2006 DODGE RAM SRT-10 wiring

RAIL - FUEL
DESCRIPTION
The fuel injector rail is used to mount the fuel injectors to the engine.
OPERATION
High pressure from the fuel pump is routed to the fuel rail. The fuel rail then supplies the necessary fuel to each
individual fuel injector.
A quick-connect fitting with a safety latch clip is used to attach the fuel linetothefuelrail.
The fuel rail is not repairable.
CAUTION: The left and right sections of the fuel rail are connected with either a flexible connecting hose, or
joints. Do not attempt to separate the rail halves at these connecting hoseor joints. Due to the design of
the connecting hose or joint, it does not use any clamps. Never attempt to install a clamping device of any
kind to the hose or joint. When removing the fuel rail assembly for any reason, be careful not to bend or
kink the connecting hose or joint.
REMOVAL
3.7L V-6
WARNING: The fuel system is under constant pressure even with engine off. Before servicing fuel rail, fuel
system pressure must be released.
CAUTION: The left and right fuel rails are replaced as an assembly. Do not attempt to separate rail halves
at connector tubes. Due to design of tubes, it does not use any clamps. Neverattempt to install a clamping
device of any kind to tubes. When removing fuel rail assembly for any reason, be careful not to bend or
kink tubes.
1. Remove fuel tank filler tube cap.
2. Perform Fuel System Pressure Release Procedure.
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE)
3. Remove negative battery cable at battery.
4. Remove air duct at throttle body air box.
5. Remove air box at throttle body.
6. Remove air resonator mounting bracket at front of
throttle body (2 bolts).
7. Disconnect fuel line latch clip and fuel line at fuel
rail. A special tool will be necessary for fuel line
disconnection. (Refer to 14 - FUEL SYSTEM/FUEL
DELIVERY/QUICK CONNECT FITTING - STAN-
DARD PROCEDURE)
8. Remove necessary vacuumlines at throttle body.
9. Disconnect electrical connectors at all 6 fuel injec-
tors. To remove connector refer to. Push red col-
ored slider away from injector (1). While pushing
slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
10. Disconnect electrical connectors at all throttle body sensors.

11. Remove 6 ignition coils. (Refer to 8 - ELECTRICAL/IGNITION CONTROL/IGNITION COIL - REMOVAL)
12. Remove 4 fuel rail mounting bolts (1).
13. Gently rock and pullleftside of fuel rail until fuel
injectors just start to clear machined holes in cyl-
inder head. Gently rock and pullrightside of rail
until injectors just start to clear cylinder head
holes. Repeat this procedure (left/right) until all
injectors have cleared cylinder head holes.
14. Remove fuel rail (with injectors attached) from
engine.
15. If fuel injectors are to be removed, (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - REMOVAL).
4.7L V-8
WARNING: The fuel system is under constant pressure even with engine off. Before servicing fuel rail, fuel
system pressure must be released.
CAUTION: The left and right fuel rails are replaced as an assembly. Do not attempt to separate rail halves
at connector tubes. Due to design of tubes, it does not use any clamps. Neverattempt to install a clamping
device of any kind to tubes. When removing fuel rail assembly for any reason, be careful not to bend or
kink tubes.
1. Remove fuel tank filler tube cap.
2. Perform Fuel System Pressure Release Procedure.
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE)
3. Remove negative battery cable at battery.
4. Remove air duct at throttle body air box.
5. Remove air box at throttle body.
6. Remove air resonator mounting bracket at front of
throttle body (2 bolts).
7. Disconnect fuel line latch clip and fuel line at fuel
rail. A special tool will be necessary for fuel line
disconnection. (Refer to 14 - FUEL SYSTEM/FUEL
DELIVERY/QUICK CONNECT FITTING - STAN-
DARD PROCEDURE)
8. Remove necessary vacuumlines at throttle body.
9. Disconnect electrical connectors at all 8 fuel injec-
tors. To remove connector refer to. Push red col-
ored slider away from injector (1). While pushing
slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.

1. Remove fuel tank filler tube cap.
2. Perform fuel system pressure release procedure.
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE)
3. Remove negative battery cable at battery.
4. Remove flex tube (air cleaner housing to engine).
5. Remove air resonator box at throttle body.
6. Disconnect electrical connectors at all 8 fuel injec-
tors. Push red colored slider away from injector (1).
While pushing slider, depress tab (2) and remove
connector (3) from injector. The factory fuel injec-
tion wiring harness is numerically tagged (INJ 1,
INJ 2, etc.) for injector position identification. If har-
ness is not tagged, note wiring location before
removal.
7. Disconnect electrical connectors at all throttle body
sensors.
8. Disconnect fuel supply tube quick connect fitting at
the fuel rail, (Refer to14 - FUEL SYSTEM/FUEL
DELIVERY/QUICK CONNECT FITTING - STAN-
DARD PROCEDURE).
9. Remove four fuel rail mounting bolts (1) and hold-
down clamps.
10. Gently rock and pullleftside of fuel rail until fuel
injectors just start to clear machined holes in
intake manifold. Gently rock and pullrightside of
rail until injectors just start to clear intake manifold
head holes. Repeat this procedure (left/right) until
all injectors have cleared machined holes.
11. Remove fuel rail (with injectors attached) from
engine.
12. If fuel injectors are to be removed, (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - REMOVAL).

6. Remove the wiring harness from the wiring clips
under the throttle body.
7. Disconnect the electrical connector from the fuel
injectors.
8. Disconnect the fuel line quick connector.

6. Connect the electrical connector to the MAP sensor and Coolant Temperature sensor.
7. Connect the electrical connector to the TPS and Idle Air Control.
8. Install the wiring harness to the wiring clips under the throttle body.
9. Connect fuel supply tube to fuel rail. Refer to Quick Connect Fittings inthe Fuel Delivery section.
10. Install the negative battery cable.
11. Install the air cleaner assembly, refer to the Engine/Air Intake System/Air Cleaner Housing for more information.
12. Use the DRBIII
scan tool ASD Fuel System Test to pressurize the fuel system. Check for leaks.

INJECTOR - FUEL
DESCRIPTION
An individual fuel injector (1) is used for each individ-
ual cylinder.
OPERATION
FUEL INJECTOR
The top (fuel entry) end of the injector (1) is attached
into an opening on the fuel rail.
The fuel injectors are electrical solenoids. The injector
contains a pintle that closes off an orifice at the nozzle
end. When electric current is supplied to the injector,
the armature and needle move a short distance
against a spring, allowing fuel to flow out the orifice.
Because the fuel is under high pressure, a fine spray
is developed in the shape of a pencil stream. The
spraying action atomizes the fuel, adding it to the air
entering the combustion chamber.
The nozzle (outlet) ends of the injectors are positioned
into openings in the intake manifold just above the
intake valve ports of the cylinder head. The engine
wiring harness connector for each fuel injector is
equipped with an attached numerical tag (INJ 1, INJ 2 etc.). This is used to identify each fuel injector.
The injectors are energized individually in a sequential order by the Powertrain Control Module (PCM). The PCM will
adjust injector pulse width by switching the ground path to each individual injector on and off. Injector pulse width is
the period of time that the injector isenergized. The PCM will adjust injector pulse width based on various inputs it
receives.
Battery voltage is supplied to the injectors through the ASD relay.
The PCM determines injector pulse width based on various inputs.
PCM OUTPUT
The nozzle ends of the injectors are positioned into openings in the intakemanifold just above the intake valve ports
of the cylinder head. The engine wiring harness connector for each fuel injector is equipped with an attached
numerical tag (INJ 1, INJ 2 etc.). This is used to identify each fuel injector with its respective cylinder number.
The injectors are energized individually in a sequential order by the Powertrain Control Module (PCM). The PCM will
adjust injector pulse width by switching the ground path to each individual injector on and off. Injector pulse width is
the period of time that the injector isenergized. The PCM will adjust injector pulse width based on various inputs it
receives.

5. Disconnect the electrical connector to the TPS and
Idle Air Control.
6. Remove the wiring harness from the wiring clips
under thew throttle body.
7. Disconnect the electrical connector from the fuel
injectors.

12. Remove the fuel injector from the fuel rail.
INSTALLATION
3.7/ 4.7/ 5.7L
1. Install fuel injector(s) into fuel rail assembly and install retainingclip(s).
2. If same injector(s) is being reinstalled, install new O-ring(s).
3. Apply a small amount of clean engine oil to each injector O-ring. This will aid in installation.
4. Install fuel rail. (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL RAIL - INSTALLATION)
5. Start engine and check for fuel leaks.
8.3L - SRT-10
1. Install the fuel injectors to the fuel rail.
2. Install fuel rail under throttle body.
3. Apply a light coating of clean engine oiltotheO-ringonthenozzleendofeach injector.
4. Insert fuel injector nozzles into openings in intake manifold. Seat theinjectors in place. Tighten fuel rail bolts to
12 Nꞏm (105 in. lbs.).
5. Attach electrical connectors to fuel injectors.
6. Connect the electrical connector to the MAP sensor and Coolant Temperature sensor.
7. Connect the electrical connector to the TPS and Idle Air Control.
8. Install the wiring harness to the wiring clips under the throttle body.
9. Connect fuel supply tube to fuel rail. Refer to Quick Connect Fittings inthe Fuel Delivery section
10. Install the negative battery cable and install the battery cover.
11. Install the air cleaner assembly, refer to the Engine/Air Intake System/Air Cleaner Housing for more information.
12. Use the DRBIII
scan tool ASD Fuel System Test to pressurize the fuel system. Check for leaks.