Fuel Pump Relay - Chrysler PT Cruiser Service & Repair Manual

14 - 36 FUEL INJECTION
FUEL INJECTOR (Continued)
(7) Install the engine cover or throttle control
shield if equipped.
(8) Install the negative battery cable.
(9) Install the air cleaner lid, connect the inlet air
temperature sensor and makeup air hose. Tighten air
inlet tube clamps to 3 N·m ±1 (25 in. lbs. ±5) torque.
INSTALLATION - 1.6L
(1) Apply a light coating of clean engine oil to the
upper O-ring.
(2) Install injector in cup on fuel rail.
(3) Install retaining clip.
(4) Apply a light coating of clean engine oil to the
O-ring on the nozzle end of each injector.
(5) Insert fuel injector nozzles into openings in
lower intake manifold (Fig. 19). Seat the injectors in
place. Tighten fuel rail mounting screws to 22.5 N·m
± 3 N·m (200±30 in. lbs.).
(6) Attach electrical connectors to fuel injectors
(Fig. 17), refer to the fuel injector connector section
for electrical connector installation.
(7) Connect fuel supply tube to fuel rail (Fig. 18).
Refer to Quick Connect Fittings in the Fuel Delivery
Section of this Group.
(8) Install the wiring harness to the fuel rail
brackets.
(9) Connect the negative battery cable.
(10) Use the DRB scan tool ASD Fuel System Test
to pressurize the fuel system. Check for leaks.
(11) Install air cleaner assembly cover.
INSTALLATION - 2.4L TURBO
(1) Apply a light coating of clean engine oil to the
upper O-ring.
(2) Install injector in cup on fuel rail.
(3) Install retaining clip.
(4) Install the fuel injectors to the fuel rail (Fig.
25).
(5) Apply a light coating of clean engine oil to the
O-ring on the nozzle end of each injector.
(6) Insert fuel injector nozzles into openings in
intake manifold. Seat the injectors in place.
(7) Install the 2 bolts to the fuel rail (Fig. 24).
Tighten fuel rail bolts to 22.5 ±3 N·m (200 ±30 in.
lbs.)
(8) Install the wiring harness to the fuel rail (Fig.
24).
(9) Connect and lock the electrical connectors to
the fuel injectors.
(10) Connect the fuel line to the fuel rail (Fig. 23).
Refer to Quick Connect Fittings in the Fuel Delivery
Section of this Group.
(11) Rotate the assembly back into place and
install the 2 bolts to the thermostat housing tighten
to N·m ( in. lbs.).
(12) Move the upper radiator house clamp back
into place (Fig. 19).
(13) Install the 2 small hoses to the thermostat
housing (Fig. 20).
(14) Fill the Coolant system, refer to the Cooling
section for more information.
(15) Install the intake manifold, refer to the
Engine section.
(16) Install the 2 bolts to the rear of the intake
manifold (Fig. 17) tighten to N·m ( in. lbs.).
(17) Install the 5 bolts to the front of the intake
manifold and tighten to N·m ( in. lbs.).
(18) Install the vacuum lines to the rear of the
intake manifold (Fig. 17).
(19) Connect and lock the MAP sensor electrical
connector (Fig. 16).
(20) Install the cables to the throttle body bracket.
(21) Install the throttle and speed control cables to
the throttle body.
(22) Install the throttle control shield (Fig. 15).
(23) Connect and lock the electrical connections at
the throttle body (Fig. 14).
(24) Connect the purge hose to the throttle body
(Fig. 14).
(25) Connect the throttle body inlet hose to the
throttle body (Fig. 14) and tighten clamps to 3 N·m
±1 (25 in. lbs. ±5) torque.
(26) Connect the negative battery cable.
(27) Use the DRB scan tool ASD Fuel System Test
to pressurize the fuel system. Check for leaks.

FUEL PUMP RELAY

DESCRIPTION
The fuel pump relay is located in the PDC. The
inside top of the PDC cover has a label showing relay
and fuse location.
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.
PT