1998 DODGE RAM 1500 Speed control

POWERTRAIN CONTROL MODULE C1 (NGC) - BLACK 38 WAY
CAV CIRCUIT FUNCTION
1 K98 18DB/YL (EXCEPT 3.7L) COIL CONTROL NO. 8
2- -
3 K97 18BR/YL (4.7L) COIL CONTROL NO. 7
3 K97 18BR (5.7L) COIL CONTROL NO. 7
4 K28 18BR/LB (EXCEPT 3.7L) INJECTOR CONTROL NO. 8
5 K26 18BR/YL (EXCEPT 3.7L) INJECTOR CONTROL NO. 7
6- -
7- -
8 B222 20DG/WT VEHICLE SPEED SIGNAL NO. 2
9 Z130 16BK/BR GROUND
10 - -
11 F202 20PK/GY FUSED IGNITION SWITCH OUTPUT (RUN-START)
12 F1 16PK/WT FUSED IGNITION SWITCH OUTPUT (OFF-RUN-START)
13 B22 20DG/YL VEHICLE SPEED SIGNAL NO. 1
14 - -
15 - -
16 - -
17 - -
18 Z131 16BK/DG GROUND
19 - -
20 G6 18VT/GY OIL PRESSURE SIGNAL
21 C918 18BK/LB A/C PRESSURE SIGNAL
22 G31 18VT/LG AAT SIGNAL
23 - -
24 - -
25 D20 20WT/LG (5.7L) SCI RECEIVE (PCM)
25 D20 17WT/LG (EXCEPT 5.7L) SCI RECEIVE (PCM)
26 D16 18WT/OR (EXCEPT 3.7L M/T) SCI RECEIVE (TCM)
27 F856 18YL/PK 5 VOLT SUPPLY
28 - -
29 A919 20RD FUSED B(+)
30 T751 16YL FUSED IGNITION SWITCH OUTPUT (START)
31 K141 18DB/YL O2 1/2 SIGNAL
32 K902 18BR/DG O2 RETURN (UP)
33 K243 18BR O2 2/2 SIGNAL
34 - -
35 - -
36 D21 20WT/BR (5.7L) SCI TRANSMIT (PCM)
36 D21 18WT/BR (EXCEPT 5.7L) SCI TRANSMIT (PCM)
37 D15 18WT/DG (EXCEPT 3.7L) SCI TRANSMIT (TCM)
38 D25 20WT/VT PCI BUS
8W - 80 - 88 8W-80 CONNECTOR PIN-OUTSDR

POWERTRAIN CONTROL MODULE C4 (NGC) - GREEN 38 WAY
CAV CIRCUIT FUNCTION
1 T60 18YL/GY OVERDRIVE SOLENOID CONTROL
2 T259 18YL/DG 4C SOLENOID CONTROL
3- -
4 T118 18DG MS SOLENOID CONTROL
5- -
6 T219 18YL/LG 2C SOLENOID CONTROL
7- -
8 T59 18YL/LB UNDERDRIVE SOLENOID CONTROL
9- -
10 T20 18DG/WT L/R SOLENOID CONTROL
11 T140 18YL/GY PRESSURE CONTROL SOLENOID CONTROL
12 Z908 18BK GROUND
13 Z977 18BK GROUND
14 Z904 18BK (A/T) GROUND
15 T1 18DG/LB TRS T1 SENSE
16 T3 18DG/DB TRS T3 SENSE
17 T6 18DG TOW/HAUL OVERDRIVE OFF SWITCH SENSE
18 T515 20YL/DB TRANSMISSION CONTROL RELAY CONTROL
19 T16 18YL/OR TRANSMISSION CONTROL RELAY OUTPUT
20 T48 18BR/YL 4C PRESSURE SWITCH SENSE
21 T29 18YL/WT UNDERDRIVE PRESSURE SWITCH SENSE
22 T9 18DG/TN OVERDRIVE PRESSURE SWITCH SENSE
23 - -
24 - -
25 - -
26 T4 18DG/LB TRS T2 SENSE
27 - -
28 T16 18YL/OR TRANSMISSION CONTROL RELAY OUTPUT
29 T50 18YL/TN LOW/REVERSE PRESSURE SWITCH SENSE
30 T147 18DG/YL 2C PRESSURE SWITCH SENSE
31 T38 18YL/BR LINE PRESSURE SENSOR SIGNAL
32 T14 18DG/BR OUTPUT SPEED SENSOR SIGNAL
33 T52 18DG/OR INPUT SPEED SENSOR SIGNAL
34 T13 18DG/VT SPEED SENSOR GROUND
35 T54 18DG/OR TRANSMISSION TEMPERATURE SENSOR SIGNAL
36 - -
37 T42 18DG/YL TRS T42 SENSE
38 T16 18YL/OR TRANSMISSION CONTROL RELAY OUTPUT
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 91

SPEED CONTROL SERVO (DIESEL A/T/NGC)-4WAY
CAV CIRCUIT FUNCTION
1 V36 20VT/YL S/C VACUUM CONTROL
2 V35 20VT/OR S/C VENT CONTROL
3 V30 20VT/WT S/C BRAKE SWITCH OUTPUT
4 Z913 20BK GROUND
SPEED CONTROL SWITCH-LEFT (ETC)-3WAY
CAV CIRCUIT FUNCTION
1 V38 20VT/OR S/C SWITCH NO. 2 SIGNAL
2 V937 20VT/BR S/C SWITCH RETURN
3 V37 20VT S/C SWITCH NO. 1 SIGNAL
SPEED CONTROL SWITCH-LEFT (EXCEPT ETC)-2WAY
CAV CIRCUIT FUNCTION
A V37 20VT S/C SWITCH NO. 1 SIGNAL
B V937 20VT/BR S/C SWITCH RETURN
SPEED CONTROL SWITCH-RIGHT (ETC)-3WAY
CAV CIRCUIT FUNCTION
1 V38 20VT/OR S/C SWITCH NO. 2 SIGNAL
2 V937 20VT/BR S/C SWITCH RETURN
3 V37 20VT S/C SWITCH NO. 1 SIGNAL
SPEED CONTROL SWITCH-RIGHT (EXCEPT ETC)-2WAY
CAV CIRCUIT FUNCTION
1 V37 20VT S/C SWITCH NO. 1 SIGNAL
2 V937 20VT/BR S/C SWITCH RETURN
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 97

VACUUM PUMP (DIESEL)-4WAY
CAV CIRCUIT FUNCTION
1- -
2 F202 20PK/GY FUSED IGNITION SWITCH OUTPUT (RUN-START)
3- -
4 Z936 18BK GROUND
VISTRONIC FAN DRIVE (DIESEL)-6WAY
CAV CIRCUIT FUNCTION
1 K160 18BR/OR PARK LOCKOUT SOLENOID CONTROL
2 K900 18DB/DG SENSOR GROUND
3 K161 18BR/LB FAN SPEED SENSOR
4- -
5 F856 18YL/PK 5 VOLT SUPPLY
6 F504 20GY/PK FUSED IGNITION SWITCH OUTPUT (RUN)
WASHER FLUID LEVEL SWITCH-2WAY
CAV CIRCUIT FUNCTION
1 Z932 20BK GROUND
2 W1 20BR/TN WASHER FLUID SWITCH SENSE
WASHER PUMP MOTOR-FRONT - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z945 20BK GROUND
2 W10 20BR WASHER PUMP MOTOR CONTROL
WATER IN FUEL SENSOR-2WAY
CAV CIRCUIT FUNCTION
A K914 18RD/WT (A/T) SENSOR GROUND
A K914 18BR/WT (M/T) SENSOR GROUND
B G123 18VT/LG WATER IN FUEL SENSOR SIGNAL
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 103

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Glove Box Lamp and Switch BK At Glove Box 35, 39
Governor Pressure Sensor BK Left Rear of Transmission N/S
Hands Free Module Right Instrument Panel 39
Headlamp Switch BK Left Side of Instrument Panel 32, 35, 38
Headlamp-Left BL At Headlamp 23, 28, 29
Headlamp-Right BL At Headlamp 1, 21, 26
Heated Seat Cushion - Driver BL Under Driver Seat N/S
Heated Seat Cushion - Passenger BL Under Passenger Seat N/S
Heated Seat Switch-Driver RD Center of Instrument Panel 33, 35, 36
Heated Seat Switch-Passenger BL Center of Instrument Panel 33, 35, 36
Horn Switch WT In Steering Wheel N/S
Horn-High Note BK Left Front Fender 23, 28, 29
Horn-Low Note BK Left Front Fender 23, 29
Idle Air Control Motor BK On Throttle Body 6
Ignition Coil GY Left Rear of Engine N/S
Ignition Switch BK Steering Column 31
Inlet Air Temperature/Pressure
SensorBK Right Side Engine 10
Input Speed Sensor BK At Transmission 15, 16
Instrument Cluster C1 GY Rear of Instrument Cluster 35
Instrument Cluster C2 GY Rear of Instrument Cluster 35
Instrument Cluster C3 WT Rear of Instrument Cluster 35
Intake Air Heater Relay Right Engine Compartment 2
Intake Air Temperature/Manifold
Absolute Pressure Sensor (Diesel)BK Left rear Engine N/S
Intake Air Temperature Sensor BK On Intake Manifold 5
Integrated Power Module C1 BK Left Front Fender 26, 28
Integrated Power Module C2 WT Left Front Fender 26, 28
Integrated Power Module C3 GR Left Front Fender 26, 28
Integrated Power Module C4 WT Left Front Fender 26, 28
Integrated Power Module C5 BK Left Front Fender 26, 28
Integrated Power Module C6 BK Left Front Fender 25, 26, 28
Integrated Power Module C7 GY Left Front Fender 26, 28
Integrated Power Module FCM BK In IPM N/S
Knock Sensor BK Left Rear of Engine 5, 7, 9
License Lamp-Left BK At Rear Bumper 50, 51
License Lamp-Right BK At Rear Bumper 50, 51
Lift Pump Motor BK Near T/O for WIF Sensor N/S
Line Pressure Sensor BK Right Rear of Transmission 15, 18
Lumbar Motor-Driver DK GY At Driver Seat N/S
Lumbar Motor-Passenger BK At Passenger Seat N/S
Manifold Absolute Pressure Sensor GY Left Front of Intake Manifold 6
Mode Door Actuator 1 BK Right Side of HVAC N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 5
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Mode Door Actuator 2 BK Right Side of HVAC N/S
Multi-Function Switch BK On Steering Column 31
Natural Vacuum Leak Detection
AssemblyBK Rear of Transmission 18, 50
Output Speed Sensor DB Left Side of Transmission 11, 14, 15, 16
Overdrive Switch WT Center of Instrument Panel 35
Overhead Map/Reading Lamp
(Except Base)NAT Center of Headliner N/S
Oxygen Sensor 1/1 Upstream BK Left Front of Side of Transmission 15, 16, 17, 19
Oxygen Sensor 1/2 Downstream NAT Left Rear of Side of Transmission 15, 16, 17, 19
Oxygen Sensor 2/1 Upstream BK Right Front Side of Transmission 15, 17, 18
Oxygen Sensor 2/2 Downstream BK Right Rear Side of Transmission 15, 17, 18
Park Brake Switch At Park Brake 22, 24
Park/Turn Signal Lamp-Left Front BK At Lamp 23, 28, 29
Park/Turn Signal Lamp-Right Front BK At Lamp 1, 21, 26
Passenger Airbag On/Off Switch Right Side of Instrument Panel 33, 35, 39
Passenger Blend Door Actuator
(Dual Zone)BK Right Side of HVAC N/S
Passenger Lumbar Switch At Passenger Seat N/S
Power Mirror-Left BK At Mirror 41
Power Mirror-Right BK At Mirror 42
Power Outlet RD Center of Instrument Panel 35
Power Outlet-Console BK Center of Instrument Panel N/S
Power Seat Motor-Driver Front
VerticalRD At Driver Seat N/S
Power Seat Motor-Driver Horizontal BK At Driver Seat N/S
Power Seat Motor-Driver Rear
VerticalBK At Driver Seat N/S
Power Seat Switch-Driver BK At Driver Seat N/S
Power Seat Switch-Passenger BK At Passenger Seat N/S
Power Steering Pressure Switch BK Near Power Steering Pump 7
Power Window Circuit Breaker Under Instrument Panel 31, 35, 38
Power Window Motor-Driver BK In Driver Door at Motor 41
Power Window Motor-Left Rear BK In Door at Motor 43
Power Window Motor-Passenger BK In Passenger Door at Motor 42
Power Window Motor-Right Rear BK In Door at Motor 43
Power Window Switch-Left Rear BL In Door 43
Power Window Switch-Passenger Passenger Door 42
Power Window Switch-Right Rear BL In Door 43
Powertrain Control Module C1 BK Right Rear Engine Compartment 4, 8
Powertrain Control Module C2 WT Right Rear Engine Compartment 4, 8
Powertrain Control Module C3 GY Right Rear Engine Compartment 21
Powertrain Control Module C4 GN Right Rear Engine Compartment 4, 8
8W - 91 - 6 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONDR
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
PTO Switch Near G107 N/S
Radio C1 (Base) GY Rear of Radio 35, 36
Radio C1 (Premium) BK Rear of Radio 36
Radio C2 (Premium) BK Rear of Radio 36
Radio Antenna - At Antenna Base 37
Radio Antenna Cable - Right Kick Panel 36, 37
Recirculation Door Actuator BK Right Side of HVAC N/S
Red Brake Warning Indicator
SwitchBK Near Master Cylinder 22, 25, 29
Remote Radio Switch-Left BK At Steering Wheel N/S
Remote Radio Switch-Right BK At Steering Wheel N/S
Seat Belt Pretensioner-Left YL Left B-Pillar 44, 46
Seat Belt Pretensioner-Right YL Right B-Pillar 45, 47
Seat Belt Switch-Driver DK GY Left B-Pillar N/S
Seat Belt Tension Reducer
(Standard Cab)YL Left B-Pillar 44
Seat Heater Interface Module GN Under Driver Seat N/S
Sentry Key Immobilizer Module BK On Steering Column 30
Side Marker - Left Front (Dual
Wheels)BK Front of Left Rear Fender 52
Side Marker - Left Rear (Dual
Wheels)BK Rear of Left Rear Fender 52
Side Marker - Right Front (Dual
Wheels)BK Front of Right Rear Fender 52
Side Marker - Right Rear (Dual
Wheels)BK Rear of Right Rear Fender 52
Speaker-Center Instrument Panel WT Center of Instrument Panel 35, 36
Speaker-Left Front Door WT In Left Front Door 41
Speaker-Left Instrument Panel BK Left Side of Instrument Panel 35, 38
Speaker-Left Rear (Standard Cab) WT In Lower Left B-Pillar 44
Speaker-Left Rear Door (Quad
Cab)WT In Left Rear Door 43
Speaker-Right Front Door WT In Right Front Door 42
Speaker-Right Instrument Panel BK Right Side of Instrument Panel 35, 39
Speaker-Right Rear (Standard
Cab)BK In Lower Right B-Pillar 45
Speaker-Right Rear Door (Quad
Cab)BK In Right Rear Door 43
Speed Control Servo BK Left Front Side of Engine
Compartment23, 25
Speed Control Switch - Left
(Except ETC)GN Steering Wheel N/S
Speed Control Switch - Right
(Except ETC)GN Steering Wheel N/S
Speed Control Switch-Left (ETC) WT At Steering Wheel N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 7
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Speed Control Switch-Right (ETC) WT At Steering Wheel N/S
Starter Solenoid Left Engine 23
Tail/Stop/Turn Signal Lamp-Left BK At Lamp 50, 51
Tail/Stop/Turn Signal Lamp-Right BK At Lamp 50, 51
Throttle Position Sensor NAT Throttle Body 6
Trailer Tow Connector BK At Trailer Hitch 51
Trailer Tow Connector-Add On BK At Trailer Hitch 51, 53
Transfer Case Control Module C1 BK Left Side of Instrument Panel 35, 38
Transfer Case Control Module C2 GY Left Side of Instrument Panel 35, 38
Transfer Case Control Module C3 BK Left Side of Instrument Panel 35, 38
Transfer Case Mode Sensor BK Left Front Side of Transfer Case 13, 14, 16, 20
Transfer Case Position Sensor BK Front Middle of Transfer Case 20
Transfer Case Selector Switch BK Center of Instrument Panel 11, 12, 33, 35, 36
Transfer Case Shift Motor BK Left Rear of Transmission 13, 14, 20
Transmission Range Sensor BK Left side of Transmission 11, 14
Transmission Solenoid Assembly BK Left Side of Transmission 14, 11
Transmission Solenoid/TRS
Assembly (3.7L/4.7L)BK Left Side of Transmission 15, 16
Underhood Lamp BK Underside of Hood 29
Vacuum Pump (Diesel) Right Rear Engine Compartment 21
Vistronic Fan Drive Front Engine Compartment 28
Washer Fluid Level Switch BK At Reservoir 21, 23, 26, 28
Washer Pump Motor-Front BK At Washer Fluid Reservoir 21, 23, 26, 28
Water In Fuel Sensor (Diesel) BK Right Side Engine 10
Wheel Speed Sensor-Left Front BK Left Rear Lower Side of Engine
Compartment22, 29
Wheel Speed Sensor-Rear BK Right Rear of Body 51
Wheel Speed Sensor-Right Front GY Right Rear Lower Side of Engine
Compartment21
Wiper Motor-Front BK Left Side of Cowl 22, 25
8W - 91 - 8 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONDR
CONNECTOR/GROUND/SPLICE LOCATION (Continued)