fuse 11 (PDC)....................... 8W-34-2
G100.............................. 8W-34-3
G101.............................. 8W-34-2
G107.............................. 8W-34-2Component Page
G200.............................. 8W-34-3
Instrument Cluster................... 8W-34-2
Joint Connector No. 1................. 8W-34-3
Joint Connector No. 7................. 8W-34-2
Junction Block...................... 8W-34-2
Power Distribution Center............. 8W-34-2
Powertrain Control Module............. 8W-34-3
Rear Wheel Speed Sensor.............. 8W-34-2
BR/BE8W-34 REAR WHEEL ANTILOCK BRAKES 8W - 34 - 1

8W-35 ALL WHEEL ANTILOCK BRAKES
Component Page
Brake Lamp Switch.................. 8W-35-4
Brake Pressure Switch................ 8W-35-4
Controller Antilock Brake.......... 8W-35-2, 3, 4
Engine Control Module................ 8W-35-4
Fuse 3 (JB)......................... 8W-35-2
Fuse 11 (PDC)....................... 8W-35-2
G100.............................. 8W-35-4
G101.............................. 8W-35-3
G107.............................. 8W-35-3
G200.............................. 8W-35-4Component Page
Instrument Cluster................... 8W-35-3
Joint Connector No. 1................. 8W-35-4
Joint Connector No. 7................. 8W-35-3
Junction Block...................... 8W-35-2
Left Front Wheel Speed Sensor......... 8W-35-2
Power Distribution Center............. 8W-35-2
Powertrain Control Module............. 8W-35-4
Rear Wheel Speed Sensor.............. 8W-35-2
Right Front Wheel Speed Sensor........ 8W-35-2
BR/BE8W-35 ALL WHEEL ANTILOCK BRAKES 8W - 35 - 1

8W-40 INSTRUMENT CLUSTER
Component Page
Central Timer Module................. 8W-40-3
Data Link Connector................. 8W-40-4
Daytime Running Lamp Module....... 8W-40-2, 7
Engine Control Module................ 8W-40-2
Fuse 5 (JB)......................... 8W-40-5
Fuse 14 (JB).................. 8W-40-2, 3, 4, 7
Fuse 17 (JB)........................ 8W-40-2
Fuse F (PDC)....................... 8W-40-5
G100............................ 8W-40-4, 6
G200............................ 8W-40-2, 6
G201.......................... 8W-40-2, 5, 7
G300.............................. 8W-40-3
G301.............................. 8W-40-3
Headlamp Beam Select Switch.......... 8W-40-7Component Page
Headlamp Switch.................... 8W-40-5
Instrument Cluster......... 8W-40-2, 3, 4, 5, 6, 7
Joint Connector No. 5................. 8W-40-5
Joint Connector No. 7............... 8W-40-4, 6
Joint Connector No. 8................. 8W-40-5
Junction Block............... 8W-40-2, 3, 4, 5, 7
Overdrive Switch.................... 8W-40-6
Park Brake Switch................... 8W-40-2
Power Distribution Center............. 8W-40-5
Powertrain Control Module............. 8W-40-6
Radio............................. 8W-40-5
Seat Belt Switch..................... 8W-40-3
Turn Signal/Hazard Switch............. 8W-40-7
Washer Fluid Level Switch............. 8W-40-4
BR/BE8W-40 INSTRUMENT CLUSTER 8W - 40 - 1

8W-49 OVERHEAD CONSOLE
Component Page
Ambient Temperature Sensor........... 8W-49-5
Automatic Day/Night Mirror............ 8W-49-3
Back-Up Lamp Switch................ 8W-49-3
Central Timer Module................. 8W-49-4
Controller Antilock Brake.............. 8W-49-4
Engine Control Module................ 8W-49-4
Fuse 11 (JB)........................ 8W-49-3
Fuse 12 (JB).................... 8W-49-2, 3, 6
G200............................ 8W-49-2, 5
G201............................ 8W-49-3, 6Component Page
Joint Connector No. 1................. 8W-49-3
Joint Connector No. 7................. 8W-49-4
Joint Connector No. 8................. 8W-49-2
Junction Block................ 8W-49-2, 3, 5, 6
Left Visor/Vanity Lamp................ 8W-49-6
Overhead Console............ 8W-49-2, 3, 4, 5, 6
Park/Neutral Position Switch........... 8W-49-3
Powertrain Control Module............. 8W-49-4
Right Visor/Vanity Lamp............... 8W-49-6
BR/BE8W-49 OVERHEAD CONSOLE 8W - 49 - 1

Component Page
Clutch Pedal Position Switch (M/T)..... 8W-80-35
Controller Antilock Brake C1.......... 8W-80-35
Controller Antilock Brake C2 (ABS)..... 8W-80-35
Crankshaft Position Sensor (Gas 8.0L) . . . 8W-80-36
Crankshaft Position Sensor
(Gas Except 8.0L)................. 8W-80-36
Cummins Bus (Diesel)............... 8W-80-36
Cup Holder Lamp................... 8W-80-36
Data Link Connector................. 8W-80-36
Daytime Running Lamp Module........ 8W-80-37
Dome Lamp....................... 8W-80-37
Driver Airbag...................... 8W-80-37
Driver Cylinder Lock Switch........... 8W-80-37
Driver Door Ajar Switch (Base)......... 8W-80-38
Driver Door Ajar Switch (Premium)..... 8W-80-38
Driver Door Lock Motor.............. 8W-80-38
Driver Door Window/Lock Switch....... 8W-80-38
Driver Heated Seat Cushion........... 8W-80-38
Driver Heated Seat Switch............ 8W-80-39
Driver Lumbar Motor................ 8W-80-39
Driver Power Seat Front Vertical Motor
(Club Cab)....................... 8W-80-39
Driver Power Seat Front Vertical Motor
(Standard Cab)................... 8W-80-39
Driver Power Seat Horizontal Motor
(Club Cab)....................... 8W-80-39
Driver Power Seat Horizontal Motor
(Standard Cab)................... 8W-80-40
Driver Power Seat Rear Vertical Motor
(Club Cab)....................... 8W-80-40
Driver Power Seat Rear Vertical Motor
(Standard Cab)................... 8W-80-40
Driver Power Seat Switch (Club Cab).... 8W-80-40
Driver Power Seat Switch
(Standard Cab)................... 8W-80-41
Driver Power Window Motor........... 8W-80-41
Electric Brake Provision.............. 8W-80-41
Engine Control Module (Diesel)........ 8W-80-41
Engine Coolant Temperature Sensor
(Diesel)......................... 8W-80-42
Engine Coolant Temperature Sensor
(Gas)........................... 8W-80-43
Engine Oil Pressure Sensor (Diesel)..... 8W-80-43
Engine Oil Pressure Sensor (Gas)....... 8W-80-43
EVAP/Purge Solenoid................ 8W-80-43
Front Washer Pump................. 8W-80-43
Fuel Heater (Diesel)................. 8W-80-43
Fuel Injection Pump (Diesel)........... 8W-80-44
Fuel Injector No. 1.................. 8W-80-44
Fuel Injector No. 2.................. 8W-80-44
Fuel Injector No. 3.................. 8W-80-44
Fuel Injector No. 4.................. 8W-80-44
Fuel Injector No. 5.................. 8W-80-45
Fuel Injector No. 6.................. 8W-80-45
Fuel Injector No. 7 (5.2L/5.9L/8.0L)..... 8W-80-45Component Page
Fuel Injector No. 8 (5.2L/5.9L/8.0L)..... 8W-80-45
Fuel Injector No. 9 (8.0L)............. 8W-80-45
Fuel Injector No. 10 (8.0L)............ 8W-80-46
Fuel Pump Module (Gas)............. 8W-80-46
Fuel Tank Module (Diesel)............ 8W-80-46
Fuel Transfer Pump (Diesel)........... 8W-80-46
G300............................. 8W-80-46
Generator......................... 8W-80-47
Glove Box Lamp And Switch........... 8W-80-47
Headlamp Switch C1................ 8W-80-47
Headlamp Switch C2................ 8W-80-47
Heated Mirror Switch................ 8W-80-48
High Note Horn.................... 8W-80-48
Idle Air Control Motor................ 8W-80-48
Ignition Coil (3.9L/5.2L/5.9L).......... 8W-80-48
Ignition Coil 4 Pack (8.0L)............ 8W-80-48
Ignition Coil 6 Pack (8.0L)............ 8W-80-49
Ignition Switch C1.................. 8W-80-49
Ignition Switch C2.................. 8W-80-49
Instrument Cluster C1............... 8W-80-49
Instrument Cluster C2............... 8W-80-50
Intake Air Heater Relays (Diesel)....... 8W-80-50
Intake Air Temperature Sensor (Diesel) . . 8W-80-50
Intake Air Temperature Sensor (Gas).... 8W-80-50
Joint Connector No. 1 (In PDC)........ 8W-80-50
Joint Connector No. 2 (In PDC)........ 8W-80-51
Joint Connector No. 5................ 8W-80-52
Joint Connector No. 6................ 8W-80-52
Joint Connector No. 7................ 8W-80-53
Joint Connector No. 8................ 8W-80-53
Junction Block C1................... 8W-80-54
Junction Block C2................... 8W-80-54
Junction Block C3................... 8W-80-54
Junction Block C4................... 8W-80-55
Junction Block C5................... 8W-80-55
Junction Block C6................... 8W-80-55
Junction Block C7................... 8W-80-55
Junction Block C8................... 8W-80-56
Junction Block C9................... 8W-80-56
Leak Detection Pump (Gas)........... 8W-80-56
Left Back-Up Lamp.................. 8W-80-57
Left Fog Lamp..................... 8W-80-57
Left Front Door Speaker (Premium)..... 8W-80-57
Left Front Door Speaker (Standard)..... 8W-80-57
Left Front Fender Lamp
(Dual Rear Wheels)................ 8W-80-57
Left Front Wheel Speed Sensor (ABS) . . . 8W-80-58
Left Headlamp..................... 8W-80-58
Left License Lamp.................. 8W-80-58
Left Outboard Clearance Lamp......... 8W-80-58
Left Outboard Headlamp............. 8W-80-58
Left Outboard Identification Lamp...... 8W-80-59
Left Park/Turn Signal Lamp........... 8W-80-59
Left Power Mirror................... 8W-80-59
8W - 80 - 2 8W-80 CONNECTOR PIN-OUTSBR/BE