wiring FORD MUSTANG 2003 Workshop Manual

28. Separate the harness from the fuel supply manifold studs in four places and remove the fuel
charging wiring harness from the vehicle.
29. To install, reverse the removal procedure. Klj . 7 ba
72003 Mustang Workshop Manual
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8. Disconnect the fuel pulse damper electrical connector and the vacuum hose.
9.
NOTE: RH shown, LH similar.
Disconnect the eight fuel injector electrical connectors.
10. Separate the fuel charging wiring harness from the fuel injection supply manifold in four places.
11. Remove the fuel supply manifold mounting studs. Klj . 2 ba
42003 Mustang Workshop Manual
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SPECIFICATIONS
SECTION 303-
04D: Fuel Charging and Controls — Mach I 4.6L (4V) 2003 Mustang Workshop Manual General Specifications
Item Specification
Fluid/Lubricant Specification
Super Premium SAE 5W-30, XO-5W30-
QSP WSS-
M2C153- G
Torque Specifications Description Nm lb-
ft lb-
in Battery ground bolt 10 — 89
Throttle body bolts 9 — 80
Fuel injection supply manifold bolts 10 — 89
42 pin engine bulkhead electrical connector bolt 6 — 53
Ignition coil cover bolts 10 — 89
Battery supply wire nut to power distribution box 8 — 71
Battery supply wire nut to generator 8 — 71
Air intake scoop bolts 25 18 —
Air intake scoop bracket bolt 25 18 —
Air intake scoop bracket nuts 25 18 —
Air intake scoop bracket throttle body nut 9 — 80
Exhaust gas recirculation (EGR) vacuum regulator solenoid bolts 10 — 89
Wiring harness bracket bolt 20 15 — Klj . 1 ba
22003 Mustang Workshop Manual
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DESCRIPTION AND OPERATION
Fuel Charging and Controls
The fuel injection supply manifold (9F792):
zdelivers fuel to the fuel injector.
z receives fuel from the fuel supply line.
The throttle body:
zcontrols air supply to the upper intake manifold by positioning the throttle plate.
z connects the accelerator cable and, if equipped, the speed control actuator cable to the throttle
lever.
z is not adjustable.
z cannot be cleaned.
The fuel injector:
zis electrically operated by the powertrain control module (PCM).
z has an internal solenoid that opens a needle valve to inject fuel into the lower intake manifold.
z atomizes the fuel as the fuel is delivered.
z is deposit- resistant. Do not clean.
The fuel pressure relief valve:
zis used to inspect and relieve fuel pressure. Fuel Charging Wiring Connections SECTION 303-
04D: Fuel Charging and Controls — Mach I 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
32003 Mustang Workshop Manual
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Item Part
Number Description
1 — Engine control sensor wiring 42 pin electrical
connector
2 — 16 pin electrical connector
3 — Engine control jumper harness electrical connector
4 — RH heated oxygen sensor (HO2S) electrical
connector
5 — Transmission main control harness electrical
connector.
6 — Fuel injector electrical connectors
7 — Heated positive crankcase ventilation (PCV) valve
electrical connector.
8 — Radio ignition interference capacitor electrical
connector
9 — Ignition coil electrical connectors
10 — Generator battery electrical connector
11 — Generator field electrical connector
12 — Engine coolant temperature (ECT) sensor
electrical connector
13 — Fuel pressure sensor electrical connector
14 — Exhaust vacuum regulator (EVR) electrical
connector
15 — Idle air control (IAC) electrical connector
16 — EGR backpressure transducer electrical connector
17 — Power distribution box battery feed electrical wire
18 — Camshaft position (CMP) sensor electrical
connector Klj . 2 ba
32003 Mustang Workshop Manual
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REMOVAL AND INSTALLATION
Wiring Harness
Removal
WARNING: Do not smoke or carry lighted tobacco or open flame of any type when
working on or near any fuel related components. Highly flammable mixtures are always present
and can ignite. Failure to follow these instructions can result in personal injury.
1. With the vehicle in neutral, position it on a hoist. For additional information, refer to Section 100 -
02 .
2. Disconnect the battery ground cable. For additional information, refer to Section 414 - 01 .
3. Remove the upper intake manifold. For additional information, refer to Section 303 - 01D .
4. Disconnect the following connectors: zThe 42 pin engine bulkhead electrical connector.
z The 16 pin electrical connector.
5. Separate the wiring harness from the dash panel.
6. Remove the RH ignition coil cover. zRemove the bolts.
z Remove the coil cover.
SECTION 303-
04D: Fuel Charging and Controls — Mach I 4.6L (4V) 2003 Mustang Workshop Manual Klj . 1 ba
112003 Mustang Workshop Manual
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11. Disconnect the transmission main control harness electrical connector.
12. Disconnect the engine control jumper harness electrical connector.
13. Remove the wiring harness bracket bolt.
14. Disconnect the RH heated oxygen sensor (HO2S) electrical connector. Klj . 3 ba
112003 Mustang Workshop Manual
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22. Remove the wiring harness.
zSeparate the wiring harness from the LH valve cover stud bolt.
z Separate the wiring harness from the power steering reservoir bracket.
Installation 1. Position the wiring harness: zInstall the wiring harness retainer onto the LH valve cover stud bolt.
z Install the wiring harness retainer into the power steering reservoir.
2. Connect the ECT sensor electrical connector.
3. Connect the CMP sensor electrical connector. Klj . 6 ba
112003 Mustang Workshop Manual
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8.
NOTE: LH side is shown, RH side is similar.
Connect the two radio ignition interference capacitor electrical connectors.
9. Connect the RH HO2S electrical connector.
10. Install the wiring harness bracket bolt.
11. Connect the engine control jumper harness electrical connector. Klj . 8 ba
112003 Mustang Workshop Manual
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16. Connect the RH ignition coil electrical connectors.
17. Install the RH ignition coil cover and bolts.
18. Install the wiring harness retainers into the dash panel.
19. Connect the following connectors:
zThe 42 pin engine bulkhead electrical connector.
z The 16 pin electrical connector. Klj . 10 ba
112003 Mustang Workshop Manual
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