DODGE RAM 2003 Service Repair Manual

HEADLAMP-LEFT - BLUE 3 WAY
CAV CIRCUIT FUNCTION
1 Y171 18WT/DG LEFT LOW BEAM OUTPUT
2 Z141 18BK/LB GROUND
3 Y170 18WT/LG LEFT HIGH BEAM OUTPUT
HEADLAMP-RIGHT - BLUE 3 WAY
CAV CIRCUIT FUNCTION
1 Y169 18WT/TN RIGHT LOW BEAM OUTPUT
2 Z142 18BK/LG GROUND
3 Y168 18WT/LB RIGHT HIGH BEAM OUTPUT
HEATED SEAT CUSHION-PASSENGER - BLUE 4 WAY
CAV CIRCUIT FUNCTION
1 P142 20TN/DB PASSENGER SEAT TEMPERATURE SENSOR INPUT
2 Z121 20BK/WT GROUND
3 P144 20BK/LG PASSENGER SEAT TEMPERATURE 5 VOLT SUPPLY
4 P86 20PK/BK SEAT HEATER DRIVER
HEATED SEAT SWITCH-DRIVER - RED 6 WAY
CAV CIRCUIT FUNCTION
1 P137 20VT/DG DRIVER SEAT LOW HEAT LED DRIVER
2 Y161 20OR/RD PANEL LAMPS FEED
3 Z259 20BK/LG GROUND
4 P131 20RD/DG HEATED SEAT SWITCH SUPPLY
5 P139 20VT/WT DRIVER SEAT HIGH HEAT LED DRIVER
6 P133 20TN/DG DRIVER SEAT HEATER MUX SWITCH
8W - 80 - 64 8W-80 CONNECTOR PIN-OUTSDR

HEATED SEAT SWITCH-PASSENGER - BLUE 6 WAY
CAV CIRCUIT FUNCTION
1 P138 20VT/LG PASSENGER SEAT LOW HEAT LED DRIVER
2 Y161 20OR/RD PANEL LAMPS FEED
3 Z260 20DG/BK GROUND
4 P131 20RD/DG HEATED SEAT SWITCH SUPPLY
5 P140 20VT/BK PASSENGER SEAT HIGH HEAT LED DRIVER
6 P134 20TN/LG PASSENGER SEAT HEATER MUX SWITCH
HORN SWITCH - WHITE 2 WAY
CAV CIRCUIT FUNCTION
1 X3 20BK/RD HORN SWITCH SENSE
2- -
HORN-HIGH NOTE - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 X2 18DG/RD HORN RELAY OUTPUT
2 Z307 18BK/WT GROUND
HORN-LOW NOTE - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 X2 18DG/RD HORN RELAY OUTPUT
2 Z308 18BK/BR GROUND
IDLE AIR CONTROL MOTOR (3.7L/5.9L/8.0L) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
C K39 18GY/RD IDLE AIR CONTROL MOTOR NO. 3 DRIVER
B K60 18YL/BK IDLE AIR CONTROL MOTOR NO. 2 DRIVER
A K40 18BR/WT IDLE AIR CONTROL MOTOR NO. 1 DRIVER
D K59 18VT/BK IDLE AIR CONTROL MOTOR NO. 4 DRIVER
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 65

IDLE AIR CONTROL MOTOR (NGC) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K60 18YL/BK IAC RETURN
2 K39 18GY/RD IAC MOTOR CONTROL
IGNITION COIL (5.9L) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 A142 16DG/OR AUTO SHUT DOWN RELAY OUTPUT
2 K19 18BK/GY IGNITION COIL NO. 1 DRIVER
IGNITION COIL-LEFT (8.0L)-3WAY
CAV CIRCUIT FUNCTION
1 K17 18DB/TN IGNITION COIL NO. 8 DRIVER
2 A142 14DG.OR AUTO SHUT DOWN RELAY OUTPUT
3 K32 18YL/GY IGNITION COIL NO. 4 DRIVER
IGNITION COIL-RIGHT (8.0L)-4WAY
CAV CIRCUIT FUNCTION
1 K19 18BK/GY IGNITION COIL NO. 1 DRIVER
2 A142 14DG/OR AUTO SHUT DOWN RELAY OUTPUT
3 K18 18RD/YL IGNITION COIL NO. 3 DRIVER
4 K43 18DG/GY IGNITION COIL NO. 6 DRIVER
8W - 80 - 66 8W-80 CONNECTOR PIN-OUTSDR

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 C1 - GRAY 26 WAY
CAV CIRCUIT FUNCTION
1 F35 18RD FUSED B(+)
2 Y200 18TN/VT DOOR LOCK DRIVER RIGHT DOORS
3 Y204 18OR/WT BTSI SOLENOID CONTROL
4- -
5- -
6- -
7- -
8- -
9- -
10 G10 20LG/RD SEAT BELT SWITCH SENSE
11 Y156 18TN/WT DOOR UNLOCK DRIVER RIGHT DOORS
12 Y201 18TN/OR DOOR UNLOCK DRIVER LEFT REAR
13 Z105 18TN/BK GROUND
14 F35 18RD FUSED B(+)
15 Y157 18TN/PK DOOR LOCK DRIVER LEFT DOORS
16 - -
17 X3 20BK/RD HORN SWITCH SENSE
18 G75 20TN DRIVER DOOR AJAR SWITCH SENSE
19 G77 20VT/OR LEFT REAR DOOR AJAR SWITCH SENSE
20 G76 20TN/YL RIGHT REAR DOOR AJAR SWITCH SENSE
21 G74 20TN/RD PASSENGER DOOR AJAR SWITCH SENSE
22 - -
23 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
24 G26 20LB KEY-IN IGNITION SWITCH SENSE
25 P55 18DB DOOR UNLOCK DRIVER LEFT FRONT
26 - -
INSTRUMENT CLUSTER C2 - GRAY 16 WAY
CAV CIRCUIT FUNCTION
1 Y109 20VT/OR WASH/BEAM SELECT SWITCH FEED
2 P96 20WT/LG PASSENGER DOOR LOCK SWITCH MUX
3 P97 20WT/DG DRIVER DOOR LOCK SWITCH MUX
4 Y111 20VT/WT PANEL LAMPS DIMMER SIGNAL
5 Y126 20VT/YL HEADLAMP SWITCH RETURN
6 G72 20DG/OR PASSENGER CYLINDER LOCK SWITCH MUX
7 G73 20LG/OR DRIVER CYLINDER LOCK SWITCH MUX
8 Y110 20WT/VT TURN LAMPS SWITCH FEED
9- -
10 - -
11 V8 20VT INTERMITENT WIPER SWITCH SENSE
12 X20 20GY/WT (PREMIUM) RADIO CONTROL MUX
13 - -
14 Y193 20YL/RD TRANS RANGE SENSOR MUX
15 - -
16 - -
8W - 80 - 68 8W-80 CONNECTOR PIN-OUTSDR

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

INTEGRATED POWER MODULE C7 - GRAY 26 WAY
CAV CIRCUIT FUNCTION
1 T40 14BR STARTER MOTOR RELAY OUTPUT
2 V3 16BR/WT WIPER RELAY LOW SPEED OUTPUT
3 Y105 20BR/RD FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
4 F235 18RD FUSED B(+)
5- -
6 Y171 18WT/DG LEFT LOW BEAM DRIVER
7 Y168 18WT/LB RIGHT HIGH BEAM DRIVER
8- -
9 A64 16DG/WT FUEL PUMP RELAY OUTPUT
10 - -
11 K51 20DB/YL AUTO SHUT DOWN RELAY CONTROL
12 K127 18DB/OR (CALIFORNIA) OXYGEN SENSOR DOWNSTREAM RELAY CONTROL
13 - -
14 - -
15 Y170 18WT/LG LEFT HIGH BEAM DRIVER
16 Y153 18DB/RD ADJUSTABLE PEDAL RELAY OUTPUT
17 - -
18 - -
19 K31 20BR -
20 L39 18LB (FOG LAMPS) FOG LAMP RELAY OUTPUT
21 A41 16YL FUSED IGNITION SWITCH OUTPUT (START)
22 Y169 18WT/TN RIGHT LOW BEAM DRIVER
23 T24 20BR/YL (EXCEPT NGC) PARK/NEUTRAL POSITION SWITCH SENSE (T41)
23 T752 18DG/OR (NGC)
24 E1 20TN FUSED B(+)
25 A141 18DG/WT (EXCEPT NGC) FUSED AUTO SHUT DOWN RELAY OUTPUT
26 - -
KNOCK SENSOR (3.7L) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 K73 18YL/BK KNOCK SENSOR NO. 1 SIGNAL
2 K4 18BK/LB SENSOR GROUND
3 K74 18BR/VT KNOCK SENSOR NO. 2 SIGNAL
4 K4 18BK/LB SENSOR GROUND
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 73