engine mount CHRYSLER CARAVAN 2002 Service Manual

(6) Support engine and remove right engine mount
assembly.
(7) Remove outer timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
(8) Using special tool VM.1055, remove injection
pump sprocket retaining nut (Fig. 7).
NOTE: The use of special tool VM.1067 will allow
you to remove the injection pump without removing
the timing belt from the engine. This will allow you
to remove and install the injection pump without
altering injection pump timing.(9) Install feet from VM.1067 in injection pump
sprocket as shown (Fig. 8).
(10) Install inner flange of special tool VM.1067 on
injection pump sprocket as shown (Fig. 9). Secure
flange to feet in injection pump sprocket with allen
bolts supplied with tool.
(11) Screw injection pump sprocket holding plate
assembly into flange of VM.1067 (Fig. 10) Using LHD
threaded bolt supplied, secure holding plate assembly
to timing belt inner cover.
Fig. 7 INJECTION PUMP SPROCKET RETAINING
NUT REMOVAL/INSTALLATION
1 - IDLER PULLEY
2 - TIMING BELT
3 - VM.1055
4 - INJECTION PUMP SPROCKET
Fig. 8 VM.1067 FEET INSTALLATION
1 - OUTER TIMING BELT SEALING SURFACE
2 - TIMING BELT
3 - TIMING BELT SPROCKET
4 - FEET FOR SPECIAL TOOL VM.1067
5 - INNER TIMING BELT COVER
14a - 8 FUEL DELIVERYRG
FUEL INJECTION PUMP (Continued)
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(6) Using special tool VM.1055 (Fig. 7), torque
injection pump sprocket retaining nut to 88.3N´m.
(7) Connect fuel pressure solenoid electrical con-
nector (Fig. 11).
(8) Connect fuel supply and return lines at injec-
tion pump (Fig. 11).
(9) Install generator (Fig. 11)(Refer to 8 - ELEC-
TRICAL/CHARGING/GENERATOR - INSTALLA-
TION).(10) Install outer timing belt cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION).
(11) Install right engine mount assembly.
(12) Install accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
(13) Install power steering belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION).
(14) Install air cleaner housing assembly.
(15) Install engine cover (Refer to 9 - ENGINE -
INSTALLATION).
(16) Connect negative battery cable.
WATER IN FUEL SENSOR
DESCRIPTION
The WIF sensor is located in the bowl assembly of
the fuel filter/water separator.
OPERATION
The sensor sends an input to the Engine Control
Module (ECM) when it senses water in the fuel filter/
water separator. As the water level in the filter/sep-
arator increases, the resistance across the WIF
sensor decreases. This decrease in resistance is sent
as a signal to the ECM and compared to a high
water standard value. Once the value reaches 30 to
40 kilohms, the ECM will activate the water-in-fuel
warning lamp through CCD bus circuits. This all
takes place when the ignition key is initially put in
the ON position. The ECM continues to monitor the
input at the end of the intake manifold air heater
post-heat cycle.
Fig. 11 FUEL INJECTION PUMP LOCATION
1 - CYLINDER HEAD COVER/INTAKE MANIFOLD
2 - INJECTION PUMP
3 - FUEL PRESSURE SOLENOID
4 - ACCESSORY MOUNTING BRACKET
5 - GENERATOR
14a - 10 FUEL DELIVERYRG
FUEL INJECTION PUMP (Continued)
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(7) Remove fuel injector from cylinder head (Fig.
3).
INSTALLATION
NOTE: Be sure the copper washer is installed on
end of injector before installing in cylinder head.
(1) Install fuel injector in cylinder head.(2) Install fuel injector retainer and bolt (Fig. 3).
Torque bolt to 32.4 N´m.
(3) Install fuel injector high pressure line (Fig. 3).
(4) Install fuel return line to injector (Fig. 3).
(5) Connect fuel injector electrical connector.
(6) Install engine cover (Refer to 9 - ENGINE
COVER - INSTALLATION).
(7) Connect negative battery cable.
ACCELERATOR PEDAL
POSITION SENSOR
DESCRIPTION
The accelerator pedal position sensor mounts to
the accelerator pedal bracket (Fig. 4).
OPERATION
The accelerator pedal position sensor contains a
potentiometer that is operated by the accelerator
pedal. As the accelerator pedal is depressed and
released, the sensor provides a variable voltage sig-
nal to the engine control module. This voltage signal
is directly proportional to accelerator pedal position.
When the pedal is fully depressed, the voltage signal
is high.
Fig. 3 FUEL SYSTEM COMPONENTS
1 - FUEL RAIL RETAINING BOLT
2 - FUEL RAIL RETAINING STUD
3 - FUEL RAIL RETURN LINE
4 - FUEL RAIL
5 - FUEL RAIL SUPPLY LINE
6 - IDLER PULLEY
7 - CRANKSHAFT PULLEY
8 - CRANKSHAFT PULLEY RETAINING BOLTS
9 - BELT TENSIONER RETAINING BOLT
10 - BELT TENSIONER
11 - FUEL INJECTOR RETAINER
12 - FUEL INJECTOR RETURN LINE
13 - FUEL INJECTOR RETAINING BOLT
14 - FUEL INJECTORS
15 - FUEL INJECTOR HIGH PRESSURE SUPPLY LINES
Fig. 4 ACCELERATOR PEDAL POSITION SENSOR
LOCATION (TYPICAL)
1 - ACCELERATOR PEDAL POSITION SENSOR ELECTRICAL
CONNECTOR
2 - ACCELERATOR PEDAL POSITION SENSOR
3 - ACCELERATOR PEDAL
4 - ACCELERATOR PEDAL MOUNTING BRACKET
RGFUEL INJECTION14a-13
FUEL INJECTOR (Continued)
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REMOVAL
REMOVAL - PEDAL POSITION SENSOR (LHD)
(1) Disconnect negative battery cable.
(2) Disconnect pedal position sensor electrical con-
nector (Fig. 4).
(3) Remove 2 pedal position sensor retaining nuts
(Fig. 4).
(4) Remove pedal position sensor from vehicle.
REMOVAL - PEDAL POSITION SENSOR (RHD)
(1) Disconnect negative battery cable.
(2) Disconnect pedal position sensor electrical con-
nector (Fig. 4).
(3) Remove 2 pedal position sensor retaining nuts
(Fig. 4).
(4) Remove pedal position sensor from vehicle.
INSTALLATION
INSTALLATION - PEDAL POSITION SENSOR
(LHD)
(1) Position pedal position sensor in vehicle.
(2) Install pedal position sensor retaining nuts
(Fig. 4).
(3) Connect pedal position sensor electrical connec-
tor (Fig. 4).
(4) Connect negative battery cable.
INSTALLATION - PEDAL POSITION SENSOR
(RHD)
(1) Position pedal position sensor in vehicle.
(2) Install 2 pedal position sensor retaining nuts
(Fig. 4).
(3) Connect pedal position sensor electrical connec-
tor (Fig. 4).
(4) Connect negative battery cable.
BOOST PRESSURE SENSOR
DESCRIPTION
The boost pressure/ intake air temperature sensor
is mounted to the top of the intake manifold. The
sensor allows the ECM to monitor air pressure
within the intake manifold. This sensor is also used
to monitor the intake air temperature (Fig. 5).
OPERATION
When the intake manifold pressure is low (high
vacuum) sensor voltage output is 0.25-1.8 volts at the
ECM. When the intake manifold pressure is high due
to turbo boost, sensor voltage output is 2.0-4.7 volts.
The sensor receives a 5-volts reference from the
ECM. Sensor ground is also provides by the ECM.
The ECM uses boost pressure combined with intake
air temerature to determine the volume of air enter-
ing the engine.
DIAGNOSIS AND TESTING - BOOST
PRESSURE/INTAKE AIR TEMPERATURE
SENSOR
If the boost pressure sensor fails, the ECM records
a DTC into memory and continues to operate the
engine in one of the three limp-in modes. When the
ECM is operating in this mode, a loss of power will
be present, as if the turbocharger was not operating.
The best method for diagnosing faults with the boost
pressure sensor is with the DRB IIItscan tool. Refer
to the Diesel Powertrain Diagnostic Manual for more
information.
Refer to On-Board Diagnostics in Emissions Con-
trol System for a list of Diagnostic Trouble Codes
(DTC's) for certain fuel system components.
Fig. 5 BOOST PRESSURE SENSOR/INTAKE AIR
TEMPERATURE SENSOR
14a - 14 FUEL INJECTIONRG
ACCELERATOR PEDAL POSITION SENSOR (Continued)
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INTAKE AIR TEMPERATURE
SENSOR
DESCRIPTION
The boost pressure sensor/intake air temperature
sensor is located in the top of the intake manifold
(Fig. 6). The intake air temperature sensor is used to
measure the intake air temperature. The intake air
temperture sensor is a dual purpose sensor. It is also
used as a boost pressure sensor.
OPERATION
The intake air temperature sensor is a negative
temperature coefficient (NTC) thermistor (resistance
varies inversly with temperature). This means at
cold air temperature its resistance is high, sothe volt-
age signal will be high. As intake air temperature
increases, sensor resistance decreases and the signal
voltage will be low. This allows the sensor to provide
an analog voltage signal (0.2-4.8 volts) to the ECM.
REMOVAL
(1) Disconnect negative battery cable.
(2) Remove engine cover retaining bolts and cover-
(Refer to 9 - ENGINE COVER - REMOVAL).(3) Disconnect intake air temperature electrical
connector.
(4) Remove intake air temperature sensor retain-
ing screws and sensor (Fig. 6).
INSTALLATION
(1) Install intake air temperature sensor and
retaining bolts (Fig. 6). Torque to 5.4 N´m.
(2) Connect intake air temperature sensor.
(3) Install engine cover and retaining bolts (Refer
to 9 - ENGINE COVER - INSTALLATION).
CRANKSHAFT POSITION
SENSOR
DESCRIPTION
The crankshaft position sensor is mounted in the
right rear of the engine block below the turbocharger
(Fig. 7). This sensor is used to detect engine speed.
OPERATION
The crankshaft position sensor is a magnetic
pickup type sensor that generates an ac signal. The
sensor contains a permanent magent and a coil of
wire. The sensor generates an ac signal each time a
notch in the reluctor wheel on the crankshaft passes
across the permanent magnet. The ECM calculates
engine speed based on the frequency of the ac signal.
The ECM supplies the sensor ground.
Fig. 6 BOOST PRESSURE SENSOR/INTAKE AIR
TEMPERATURE SENSOR LOCATION
1 - FUEL RAIL
2 - FUEL PRESSURE SENSOR
3 - INTAKE AIR TEMPERATURE/BOOST PRESSURE SENSOR
4 - CYLINDER HEAD COVER/INTAKE MANIFOLD
Fig. 7 CRANKSHAFT POSITION SENSOR
1 - CRANKSHAFT POSITION SENSOR
2 - CRANKSHAFT POSITION SENSOR ELECTRICAL
CONNECTOR
RGFUEL INJECTION14a-15
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MASS AIR FLOW (MAF)
SENSOR
DESCRIPTION
The Mass Air Flow (MAF) Sensor is mounted
inline in the air intake between the air filter and the
turbocharger (Fig. 8).
OPERATION
The ECM uses the mass air flow (MAF) sensor to
measure air density. The MAF sensor contains a
ceramic element. A signal voltage is provided to the
element. As engine speed increases, airflow across
the ceramic element increases. Changes in air flow
and air density cause the temperature of the ceramic
element to fluxuate. The ceramic element changes
resistance respectively to changes in temperature.
The change in resistance varies the signal voltage
output to the ECM. The diesel power relay supplies
battery power the to MAF sensor. Ground is providedby the ECM. The MAF sensor signal is provided by
the ECM.
REMOVAL
(1) Disconnect negative battery cable.
(2) Disconnect MAF sensor electrical connector
(Fig. 9).
(3) Loosen MAF sensor retaining clamps (Fig. 9).
(4) Remove MAF sensor from airduct (Fig. 9).
INSTALLATION
(1) Install MAF sensor in airduct (Fig. 9).
(2) Tighten retaining clamps (Fig. 9).
(3) Connect MAF sensor electrical connector (Fig.
9).
(4) Connect negative battery cable.
Fig. 8 MASS AIR FLOW (MAF) SENSOR
Fig. 9 MASS AIR FLOW (MAF) SENSOR LOCATION
1 - MAF SENSOR ELECTRICAL CONNECTOR
2 - RETAINING CLAMPS
3 - MASS AIR FLOW (MAF) SENSOR
4 - AIR CLEANER HOUSING
14a - 16 FUEL INJECTIONRG
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(6) Start engine and let idle just long enough to
circulate power steering fluid through the analyzer
and hoses. Shut off engine.
(7) Check power steering fluid level and add fluid
as necessary. Start engine again and let idle until the
air is out of the fluid.
(8) Gauge should read below 300 psi (2068 kPa). If
above, inspect the hoses for restrictions and repair as
necessary. The initial pressure should be in the range
of 100-275 psi (689-1896 kPa) depending on fluid
temperature. The flow meter should read above 1.5
GPM.
CAUTION: The following test procedure involves
testing maximum pump pressure output and flow
control valve operation. Do not leave valve closed
for more than four seconds as the pump could be
damaged.
NOTE: Power steering pump maximum pressure for
2.4L engines is 1,200 ± 1,350 psi (8,274 ± 9,308
kPa). Power steering pump maximum pressure for
all other engines is 1,400 ± 1,500 psi (9,653 ± 10,342
kPa).
(9) Close analyzer valve fully three times and
record highest pressure indicated each time. All three
readings must be within specifications. If any of the
three power steering pump pressures are above orbelow specifications, replace pump. (Refer to 19 -
STEERING/PUMP - REMOVAL)
CAUTION: Do not force the steering to operate
against the stops for more than 4 seconds at a time
because pump damage can result.
(10) Once the pump has been verified as working
correctly, completely open the valve on the Power
Steering Analyzer. Turn the steering wheel to the
extreme left until the stop in the steering gear is
met. Hold it there for 2±4 seconds, then release it.
Now turn the steering wheel to the right until the
right stop is met. Hold it there for 2±4 seconds, then
release it. Record the stabilized pressure at each
position. Compare the recorded readings to the spec-
ifications. If the output pressures are not within 100
psi (689 kPa) of one another against either stop or
are below specifications, the steering gear is leaking
internally and must be replaced. (Refer to 19 -
STEERING/GEAR - REMOVAL)
DIAGNOSIS AND TESTING - STEERING
SYSTEM DIAGNOSIS CHARTS
NOTE: There are three diagnosis charts following
that cover POWER STEERING NOISE, STEERING
WHEEL FEEL, and POWER STEERING FLUID.
POWER STEERING NOISE
CONDITION POSSIBLE CAUSES CORRECTION
OBJECTIONABLE HISS
OR WHISTLE*1. Damaged or mispositioned
steering column shaft/coupling dash
panel seal.1. Reposition or replace steering
column shaft/coupling dash panel seal.
2. Noisy valve in power steering
gear.2. Replace power steering gear.
3. Mis-routed power steering hose. 3. Check routing of power steering
hoses. Ensure hoses do not come in
unwanted contact with other
components and objects.
RATTLE OR EXCESSIVE
CLUNK**1. Power steering gear loose on front
suspension crossmember.1. Inspect power steering gear
mounting bolts. Replace as necessary.
Tighten to the specified torque.
2. Front suspension crossmember
mounting fasteners loose at frame.2. Tighten the front suspension
crossmember mounting fasteners to the
specified torque.
3. Loose tie rod (outer or inner). 3. Check tie rod pivot points for wear.
Replace worn/loose parts as required.
RSSTEERING19-3
STEERING (Continued)
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CONDITION POSSIBLE CAUSES CORRECTION
2. Steering column lower bearing
spring retainer slipped on steering
column shaft.2. Replace steering column.
3. Loose steering column to
instrument panel fasteners.3. Tighten fasteners to specified torque.
STEERING WHEEL, DASH
OR VEHICLE VIBRATES
DURING LOW SPEED OR
STANDSTILL STEERING
MANEUVERS.1. Air in the fluid of the power
steering system.1. Bleed air from system following the
power steering pump initial operation
service procedure.*
2. Tires not properly inflated. 2. Inflate tires to the specified pressure.
3. Excessive engine vibration. 3. Ensure that the engine is tuned properly.
4. Loose tie rod end jam nut. 4. Tighten the inner to outer tie rod jam nut
to the specified torque.
5.Overcharged air conditioning
system.5.Check air conditioning pump head
pressure and correct as necessary.
6. Grounded engine mount. 6. Repair as necessary.
7. Loose outer tie rod. 7. Replace outer tie rod.
STEERING CATCHES,
SURGES OR STICKS IN
CERTAIN POSITIONS OR
IS DIFFICULT TO TURN.
***1. Low power steering fluid level. 1. Fill power steering fluid reservoir to
specified level and check for leaks.
2. Tires not inflated to specified
pressure.2. Inflate tires to the specified pressure.
3. Lack of lubrication in front lower
control arm ball joints.3. Lubricate ball joints if ball joints are not a
lubricated-for-life type ball joint. If ball joint
is a lubricated-for-life ball joint, replace ball
joint.
4. Worn or binding lower control arm
ball joint.4. Replace lower control arm ball joint.
5. Lack of lubrication in steering gear
outer tie rod ends.5. Lubricate tie rod ends if they are not a
lubricated-for-life type. If tie rod end is a
lubricated-for-life type, replace tie rod end.
6. Loose power steering pump drive
belt.6. Tighten the power steering pump drive
belt to specifications or replace automatic
tensioner where applicable. If drive belt is
worn or glazed, replace belt.
7. Faulty power steering pump
(Perform Power Steering Flow and
Pressure Test).7. Replace power steering pump.
8. Faulty power steering gear
(Perform Power Steering Flow and
Pressure Test).8. Replace power steering gear.
9. Excessive friction in steering
column or intermediate shaft/coupler.9. Isolate and correct condition.
10. Excessive friction in power
steering gear.10. Replace power steering gear.
19 - 6 STEERINGRS
STEERING (Continued)
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SPECIFICATIONS
POWER STEERING FASTENER TORQUE
DESCRIPTION TORQUE
Power Steering Pump:
Flow Control Valve
Pressure Fitting75 N´m (55 ft. lbs.)
Mounting Bolts 54 N´m (40 ft. lbs.)
Rear Bracket To Engine
Mounting Bolts54 N´m (40 ft. lbs.)
Steering Gear:
Mounting Bolt - Size-M14 183 N´m (135 ft. lbs.)
Mounting Bolts -
Size-M1295 N´m (70 ft. lbs.)
Tie Rod Steering Knuckle
Nut75 N´m (55 ft. lbs.)
Tie Rod Jam Nut 75 N´m (55 ft. lbs.)
Coupling Pinch Bolt 28 N´m (250 in. lbs.)
Power Steering Fluid
Hoses:
Hose Tube Nuts 31 N´m (275 in. lbs.)
Routing Bracket Bolts 23 N´m (200 in. lbs.)
SPECIAL TOOLS
POWER STEERING
Power Steering Analyzer 6815
Adapters, Power Steering Analyzer 6893
HOSE, POWER STEERING ANALYZER 6959
RSSTEERING19-9
STEERING (Continued)
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GEAR
TABLE OF CONTENTS
page page
GEAR
DESCRIPTION.........................26
OPERATION...........................26
WARNING
WARNINGS AND CAUTIONS.............26
REMOVAL
REMOVAL - LHD GEAR.................26
REMOVAL - RHD GEAR................29INSTALLATION
INSTALLATION - LHD GEAR.............32
INSTALLATION - RHD GEAR.............33
SPECIAL TOOLS
POWER STEERING GEAR..............34
OUTER TIE ROD
REMOVAL.............................34
INSTALLATION.........................34
GEAR
DESCRIPTION
This vehicle is equipped with a rack and pinion
power steering gear (Fig. 1). It is mounted to the
underside of the front suspension cradle/crossmem-
ber.
The steering column is attached to the gear
through the use of an intermediate shaft and cou-
plers. The outer ends of the power steering gear's
outer tie rods connect to the steering knuckles.
NOTE: The power steering gear should NOT be ser-
viced or adjusted unless DaimlerChrysler Corpora-
tion authorizes. If a malfunction or oil leak occurs,
the complete steering gear should be replaced.
Only the outer tie rods may be replaced separately
from the rest of the gear.
OPERATION
Turning of the steering wheel is converted into lin-
ear (side-to-side) travel through the meshing of the
helical pinion teeth with the rack teeth in the steer-
ing gear. This travel pushes and pulls the tie rods to
change the direction of the vehicle's front wheels.
Power assist steering provided by the power steer-
ing pump is controlled by an open center, rotary type
control valve which directs oil from the pump to
either side of the integral rack piston upon demand.
Road feel is controlled by the diameter of a torsion
bar which initially steers the vehicle. As required
steering effort increases, as in a turn, the torsion bar
twists, causing relative rotary motion between the
rotary valve body and the valve spool. This move-
ment directs oil behind the integral rack piston
which, in turn, builds hydraulic pressure and assists
in the turning effort.Manual steering control of the vehicle can be main-
tained if power steering assist is lost. However,
under this condition, steering effort is significantly
increased.
WARNING
WARNINGS AND CAUTIONS
WARNING: POWER STEERING FLUID, ENGINE
PARTS AND EXHAUST SYSTEM MAY BE
EXTREMELY HOT IF ENGINE HAS BEEN RUNNING.
DO NOT START ENGINE WITH ANY LOOSE OR DIS-
CONNECTED HOSES. DO NOT ALLOW HOSES TO
TOUCH HOT EXHAUST MANIFOLD OR CATALYST.
WARNING: FLUID LEVEL SHOULD BE CHECKED
WITH THE ENGINE OFF TO PREVENT PERSONAL
INJURY FROM MOVING PARTS.
CAUTION: When the system is open, cap all open
ends of the hoses, power steering pump fittings or
power steering gear ports to prevent entry of for-
eign material into the components.
REMOVAL
REMOVAL - LHD GEAR
(1) Remove cap from power steering fluid reser-
voir.
(2) Using a siphon pump, remove as much fluid as
possible from the power steering fluid reservoir.Use
care not to damage the filter mesh below the
fluid surface.
19 - 26 GEARRS
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