ford 4.6l engine wiring harness

8
4.6L harness This page is about 1996-2004 Mustang 4.6L Air EFI systems. If you would like to learn how to build your own EFI harness you will need to know: How to Solder What Wire Sizes to Use How Relays Work How the EEC Computer Connector Comes Apart Then study the wiring diagrams, computer pin out charts, and assemble your own harness. If you want to purchase a BRAND NEW EFI harness or buy parts for your harness project; Please visit our PRODUCTS PAGE Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88 1 of 8 6/9/2010 8:41 PM

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This page is about 1996-2004 Mustang 4.6L Air EFI systems. Also applies to 2004-2008 F150, except for the drive-by-wire system

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Page 1: Ford 4.6L Engine Wiring Harness

4.6L harness

This page is about 1996-2004 Mustang 4.6L Air EFI systems.

If you would like to learn how to build your own EFI harness you will need to know:

How to Solder

What Wire Sizes to Use

How Relays Work

How the EEC Computer Connector Comes Apart

Then study the wiring diagrams, computer pin out charts, and assemble your own harness.

If you want to purchase a BRAND NEW EFI harness or buy parts for your harness project;

Please visit our PRODUCTS PAGE

Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

1 of 8 6/9/2010 8:41 PM

Page 2: Ford 4.6L Engine Wiring Harness

PIN 1996-98 4.6L 1999-01 4.6L

1 Coil on Plug #6

2 MIL

3 GND

13 DLC PWR pin 13 DLC PWR pin 13

15 DLC (-) pin 10 DLC (-) pin 10

16 DLC (+) pin 2 DLC (+) pin 2

21 Crank Sensor (+) Crank Sensor (+)

22 Crank Sensor (-) Crank Sensor (-)

23 L Knock Sensor (-) (DOHC only)

24 GND

25 GND GND

26 Coil #1 (cyl 1 & 6) Coil on Plug #1

27 Coil on Plug #5

32 L Knock Sensor (DOHC only) R Knock Sensor (-) (DOHC only)

33 GND

36 MAF RTN MAF RTN

38 ECT ECT

39 ACT ACT

40 FPM FPM

46 E-Fan High E-Fan High

48 Tach

Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

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Page 3: Ford 4.6L Engine Wiring Harness

51 GND GND

52 Coil #2 (cyl 3 & 5) Coil on Plug #3

53 Coil on Plug #4

55 KAM PWR KAM PWR

57 R Knock Sensor (DOHC only) R Knock Sensor (+) (DOHC only)

58 VSS

60 R HEGO R HEGO

68 VSS

71 PWR PWR

72 Injector #7 Injector #7

73 Injector #5 Injector #5

74 Injector #3 Injector #3

75 Injector #1 Injector #1

76 GND

77 GND GND

78 Coil #3 (cyl 4 & 7) Coil on Plug #7

79 Coil on Plug #8

80 FP Relay FP Driver

83 IAB IAB

85 CAM Sensor CAM Sensor

87 L HEGO L HEGO

88 MAF MAF

89 TPS TPS

90 V-REF V-REF

91 SIG-RTN SIG-RTN

93 RF HEGO Heater GND RF HEGO Heater GND

94 LF HEGO Heater GND LF HEGO Heater GND

97 PWR PWR

98 Injector #8 Injector #8

99 Injector #6 Injector #6

100 Injector #4 Injector #4

101 Injector #2 Injector #2

102 L Knock Sensor (+) (DOHC only)

103 GND GND

104 Coil #4 (cyl 2 & 8 ) Coil on Plug #2

4.6L EFI Ingition Circuits:

Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

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Page 4: Ford 4.6L Engine Wiring Harness

4.6L EFI Harness Power circuit:

Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

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Page 5: Ford 4.6L Engine Wiring Harness

EFI Relay 1 EFI Relay 2 Fuel Pump Relay Fan Relay WOT Relay

Pin 30 Constant +12 Volts from Battery protected by Fuse

Pin 85 Ground Ground EEC Pin 80 EEC Pin 46 EEC Pin 69

Pin 86 +12 Volts from Ignition Switch (Hot in Run and Start)

Pin 87

EEC 71/97

Ck Engine Light

Fuel Injectors

Idle Air Bypass

Ignition Coils

MAF Sensor

HEGO Sensors

Alternator

Fuel Pump

FPM (EEC Pin 40)Electric Fan -

Pin 87a - A/C Compressor

Data Link Connector:

Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

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Page 6: Ford 4.6L Engine Wiring Harness

Automatic Transmission:

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Page 7: Ford 4.6L Engine Wiring Harness

Search:

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2 Digit Self-Test Codes

Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

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Page 8: Ford 4.6L Engine Wiring Harness

3 Digit Self-Test Codes

EEC Program Codes

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Reference Books

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Ford Fuel Injection » 4.6L harness http://fordfuelinjection.com/?p=88

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