Ford F150 Pickup. Manual — part 1352

Fig. 3: Identifying PCM Harness Connector Terminals (150-Pin - Focus 2.3L)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline

Fig. 4: Identifying PCM Harness Connector Terminals (150-Pin - All Others)
Courtesy of FORD MOTOR CO.

SENSORS & SWITCHES

ACCELERATOR PEDAL POSITION SENSOR

See TEST DK: ELECTRONIC THROTTLE CONTROL & ACCELERATOR PEDAL POSITION
SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for
Accelerator Pedal Position (APP) sensor testing procedures and specifications.

NOTE:

For additional sensor testing specifications, see SENSOR OPERATING RANGE
CHARTS article.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline

AIR CONDITIONING EVAPORATOR TEMPERATURE SENSOR

See TEST DJ: AIR CONDITIONING EVAPORATOR TEMPERATURE SENSOR under SYSTEM
TESTS in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for Air Conditioning Evaporator
Temperature (ACET) sensor testing procedures and specifications.

AIR CONDITIONING PRESSURE SENSOR

See TEST DS: AIR CONDITIONING PRESSURE SENSOR under SYSTEM TESTS in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for Air Conditioning Pressure (ACP) sensor
testing procedures and specifications.

BAROMETRIC PRESSURE SENSOR

See TEST DQ: BAROMETRIC PRESSURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS -
CNG, FLEX-FUEL & GASOLINE article for Barometric Pressure (BARO) sensor testing procedures and
specifications.

BRAKE PEDAL APPLIED/BRAKE PEDAL POSITION SWITCH

See TEST FD: BRAKE PEDAL POSITION SWITCH under SYSTEM TESTS in SELF-DIAGNOSTICS -
CNG, FLEX-FUEL & GASOLINE article for testing procedures and specifications.

CAMSHAFT POSITION SENSOR

See TEST DR: CAMSHAFT POSITION SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS -
CNG, FLEX-FUEL & GASOLINE article for Camshaft Position (CMP) sensor testing procedures and
specifications.

CLUTCH PEDAL POSITION SWITCH

See TEST TA: PARK/NEUTRAL POSITION OR CLUTCH PEDAL POSITION SWITCHES under
SYSTEM TESTS in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for testing procedures
and specifications.

CRANKSHAFT POSITION SENSOR

See TEST JD: CRANKSHAFT POSITION SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS -
CNG, FLEX-FUEL & GASOLINE article for Crankshaft Position (CKP) sensor testing procedures and
specifications.

CYLINDER HEAD TEMPERATURE SENSOR

See TEST DL: CYLINDER HEAD TEMPERATURE SENSOR under SYSTEM TESTS in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for Cylinder Head Temperature (CHT) sensor
testing procedures and specifications.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline

ENGINE COOLANT TEMPERATURE SENSOR

See TEST DA: TEMPERATURE SENSOR TEST (IAT, ECT & EOT) under SYSTEM TESTS in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for Engine Coolant Temperature (ECT) sensor
testing procedures and specifications.

ENGINE OIL TEMPERATURE SENSOR

See TEST DA: TEMPERATURE SENSOR TEST (IAT, ECT & EOT) under SYSTEM TESTS in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for Engine Oil Temperature (EOT) sensor testing
procedures and specifications.

ENGINE FUEL TEMPERATURE SENSOR

See TEST DB: ENGINE FUEL TEMPERATURE SENSOR under SYSTEM TESTS in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article for Engine Fuel Temperature (EFT) sensor testing
procedures and specifications.

FUEL RAIL PRESSURE SENSOR

See TEST DD: FUEL RAIL PRESSURE SENSOR under SYSTEM TESTS in SELF-DIAGNOSTICS -
CNG, FLEX-FUEL & GASOLINE article for Fuel Rail Pressure (FRP) sensor testing procedures and
specifications.

HEATED OXYGEN SENSOR

See TEST H: FUEL CONTROL under SYSTEM TESTS in SELF-DIAGNOSTICS - CNG, FLEX-FUEL &
GASOLINE article for Heated Oxygen Sensor (HO2S) testing procedures and specifications.

INERTIA FUEL SHUTOFF SWITCH

Ensure ignition is off. Locate Inertia Fuel Shutoff (IFS) switch. See INERTIA FUEL SHUTOFF SWITCH
LOCATIONS table. Shake or jar IFS switch to cause switch to open. IFS switch reset button should pop up.
Fuel pump should not operate and car should stall. Push down on reset button. Restart engine. Fuel pump
should operate.

INERTIA FUEL SHUTOFF SWITCH LOCATIONS

Application

Location

Aviator, Blackwood, Econoline, Escape, Excursion, Expedition,
Explorer, Mountaineer, Navigator, Pickup & Ranger

Behind Right Kick Panel

Crown Victoria, Grand Marquis, Marauder & Town Car

Left Front Side Of Luggage

Compartment, Behind Lining

Focus

Bottom Of Right "A" Pillar

LS

Behind Left Kick Panel

Mustang

In Left Rear Of Luggage

Compartment

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline