Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual — part 18
FUEL TANK PRESSURE RELIEF/ROLLOVER
VALVE—ALL WHEEL DRIVE
REMOVAL
(1) Remove fuel tank. Refer to Fuel Tank Removal in
this section.
(2) Wedge the blade of a screwdriver between the
rubber grommet and the fuel pump module.
(3) Pry the valve and grommet assembly from the
pump (Fig. 10).
(4) Place the valve upright on a flat surface to
remove the grommet. Push down on the grommet and
peel it off the valve.
INSTALLATION
(1) Install the rubber grommet in the fuel pump
module.
Only use power steering fluid to lubricate the
grommet.
(2) Lubricate the grommet with power steering fluid.
(3) Push the valve downward into the grommet.
Twist valve until properly positioned.
(3) Install fuel tank. Refer to Fuel Tank Installation
in this section.
Fig. 10 Removing Pressure Relief/Rollover Valve
.
FUEL SYSTEM
14 - 19
ACCELERATOR PEDAL AND THROTTLE CABLE
INDEX
page
page
Accelerator Pedal Service
. . . . . . . . . . . . . . . . . . 20
Throttle Cable Service
. . . . . . . . . . . . . . . . . . . . . 20
ACCELERATOR PEDAL SERVICE
CAUTION: When servicing the accelerator pedal,
throttle cable or speed control cable, do not damage
or kink the core wire inside the cable sheathing.
REMOVAL
(1) Working from the engine compartment, hold the
throttle body throttle lever in the wide open position.
Remove the throttle cable from the throttle body cam.
(2) From inside the vehicle, hold up the pedal and
remove the cable retainer and throttle cable from the
upper end of the pedal shaft (Fig. 1 and Fig. 2).
(3) Working from the engine compartment, remove
nuts from accelerator pedal assembly studs (Fig. 1).
Remove assembly from vehicle.
INSTALLATION
(1) Position accelerator pedal assembly on dash
panel. Install retaining nuts. Tighten retaining nuts to
11.8 N
Im (105 in. lbs.) torque.
(2) From inside the vehicle, hold up the pedal and
install the throttle cable and cable retainer in the
upper end of the pedal shaft.
(3) From the engine compartment, hold the throttle
body lever in the wide open position and install the
throttle cable.
THROTTLE CABLE SERVICE
CAUTION: When servicing the accelerator pedal,
throttle cable or speed control cable, do not damage
or kink the core wire inside the cable sheathing.
REMOVAL
(1) Working from the engine compartment, hold the
throttle body throttle lever in the wide open position.
remove the throttle cable from the throttle body cam
(Figs. 3, 4, and 5).
(2) From inside the vehicle, hold up the pedal and
remove the cable retainer and throttle cable from the
upper end of the pedal shaft (Fig. 1).
(3) Remove retainer clip from throttle cable and
grommet at dash panel (Fig. 2).
(4) From the engine compartment, pull the throttle
cable out of the dash panel grommet. The grommet
should remain in the dash panel.
(5) Remove the throttle cable from throttle bracket
by carefully compressing both retaining ears simulta-
neously. Then gently pull the throttle cable from
throttle bracket.
INSTALLATION
(1) From the engine compartment, push the housing
end fitting into the dash panel grommet.
(2) Install the cable housing (throttle body end) into
the cable mounting bracket on the engine.
Fig. 1 Accelerator Pedal and Throttle Cable—Front
View
Fig. 2 Accelerator Pedal and Throttle Cable—Rear
View
14 - 20
FUEL SYSTEM
.
(3) From inside the vehicle, hold up the pedal and
install throttle cable and cable retainer in the upper
end of the pedal shaft.
(4) At the dash panel, install the cable retainer
clip between the end of the throttle cable fitting and
grommet (Fig. 2).
(5) From the engine compartment, rotate the throt-
tle lever wide open and install the throttle cable.
Fig. 3 Throttle Cable to Throttle Body
Attachment—2.5L Engines
Fig. 4 Throttle Cable Attachment to Throttle Body
Attachment— 3.0L Engine
Fig. 5 Throttle Cable Attachment to Throttle Body
Attachment—3.3L Engine
.
FUEL SYSTEM
14 - 21
2.5L SINGLE POINT FUEL INJECTION—SYSTEM OPERATION
INDEX
page
page
Air Conditioning (A/C) Clutch Relay—Engine
Controller Output
. . . . . . . . . . . . . . . . . . . . . . . . . 26
Air Conditioning Switch Sense—Engine Controller
Input
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Alternator Field—Engine Controller Output
. . . . . . 27
Auto Shutdown (ASD) Relay and Fuel Pump
Relay—Engine Controller Output
. . . . . . . . . . . . 27
Automatic Idle Speed (AIS) Motor—Engine
Controller Output . . . . . . . . . . . . . . . . . . . . . . . . 27
Battery Voltage—Engine Controller Input . . . . . . . . 24
Brake Switch—Engine Controller Input
. . . . . . . . . 24
Canister Purge Solenoid—Engine Controller
Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Ccd Bus
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Check Engine Lamp—Engine Controller Output
. . 28
Coolant Temperature Sensor—Engine Controller
Input
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Diagnostic Connector—Engine Controller Output
. . 28
Distributor (Hall Effect) Pick-Up—Engine Controller
Input
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Emission Maintenance Reminder (EMR) Lamp—
Engine Controller Output
. . . . . . . . . . . . . . . . . . 28
Engine Controller
. . . . . . . . . . . . . . . . . . . . . . . . . 22
Engine Controller Reprogramming (Flash)
. . . . . . . 24
Fuel Injector—Engine Controller Output
. . . . . . . . 29
Fuel Pressure Regulator . . . . . . . . . . . . . . . . . . . . 31
General Information
. . . . . . . . . . . . . . . . . . . . . . . 22
Ignition Coil—Engine Controller Output
. . . . . . . . . 29
Manifold Absolute Pressure (MAP) Sensor—Engine
Controller Input
. . . . . . . . . . . . . . . . . . . . . . . . . 25
Modes of Operation
. . . . . . . . . . . . . . . . . . . . . . . 30
Oxygen Sensor (O
2
Sensor)—Engine Controller
Input
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Part Throttle Unlock Solenoid—Engine Controller
Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Radiator Fan Relay—Engine Controller Output
. . . 29
Speed Control Solenoids—Engine Controller
Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Speed Control—Engine Controller Input
. . . . . . . . 26
Tachometer—Engine Controller Output
. . . . . . . . . 29
Throttle Body
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Throttle Position Sensor (TPS)—Engine Controller
Input
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Transmission Park/Neutral Switch—Engine
Controller Input
. . . . . . . . . . . . . . . . . . . . . . . . . 26
Vehicle Distance (Speed) Sensor—Engine
Controller Input
. . . . . . . . . . . . . . . . . . . . . . . . . 26
GENERAL INFORMATION
The Electronic Fuel Injection System (Fig. 1) is a
computer regulated single point fuel injection system
that provides precise air/fuel ratio for all driving con-
ditions. The fuel injection system is controlled by the
Single Board Engine Controller II (SBEC II), referred
to in this manual as the engine controller.
The engine controller is a pre-programmed digital
computer.
The engine controller regulates ignition timing, air-
fuel ratio, emission control devices, cooling fan, charg-
ing system, speed control, and idle speed. The engine
controller can adapt its requirement to meet changing
operating conditions.
Various sensors provide the inputs necessary for the
engine controller to correctly regulate fuel flow at the
fuel injector. These include the manifold absolute pres-
sure, throttle position, oxygen sensor, coolant tempera-
ture, and vehicle distance sensors. In addition to the
sensors, various switches and relays provide important
information and system control. These include the
park/neutral switch, air conditioning clutch switch,
auto shutdown relay and fuel pump relay.
All inputs to the engine controller are converted into
signals. Based on these inputs the engine controller
adjusts air-fuel ratio, ignition timing and other con-
trolled outputs. The engine controller adjusts the air-
fuel ratio by changing the injector pulse width. Injector
pulse width is the period of time the injector is ener-
gized.
SYSTEM DIAGNOSIS
The engine controller tests many of its own input and
output circuits. If a fault is found in a system, this
information is stored in memory. Fault codes can
displayed using the Check Engine lamp. Also, the
technician can obtain the fault description by connect-
ing the DRB II to the vehicle. For fault code informa-
tion, refer to On Board Diagnostics in the General
Diagnosis—Single Point Fuel Injection section of this
group.
CCD BUS
Various controllers and modules exchange informa-
tion through a communications port called the CCD
Bus. The engine controller transmits the check engine
lamp On/Off signal, engine RPM and vehicle load data
on the CCD Bus.
ENGINE CONTROLLER
The engine controller is a digital computer contain-
ing a microprocessor (Fig. 2). The controller receives
input signals from various switches and sensors that
are referred to as Engine Controller Inputs. Based on
these inputs, the controller adjusts various engine and
vehicle operations through devices that are referred to
as Engine Controller Outputs.
14 - 22
FUEL SYSTEM
.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст