Dodge ZB 2005 Service Manual page 807

14 - 34 FUEL INJECTION
FUEL INJECTORS (Continued)
(12) Remove the fuel injector from the fuel rail
(Fig. 11).
Fig. 11 FUEL INJECTOR & CLIP
INSTALLATION
(1) Install the fuel injectors to the fuel rail.
(2) Install fuel rail under throttle body.
(3) Apply a light coating of clean engine oil to the
O-ring on the nozzle end of each injector.
(4) Insert fuel injector nozzles into openings in
intake manifold. Seat the injectors in place. Tighten
fuel rail bolts to 12 N·m (105 in. lbs.) (Fig. 9).
(5) Attach electrical connectors to fuel injectors
(Fig. 7).
(6) Connect the electrical connector to the MAP
sensor and Coolant Temperature sensor (Fig. 4).
(7) Connect the electrical connector to the TPS and
Idle Air Control (Fig. 5).
(8) Install the wiring harness to the wiring clips
under the throttle body (Fig. 6).
(9) Connect fuel supply tube to fuel rail (Fig. 7).
Refer to Quick Connect Fittings in the 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.
FUEL PUMP RELAY
DESCRIPTION
The relay is located in the PDC. Check electrical
terminals for corrosion and repair as necessary.
OPERATION
The fuel pump relay supplies battery voltage to the
fuel pump. A buss bar in the Power Distribution Cen-
ter (PDC) supplies voltage to the solenoid side and
contact side of the relay. The fuel pump relay power
circuit contains a fuse between the buss bar in the
PDC and the relay. The fuse is located in the PDC.
Refer to the Wiring Diagrams for circuit information.
The PCM controls the fuel pump relay by switch-
ing the ground path for the solenoid side of the relay
on and off. The PCM turns the ground path off when
the ignition switch is in the Off position. When the
ignition switch is in the On position, the PCM ener-
gizes the fuel pump. If the crankshaft position sensor
does not detect engine rotation, the PCM de-ener-
gizes the relay after approximately one second.
IDLE AIR CONTROL MOTOR
DESCRIPTION
The idle air control motor is mounted at the front
right of the intake manifold (Fig. 12).
Fig. 12 TPS & IDLE AIR CONTROL
1 - Throttle Position Sensor
2 - Idle Air Control Motor
3 - Fuel Rail
4 - Connector Fuel Line for Fuel Rails
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