2003 Ford Pickup F150

2003 FORD MOTOR CO. F150

2003 FORD MOTOR CO.

F150

BUZZERS, RELAYS & TIMERS

BUZZERS, RELAYS & TIMERS LOCATION
Component Location
ACC Delay Relay In central junction box.
A/C Clutch Relay In battery junction box.
Battery Saver Relay In central junction box.
Bi-Fuel Power Relay In left rear of engine compartment.
Blower Motor Relay In auxiliary relay box No. 4.
Charge Air Cooler Pump Relay In battery junction box.
Cold Start Heater Relay (CNG/LPG) In right side of engine compartment.
Crash Fuel Shutoff Relay In right side of engine compartment.
Daytime Running Lamp No. 1 Relay In auxiliary relay box No. 2.
Daytime Running Lamp No. 2 Relay In auxiliary relay box No. 2.
Fog Lamp Relay In battery junction box.
Fuel Pump Cut-Off Relay (CNG/LPG) In bi-fuel relay module.
Fuel Pump High/Low Relay (CNG/LPG) In auxiliary relay box No. 1.
Fuel Pump Relay In battery junction box.
Headlamp Relay In auxiliary relay box No. 3.
Horn Relay In battery junction box.
Indicator Flasher Relay In auxiliary relay box No. 4.
Interior Lamp Relay In central junction box.
Left Mirror Turn Signal Relay In auxiliary relay box No. 5.
Mechanical Shift On The Fly Relay In auxiliary relay box No. 3.
One Touch Window Relay In central junction box.
Park Lamp Relay In auxiliary relay box No. 3.
PCM Power Relay In battery junction box.
Rear Window Defrost Relay In battery junction box.
Right Mirror Turn Signal Relay In auxiliary relay box No. 5.
Starter Motor Relay (4.2L) In right rear of engine compartment. See Fig. 1 .
Starter Motor Relay (4.6L) In right rear of engine compartment. See Fig. 2 .
Starter Motor Relay (5.4L) In right rear of engine compartment. See Fig. 3 .
Trailer Tow Battery Charge Relay In battery junction box.
Trailer Tow Parking Lamp Relay In battery junction box.
Trailer Tow Reversing Lamp Relay In battery junction box.
Transfer Case Electric Clutch Relay In auxiliary relay box No. 3.
Windshield Washer Relay In battery junction box.

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 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

Wiper High/Low Relay In battery junction box.

Wiper Run/Park Relay In battery junction box.

CIRCUIT PROTECTION DEVICES

CIRCUIT PROTECTION DEVICES LOCATION
Component Location
Auxiliary Relay Box No. 1 In left side of engine compartment.
Auxiliary Relay Box No. 2 Behind right side of dash.
Auxiliary Relay Box No. 3 Behind right center of dash.
Auxiliary Relay Box No. 4 Behind center of dash.
Auxiliary Relay Box No. 5 Behind right center of dash.
Battery Junction Box (4.2L) In left side of engine compartment. See Fig. 1 .
Battery Junction Box (4.6L) In left side of engine compartment. See Fig. 2 .
Battery Junction Box (5.4L) In left side of engine compartment. See Fig. 3 .
Central Junction Box Under left side of dash. See Fig. 4 .

CONTROL UNITS
CONTROL UNITS LOCATION
Component Location
ABS Control Module In left side of engine compartment.
Alternative Fuel Control Module On right side of engine compartment.
Belt Minder Module Behind left side of dash.
Bi-Fuel Relay Module (CNG/LPG) On left rear of engine compartment.
Central Security Module Behind left side of dash.
Central Timer Module Behind left side of dash. See Fig. 4 .
Compuvalve Module (CNG/LPG) In right rear of engine compartment.
Driver Heated Seat Module Under driver's seat.
Electronic Automatic Temperature Control Module Behind center of dash.
Front Blower Motor Speed Controller Behind right side of dash.
Fuel Pump Module Inside fuel pump assembly.
Generic Electronic Module Behind left side of dash. See Fig. 4 .
Intake Manifold Runner Control Module (4.2L) On top rear of engine.
NGV Module On right front of engine compartment.
Passenger Heated Seat Module Under passenger's seat.
Passive Anti-Theft System Transceiver Module Behind left center of dash. See Fig. 4 .
Powertrain Control Module (4.2L) On right side of engine compartment. See Fig. 1 .
Powertrain Control Module (4.6L) On right side of engine compartment. See Fig. 2 .
Powertrain Control Module (5.4L) On right side of engine compartment. See Fig. 3 .
Rear Seat Entertainment Module In floor console.
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Restraints Control Module Behind lower center of dash. See Fig. 4 .

Roof Opening Panel Motor Assembly In roof panel.
Transfer Case Relay Module Behind center of dash. See Fig. 4 .

MOTORS
MOTORS LOCATION
Component Location
Adjustable Pedal Motor Behind lower left side of dash.
Blend Door Actuator Behind center of dash. See Fig. 4 .
Blower Motor On right side of engine compartment.
Charge Air Cooler Pump Motor Lower left front of engine compartment.
Fuel Pump Assembly At fuel tank.
Roof Opening Panel Motor Assembly In roof panel.
Sliding Rear Window Motor At rear of cab.
Windshield Washer Pump Motor On right side of engine compartment.
Windshield Wiper Motor (4.2L) Behind center of dash panel. See Fig. 1 .
Windshield Wiper Motor (4.6L) Behind center of dash panel. See Fig. 2 .
Windshield Wiper Motor (5.4L) Behind center of dash panel. See Fig. 3 .

SENDING UNITS & SENSORS

SENDING UNITS & SENSORS LOCATION
Component Location
Ambient Air Temperature Sensor In right side of engine compartment.
Autolamp Sensor On top right side of dash.
Barometric Absolute Pressure Sensor On rear of engine.
Camshaft Position Sensor (4.2L) On front of engine. See Fig. 1 .
Camshaft Position Sensor (4.6L) On front of left cylinder head. See Fig. 2 .
Camshaft Position Sensor (5.4L) On front of left cylinder head. See Fig. 3 .
Crankshaft Position Sensor (4.2L) On lower front of engine. See Fig. 1 .
Crankshaft Position Sensor (4.6L) On lower front of engine. See Fig. 2 .
Crankshaft Position Sensor (5.4L) On lower front of engine. See Fig. 3 .
Cylinder Head Temperature Sensor (4.2L) On rear of left cylinder head. See Fig. 1 .
Cylinder Head Temperature Sensor (4.6L) On top front of engine. See Fig. 2 .
Cylinder Head Temperature Sensor (5.4L) On top front of engine. See Fig. 3 .
Differential Pressure Feedback EGR Sensor (4.2L) On right side of engine. See Fig. 1 .
Differential Pressure Feedback EGR Sensor (4.6L) On left side of engine. See Fig. 2 .
Differential Pressure Feedback EGR Sensor (5.4L) On left side of engine. See Fig. 3 .
Differential Speed Sensor On rear axle.
Digital Transmission Range Sensor On left side of transmission.
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Engine Fuel Temperature Sensor On top of engine.

Fuel Tank Pressure Transducer Sensor At fuel tank.
Fuel Tank Temperature Sensor (CNG/LPG) At fuel tank.
Fuel Tank Temperature Sensor (NGV) At fuel tank.
Heated Oxygen Sensor No. 11 (4.2L) On engine exhaust pipe. See Fig. 1 .
Heated Oxygen Sensor No. 11 (4.6L) On engine exhaust pipe. See Fig. 2 .
Heated Oxygen Sensor No. 11 (5.4L) On engine exhaust pipe. See Fig. 3 .
Heated Oxygen Sensor No. 12 On engine exhaust pipe.
Heated Oxygen Sensor No. 21 (4.2L) On engine exhaust pipe. See Fig. 1 .
Heated Oxygen Sensor No. 21 (4.6L) On engine exhaust pipe. See Fig. 2 .
Heated Oxygen Sensor No. 21 (5.4L) On engine exhaust pipe. See Fig. 3 .
Heated Oxygen Sensor No. 22 On engine exhaust pipe.
Injection Pressure Sensor On top of engine.
Intake Air Temperature Sensor (4.2L) On air intake. See Fig. 1 .
Intake Air Temperature Sensor (4.6L) On air intake. See Fig. 2 .
Intake Air Temperature Sensor (5.4L) On air intake. See Fig. 3 .
Intake Air Temperature Sensor 2 (5.4L) On top of engine.
Knock Sensor (4.2L) On right side of engine. See Fig. 1 .
Knock Sensor (4.6L) On right side of engine. See Fig. 2 .
Knock Sensor (5.4L) On right side of engine. See Fig. 3 .
Mass Airflow Sensor (4.2L) In air cleaner assembly. See Fig. 1 .
Mass Airflow Sensor (4.6L) In air cleaner assembly. See Fig. 2 .
Mass Airflow Sensor (5.4L) In air cleaner assembly. See Fig. 3 .
Output Shaft Speed Sensor On left side of transmission.
Sunload Sensor On top right side of dash.
Throttle Position Sensor (4.2L) On throttle body. See Fig. 1 .
Throttle Position Sensor (4.6L) On throttle body. See Fig. 2 .
Throttle Position Sensor (5.4L) On throttle body. See Fig. 3 .
Transfer Case Speed Sensor At left rear of transmission.
Turbine Shaft Speed Sensor At left rear of transmission.
4WABS Wheel Sensor (Left Front) (4.2L) Behind left front wheel. See Fig. 1 .
4WABS Wheel Sensor (Left Front) (4.6L) Behind left front wheel. See Fig. 2 .
4WABS Wheel Sensor (Left Front) (5.4L) Behind left front wheel. See Fig. 3 .
4WABS Wheel Sensor (Left Rear) Behind left rear wheel.
4WABS Wheel Sensor (Right Front) (4.2L) Behind right front wheel. See Fig. 1 .
4WABS Wheel Sensor (Right Front) (4.6L) Behind right front wheel. See Fig. 2 .
4WABS Wheel Sensor (Right Front) (5.4L) Behind right front wheel. See Fig. 3 .
4WABS Wheel Sensor (Right Rear) Behind right rear wheel.

SOLENOIDS & SOLENOID VALVES

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 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

SOLENOIDS & SOLENOID VALVES LOCATION

Component Location
A/C Compressor Clutch Solenoid (4.2L) In left front of engine compartment. See Fig. 1 .
A/C Compressor Clutch Solenoid (4.6L) In right front of engine compartment. See Fig. 2 .
A/C Compressor Clutch Solenoid (5.4L) In right front of engine compartment. See Fig. 3 .
Canister Vent Solenoid In rear of vehicle, near fuel tank.
EGR Vacuum Regulator Solenoid (4.2L) On right side of engine. See Fig. 1 .
EGR Vacuum Regulator Solenoid (4.6L) On left side of engine. See Fig. 2 .
EGR Vacuum Regulator Solenoid (5.4L) On left side of engine. See Fig. 3 .
EVAP Canister Purge Valve (4.2L) In left rear corner of engine compartment. See Fig. 1 .
EVAP Canister Purge Valve (4.6L) In left rear corner of engine compartment. See Fig. 2 .
EVAP Canister Purge Valve (5.4L) In left rear corner of engine compartment. See Fig. 3 .
Forward In-Bed Fuel Tank Valve (CNG/LPG) At fuel tank.
Front Tank Valve (CNG/LPG) Near fuel tank.
Fuel Rail Cut-Off Valve On fuel rail.
Idle Air Control Valve (4.2L) On left side of intake manifold. See Fig. 1 .
Idle Air Control Valve (4.6L) On left side of intake manifold. See Fig. 2 .
Idle Air Control Valve (5.4L) On left side of intake manifold. See Fig. 3 .
Intake Manifold Communicator Control (4.6L) On right side of engine.
Intake Manifold Communicator Control (5.4L) On left side of engine. See Fig. 3 .
Intake Manifold Runner Control (4.2L) On right side of engine. See Fig. 1 .
Midship Fuel Tank Valve Under left side of vehicle.
Rear In-Bed Fuel Tank Valve (CNG/LPG) At fuel tank.
Shift Lock Actuator In steering column. See Fig. 4 .
Supercharger By-Pass Solenoid On rear of engine.
4x2 Center Axle Disconnect Solenoid (4.2L) On right side of engine compartment. See Fig. 1 .
4x2 Center Axle Disconnect Solenoid (4.6L) On right side of engine compartment. See Fig. 2 .
4x2 Center Axle Disconnect Solenoid (5.4L) On right side of engine compartment. See Fig. 3 .
4x4 Center Axle Disconnect Solenoid (4.2L) On right side of engine compartment. See Fig. 1 .
4x4 Center Axle Disconnect Solenoid (4.6L) On right side of engine compartment. See Fig. 2 .
4x4 Center Axle Disconnect Solenoid (5.4L) On right side of engine compartment. See Fig. 3 .

SWITCHES
SWITCHES LOCATION
Component Location
A/C Clutch Cycling Pressure Switch (4.2L) In right rear of engine compartment. See Fig. 1 .
A/C Clutch Cycling Pressure Switch (4.6L) In right rear of engine compartment. See Fig. 2 .
A/C Clutch Cycling Pressure Switch (5.4L) In right rear of engine compartment. See Fig. 3 .
A/C High Pressure Switch (4.2L) In right side of engine compartment. See Fig. 1 .
A/C High Pressure Switch (4.6L) In right side of engine compartment. See Fig. 2 .
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A/C High Pressure Switch (5.4L) In right side of engine compartment. See Fig. 3 .
Brake Fluid Level Indicator Switch (4.2L) On brake fluid reservoir. See Fig. 1 .
Brake Fluid Level Indicator Switch (4.6L) On brake fluid reservoir. See Fig. 2 .
Brake Fluid Level Indicator Switch (5.4L) On brake fluid reservoir. See Fig. 3 .
Brake Pedal Position Switch Under left side of dash. See Fig. 4 .
Brake Pressure Switch (4.2L) In left rear corner of engine compartment. See Fig. 1 .
Brake Pressure Switch (4.6L) In left rear corner of engine compartment. See Fig. 2 .
Brake Pressure Switch (5.4L) In left rear corner of engine compartment. See Fig. 3 .
Clutch Pedal Position Switch On clutch pedal arm. See Fig. 4 .
Engine Oil Pressure Switch (4.2L) On left front of engine. See Fig. 1 .
Engine Oil Pressure Switch (4.6L) On left front of engine. See Fig. 2 .
Engine Oil Pressure Switch (5.4L) On left front of engine. See Fig. 3 .
Inertia Fuel Shut-Off Switch Behind right kick panel. See Fig. 4 .
Park Brake Switch On right side of parking brake lever.
Reversing Lamp Switch (M/T) On left side of transmission.
Seat Belt Switch In driver's seat belt buckle.
Transmission Control Switch At end of transmission selector lever.
4x4 Low & High Indicator Switch On left side of transmission.

MISCELLANEOUS
MISCELLANEOUS LOCATION
Component Location
A/C Compressor Clutch Diode In battery junction box.
Blower Motor Resistor Near blower motor.
Cold Start Heater On compuvalve.
Cold Start Heater Diode Right rear of engine compartment.
Data Link Connector Near center of dash. See Fig. 4 .
Daytime Running Lamps Resistor (4.2L) In left front of engine compartment. See Fig. 1 .
Daytime Running Lamps Resistor (4.6L) In left front of engine compartment. See Fig. 2 .
Daytime Running Lamps Resistor (5.4L) In left front of engine compartment. See Fig. 3 .
Ignition Transformer Capacitor No. 1 (4.2L) On rear of ignition coil. See Fig. 1 .
Ignition Transformer Capacitor No. 1 (4.6L) On top right of engine. See Fig. 2 .
Ignition Transformer Capacitor No. 1 (5.4L) On top left of engine. See Fig. 3 .
Ignition Transformer Capacitor No. 2 (4.6L) On top left front of engine. See Fig. 2 .
Ignition Transformer Capacitor No. 2 (5.4L) On top right of engine. See Fig. 3 .
PCM Power Diode In battery junction box.
Speed Control Servo (4.2L) In left side of engine compartment. See Fig. 1 .
Speed Control Servo (4.6L) In left side of engine compartment. See Fig. 2 .
Speed Control Servo (5.4L) In left side of engine compartment. See Fig. 3 .
Tank Valve Diode Near fuel tank.
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CONNECTORS
CONNECTORS LOCATION
Component Location
C110 (Gray, 38 Pin) At right rear of engine compartment.
C133 (Black, 42 Pin) At right rear of engine compartment.
C134 (Black, 4 Pin) At right rear of engine compartment.
C139 (Black, 16 Pin) At right rear of engine compartment.
C140 (Gray, 40 Pin) At left rear of engine compartment.
C144 (Brown, 40 Pin) At left rear of engine compartment.
C145 (Black, 12 Pin) At left rear of engine compartment.
C146 (4.2L) (Gray, 16 Pin) At left rear of engine compartment.
C146 (4.6L) (Gray, 16 Pin) At left rear of engine compartment.
C146 (5.4L) (Black, 16 Pin) At left rear of engine compartment.
C192 (Black, 40 Pin) At left rear of engine compartment.
C210 (Black, 8 Pin) At right front footwell.
C211 (Black, 16 Pin) At right front footwell.
C212 (Gray, 16 Pin) At left front footwell.
C213 (Gray, 6 Pin) Behind right side of dash.
C214 (Black, 8 Pin) Behind right side of dash.
C215 (Black, 16 Pin) At right front footwell.
C219 (Black, 8 Pin) At right front footwell.
C237 (Gray, 6 Pin) On steering column.
C238 (Gray, 66 Pin) Behind center of dash.
C248 (Gray, 16 Pin ) At left front footwell.
C260 (Gray, 8 Pin) At left rocker panel.
C263 (Black, 16 Pin) At right front footwell.
C268 (Gray, 3 Pin) Behind left side of dash.
C275 (Black, 20 Pin) Below center console.
C300 (Black, 4 Pin) Driver seat.
C311 (Black, 4 Pin) Passenger seat.
C312 (Gray, 2 Pin) In right front footwell.
C313 (Gray, 2 Pin) In right front footwell.
C314 (Gray, 2 Pin) Behind rear seats.
C315 (Gray, 8 Pin) At rear of vehicle underbody.
C316 (Gray, 4 Pin) At right front footwell.
C328 (Black, 20 Pin) Under passenger seat.
C340 (Black, 14 Pin) Under center console.
C405 (Black, 8 Pin) Under left side of vehicle underbody.
C406 (8 Pin) At right rear of engine compartment.
C408 (2 Pin) At right rear of engine compartment.
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C410 (Gray, 10 Pin) At right rear of engine compartment.

C411 (Black, 12 Pin) At left side of vehicle underbody.
C421 (Gray, 10 Pin) At right rear of engine compartment.
C422 (Black, 10 Pin) At right rear of engine compartment.
C423 (Black, 4 Pin) At right side of engine compartment.
C431 (2 Pin) At right rear side of engine compartment.
C432 (8 Pin) At right rear side of engine compartment.
C438 (1 Pin) At right rear side of engine compartment.
C495 (Red, 3 Pin) At left rear side of engine compartment.
C919 (Gray, 3 Pin) At front of roof.
C922 (Gray, 3 Pin) In roof panel.
C925 (Gray, 3 Pin) At front of roof.
C934 (Gray, 6 Pin) In roof panel.
C935 (Brown, 6 Pin) In roof panel.
C1010 (4 Pin) At left rear of engine compartment.
C1019 (Black, 16 Pin) On top right side of engine.
C1026 (8 Pin) On top right side of engine.
C1033 (Black, 4 Pin) At front of engine compartment.
C1046 (Gray, 4 Pin) At right front of vehicle exterior.
C1047 (Black, 8 Pin) At left front of engine compartment.
C3050 (Gray, 4 Pin) Behind rear seats.
C4001 (Gray, 2 Pin) At left rear of engine compartment.
C4002 (Black, 6 Pin) At left rear of engine compartment.
C4004 (Black, 4 Pin) At left rear of engine compartment.
C4013 (3 Pin) Behind right side of dash.
C4131 (4 Pin) At rear of vehicle underbody.

GROUNDS
GROUNDS LOCATION
Component Location
G100 At right rear of engine.
G101 At right rear of engine compartment.
G102 At right rear of engine compartment.
G103 At right front side of vehicle exterior.
G104 At left front of engine compartment.
G105 At right side of main chassis member.
G106 At left front of engine compartment.
G107 At right rear of engine compartment.
G108 At right front of engine compartment.
G109 At right rear of engine.
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G200 In right front footwell.

G201 In left front footwell.
G202 In left front footwell.
G203 In right front footwell.
G400 At vehicle rear end.
G4001 At right front of engine compartment.

SPLICES
SPLICES LOCATION
Component Location
S100 Engine control sensor harness, at right rear of engine compartment.
S101 Engine control sensor harness, at right rear of engine compartment.
S102 Engine control sensor harness, at right rear of engine compartment.
S104 Engine control sensor harness, near breakout to G103.
S105 Engine control sensor harness, at left rear of engine compartment.
S106 Engine control sensor harness, near breakout to G104.
S108 Engine control sensor harness, at left rear of engine compartment.
S109 Engine control sensor harness, at left rear of engine compartment.
S112 Engine control sensor harness, at left rear of engine compartment.
S113 Engine control sensor harness, at left rear of engine compartment.
S114 Engine control sensor harness, near breakout to G104.
S115 Engine control sensor harness, at left rear of engine compartment.
S116 Engine control sensor harness, at left rear of engine compartment.
S117 Fuel charge wiring harness, at right rear of engine compartment.
S120 Engine control sensor harness, at left rear of engine compartment.
S125 Heater blower motor harness, behind right side of dash.
S127 Engine control sensor harness, at left side of vehicle underbody.
S129 (4.2L) Fuel charge wiring harness, at right rear of engine compartment.
S129 (4.6L) Engine control sensor & fuel charge wiring harness, at top rear of engine.
S129 (5.4L) Engine control sensor & fuel charge wiring harness, at top rear of engine.
S130 Engine control sensor harness, at left rear of engine compartment.
S131 (4.2L) Fuel charge wiring harness, at top front of engine.
S131 (4.6L) Engine control sensor & fuel charge wiring harness, at top rear of engine.
S131 (5.4L) Engine control sensor & fuel charge wiring harness, at top rear of engine.
S135 Engine control sensor & fuel charge wiring harness, at top rear of engine.
S136 Fuel charge wiring harness, at rear of engine compartment.
S137 Engine control sensor harness, at right rear of engine compartment.
S138 Engine control sensor harness, near breakout to G101.
S139 Engine control sensor harness, at left rear of engine compartment.
S140 Back-up light switch to rear lamp feed harness, at right rear of engine compartment.
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S141 Back-up light switch to rear lamp feed harness, at right rear of engine compartment.
S142 Engine control sensor harness, at left side vehicle underbody.
S143 Engine control sensor harness, at left side vehicle underbody.
S144 Engine control sensor harness, near breakout to G104.
S146 Engine control sensor harness, near breakout to C144.
S147 Engine control sensor harness, near breakout to G104.
S148 Engine control sensor harness, near breakout to C146.
S149 Engine control sensor harness, at left rear side of engine compartment.
S151 Engine control sensor harness, near breakout to C145.
S153 Fuel charge wiring harness, near breakout to C133.
S154 (CNG) Back-up light switch to rear lamp feed harness, near breakout to C110.
S154 (4.2L) Fuel charge wiring harness, near breakout to C133.
S154 (4.6L) Engine control sensor & fuel charge harness, at top rear of engine.
S154 (5.4L) Engine control sensor & fuel charge harness, at top rear of engine.
S155 Engine control sensor harness, at left rear of engine compartment.
S156 Engine control sensor harness, at left rear of engine compartment.
S157 Engine control sensor harness, at left rear of engine compartment.
S158 Engine control sensor harness, at right front of engine compartment.
S159 Engine control sensor harness, at left rear of engine compartment.
S160 Engine control sensor harness, near breakout to C192.
S161 Engine control sensor & fuel charge harness, at right side of engine compartment.
S162 Engine control sensor & fuel charge harness, at left side of engine compartment.
S170 Engine control sensor harness, near breakout to C140.
S171 Engine control sensor harness, at left front of engine compartment.
S172 Engine control sensor harness, at left front of engine compartment.
S175 Engine control sensor harness, at right front of engine compartment.
S177 Engine control sensor harness, at right rear of engine compartment.
S179 Engine control sensor harness, at right rear of engine compartment.
S181 Engine control sensor harness, at left side vehicle underbody.
S183 Fuel injector jumper harness, at top of engine.
S185 Fuel injector jumper harness, in breakout to C1019.
S187 Fuel injector jumper harness, near breakout to C1019.
S189 Engine control sensor harness, at left side vehicle underbody.
S191 Engine control sensor harness, near breakout to C192.
S197 Engine control sensor & fuel charge harness, at rear of engine compartment.
S198 Engine control sensor harness, at right rear of engine compartment.
S199 Engine control sensor & fuel charge harness, near breakout to C133.
S200 Main wiring harness, near glove box.
S201 Main wiring harness, behind center of dash.
S202 Main wiring harness, near breakout to auxiliary relay box No. 4.
S203 Main wiring harness, behind right side of dash.
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S204 Main wiring harness, behind left side of dash.

S205 Main wiring harness, behind left side of dash.
S207 Main wiring harness, near breakout to G202.
S208 Main wiring harness, near breakout to G202.
S209 Main wiring harness, near breakout to G202.
S210 Main wiring harness, behind right side of dash.
S211 Main wiring harness, behind right side of dash.
S212 Main wiring harness, near steering column.
S213 Main wiring harness, at center of dash.
S214 Main wiring harness, near breakout to C263.
S215 Main wiring harness, near steering column.
S217 Main wiring harness, in breakout to C275.
S218 Main wiring harness, under dash, near steering column.
S219 Main wiring harness, behind center of dash.
S220 Body main wiring harness, near breakout to C260.
S221 Main wiring harness, under dash, near steering column.
S222 Main wiring harness, behind left side of dash.
S224 Main wiring harness, behind left side of dash.
S225 Main wiring harness, behind left side of dash.
S226 Main wiring harness, near breakout to C248.
S227 Main wiring harness, behind left side of dash.
S228 Main wiring harness, under dash, near steering column.
S229 Main wiring harness, behind left side of dash.
S230 Main wiring harness, near glove box.
S231 Main wiring harness, behind left side of dash.
S232 Main wiring harness, behind left side of dash.
S233 Main wiring harness, behind center of dash.
S234 Body main wiring harness, near steering column.
S235 Body main wiring harness, near steering column.
S236 Main wiring harness, behind left side of dash.
S237 Main wiring harness, under dash, near steering column.
S238 Main wiring harness, under dash, near steering column.
S239 Body main wiring harness, at right front footwell.
S240 Main wiring harness, near glove box.
S241 Main wiring harness, under dash, near steering column.
S242 Main wiring harness, near steering column.
S243 Body main wiring harness, at right front footwell.
S244 Main wiring harness, under dash, near steering column.
S245 Main wiring harness, behind right side of dash.
S246 Main wiring harness, near breakout to C192.
S247 Main wiring harness, near breakout to C192.
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S248 Body main wiring harness, behind left side of dash.

S252 Window regulator wiring harness, near breakout to C248.
S255 Main wiring harness, at right front footwell.
S257 Main wiring harness, behind right side of dash.
S259 Main wiring harness, behind center of dash.
S260 Body main wiring harness, at right front footwell.
S261 Body main wiring harness, at right front footwell.
S265 Main wiring harness, under dash, near steering column.
S268 Main wiring harness, behind left side of dash.
S269 Main wiring harness, near glove box.
S270 Main wiring harness, under dash, near steering column.
S271 Body main wiring harness, near steering column.
S272 Body main wiring harness, near steering column.
S273 Body main wiring harness, near steering column.
S274 Main wiring harness, under dash, near steering column.
S286 Main wiring harness, behind right center of dash.
S289 Main wiring harness, behind center of dash.
S290 Main wiring harness, near steering column.
S291 Main wiring harness, under dash, near steering column.
S292 Main wiring harness, under dash, near steering column.
S297 Main wiring harness, behind left side of dash.
S298 Main wiring harness, under dash, near steering column.
S301 Fuel tank sender harness, near breakout to C315.
S302 Fuel tank sender harness, near breakout to C315.
S303 Fuel tank sender harness, near breakout to C315.
S304 Right seat belt retractor switch harness, at right "B" pillar.
S305 Right seat belt retractor switch harness, at right "B" pillar.
S306 Passenger or, driver seat jumper harness, under driver seat.
S307 Console panel wiring harness, under console.
S311 Right seat belt retractor switch harness, at right "B" pillar.
S313 Console panel wiring harness, under console.
S320 Right seat belt retractor switch harness, at right "B" pillar.
S321 Passenger or, driver seat jumper harness, near breakout to C311.
S322 Console panel wiring harness, under console.
S330 Interior illumination wiring harness, near breakout to C275.
S341 Taillight wiring harness, under left side of vehicle rocker panel.
S342 Right seat belt retractor switch harness, near breakout to C925.
S343 Right seat belt retractor switch harness, at right "B" pillar.
S350 Interior illumination wiring harness, near breakout to C275.
S351 Interior illumination wiring harness, near breakout to C275.
S353 Right seat belt retractor switch harness, at right "B" pillar.
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April-25-08 10:25:14 AM Page 12 © 2005 Mitchell Repair Information Company, LLC.
 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

S360 Interior illumination wiring harness, near breakout to C340.

S361 Interior illumination wiring harness, near breakout to C340.
S362 Interior illumination wiring harness, near breakout to C340.
S372 Console panel wiring harness.
S373 Console panel wiring harness.
S374 Console panel wiring harness.
S375 Console panel wiring harness.
S376 Console panel wiring harness.
S377 Console panel wiring harness.
S378 Console panel wiring harness.
S379 Console panel wiring harness.
S400 Taillight wiring harness, at rear of vehicle underbody.
S401 Rear lamp connector wiring harness, at vehicle rear.
S403 Rear lamp connector wiring harness, at vehicle rear.
S405 Rear lamp connector wiring harness, near breakout to C405.
S406 Trailer lamp feed wiring harness, near breakout to C405.
S407 Trailer lamp feed wiring harness, near breakout to C405.
S408 Trailer lamp feed wiring harness, near breakout to C405.
S409 At vehicle rear.
S500 Body main wiring harness, in driver door.
S501 Body main wiring harness, near steering column.
S503 Body main wiring harness, in driver door.
S600 Body main wiring harness, in passenger door.
S601 Body main wiring harness, behind left side of dash.
S602 Body main wiring harness, behind left side of dash.
S900 Right seat belt retractor switch harness, near breakout to C919.
S901 Interior illumination wiring harness, near breakout to C922.
S902 Interior illumination wiring harness, at front of roof.
S903 Interior illumination wiring harness, near breakout to C922.
S904 Right seat belt retractor switch harness, near breakout to C919.
S911 High mounted stoplight wiring harness, in roof panel, center of vehicle.
S920 Interior illumination wiring harness, in roof panel.
S921 Interior illumination wiring harness, in roof panel.
S1001 Starter motor relay & battery ground harness, at right front of engine compartment.
S1002 Starter motor relay & battery ground harness, at right front of engine compartment.
S1003 Engine control sensor harness, near breakout to C140.
S4001 In wiring harness, near breakout to C421.
S4003 In wiring harness, near breakout to C432.
S4004 In wiring harness, near breakout to C432.
S4005 In wiring harness, at center of vehicle underbody.
S4006 In wiring harness, near breakout to C406.
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April-25-08 10:25:14 AM Page 13 © 2005 Mitchell Repair Information Company, LLC.
 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

S4007 In wiring harness, near breakout to C421.

S4008 In wiring harness, near breakout to C421.
S4009 In wiring harness, near breakout to C421.
S4010 In wiring harness, near breakout to C421.
S4011 In wiring harness, at rear of vehicle underbody.
S4012 In wiring harness, at rear of vehicle underbody.
S4013 In wiring harness, near breakout to C421.
S4014 In wiring harness, near breakout to C421.
S4015 In wiring harness, at right rear of engine compartment.
S4016 In wiring harness, at right rear of engine compartment.
S4017 In wiring harness, near breakout to C421.
S4018 In wiring harness, near breakout to C431.
S4019 In wiring harness, near breakout to C431.
S4020 In wiring harness, near breakout to C432.
S4021 In wiring harness, near breakout to C432.
S4032 In wiring harness, near breakout to C432.
S4033 In wiring harness, near breakout to C432.
S4034 In wiring harness, near breakout to C421.
S4035 In wiring harness, near breakout to C421.
S4036 In wiring harness, near breakout to C421.
S4040 In wiring harness, near breakout to C421.

COMPONENT LOCATION GRAPHICS

NOTE: Figures may show multiple component locations. Refer to appropriate table for
proper figure references.

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April-25-08 10:25:14 AM Page 14 © 2005 Mitchell Repair Information Company, LLC.
 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

Fig. 1: Engine Compartment (4.2L)

Courtesy of FORD MOTOR CO.

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April-25-08 10:25:14 AM Page 15 © 2005 Mitchell Repair Information Company, LLC.
 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

Fig. 2: Engine Compartment (4.6L)

Courtesy of FORD MOTOR CO.

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April-25-08 10:25:14 AM Page 16 © 2005 Mitchell Repair Information Company, LLC.
 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

Fig. 3: Engine Compartment (5.4L)

Courtesy of FORD MOTOR CO.

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April-25-08 10:25:14 AM Page 17 © 2005 Mitchell Repair Information Company, LLC.
 2003 Ford Pickup F150
2003 FORD MOTOR CO. F150

Fig. 4: Dash
Courtesy of FORD MOTOR CO.

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April-25-08 10:25:14 AM Page 18 © 2005 Mitchell Repair Information Company, LLC.