Diesel DODGE RAM 2003 Service Repair Manual

ENGINE CONTROL MODULE - C2 (DIESEL) - 50 WAY
CAV CIRCUIT FUNCTION
28 D25 18VT/YL PCI BUS
29 - -
30 A140 16DG/WT FUSED B(+)
31 - -
32 Y135 18LG/BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
33 - -
34 - -
35 K68 18BR/LG INLET AIR PRESSURE SENSE
36 V32 18YL/RD SPEED CONTROL SUPPLY
37 K29 18WT/PK BRAKE SWITCH SENSE
38 - -
39 - -
40 A140 16BG/WT FUSED B(+)
41 C13 18DB/OR A/C CLUTCH RELAY CONTROL
42 - -
43 Y1 18LG PARK LOCKOUT SOLENOID CONTROL
44 - -
45 - -
46 V37 18RD/YL S/C SWITCH SIGNAL
47 K118 18PK/YL BATTERY TEMPERATURE SENSOR SIGNAL
48 - -
49 Z816 16BK/TN GROUND
50 Z816 16BK/TN GROUND
ENGINE COOLANT TEMPERATURE SENSOR (3.7L/4.7L/5.7L) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2 K2 18TN/BK (4.7L/5.7L) ECT SIGNAL
ENGINE COOLANT TEMPERATURE SENSOR (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K104 18RD/WT SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
8W - 80 - 56 8W-80 CONNECTOR PIN-OUTSDR

FOG LAMP-RIGHT - WHITE 2 WAY
CAV CIRCUIT FUNCTION
A Z144 18BK/OR GROUND
B L39 18LB FOG LAMP RELAY OUTPUT
FUEL CONTROL ACTUATOR (DIESEL)-3WAY
CAV CIRCUIT FUNCTION
1 K915 18VT/RD FUEL RAIL SENSOR RETURN
2 K102 18PK/BK FUEL PUMP DRIVER
3 K72 18DG/OR 5 VOLT SUPPLY
FUEL HEATER (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
A A93 14RD/BK FUEL HEATER RELAY OUTPUT
B Z378 14BK GROUND
FUEL INJECTOR NO. 1 (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K91 14TN/RD COMMON INJECTOR DRIVER
2 K11 14WT/DB FUEL INJECTOR NO. 1 CONTROL
FUEL INJECTOR NO. 1 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K11 18WT/DB FUEL INJECTOR NO. 1 DRIVER
1 K11 18WT/DB (NGC) INJECTOR CONTROL NO. 1
2 A142 16DG/OR (NGC) ASD RELAY OUTPUT
2 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 59

FUEL INJECTOR NO. 2 (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K91 14TN/RD COMMON INJECTOR DRIVER
2 K12 14YL/WT FUEL INJECTOR NO.1 CONTROL
FUEL INJECTOR NO. 2 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K12 18TN FUEL INJECTOR NO. 2 DRIVER
1 K12 18TN (NGC) INJECTOR CONTROL NO. 2
2 A142 16DG/OR (NGC) ASD RELAY OUTPUT
2 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
FUEL INJECTOR NO. 3 (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K91 14TNRD COMMON INJECTOR DRIVER
2 K13 14TN FUEL INJECTOR NO. 3 CONTROL
FUEL INJECTOR NO. 3 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K13 18YL/WT FUEL INJECTOR NO. 3 DRIVER
1 K13 18YL/WT (NCG) INJECTOR CONTROL NO. 3
2 A142 16DG/OR (NGC) ASD RELAY OUTPUT
2 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
FUEL INJECTOR NO. 4 (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K92 14TN/PK COMMON INJECTOR DRIVER
2 K14 14RD/WT FUEL INJECTOR NO. 4 CONTROL
8W - 80 - 60 8W-80 CONNECTOR PIN-OUTSDR

FUEL INJECTOR NO. 4 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K14 18LB/BR FUEL INJECTOR NO. 4 DRIVER
1 K14 18LB/BR (NGC) INJECTOR CONTROL NO. 4
2 A142 16DG/OR (NGC) ASD RELAY OUTPUT
2 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
FUEL INJECTOR NO. 5 (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K92 14TN/PK COMMON INJECTOR DRIVER
2 K38 14GY FUEL INJECTOR NO. 5 CONTROL
FUEL INJECTOR NO. 5 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K38 18GY FUEL INJECTOR NO. 5 DRIVER
1 K38 18GY (NGC) INJECTOR CONTROL NO. 5
2 A142 16DG/OR (NGC) ASD RELAY OUTPUT
2 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
FUEL INJECTOR NO. 6 (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K92 14TN/PK COMMON INJECTOR DRIVER
2 K58 14BR/DB FUEL INJECTOR NO. 6 CONTROL
FUEL INJECTOR NO. 6 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K58 18BR/DB FUEL INJECTOR NO. 6 DRIVER
1 K58 18BR/DB (NGC) INJECTOR CONTROL NO. 6
2 A142 16DG/OR (NGC) ASD RELAY OUTPUT
2 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 61

FUEL PUMP MODULE - LT GRAY 4 WAY
CAV CIRCUIT FUNCTION
1 Z211 18BK GROUND
2 K4 18BK/LB SENSOR GROUND
3 G8 18LB/BK FUEL LEVEL SENSOR SIGNAL
4 A64 16DG/WT FUEL PUMP RELAY OUTPUT
FUEL PUMP MOTOR (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K31 18BR FUEL PUMP SIGNAL RETURN
2 K65 18OR/RD FUEL PUMP RELAY CONTROL
GENERATOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K125 18WT/DB (JTEC/DIESEL) GENERATOR SOURCE
1 K20 18DG (NGC) GEN FIELD CONTROL
2 K20 18DG (JTEC/DIESEL) GENERATOR FIELD CONTROL
GLOVE BOX LAMP AND SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 M11 20PK/LB COURTESY LAMP GROUND
2 F32 20RD/YL FUSED B(+)
HEADLAMP SWITCH - BLACK 8 WAY
CAV CIRCUIT FUNCTION
1- -
2- -
3 Y163 20OR/WT HEADLAMP SWITCH ILLUMINATION CONTROL
4 Z214 20LB/BK GROUND
5 L39 20LB FOG LAMP RELAY OUTPUT
6 Y111 20VT/WT PANEL LAMPS DIMMER SIGNAL
7 Y167 20WT/DB HEADLAMP SWITCH RETURN
8 Y126 20VT/YL HEADLAMP SWITCH SIGNAL
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 63

IGNITION SWITCH - BLACK 14 WAY
CAV CIRCUIT FUNCTION
1 A2 12PK/BK FUSED B(+)
2 A51 16RD/WT FUSED B(+)
3 A21 16DB FUSED IGNITION SWITCH OUTPUT (RUN-START)
4 A1 16RD FUSED B(+)
5 G26 20LB KEY-IN IGNITION SWITCH SENSE
6 Z42 20BK/DG GROUND
7 A22 16BK/OR FUSED B(+)
8 C1 12DG BLOWER MOTOR FEED
9 A31 14DB FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
10 F1 10BR/RD FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
11 Y131 14RD/WT FUSED B(+)
12 A30 10CK/WT FUSED B(+)
13 A41 16YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
14 A38 16OR FUSED IGNITION SWITCH OUTPUT (RUN)
INLET AIR TEMPERATURE/ PRESSURE SENSOR (DIESEL)-4WAY
CAV CIRCUIT FUNCTION
1 Y502 18DG/YL INLET AIR TEMPERATURE/PRESSURE RETURN
2 Y523 18VT/WT INLET AIR TEMPERATURE SENSE
3 Y501 18DB/YL SUPPLY VOLTAGE
4 Y503 18GY/BR INLET AIR PRESSURE SENSE
INPUT SPEED SENSOR (3.7L/4.7L/5.7L) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 T52 18RD/BK INPUT SPEED SENSOR SIGNAL
2 T13 18DB/BK SPEED SENSOR GROUND
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 67

INSTRUMENT CLUSTER C3 - WHITE 26 WAY
CAV CIRCUIT FUNCTION
1 M3 20 PK/DB CARGO LAMP DRIVER
2- -
3 M20 20BR COURTESY LAMP DRIVER
4 M11 20PK/LB COURTESY LAMP GROUND
5- -
6 Y165 20OR/YL PANEL LAMPS DRIVER
7- -
8 Y108 20VT/BR WIPER/TURN/BEAM SELECT SWITCH RETURN
9 Y167 20WT/DB HEADLAMP SWITCH RETURN
10 Y128 20DG/GY TRANS RANGE SENSOR ELECTRONIC CLUSTER 5
VOLT SUPPLY
11 Z202 20LB/BK GROUND
12 Z203 20VT/BK GROUND
13 Y105 20BK/RD FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
14 E1 20TN FUSED B(+)
15 P131 20RD/DG (ELECTRIC 4X4) HEATED SEAT SWITCH SUPPLY
16 Y189 20OR/BK (SLT+) PANEL LAMPS FEED
17 Y161 20OR/RD (ELECTRIC 4X4) PANEL LAMPS FEED
18 Y163 20OR/WT HEADLAMP SWITCH ILLUMINATION CONTROL
19 Y166 20OR/DB PANEL LAMPS DRIVER
20 - -
21 D25 20VT/YL PCI BUS
22 G11 20WT/LG PARK BRAKE SWITCH SENSE
23 Z106 20LG/BK GROUND
24 A51 16RD/WT IGNITION SWITCH OUTPUT (OFF-RUN-START)
25 Y107 20VT/RD FUSED IGNITION SWITCH OUTPUT (RUN-START)
26 M1 18PK FUSED B(+)
INTAKE AIR TEMPERATURE SENSOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
INTAKE AIR TEMPERATURE/MANIFOLD ABSOLUTE PRESSURE SENSOR (DIESEL)-4WAY
CAV CIRCUIT FUNCTION
A K55 18LB/WT MAP SENSOR SIGNAL
B K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
C K72 18DG/OR 5 VOLT SUPPLY
D K9 18LB 5 VOLT SUPPLY
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 69

INTEGRATED POWER MODULE C1 - 26 WAY
CAV CIRCUIT FUNCTION
1 A112 12RD/TN (DIESEL) FUSED B(+)
1 A17 16RD/BK (EXCEPT DIESEL) FUSED B(+)
2 Y107 20VT/RD FUSED IGNITION SWITCH OUTPUT (RUN-START)
3- -
4 A20 20RD/DB FUSED IGNITION SWITCH OUTPUT (RUN)
5 Y141 18DG/WT TRAILER TOW LEFT TURN RELAY OUTPUT
6- -
7 Y140 18WT/PK TRAILER TOW RIGHT TURN RELAY OUTPUT
8 Y131 14RD/WT FUSED B(+)
9 M1 18PK FUSED B(+)
10 L7 18BK/YL TRAILER TOW RELAY OUTPUT
11 A21 16DB FUSED IGNITION SWITCH OUTPUT (RUN-START)
12 F35 18RD FUSED B(+)
13 F32 20RD/YL FUSED B(+)
14 X2 18DG/RD HORN RELAY OUTPUT
15 A64 16DG/WT (EXCEPT 4.7L) FUEL PUMP RELAY OUTPUT
16 A108 18TN/RD FUSED B(+)
17 L76 18BK/OR FUSED PARK LAMP RELAY OUTPUT
18 F32 18RD/YL FUSED B(+)
19 Y174 18PK/VT FUSED PARK LAMP RELAY OUTPUT
20 - -
21 - -
22 - -
23 Y145 18DB/YL CONDENSER FAN RELAY CONTROL
24 - -
25 - - -
26 - -
INTEGRATED POWER MODULE C2 - WHITE 15 WAY
CAV CIRCUIT FUNCTION
1 A30 10RD/WT (EXCEPT BASE) FUSED B(+)
2 A34 16LB/RD (ETC) FUSED B(+)
3 Y148 18YL/RD FUSED B(+)
4 A61 16DG/BK (3.9L/5.7L/5.9L) FUEL PUMP RELAY OUTPUT
5 F37 12RD/LB (EXCEPT BASE) FUSED B(+)
6 A2 10PK/BK FUSED B(+)
7 A14 20RD/WT FUSED B(+)
8 A10 14RD/DG FUSED B(+)
9 A12 18RD/TN FUSED B(+)
10 A22 16BK/OR FUSED B(+)
11 - -
12 F30 18RD FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
13 F75 18VT (EXCEPT BASE) FUSED B(+)
14 A1 16RD FUSED B(+)
15 - -
8W - 80 - 70 8W-80 CONNECTOR PIN-OUTSDR

INTEGRATED POWER MODULE C3 - GREEN 20 WAY
CAV CIRCUIT FUNCTION
1 V10 20BR WASHER PUMP MOTOR SENSE
2 L62 18BR/RD RIGHT REAR TURN LAMP DRIVER
3 Z21 18BK/LG GROUND
4 D25 20VT/PK PCI BUS
5 Z12 18BK/TN GROUND
6- -
7- -
8- -
9- -
10 - -
11 L1 18VT/BK BACKUP LAMP FEED
12 - -
13 - -
14 G31 20VT/LG (EXCEPT BASE) AMBIENT TEMPERATURE SENSOR SIGNAL
15 - -
16 L61 18LG LEFT FRONT TURN LAMP DRIVER
17 L24 18WT/LG LEFT STOP LAMP DRIVER
18 L63 18DG/RD LEFT REAR TURN LAMP DRIVER
19 L60 18LG/TN RIGHT FRONT TURN LAMP DRIVER
20 Y137 20VT/LB SENSOR GROUND
INTEGRATED POWER MODULE C4 - BLACK 20 WAY
CAV CIRCUIT FUNCTION
1 Z2 18BK/LG GROUND
2 L22 18LB/WT RIGHT STOP LAMP DRIVER
3- -
4- -
5- -
6- -
7- -
8- -
9- -
10 - -
11 Y134 20GY/RD (3.7L/5.9L) FUSED IGNITION SWITCH OUTPUT (RUN-START)
11 K173 20LG (DIESEL) GROUND
12 V5 20DG WIPER PARK SWITCH SENSE
13 - -
14 - -
15 G29 20BK/TN WASHER FLUID SWITCH SENSE
16 Y135 18LG/BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
17 - -
18 - -
19 - -
20 - -
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 71

INTEGRATED POWER MODULE C5 - 26 WAY
CAV CIRCUIT FUNCTION
1 A38 16OR FUSED IGNITION SWITCH OUTPUT (RUN)
2 K173 18LG (GAS EXCEPT 5.9L) GROUND
2 K173 18LG (5.9L) GROUND
2 K173 20LG (DIESEL) GROUND
3- -
4 L10 18BR/LG FUSED IGNITION SWITCH OUTPUT (RUN)
5 C23 16DG CONDENSER FAN RELAY OUTPUT
6 F15 20DB (DIESEL) FUSED IGNITION SWITCH OUTPUT (RUN)
7 G115 20YL/WT (DIESEL) FUSED B(+)
8 Z316 12BK/OR GROUND
9- -
10 - -
11 C13 18DB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
12 - -
13 A42 18DG (CALIFORNIA) OXYGEN SENSOR DOWNSTREAM RELAY OUTPUT
14 Z114 18BK/LG (DIESEL) GROUND
14 Y145 20DB/YL (EXCEPT DIESEL)
15 A17 16RD/BK (EXCEPT DIESEL)
15 Y135 18LG/BK (DIESEL) FUSED IGNITION SWITCH OUTPUT (RUN-START)
16 K30 18PK TRANSMISSION CONTROL RELAY CONTROL
17 F121 16TN/BK HEATED MIRROR RELAY OUTPUT
18 C3 18DB/BK A/C COMPRESSOR CLUTCH RELAY OUTPUT
19 - -
20 - -
21 C16 20LB/YL HEATED MIRROR RELAY CONTROL
22 V4 16RD/YL WIPER RELAY HIGH SPEED OUTPUT
23 F23 18DB/YL FUSED B(+)
24 F14 18LG/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
25 - -
26 F15 20DB FUSED IGNITION SWITCH OUTPUT (RUN)
26 Y106 20OR/RD (ELECTRIC TRANSFER
CASE)FUSED IGNITION SWITCH OUTPUT (RUN)
INTEGRATED POWER MODULE C6 - BLACK 15 WAY
CAV CIRCUIT FUNCTION
1- -
2 Y133 14RD/OR FUSED B(+)
3- -
4 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
5- -
6- -
7- -
8- -
9- -
10 A93 12RD/BK (DIESEL) FUEL HEATER RELAY OUTPUT
10 C23 16DG (EXCEPT DIESEL)
11 A112 12RD/TN (DIESEL) FUSED B(+)
11 A17 16RD/BK (EXCEPT DIESEL)
12 A31 14BK/WT FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
13 - -
14 T16 14RD TRANSMISSION CONTROL RELAY OUTPUT
15 - -
8W - 80 - 72 8W-80 CONNECTOR PIN-OUTSDR