DODGE RAM 2003 Service Repair Manual

Component Page
Speaker-Right Instrument Panel....... 8W-80-97
Speaker-Right Rear................. 8W-80-97
Speed Control Servo................. 8W-80-97
Speed Control Switch-Left (ETC)....... 8W-80-98
Speed Control Switch-Left (Except ETC) . 8W-80-98
Speed Control Switch-Right (ETC)...... 8W-80-98
Speed Control Switch-Right (Except
ETC)........................... 8W-80-98
Switch-Driver Seat Belt.............. 8W-80-98
Switch-Passenger Airbag On-Off....... 8W-80-99
Tail/Stop/Turn Signal Lamp-Left....... 8W-80-99
Tail/Stop/Turn Signal Lamp-Right...... 8W-80-99
Tension Reducer-Seat Belt (Standard
Cab)........................... 8W-80-99
Tensioner-Left Seat Belt............. 8W-80-100
Tensioner-Right Seat Belt............ 8W-80-100
Throttle Position Sensor............. 8W-80-100
Throttle Position Sensor (Diesel)...... 8W-80-100
Trailer Tow Connector.............. 8W-80-101
Trailer Tow Connector-Add On........ 8W-80-101
Transfer Case Control Module C1...... 8W-80-101
Transfer Case Control Module C2...... 8W-80-102
Transfer Case Control Module C3...... 8W-80-102
Transfer Case Mode Sensor.......... 8W-80-102
Transfer Case Position Sensor (4.7L/
5.9L).......................... 8W-80-103
Transfer Case Selector Switch........ 8W-80-103
Transfer Case Shift Motor........... 8W-80-103
Transmission Control Module......... 8W-80-104Component Page
Transmission Range Sensor (5.9L/
Diesel)........................ 8W-80-105
Transmission Solenoid Assembly (5.9L/
8.0L).......................... 8W-80-105
Transmission Solenoid/Trs Assembly
(3.7L/4.7L/5.7L)................. 8W-80-106
Underhood Lamp.................. 8W-80-106
Vacuum Pump (Diesel).............. 8W-80-106
Vehicle Speed Sensor (Diesel)......... 8W-80-107
Vistronic Fan Drive (Diesel).......... 8W-80-107
Washer Fluid Level Switch........... 8W-80-107
Washer Pump Motor-Front........... 8W-80-107
Water In Fuel Sensor (Diesel)......... 8W-80-107
Wheel Speed Sensor-Left Front
(ABS)......................... 8W-80-108
Wheel Speed Sensor-Rear (ABS)....... 8W-80-108
Wheel Speed Sensor-Right Front
(ABS)......................... 8W-80-108
Wiper Motor-Front................. 8W-80-108
Washer Fluid Level Switch........... 8W-80-109
Washer Pump Motor-Front........... 8W-80-109
Water In Fuel Sensor (Diesel)......... 8W-80-109
Wheel Speed Sensor-Left Front
(ABS)......................... 8W-80-109
Wheel Speed Sensor-Rear (ABS)....... 8W-80-110
Wheel Speed Sensor-Right Front
(ABS)......................... 8W-80-110
Wiper Motor-Front................. 8W-80-110
8W - 80 - 4 8W-80 CONNECTOR PIN-OUTSDR

4WD SWITCH (MANUAL TRANSFER CASE) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K77 18BR/WT 4WD SWITCH SENSE
2 K4 18BK/LB SENSOR GROUND
A/C COMPRESSOR CLUTCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 C3 20DB/BK A/C CLUTCH RELAY OUTPUT
2 Z359 18BK/BR GROUND
A/C PRESSURE TRANSDUCER - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K6 18VT/WT (EXCEPT NGC) 5 VOLT SUPPLY
2 K7 18OR (NGC) 5-VOLT SUPPLY
3 C18 18DB A/C PRESSURE SIGNAL
4- -
A/C PRESSURE TRANSDUCER (DIESEL)-4WAY
CAV CIRCUIT FUNCTION
1 K55 18LB/WT MASS AIR FLOW SENSOR SIGNAL
2 K72 18DG/OR 5 VOLTS SUPPLY
3 C18 18DB A/C PRESSURE SIGNAL
4- -
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 5

A/C-HEATER CONTROL C1 - BLACK 16 WAY
CAV CIRCUIT FUNCTION
1 F15 20DB FUSED IGNITION SWITCH OUTPUT (RUN)
2 Z120 20WT/BK GROUND
3 C57 20DB/GY SENSOR GROUND
4 C33 20DB/RD MODE DOOR 2 DRIVER
5- -
6 C12 20LG/BK EVAPORATOR TEMPERATURE SENSOR SIGNAL
7- -
8 Y165 20OR/YL PANEL LAMPS DRIVER
9 C62 20DB/PK BLEND DOOR DRIVER
10 C35 20DG/YL MODE DOOR 1 DRIVER
11 C34 20DB/WT COMMON DOOR DRIVER
12 C32 20GY/DB RECIRCULATION DOOR DRIVER
13 C46 20YL/LG PASSENGER BLEND DOOR DRIVER
14 - -
15 C16 20LB/YL HEATED MIRROR RELAY CONTROL
16 D25 20VT/LG PCI BUS
A/C-HEATER CONTROL C2 - BLACK 10 WAY
CAV CIRCUIT FUNCTION
1- -
2 C4 16TN BLOWER MOTOR LOW DRIVER
3 C6 14LB BLOWER MOTOR M2 DRIVER
4- -
5 Z37 10BK/DB GROUND
6- -
7 C5 16LG BLOWER MOTOR M1 DRIVER
8- -
9- -
10 C7 10BK/TN BLOWER MOTOR HIGH DRIVER
ACCELERATOR PEDAL POSITION SENSOR (5.7L/DIESEL M/T NORMAL BUILD)-6WAY
CAV CIRCUIT FUNCTION
1 K81 20DB/DG APPS NO. 2 SIGNAL
2 K6 20VT/WT 5-VOLT SUPPLY
3 K7 20OR 5-VOLT SUPPLY
4 K981 20BR/DG APPS NO. 2 RETURN
5 K255 20WT/DG APPS NO. 1 SIGNAL
6 K223 20PK/DB APPS NO. 1 RETURN
8W - 80 - 6 8W-80 CONNECTOR PIN-OUTSDR

ADJUSTABLE PEDAL MOTOR - WHITE 2 WAY
CAV CIRCUIT FUNCTION
1 Y151 18LG/BR ADJUSTABLE PEDAL MOTOR (DOWN)
2 Y152 18LG/OR ADJUSTABLE PEDAL MOTOR (UP)
ADJUSTABLE PEDAL SWITCH - BLUE 6 WAY
CAV CIRCUIT FUNCTION
1 Y151 18LG/BR ADJUSTABLE PEDAL MOTOR (DOWN)
2 Y153 18DB/RD ADJUSTABLE PEDAL RELAY OUTPUT
3- -
4 Z154 18BK/BR GROUND
5 F15 20DB FUSED IGNITION SWITCH OUTPUT (RUN)
6 Y152 18LG/OR ADJUSTABLE PEDAL MOTOR (UP)
AIRBAG CONTROL MODULE - YELLOW 23 WAY
CAV CIRCUIT FUNCTION
1- -
2- -
3- -
4 Z6 18BK/PK GROUND
5 R45 18DG/LB DRIVER SQUIB 1 LINE 2
6 R43 18BK/LB DRIVER SQUIB 1 LINE 1
7 R42 18BK/YL PASSENGER SQUIB 1 LINE 1
8 R44 18DG/YL PASSENGER SQUIB 1 LINE 2
9 R53 18LG/YL RIGHT SEAT BELT TENSIONER LINE 2
10 R55 18LG/DG RIGHT SEAT BELT TENSIONER LINE 1
11 R56 18LB/DG LEFT SEAT BELT TENSIONER LINE 1
12 R54 18LB/YL LEFT SEAT BELT TENSIONER LINE 2
13 - -
14 F14 18LG/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
15 F23 18DB/YL FUSED IGNITION SWITCH OUTPUT (RUN)
16 - -
17 - -
18 - -
19 R4 18BR/YL PASSENGER AIRBAG MUX SWITCH RETURN
20 R5 18VT/YL PASSENGER AIRBAG MUX SWITCH SENSE
21 D25 20VT/DG PCI BUS
22 R166 18LG/TN PASSENGER AIRBAG INDICATOR DRIVER
23 - -
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 7

AIRBAG CONTROL MODULE-LEFT SIDE IMPACT - YELLOW 8 WAY
CAV CIRCUIT FUNCTION
1 F14 18LG/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
2 Z11 18BK/WT GROUND
3 R77 18LB/BR LEFT CURTAIN SQUIB 1 LINE 2
4 R75 18LB/OR LEFT CURTAIN SQUIB 1 LINE 1
5 Z11 18BK/WT GROUND
6- -
7- -
8 D25 20DB/VT PCI BUS
AIRBAG CONTROL MODULE-RIGHT SIDE IMPACT - YELLOW 8 WAY
CAV CIRCUIT FUNCTION
1 F14 18LG/YL FUSED IGNITION SWITCH OUTPUT (RUN-START)
2- -
3 R76 18LB/WT RIGHT CURTAIN SQUIB 1 LINE 2
4 R74 18LB/YL RIGHT CURTAIN SQUIB 1 LINE 1
5 Z29 18BK/PK GROUND
6- -
7- -
8 D25 20DB/VT PCI BUS
AIRBAG-DRIVER SQUIB 1 - YELLOW 2 WAY
CAV CIRCUIT FUNCTION
1 R45 BK DRIVER SQUIB 1 LINE 2
2 R43 BK DRIVER SQUIB 1 LINE 1
AIRBAG-LEFT CURTAIN SQUIB - YELLOW 2 WAY
CAV CIRCUIT FUNCTION
1 R75 18LB/OR LEFT CURTAIN SQUIB 1 LINE 1
2 R77 18LB/BR LEFT CURTAIN SQUIB 1 LINE 2
8W - 80 - 8 8W-80 CONNECTOR PIN-OUTSDR

AIRBAG-PASSENGER SQUIB 1 - YELLOW 2 WAY
CAV CIRCUIT FUNCTION
1 R42 18BK/YL PASSENGER SQUIB 1 LINE 1
2 R44 18DG/YL PASSENGER SQUIB 1 LINE 2
AIRBAG-RIGHT CURTAIN SQUIB - YELLOW 2 WAY
CAV CIRCUIT FUNCTION
1 R74 18LB/YL RIGHT CURTAIN SQUIB 1LINE 1
2 R76 18LB/WT RIGHT CURTAIN SQUIB 1 LINE 2
AMBIENT TEMPERATURE SENSOR-2WAY
CAV CIRCUIT FUNCTION
1 G31 20VT/LG (NGC) AAT SIGNAL
1 G31 20VT/LG AMBIENT TEMPERATURE SENSOR SIGNAL
2 Y137 20VT/LB SENSOR GROUND
2 K4 20VT/LB (NGC) SENSOR GROUND
AMPLIFIER AUDIO C1 - GRAY 12 WAY
CAV CIRCUIT FUNCTION
1 X53 20DG LEFT FRONT SPEAKER (+)
2 X55 20BR/RD LEFT FRONT SPEAKER (-)
3 X57 20BR/LB LEFT REAR SPEAKER (-)
4 Z115 18DB/BK GROUND
5 X60 20DG/RD RADIO 12 VOLT OUTPUT
6 X56 20DB/RD RIGHT FRONT SPEAKER (-)
7 X54 20VT RIGHT FRONT SPEAKER (+)
8 X51 20BR/YL LEFT REAR SPEAKER (+)
9 X58 20DB/OR RIGHT REAR SPEAKER (-)
10 X52 20DB/WT RIGHT REAR SPEAKER (+)
11 Z126 18BK/DB GROUND
12 D25 20VT/GY PCI BUS
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 9

AMPLIFIER AUDIO C2 - GRAY 18 WAY
CAV CIRCUIT FUNCTION
1 F75 18VT FUSED B(+)
2- -
3- -
4 X91 18WT/BK LEFT REAR SPEAKER (-)
5 X82 18LB/VT RIGHT FRONT DOOR SPEAKER (+)
6 X87 18LG/RD LEFT FRONT DOOR SPEAKER (+)
7 X84 18OR/BK RIGHT INSTRUMENT PANEL SPEAKER (+)
8 X83 18YL/RD LEFT INSTRUMENT PANEL SPEAKER (-)
9 F75 18VT FUSED B(+)
10 - -
11 - -
12 X93 18WT/RD LEFT REAR SPEAKER (+)
13 X92 18TN/BK RIGHT REAR SPEAKER (-)
14 X94 18TN/VT RIGHT REAR SPEAKER (+)
15 X80 18LB/BK RIGHT FRONT DOOR SPEAKER (-)
16 X85 18LG/DG LEFT FRONT DOOR SPEAKER (-)
17 X86 18OR/RD RIGHT INSTRUMENT PANEL SPEAKER (-)
18 X81 18YL/BK LEFT INSTRUMENT PANEL SPEAKER (+)
AUTOMATIC DAY/NIGHT MIRROR (EXCEPT BASE) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 Y107 20VT/RD FUSED IGNITION SWITCH OUTPUT (RUN-START)
2 Z104 20BK/OR GROUND
3 L1 20VT/BK BACK-UP LAMP FEED
BACKUP LAMP SWITCH (3.7L/4.7L/5.7L/8.0L) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 L1 18VT/BK BACK-UP LAMP FEED
2 L10 18BR/LG FUSED IGNITION SWITCH OUTPUT (RUN)
8W - 80 - 10 8W-80 CONNECTOR PIN-OUTSDR

BATTERY TEMPERATURE SENSOR - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K118 18PK/YL BATT TEMP SIGNAL
2 K4 18BK/LB SENSOR GROUND
BLEND DOOR ACTUATOR (SINGLE-ZONE)-2WAY
CAV CIRCUIT FUNCTION
1 C34 20DB/WT COMMON DOOR DRIVER
2 C62 20DB/PK BLEND DOOR DRIVER
BLOWER MOTOR-2WAY
CAV CIRCUIT FUNCTION
1 C7 10BK/TN BLOWER MOTOR HIGH DRIVER
2 C1 10DG BLOWER MOTOR FEED
BLOWER MOTOR RESISTOR BLOCK - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 C5 16LG BLOWER MOTOR M1 DRIVER
2 C7 12BK/TN BLOWER MOTOR HIGH DRIVER
3 C4 16TN BLOWER MOTOR LOW DRIVER
4 C6 14LB BLOWER MOTOR M2 DRIVER
BOOST PRESSURE SENSOR (DIESEL)-3WAY
CAV CIRCUIT FUNCTION
1 K72 18DG/OR 5 VOLTS SUPPLY
2 K9 18LB FUEL PRESSURE SENSOR 5 VOLT SUPPLY
3 K55 18LB/WT MASS AIR FLOW SENSOR SIGNAL
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 11

BRAKE FLUID LEVEL SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G9 20GY/BK BRAKE FLUID LEVEL SWITCH SENSE
2 Z231 20BK/DG GROUND
BRAKE LAMP SWITCH - BLACK 6 WAY
CAV CIRCUIT FUNCTION
1 A108 18TN/RD FUSED B(+)
2 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
3 V30 20DB/RD SPEED CONTROL BRAKE SWITCH OUTPUT
3 V30 20DB/RD (NGC) FUSED IGNITION SWITCH (RUN-START)
4 V32 20YL/RD SPEED CONTROL SUPPLY
4 V32 20YL/RD (5.7L) BRAKE SWITCH NO. 2 SIGNAL
5 Z241 20BK/VT GROUND
6 K29 20WT/PK BRAKE SWITCH SENSE
6 K29 20WT/PK (NGC) BRAKE SWITCH NO. 1 SIGNAL
BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Y204 18OR/WT BTSI SOLENOID CONTROL
2 Z123 18BK/OR GROUND
C100 (DIESEL) - (DASH TO ENGINE)
CAV CIRCUIT
A K152 28WT
B B6 20WT/DB
C B7 20WT
D Z11 18BK/WT
E-
F Y1 18LG
G K4 18BK/LB
H Y169 18WT/TN
J Y168 18WT/LB
K Y3 18WT
L L60 18LG/TN
M L7 18BK/YL
N F15 20DB
P Y5 18OR
R-
S K154 18GY
8W - 80 - 12 8W-80 CONNECTOR PIN-OUTSDR

C100 (DIESEL) - (ENGINE TO DASH)
CAV CIRCUIT
1 K152 18WT
2 B6 20WT/DB
3 B7 20WT
4 Z11 18BK/WT
5-
6 Y1 18LG
7 K4 18BK/LB
8 Y169 18WT/TN
9 Y168 18WT/LB
10 Y3 18WT
11 L60 18LG/TN
12 L7 18BK/YL
13 F15 20DB
14 Y5 18OR
15 -
16 K154 18GY
C100 (GAS) - BLACK (DASH TO ENGINE)
CAV CIRCUIT
1 V10 20BR (EXCEPT 8.0L)
2 B6 20WT/DB
3 B7 20WT
4 G29 20BK/TN (EXCEPT 8.0L)
5 Y137 20VT/LB (EXCEPT 8.0L)
6 Y169 18WT/TN
7 Y168 18WT/LB
8 L60 18LG/TN
9 L7 18BK/YL
10 -
C100 (GAS) - BLACK (ENGINE TO DASH)
CAV CIRCUIT
1 V10 20BR (EXCEPT 8.0L)
2 B6 20WT/DB
3 B7 20WT
4 G29 20BK/TN (EXCEPT 8.0L)
5 Y137 20VT/LB (EXCEPT 8.0L)
6 Y169 18WT/TN
7 Y168 18WT/LB
8 L60 18LG/TN
9 L7 18BK/YL
10 -
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 13