ENGINE PERFORMANCE > 5

12/11/2019

YMMS: 2003 Ford Expedition Engine: 5.4L Eng VIN:

ENGINE PERFORMANCE > 5.4L

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Dec 11, 2019 License: Odometer:



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Fig 1: 5.4L, Engine Performance Circuit (1 of 4)

HOT IN RUN OR START

HOT AT ALL TIMES

FUSE 27 5A

FUSE 28 5A

PCM POWER DIODE

2

1

5

3

PCM POWER RELAY

FUSE 32 15A

FUSE 33 20A

FUSE 34 20A

FUEL PUMP RELAY

HOT AT ALL TIMES

FUSE 5 7.5A

CENTRAL JUNCTION BOX

(RIGHT KICK PANEL)

HOT AT ALL TIMES

ACC

START

LOCK

RUN

OFF

IGNITION SWITCH

DK BLU/LT GRN 1

12 LT BLU/ORG

C270B DK GRN/YEL 11

C270B DK GRN/YEL 3

C270K RED/LT GRN 7

C270D DK BLU/LT GRN 3

C270G 4

RED/WHT C270B

10 RED

C270A

9 RED/YEL

8

C270F

6

GRY/YEL 14 C270B

GROUND A/C CLU RLY CTRL

TPS SIGNAL ST RLY CTRL

C FAN SPD CTRL GEN COMM CIR PRES SENSOR

THEFT IND CTRL GROUND GROUND

SERVO SIG C VSS+

GEN MONITOR BPS SWITCH OUTPUT

ST WHL CTRL GND PSP SIGNAL IAT INPUT

SW POER OUT

OD CANCEL SW GROUND

SERVO SIG B COOL FAN CTRL SIG

SERVO COMMON F PUMP RLY CTRL

MAF SIG RTN MAF OUTPUT

SCP BUS + SIGNAL RETURN ST AND RUN SIG

SERVO SIG A CANISTER VENT SPD CTRL SW IN

EVAP VALVE MODULE PROG SIG

BATTERY AC TERM SIGNAL

RX SIG TX SIG

SCP REF VOLTAGE ST AND RUN SIG

POWERTRAIN CONTROL MODULE (RIGHT SIDE OF ENGINE BULKHEAD)

1

BLK/WHT 570

2

PNK/YEL 331

3

PNK/ORG 1498

4

DK BLU/ORG 325

5

6

ORG/LT BLU 638

7

TAN/LT GRN 1930

8

RED/PNK 791

9

ORG/RED 1269

10 LT BLU/YEL 567

11 BLK/WHT 570

S108

12 VIO/YEL

1926

13 GRY/BLK 679

14 BRN/PNK 1931

15 BLK/YEL

307

16

17 DK GRN/ORG 848

18 YEL/LT GRN

328

19 GRY

743

20 DK GRN/YEL

238

21

22 TAN/WHT 224

23 BLK/WHT 570

24 PNK/BLK 1925

25 LT GRN/VIO 639

26 TAN

1927

27 LT BLU/ORG 926

28

29

30 TAN/LT BLU

968

31 LT BLU/RED

967

32 TAN/ORG 914

33 GRY/RED 359

34 RED

361

35 DK GRN/WHT 1924

36 VIO/WHT 91

37 LT BLU/BLK

151

38 LT GRN/BLK

191

39 VIO

107

40 RED/WHT 729

41 ORG/LT BLU

1932

42 GRY/ORG 1216

43 WHT/LT GRN 1215

44 PNK/LT BLU

915

45 BRN/WHT 351

46 RED

361

C175B

VIO/WHT

BLK

(RIGHT KICK PANEL) G200 BLK

S203

A/C SYSTEM TRANSMISSION SYSTEM STARTING SYSTEM

COOLING FAN SYSTEM CHARGING SYSTEM

ANTI-THEFT SYSTEM

BLK

G102

(RIGHT REAR OF ENGINE COMPT)

CHARGING SYSTEM

CRUISE CONTROL SYSTEM

CRUISE CONTROL SYSTEM

CRUISE CONTROL SYSTEM

COOLING FAN SYSTEM

CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM

A/C SYSTEM ANTI-THEFT SYSTEM

(ENGINE SENSOR HARN, NEAR BREAKOUT

TO %%UC1373) S111

(ENGINE SENSOR HARN, NEAR BREAKOUT TO %%UC1373) S110

BLK

S133

NAVIGATION, WIPER/WASHER, AND SOUND SYSTEMS (VEHICLE SPEED SIGNAL)

(LEFT B-PILLAR)

G300 INSTUMENT CLUSTER SYSTEM

S454

1 RED/LT GRN

2 VIO/WHT

3 YEL/LT GRN 4

GRY 5

RED/YEL

6 RED

7 TAN/LT BLU 8 LT BLU/RED

9 RED

10 VIO/WHT

11 LT GRN/BLK

12 RED

NCA 1 YEL/WHT NCA 4 BLK/ORG

NCA 3 BLK

NCA 2 PNK/BLK

1 DK GRN/YEL 2 PNK/BLK

1 BRN/WHT 3 RED/PNK 2 GRY/RED 10 PNK/LT BLU 13 VIO 2 TAN/ORG

1 TAN/WHT 2 GRY/YEL

165743

OVERDRIVE CANCEL SWITCH

NCA NCA

FUEL TANK PRESSURE TRANSDUCER

SENSOR (IN FUEL

DATA LINK CONNECTOR

(UNDER DRIVER SIDE DASH PANEL)

INERTIA FUEL SHUT-OFF SWITCH (REAR END

OF VEHICLE)

M

-

+

FUEL PUMP ASSEMBLY (FUEL TANK)



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Fig 2: 5.4L, Engine Performance Circuit (2 of 4)

RED/ LT GRN

IGNITION TRANSFORMER CAPACITOR 1

RED/ LT GRN

S132

S129

RED/ LT GRN

S124

RED/ LT GRN

RED/ LT GRN

1

RED/ LT GRN

1

RED/ LT GRN

1

RED/ LT GRN

1

RED/ LT GRN

1

RED/ LT GRN

1

RED/ LT GRN

1

RED/ LT GRN

1

COILS ON PLUG

1

2

3

4

5

6

7

8

IGNITION TRANSFORMER CAPACITOR 2

2

LT GRN/ WHT

2

PNK/ WHT

2

WHT/ PNK

2

DK GRN/

VIO

2

LT GRN/

YEL

2

ORG/ YEL

2

PNK/ LT

BLU

2

WHT/ RED

VIO/WHT 2 RED/YEL 1

(ABOVE REAR AXLE)

EVAP CANISTER VENT CONTROL

SOLENOID

RED/LT GRN 1

VIO/WHT 2

YEL/LT GRN 3

GRY 4

RED/YEL 5

RED 6

TAN/LT BLU 7

LT BLU/RED 8

RED 9

VIO/WHT 10

LT GRN/BLK 11

PNK/WHT 1

WHT/RED 2

PNK/LT BLU 3

DK GRN/VIO 4

WHT/PNK 5

GRY/RED 6

DK BLU 7

VIO/WHT 8

LT GRN/YEL 9

LT GRN/WHT 10

RED/YEL 11

RED/YEL 12

GRY/RED 13

GRY 14

RED 15

GRY/WHT 16

ORG/YEL 17

BRN/LT GRN 18

LT BLU 19

RED 20

BRN 21

BRN/WHT 22

LT GRN/BLK 23

RED 24

RED 12

NCA S108

BLK/WHT G102

(RIGHT REAR OF ENGINE COMPT) 165744

(ENGINE CRTL HARN, NEAR BREAKOUT TO %%UC129) S125

S127 (ENGINE CTRL HARN, NEAR BREAKOUT TO

C187)

RED 25

RED/YEL 26

GRY/RED 27

GRY/RED 28

2 DK BLU 1 GRY 1 GRY 2 GRY/RED 5 LT BLU/RED 4 TAN/LT BLU 3 BLK/WHT 2 RED

2 BRN 1 RED/YEL 2 2 GRY/RED 1 3 BRN/LT GRN 3 1 BRN/WHT 3 GRY/RED 2 GRY/WHT 1 BRN/WHT 1 GRY/RED 3 YEL/LT GRN 2 BRN/WHT

-+

CRANKSHAFT POSITION SENSOR (FRONT OF ENGINE)

INTAKE AIR

TEMPERATURE (IAT) SENSOR (IN INTAKE SYSTEM)

(EARLY) (LATE)

MASS AIRFLOW (MAF) SENSOR

(IN INTAKE SYSTEM)

INLET MANIFOLD RUNNER CONTROL

MODULE (4.6L)

(FRONT OF ENGINE)

DIFFERENTIAL PRESSURE FEEDBACK

EGR (DPFE) SENSOR (LEFT TOP OF ENGINE)

THROTTLE POSITION (TP) SENSOR (ON THROTTLE

BODY)

POWER STEERING PRESSURE

SWITCH (LEFT SIDE OF ENGINE COMPT)



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Fig 3: 5.4L, Engine Performance Circuit (3 of 4)

TRANSMISSION FLUID

TEMPERATURE SENSOR

ELECTRONIC PRESSURE CONTROL SOLENOID

4R70W TRANSMISSION

SHIFT SOLENOIDS

A

B

TORQUE CONVERTER

CLUTCH SOLENOID

ORG/BLK 8 GRY/RED 3 VIO/WHT 1 WHT/YEL 7 ORG/YEL 6 VIO/ORG 5

VIO/YEL 2

PNK/WHT 1

WHT/RED 2

PNK/LT BLU 3

DK GRN/VIO 4

WHT/PNK 5

GRY/RED 6

DK BLU 7

VIO/WHT 8

LT GRN/YEL 9

LT GRN/WHT 10

RED/YEL 11

RED/YEL 12

GRY/RED 13

GRY 14

RED 15

GRY/WHT 16

ORG/YEL 17

BRN/LT GRN 18

LT BLU 19

RED 20

BRN 21

BRN/WHT 22

LT GRN/BLK 23

RED 24

RED 25

RED/YEL 26

RED/YEL

A/C SYSTEM

S105 (NEAR BREAKOUT TO %%UC124)

RED

S109 (ENG CTRL SENSOR HARN, NEAR BREAKOUT TO %%UC1373)

GRY/RED 27

GRY/RED 28

2 LT GRN/BLK 1 RED/YEL 2 DK BLU/YEL 1 BRN/LT GRN 2 BRN/PNK 1 RED/YEL

WHT/LT BLU RED

165745

2

1

VAPOR MANAGEMENT

VALVE

(LEFT REAR SIDE OF

ENGINE COMPT)

OUTPUT SHAFT SPEED (OSS) SENSOR (REAR OF TRANSMISSION)

EGR VACUUM REGULATOR

SOLENOID (LEFT SIDE OF ENGINE)

IDLE AIR CONTROL (IAC) VALVE (ON THROTTLE

BODY)

BRN/

LT

BRN/

LT

TAN/ GRN/

TAN/

LT

TAN

WHT

YEL

BLU

BLK

ORG

RED

BLU

1

1

1

1

1

1

1

1

1

2

3

4

5

6

7

8

2 RED

2 RED

2 RED

2 RED

2 RED

2 RED

2 RED

2 RED

RED

RED

S131 (ENG CTRL SENSOR HARN, NEAR BREAKOUT TO %%UC194)

S126 (ENG CTRL SENSOR HARN, NEAR BREAKOUT TO C1066)

PNK/WHT 1

WHT/RED 2

PNK/LT BLU 3

WHT/LT BLU 4

TAN/BLK 5

LT GRN/ORG 6

TAN/RED 7

DK GRN/VIO 8

WHT/PNK 9

GRY/RED 10

LT BLU 11

BRN/YEL 12

DK BLU 13

VIO/WHT 14

BRN/LT BLU 15

LT GRN/YEL 16

LT GRN/WHT 17

TAN 18

RED/YEL 19

WHT 20

GRY/RED 21

GRY 22

BRN/PNK 23

VIO/WHT 24

GRY/WHT 25

ORG/YEL 26

RED/YEL 27

GRY/RED 28

ORG/YEL 29

VIO/ORG 30

BRN 31

BRN/WHT 32

BRN/LT GRN 33

VIO/YEL 34

ORG/BLK 35

GRY/RED 36

RED/YEL 37

WHT/YEL 38

DK BLU/YEL 39

BRN/LT GRN 40

GRY/RED 41

LT BLU 42

FUEL INJECTORS



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Fig 4: 5.4L, Engine Performance Circuit (4 of 4)

(LEFT FRONT OF ENGINE) CYLINDER

HEAD TEMPERATURE (CHT) SENSOR

(REAR OF ENGINE) KNOCK SENSOR

(5.4L)

(REAR OF ENGINE) KNOCK SENSOR

(4.6L)

NCA

NCA NCA

NCA NCA

NCA

GRY/RED 2 YEL/LT GRN 1

1

2

1

2

4

3

DK GRN/WHT

YEL/RED DK GRN/VIO

YEL/RED YEL

YEL

5.4L PNK/WHT 1 WHT/RED 2 PNK/LT BLU 3 WHT/LT BLU 4 TAN/BLK 5 LT GRN/ORG 6 TAN/RED 7 DK GRN/VIO 8 WHT/PNK 9 GRY/RED 10 LT BLU 11 BRN/YEL 12

DK BLU 13

VIO/WHT 14

BRN/LT BLU 15

LT GRN/YEL 16

LT GRN/WHT 17

TAN 18

RED/YEL 19

WHT 20

GRY/RED 21

GRY 22

BRN/PNK 23

VIO/WHT 24

GRY/WHT 25

ORG/YEL 26

RED/YEL 27

GRY/RED 28

ORG/YEL 29

VIO/ORG 30

BRN 31

BRN/WHT 32

BRN/LT GRN 33

VIO/YEL 34

ORG/BLK 35

GRY/RED 36

RED/YEL 37

WHT/YEL 38

DK BLU/YEL 39

BRN/LT GRN 40

GRY/RED 41

LT BLU 42

(NEAR BREAKOUT TO %%UC175T)

4.6L S140

S128

S138

1026 PNK/WHT

1

264

WHT/LT BLU

2

559 TAN/BLK

3

560 LT GRN/ORG

4

561 TAN/RED

5

562

LT BLU

6

557 BRN/YEL

7

558

BRN/LT BLU

8

COOLING FAN SYSTEM

1929 GRY/YEL

9

10

1029 WHT/RED 11

1027

PNK/LT BLU 12

367

BRN 13

555

TAN 14

556

WHT 15

16

17

18

19

388

YEL/LT BLU 20

387 RED/WHT 21

360 BRN/PNK 22

1030

DK GRN/VIO 23

1028 WHT/PNK 24

359 GRY/RED 25

74

GRY/LT BLU 26

94 RED/BLK 27

311

DK GRN/VIO 28

310 YEL/RED 29

349

DK BLU 30

795

DK GRN 31

32

352 BRN/LT GRN 33

1021

LT GRN/YEL 34

1024 LT GRN/WHT 35

351 BRN/WHT 36

37

38

1274 DK GRN/WHT 39

1273

YEL 40

350

GRY 41

42

43

355 GRY/WHT 44

1102 YEL/LT GRN 45

1025 ORG/YEL 46

C175E

1

393

VIO/LT GRN

2

392

RED/LT GRN

3

(PINS 4-10 NOT USED)

480

VIO/YEL 11

237 ORG/YEL 12

315 VIO/ORG 13

14

(NEAR

BREAKOUT

15

TO %%UC171)

16

199

LT BLU/YEL 17

1145

LT BLU/BLK 18

1143 WHT/BLK 19

1144

YEL/BLK 20

389 WHT/BLK 21

22

925 WHT/YEL 23

24

136

DK BLU/YEL 25

26

359 GRY/RED 27

923 ORG/BLK 28

390 TAN/YEL 29

(NEAR BREAKOUT TO %%UC175T)

30 C175T

COP 2 CTRL IAC CTRL INJ 5 CTRL INJ 6 CTRL INJ 7 CTRL INJ 8 CTRL INJ 3 CTRL INJ 4 CTRL ST AND RUN VOLTAGE

COP 8 CTRL COP 7 CTRL IMRC MODULE INJ 1 CTRL INJ 2 CTRL

HO2S 21 HTR HO2S 11 HTR EVR CTRL COP 4 CTRL COP 3 CTRL SIGNAL RETURN HO2S 11 INPUT HO2S 21 INPUT KS 2 + KS 1 + CKP + CMP INPUT

DPFE INPUT COP 5 CTRL COP 1 CTRL REFERENCE VOLTAGE

KS 2 KS 1 CKP -

TPS INPUT CYL HEAD TMP SNS COP 6 CTRL

HO2S 22 INPUT HO2S 12 INPUT

TCC SOLENOID SHIFT SOL A SHIFT SOL B

DTR, TR3A DTR, TR2 DTR, TR4 DTR, TR1 HO2S 12 HTR

EPC SOL CTRL

OSS SENSOR

SIGNAL RETURN TFT INPUT HO2S 22 HTR

POWERTRAIN CONTROL MODULE

(RIGHT SIDE OF ENGINE BULKHEAD)

GRY/RED RED/BLK RED/YEL YEL/LT BLU

LT BLU/YEL

YEL/BLK

LT BLU/BLK

GRY/RED VIO/LT GRN 1 VIO/WHT TAN/YEL

GRY/RED GRY/LT BLU RED/YEL RED/WHT

RED/LT GRN GRY/RED 1 VIO/WHT WHT/BLK

WHT/BLK

GRY/RED

1 LT BLU 2 DK GRN

NCA NCA NCA NCA

NCA NCA NCA NCA

NCA NCA NCA NCA

NCA NCA NCA NCA

165746

2

6

5

4

3

CAMSHAFT

POSITION HEATED OXYGEN

SENSOR

SENSOR

(ON FRONT OF ENGINE)

(HO2S) 12 (ON ENGINE

EXHAUST PIPE)

HEATED OXYGEN SENSOR (HO2S) 11

(ON ENGINE EXHAUST PIPE)

HEATED OXYGEN SENSOR (HO2S) 22

(ON ENGINE EXHAUST PIPE)

HEATED OXYGEN SENSOR (HO2S) 21

(ON ENGINE EXHAUST PIPE)

P RN

P

1

2R

D

N

P

1

2 D

RN

P

1

2R

D

N

1 2 D

DIGITAL TRANSMISSION RANGE SENSOR (LEFT SIDE OF TRANSMISSION)



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