engine DODGE RAM 2002 Service Repair Manual

C114 - BLACK (AMBIENT TEMPERATURE SEN-
SOR SIDE)
CAV CIRCUIT
1 G31 20VT/LG
2 G32 20BK/VT
C114 - BLACK (HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 G31 20VT/LG
2 G32 20BK/VT
C125 (DIESEL) - (ENGINE SIDE)
CAV CIRCUIT
1 F18 18LG/BK
2 G113 18OR
3 A14 12RD/WT
4 C3 18DB/BK
5 C90 18LG/WT
6 K22 18OR/DB
7 A40 14RD/LG
8 K131 18BR/WT
9 A93 12RD/BK
10 K104 18BK/LB
11 G7 18WT/OR
C125 (DIESEL) - (TRANSMISSION SIDE)
CAV CIRCUIT
1 F18 18LG/BK
2 G113 18OR
3 A14 14RD/WT
4 C3 18DB/BK
5 C90 18LG/WT
6 K22 18OR/DB
7 A40 14RD/LG
8 K131 18BR/WT
9 A93 12RD/BK
10 K104 18BK/LB
11 G7 18WT/OR
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 9

C126 (DIESEL) - GRAY (ENGINE SIDE)
CAV CIRCUIT
1 K20 18DG
2 V37 18RD/LG (M/T)
3 T125 18DB
4 D20 18DG
5 D21 18PK/DB
6 D1 18VT/BR
7 D2 18WT/BK
8 G85 18OR/BK
9 C22 18DB
10 K24 18GY/BK
11 V32 18YL/BK
12 Z12 18BK/TN
13 S21 18YL/BK
14 S22 18OR/BK
C126 (DIESEL) - GRAY (TRANSMISSION SIDE)
CAV CIRCUIT
1 K20 18DG
2 V37 18RD/LG (A/T)
2 Z12 18BK/TN (M/T)
3 T125 18DB
4 D20 18DG
5 D21 18PK/DB
6 D1 18VT/BR
7 D2 18WT/BK
8 G85 18OR/BK
9 C22 18DB
10 K24 18GY/BK
11 V40 18WT/PK
12 Z12 18BK/TN
13 S21 18YL/BK
14 S22 18OR/BK
C129 - (CHASSIS HARNESS SIDE)
CAV CIRCUIT
1 B113 20RD/VT
2 B114 20WT/VT
3 Z13 12BK
4 B40 12LB
5 K4 20BK/LB
6 K226 20DB/WT
7 L7 16BK/YL
8 L50 18WT/TN
9 L76 12BK/OR
10 L63 16DG/RD
8W - 80 - 10 8W-80 CONNECTOR PIN-OUTSBR/BE

C130 (DIESEL) (IN PDC) - (HEADLAMP AND
DASH SIDE)
CAV CIRCUIT
27 -
28 F18 20LG/BK
29 K30 22PK
30 A341 20DG/YL
31 T16 18RD
32 D220 20WT/VT
33 G7 20WT/OR
34 T6 22OR/WT
35 T125 18DB
36 S21 18YL/BK
37 S22 18OR/BK
39 Z12 18BK/TN
40 V30 20DB/RD
41 V30 20DB/RD
42 K52 18PK/WT
43 Z12 18BK/TN
C130 (GAS) - (ENGINE HARNESS SIDE)
CAV CIRCUIT
1 V35 18LG/RD
2 V32 18YL/RD
3 A14 16RD/WT
4 A142 14DG/OR
5-
6-
7 K118 18PK/YL
8 L1 18VT/BK
9-
10 -
11 V40 18WT/PK
12 L10 18BR/LG
12 L10 18BR/LG
13 D1 18VT/BR
14 K51 18DB/YL
15 C13 18DB/OR
16 D20 18DG
17 D2 18WT/BK
18 K4 20BK/LB
19 C90 18LG/WT
20 D21 18PK/DB
21 K106 18WT/DG
22 K107 18OR
23 -
24 Z12 18BK/TN
25 Y128 18DG/GY(8.0L)
26 K145 20DG/PK(CALIFORNIA)
27 K52 18PK/WT
28 A141 18DG/WT(EXCEPT CALIFORNIA)
29 K30 18PK(A/T
30 A341 18DG/YL(CALIFORNIA)
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 13

C130 (GAS) - (ENGINE HARNESS SIDE)
CAV CIRCUIT
31 T16 18RD(A/T)
32 -
33 G7 18WT/OR
34 T6 18OR/WT(A/T)
35 T125 18DB(A/T)
36 Y193 18WT/LG
37 T41 20BK/WT
37 Z11 20BK/WT(M/T)
38 K31 18BR/WT
39 F18 18LG/BK
40 C3 18DB/BK
41 V37 18RD/LG
42 K226 18DB/WT(EXCEPT 8.0L,A/T)
43 V36 18TN/RD
C130 (GAS) (IN PDC) - (HEADLAMP AND DASH
SIDE)
CAV CIRCUIT
1 V35 20LG/RD
2 V32 20YL/RD
3 A14 16RD/WT
4 A142 14DG/OR
5-
6-
7 K118 20PK/YL
8 L1 18VT/BK
9-
10 -
11 V40 22WT/PK
12 L10 18BR/LG
12 L10 18BR/LG
13 D1 20VT/BR
14 K51 20DB/YL
15 C13 22DB/OR
16 D20 20DG
17 D2 20WT/BK
18 K4 22BK/LB
19 C90 22LG/WT
20 D21 20PK/DB
21 K106 18WT/DG
22 K107 18OR
23 -
24 Z12 18BK/TN
25 Y128 18DG/GY(8.0L)
26 K145 20DG/PK(CALIFORNIA)
27 K52 18PK/WT
28 A141 20DG/WT (EXCEPT CALIFORNIA)
29 K30 22PK (A/T)
30 A341 20DG/YL (CALIFORNIA)
31 T16 18RD
32 -
8W - 80 - 14 8W-80 CONNECTOR PIN-OUTSBR/BE

DRIVER POWER SEAT SWITCH (STANDARD CAB) - 14 WAY
CAV CIRCUIT FUNCTION
A F37 14RD/LB FUSED B(+)
B Z3 14BK/OR GROUND
C- -
D- -
E P11 14YL/WT LEFT SEAT REAR UP
F- -
G- -
H- -
I- -
J P13 14RD/WT LEFT SEAT REAR DOWN
K P17 14DB/RD LEFT SEAT HORIZONTAL REARWARD
L P15 14YL/LB LEFT SEAT HORIZONTAL FORWARD
M P19 14YL/LG LEFT SEAT FRONT UP
N P21 14RD/LG LEFT SEAT FRONT DOWN
DRIVER POWER WINDOW MOTOR-2WAY
CAV CIRCUIT FUNCTION
1 Q11 16LB LEFT WINDOW DRIVER (UP)
2 Q21 16WT LEFT FRONT WINDOW DRIVER (DOWN)
ELECTRIC BRAKE PROVISION-4WAY
CAV CIRCUIT FUNCTION
1 A6 12RD/OR FUSED B(+)
2 B40 12LB TRAILER TOW BRAKE B(+)
3 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
4 Z3 18BK/OR GROUND
ENGINE CONTROL MODULE (DIESEL) - 50 WAY
CAV CIRCUIT FUNCTION
1 H104 18BR/OR IDLE VALIDATION SWITCH NO. 1
2 K244 20YL/DB CUMMINS BUS (+)
3 K6 18VT/WT 5V SUPPLY
4 K14 18BK/DB SENSOR GROUND
5 F18 18LG/BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
6 G60 18GY/BK ENGINE OIL PRESSURE SENSOR SIGNAL
7 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
8 G12 18GY/RD MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL
9- -
10 K7 18OR 5V SUPPLY
11 K104 18BK/LB SENSOR GROUND
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 41

ENGINE CONTROL MODULE (DIESEL) - 50 WAY
CAV CIRCUIT FUNCTION
12 K246 20YL/DG CUMMINS BUS (-)
13 K242 20WT DATA LINK (+) FUEL INJECTION PUMP
14 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
15 K135 18YL/WT TRANSFER PUMP SUPPLY
16 H105 18LG/DB IDLE VALIDATION SWITCH NO. 2
17 K124 18GY CAMSHAFT POSITION SENSOR SIGNAL
18 K48 18DG FUEL INJECTION PUMP SYNC SIGNAL
19 - -
20 - -
21 K1 18DG/RD WATER IN FUEL SENSOR SIGNAL
22 V37 18RD/LG SPEED CONTROL SWITCH SIGNAL
23 K240 20BK DATA LINK (-) FUEL INJECTOR PUMP
24 V32 18YL/RD BRAKE SWITCH SENSE
25 H102 18LB/BK ACCELERATOR PEDAL POSITION SENSOR SIGNAL
26 G113 18OR PTO SWITCH SENSE
27 - -
28 K22 18OR/DB ACCELERATOR PEDAL POSITION SENSOR SIGNAL
29 S21 18YL/BK AIR INTAKE HEATER RELAY NO. 1
30 Z12 18BK/TN GROUND
31 H101 18DB/WT ACCELERATOR PEDAL POSITION SENSOR SUPPLY
32 H103 18BK/YL ACCELERATOR PEDAL POSITION SENSOR GROUND
33 K45 18LB/RD FUEL SHUT-OFF SIGNAL
34 K44 18VT/OR LOW IDLE SELECT
35 K135 18YL/WT TRANSFER PUMP SUPPLY
36 K131 18BR/WT FUEL INJECTOR PUMP RELAY CONTROL
37 G85 18OR/BK WAIT-TO-START WARNING INDICATOR DRIVER
38 D21 18PK/DB SCI TRANSMIT
39 D20 18DG SCI RECEIVE
40 D2 18WT/BK CCD BUS (-)
41 D1 18VT/BR CCD BUS (+)
42 - -
43 G7 18WT/OR VEHICLE SPEED SENSOR SIGNAL
44 K243 20OR/BR DATA LINK SHIELD FUEL INJECTOR PUMP
45 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
46 - -
47 S22 18OR/BK AIR INTAKE HEATER RELAY CONTROL NO. 2
48 A14 18RD/WT FUSED B(+)
49 Z12 18BK/TN GROUND
50 A14 18RD/WT FUSED B(+)
ENGINE COOLANT TEMPERATURE SENSOR (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
A K104 18BK/LB SENSOR GROUND
B K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
8W - 80 - 42 8W-80 CONNECTOR PIN-OUTSBR/BE

ENGINE COOLANT TEMPERATURE SENSOR (GAS)-2WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
ENGINE OIL PRESSURE SENSOR (DIESEL) - GRAY 3 WAY
CAV CIRCUIT FUNCTION
A K7 18OR 5V SUPPLY
B K104 18BK/LB ENGINE OIL PRESSURE SENSOR RETURN
C G60 18GY/BK ENGINE OIL PRESSURE SENSOR SIGNAL
ENGINE OIL PRESSURE SENSOR (GAS)-2WAY
CAV CIRCUIT FUNCTION
1 K4 20BK/LB SENSOR GROUND
2 G60 18GY/OR ENGINE OIL PRESSURE SENSOR SIGNAL
EVAP/PURGE SOLENOID-2WAY
CAV CIRCUIT FUNCTION
1 K52 18PK/WT EVAPORATIVE EMISSION SOLENOID CONTROL
2 F12 20DB/WT FUSED IGNITION SWITCH OUTPUT (RUN-START)
WINDSHIELD WASHER PUMP - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 V10 16BR WASHER SWITCH SENSE
2 Z1 20BK GROUND
FUEL HEATER (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
A Z11 14BK/TN GROUND
B A93 12RD/BK FUEL HEATER RELAY OUTPUT
BR/BE8W-80 CONNECTOR PIN-OUTS 8W - 80 - 43

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

POWERTRAIN CONTROL MODULE C2 (GAS) - WHITE 32 WAY
CAV CIRCUIT FUNCTION
13 K28 18GY/LB (5.9L)(8.0L) FUEL INJECTOR NO. 8 DRIVER
14 K116 18WT (8.0L) FUEL INJECTOR NO. 10 DRIVER
15 K12 18TN FUEL INJECTOR NO. 2 DRIVER
16 K14 18LB/BR FUEL INJECTOR NO. 4 DRIVER
17 - -
18 - -
19 - -
20 - -
21 T60 18BR (A/T)(5.9L) 3-4 SHIFT SOLENOID CONTROL
22 - -
23 G60 18GY/OR ENGINE OIL PRESSURE SENSOR SIGNAL
23 G60 18GY/OR(5.9L) ENGINE OIL PRESURE SENSOR SIGNAL
24 - -
25 T13 18DB/BK (A/T)(5.9L) OUTPUT SPEED SENSOR GROUND
26 - -
27 G7 18WT/OR VEHICLE SPEED SENSOR SIGNAL
28 T14 18LG/BK (A/T)(5.9L) OUTPUT SPEED SENSOR SIGNAL
29 T25 18LG/WT (A/T)(5.9L) GOVERNOR PRESSURE SENSOR SIGNAL
30 K30 18PK (A/T)(5.9L) TRANSMISSION CONTROL RELAY CONTROL
31 K7 18OR (A/T)(5.9L) 5V SUPPLY
32 - -
POWERTRAIN CONTROL MODULE C3 (DIESEL) - GRAY 32 WAY
CAV CIRCUIT FUNCTION
1 C13 18DB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
2- -
3 K51 18DB/YL AUTOMATIC SHUT DOWN RELAY CONTROL
4 V36 18TN/RD SPEED CONTROL VACUUM SOLENOID CONTROL
5 V35 18LG/RD SPEED CONTROL VENT SOLENOID CONTROL
6- -
7- -
8- -
9- -
10 - -
11 V32 18YL/RD SPEED CONTROL SUPPLY
12 A142 14DG/OR AUTOMATIC SHUT DOWN RELAY OUTPUT
13 T6 18OR/WT (A/T) OVERDRIVE OFF SWITCH SENSE
14 - -
15 K118 18PK/YL BATTERY TEMPERATURE SENSOR SIGNAL
16 - -
17 - -
18 - -
19 - -
20 - -
21 - -
22 C20 18BR A/C SWITCH SENSE
23 C90 18LG/WT A/C SELECT INPUT
24 V40 18WT/PK BRAKE SWITCH SENSE
25 T125 18DB GENERATOR SOURCE
26 K226 18DB/WT FUEL LEVEL SENSOR SIGNAL
27 D21 18PK/DB SCI TRANSMIT
8W - 80 - 72 8W-80 CONNECTOR PIN-OUTSBR/BE

8W-91 CONNECTOR/GROUND/SPLICE LOCATION
TABLE OF CONTENTS
page
CONNECTOR/GROUND/SPLICE LOCATION
DESCRIPTION..........................1
CONNECTOR/GROUND/SPLICE
LOCATION
DESCRIPTION
This section provides illustrations identifying con-
nector, ground, and splice locations in the vehicle.Connector, ground, and splice indexes are provided.
Use the wiring diagrams in each section for connec-
tor, ground, and splice identification. Refer to the
index for the proper figure number. For items that
are not shown in this section N/S is placed in the
Fig. column.
CONNECTORS
CONNECTOR NAME/
NUMBERCOLOR LOCATION FIG.
4WD Switch BK On Front Axle N/S
A/C Compressor Clutch BK Rear of A/C Compressor 7, 8, 11
A/C Heater Control BK Center of Instrument Panel 33
A/C Heater Temperature
SelectNAT Center of Instrument Panel 33
A/C High Pressure Switch BK At A/C Compressor 7, 8, 11
A/C Low Pressure Switch BK Top of A/C Accumulator 1, 3
Accelerator Pedal Position
Sensor (Diesel)Left Front of Engine 13, 14
Aftermarket Trailer Tow
ConnectorRear of Vehicle N/S
Airbag Control Module Center of I.P. at Airbag Control Module 30
Ambient Temperature Sensor BK Radiator Left Support N/S
Ash Receiver Lamp BK Center of Instrument Panel 34
Back-up Lamp Switch (M/T) BK Top of Transmission 16
Battery Temperature Sensor BK Below Battery Tray 21
Blend Door Actuator Center of Instrument Panel N/S
Blower Motor BK Bottom Right of Instrument Panel 30
Blower Motor Resistor Block BK Bottom Right of Instrument Panel 34
Brake Lamp Switch Brake Pedal Arm 30, 32
Brake Pressure Switch BK At Master Cylinder 18
Bypass Jumper (A/T) GN Top Of Clutch Pedal 35
C105 Rear of Front Bumper N/S
C106 BK Rear of Front Bumper 22
C114 BK Radiator Left Support 20
C125 (Diesel) BK Left Rear of Engine Compartment 3
BR/BE8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 1