2002 CHRYSLER CARAVAN key

TRANSMISSION CONTROL
RELAY
DESCRIPTION
The transmission control relay (Fig. 336) is located
in the Intelligent Power Module (IPM), which is
located on the left side of the engine compartment
between the battery and left fender.
OPERATION
The relay is supplied fused B+ voltage, energized by
the TCM, and is used to supply power to the solenoid
pack when the transmission is in normal operating mode.
When the relay is ªoffº, no power is supplied to the sole-
noid pack and the transmission is in ªlimp-inº mode.
After a controller reset (ignition key turned to the ªrunº
position or after cranking engine), the TCM energizes the
relay. Prior to this, the TCM verifies that the contacts
are open by checking for no voltage at the switched bat-
tery terminals. After this is verified, the voltage at the
solenoid pack pressure switches is checked. After the
relay is energized, the TCM monitors the terminals to
verify that the voltage is greater than 3 volts.
TRANSMISSION RANGE
SENSOR
DESCRIPTION
The Transmission Range Sensor (TRS) is mounted
to the top of the valve body inside the transaxle andcan only be serviced by removing the valve body. The
electrical connector extends through the transaxle
case (Fig. 337) .
The Transmission Range Sensor (TRS) has four
switch contacts that monitor shift lever position and
send the information to the TCM.
The TRS also has an integrated temperature sen-
sor (thermistor) that communicates transaxle tem-
perature to the TCM and PCM (Fig. 338) .
Fig. 336 Transmission Control Relay Location
1 - TRANSMISSION CONTROL RELAY
2 - LEFT FENDER
3 - INTELLIGENT POWER MODULE (IPM)
4 - BATTERY
Fig. 337 Transmission Range Sensor (TRS)
Location
1 - TRANSMISSION RANGE SENSOR
Fig. 338 Transmission Temperature Sensor
1 - TRANSMISSION RANGE SENSOR
2 - TEMPERATURE SENSOR
RS41TE AUTOMATIC TRANSAXLE21 - 291
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DIAGNOSIS AND TESTING - COMMON
PROBLEM CAUSES
The majority of transaxle malfunctions are a result
of:
²Insufficient lubrication
²Incorrect lubricant
²Misassembled or damaged internal components
²Improper operation
HARD SHIFTING
Hard shifting may be caused by a misadjusted
crossover cable. If hard shifting is accompanied by
gear clash, synchronizer clutch and stop rings or gear
teeth may be worn or damaged.
Hard shifting may also be caused by a binding or
broken shift cover mechanism. Remove shift cover
and verify smooth operation. Replace as necessary.
Misassembled synchronizer components also cause
shifting problems. Incorrectly installed synchronizer
sleeves, keys, balls, or springs can cause shift prob-
lems.
NOISY OPERATION
Transaxle noise is most often a result of worn or
damaged components. Chipped, broken gear or syn-
chronizer teeth, and brinnelled, spalled bearings all
cause noise.
Abnormal wear and damage to the internal compo-
nents is frequently the end result of insufficient
lubricant.
SLIPS OUT OF GEAR
Transaxle disengagement may be caused by mis-
aligned or damaged shift components, or worn teeth
on the drive gears or synchronizer components. Incor-
rect assembly also causes gear disengagement. Check
for missing snap rings.
LOW LUBRICANT LEVEL
Insufficient transaxle lubricant is usually the
result of leaks, or inaccurate fluid level check or refill
method. Leakage is evident by the presence of oil
around the leak point. If leakage is not evident, the
condition is probably the result of an underfill.
If air±powered lubrication equipment is used to fill
a transaxle, be sure the equipment is properly cali-
brated. Equipment out of calibration can lead to an
underfill condition.
CLUTCH PROBLEMS
Worn, damaged, or misaligned clutch components
can cause difficult shifting, gear clash, and noise.
A worn or damaged clutch disc, pressure plate, or
release bearing can cause hard shifting and gear
clash.
REMOVAL
REMOVAL - 2.4L GAS
(1) Raise hood.
(2) Disconnect gearshift cables from shift levers/
cover assembly (Fig. 10).
(3) Remove gearshift cable retaining clips from
mounting bracket (Fig. 10). Remove cables and
secure out of way.
(4) Remove three (3) right engine mount bracket-
to-transaxle bolts (Fig. 11).
(5) Raise vehicle on hoist.
(6) Remove front wheel/tires and halfshafts.
(7) Drain transaxle fluid into suitable container.
(8) Remove front harness retainer and secure har-
ness out of way.
Fig. 10 Gearshift Cables at Transaxle
1 - SELECTOR CABLE
2 - CABLE RETAINER
3 - CABLE RETAINER
4 - CROSSOVER CABLE
5 - MOUNT BRACKET
21 - 318 T850 MANUAL TRANSAXLERS
T850 MANUAL TRANSAXLE (Continued)
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SHIFT FORK AND SHAFT
DESCRIPTION
The T850 utilizes a unique shift fork and shaft
arrangement consisting of three shift forks and two
shafts as shown in (Fig. 276). This system is oper-
ated by the shift cover assembly, which combined
with a unique gearshift cable design, offers a higher
mechanical advantage over traditional shift systems.
This arrangement results in less friction and lower
shift cable loads for smoother, more positive opera-
tion. The shift fork assemblies are constructed of
brass, float about the shafts with the aid of needle
bearings, and are serviced only as fork/bearing
assemblies.
SYNCHRONIZER
DESCRIPTION
The T850 transaxle uses two styles of synchronizer
assemblies; a conventional single-cone style is used
for the 5th/Reverse and 3rd/4th applications (Fig.
277), and a dual-cone style for the 1st/2nd gear appli-
cation (Fig. 278).
DISASSEMBLY
Place synchronizer in a clean shop towel and wrap.
Press on inner hub. Carefully open up shop towel
and remove springs, balls, keys, hub, and sleeve.
CLEANING
CLEAN
Do not attempt to clean the blocking rings in sol-
vent. The friction material will become contaminated.
Place synchronizer components in a suitable holder
and clean with solvent. Air dry.
INSPECTION
INSPECT
Proper inspection of components involve:
²Teeth, for wear, scuffed, nicked, burred, or bro-
ken teeth
²Keys, for wear or distortion
²Balls and springs, for distortion, cracks, or wear
Fig. 276 Shift Fork/Shaft Components
1 - 5/R FORK
2 - SHAFT/LINK ASSEMBLY
3 - LINK
4 - 3/4 FORK
5 - 1/2 FORK
Fig. 277 3/4-5/R Synchronizer Assembly
1 - SLEEVE
2 - HUB
3 - BLOCKER RING (2)
4 - SPRING (3)
5 - KEY (3)
6 - BALL (3)
21 - 402 T850 MANUAL TRANSAXLERS
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If any of these conditions exist in these compo-
nents, replace as necessary.
ASSEMBLY
(1) Position synchronizer hub onto work bench.
Hub is non-directional.
(2) Install springs into hub slot.
(3) Insert key into hub and spring.
(4) Apply petroleum jelly to the hole in the key.
Insert balls into each key.
(5) Slide sleeve over the hub and depress balls as
you carefully slip the sleeve into position.
VEHICLE SPEED SENSOR
REMOVAL
(1) Raise vehicle on hoist.
(2) Disconnect the speed sensor connector (Fig.
279).CAUTION: Clean area around speed sensor before
removing to prevent dirt from entering the transaxle
during speed sensor removal.
(3) Remove speed sensor retaining bolt (Fig. 279).
(4) Remove speed sensor from transaxle.
CAUTION: Carefully remove vehicle speed sensor
so that sensor drive gear does not fall into trans-
axle. Should sensor drive gear fall into the trans-
axle during sensor removal, drive gear must be
reattached to sensor.
(5) Remove speed sensor drive gear from speed
sensor.
INSTALLATION
(1) Install pinion gear to speed sensor (Fig. 279) .
(2) Using a NEW o-ring, install the speed sensor
to the transaxle (Fig. 279) .
(3) Install the bolt and torque to 7 N´m (60 in.
lbs.).
(4) Connect speed sensor connector (Fig. 279) .
(5) Lower vehicle and road test to verify proper
speedometer operation.
Fig. 278 1/2 Synchronizer Assembly
1 - SLEEVE
2 - REACTOR RING (2)
3 - HUB
4 - BLOCKER RING (2)
5 - SLEEVE
6 - FRICTION CONE (2)
7 - SPRING (3)
8 - KEY (3)
9 - BALL (3)
Fig. 279 Speed Sensor and Pinion Removal/
InstallationÐTypical
1 - CONNECTOR
2 - SENSOR
3 - O-RING
4 - GEAR
RST850 MANUAL TRANSAXLE21 - 403
SYNCHRONIZER (Continued)
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DESCRIPTION N´m Ft. Lbs. In. Lbs.
Lifgate stabalizer wedge striker to D-pillar bolts 3 Ð 30
Luggage rack crossbar fasteners 4 Ð 35
Lumbar support handle screw 1 Ð 9
Pivot bolt to the body half of hood hinge 28 21 Ð
Prop assembly to lifgate bolts 28 21 Ð
Rear door glass to regulator bolt 11 8 Ð
Rear door hinge to B-pillar bolt 28 20 Ð
Rear door hinge to door bolt 28 20 Ð
Rear door latch striker 28 20 Ð
Rear latch to sliding door end frame 28 20 Ð
Rear seat back to seat cushion bolt 27 19 Ð
Recliner to seat back frame 12 9 Ð
Seatback frame upper rail 8 Ð 71
Seatback hinge bolt 48 35 Ð
Seatback hinge cover screws 2.3 Ð 20
Shoulder belt turning loop onto height adjuster 39 29 Ð
Sliding door center hinge adjusting bolt 15 Ð 130
Sliding door glass nuts 3.4 Ð 30
Sliding door latch striker 28 21 Ð
Sliding door to roller arm bracket 12 9 Ð
Storage bin track quide to seat riser 3.5 Ð 31
Support cylinders to liftgate 28 21 Ð
BODY LUBRICATION
LUBRICATION REQUIREMENTS
Body mechanisms and linkages should be
inspected, cleaned, and lubricated, as required, to
maintain ease of operation and to provide protection
against rust and wear. When performing other under
hood services, the hood latch release mechanism and
safety catch should be inspected, cleaned, and lubri-
cated. During the winter season, external door lock
cylinders should be lubricated to assure proper oper-
ation when exposed to water and ice.
Prior to the application of any lubricant, the parts
concerned should be wiped clean to remove dust and
grit. If necessary, a suitable solvent can be used to
clean the item to be lubricated. After lubricating a
component, any excess oil or grease should be
removed.
LUBRICANT APPLICATION
DOOR LOCK CYLINDERS
(1) Apply a small amount of lubricant directly into
the lock cylinder.
(2) Apply a small amount of lubricant to the key.(3) Insert key into lock cylinder and cycle the
mechanism from the locked to the unlocked position.
NOTE: Do not add more lubricant.
(4) Cycle the lock cylinder mechanism several
times to allow the lubricant to flow throughout the
cylinder.
(5) Wipe all lubricant from exterior of lock cylinder
and key.
ALL OTHER BODY MECHANISMS
(1) Clean component as described above.
(2) Apply specified lubricant to all pivoting and
sliding contact areas of component.
LUBRICANT USAGE
ENGINE OIL
²Door Hinges ± Hinge Pin and Pivot Contact
Areas
²Hood Hinges ± Pivot Points
²Liftgate Hinges
23 - 12 BODYRS
BODY (Continued)
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HINGE
REMOVAL
(1) Release front door latch and open door.
(2) Mark hinge foot print on both door and pillar
to aid when installing door.
(3) Support door on suitable lifting device.
(4) Remove bolts attaching front door to door
hinge.
(5) Remove bolts attaching hinge to pillar.
(6) Remove door hinge from vehicle.
INSTALLATION
CAUTION: When installing a new hinge, make sure
that the head of each hinge pin is fully seated into
the door hinge. Also, remove the plastic shipping
clip and replace it with the correct metal retaining
clip once the hinge pin is seated.
(1) Paint hinge prior to installation, if necessary.
(2) Position door hinge on vehicle.
(3) Install bolts attaching hinge to pillar. Tighten
bolts to 34 N´m (25 ft. lbs.).
(4) Install bolts attaching front door to door hinge.
Tighten bolts to 34 N´m (25 ft. lbs.).
(5) Align door to achieve equal spacing to sur-
rounding body panels. Panels should be flush across
all gaps.
(6) Verify door alignment and operation. Adjust as
necessary.
LATCH
REMOVAL
(1) Roll door glass up.
(2) Remove front door trim panel. (Refer to 23 -
BODY/DOOR - FRONT/TRIM PANEL - REMOVAL)
(3) Remove watershield as necessary to gain access
to the outside door handle.
(4) Through access hole at rear of inner door
panel, disconnect wire connector from power door
lock motor, if equipped.
(5) Disengage clips holding linkage to door latch
(Fig. 9).
(6) Remove linkages from door latch.
(7) Remove screws attaching door latch to door end
frame (Fig. 10).
(8) Remove door latch from door.
INSTALLATION
NOTE: The screws attaching the door latch to the
door end frame have nylon patches on the threads.
All screws must be replaced when the latch has
been removed.
(1) Insert inside handle latch link to door latch
and engage clip (Fig. 9).
Fig. 8 FRONT DOOR FRAME CLOSEOUT
MOLDINGS
1 - FRONT DOOR FRAME HEADER CLOSEOUT MOLDING
2 - FRONT DOOR FRAME B-PILLAR CLOSEOUT MOLDING
3 - FRONT DOOR FRAME A-PILLAR CLOSEOUT MOLDING
4 - FRONT DOOR
5 - FRONT DOOR FRAME
Fig. 9 LATCH ASSEMBLY
1 - OUTSIDE HANDLE TO LATCH LINK
2 - KEY CYLINDER TO LATCH LINK
3 - LATCH ASSEMBLY
4 - INSIDE HANDLE LINK AND SLEEVE
5 - LOCK KNOB LINK
23 - 18 DOOR - FRONTRS
FRAME CLOSEOUT MOLDING (Continued)
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(5) Disengage clip holding door latch linkage to
door latch (Fig. 12).
(6) Remove latch linkage from latch.
(7) Disengage clip holding door lock linkage to
door latch.
(8) Remove lock linkage from latch.
(9) Remove nuts attaching outside door handle to
door outer panel.
(10) Remove outside door handle from vehicle.
(11) Disengage clip holding lock cylinder into out-
side handle.
(12) Pull lock cylinder from door handle.
INSTALLATION
(1) Engage clip into outside handle to hold lock
cylinder (Fig. 12).
(2) With link arm toward rear of vehicle, push lock
cylinder into door handle until clip snaps into place.
(3) Insert lock linkage into door latch.
(4) Engage clip to hold door lock linkage to latch.
(5) Insert latch linkage into door latch.
(6) Engage clip to hold door latch linkage to latch.
(7) Install push in fasteners attaching VTSS
switch harness to inner door reinforcement bar, if
equipped.
(8) Connect VTSS switch connector into door har-
ness, if equipped.
(9) Verify door latch operation.(10) Install watershield and door trim panel.
TRIM PANEL
REMOVAL
(1) Remove the plug and remove screw attaching
door pull cup to inner door panel.
(2) Remove switch bezel and disconnect power win-
dow/memory switch.
(3) Remove screws attaching trim panel to door
from below map pocket.
(4) If equipped, remove window crank. (Refer to 23
- BODY/DOOR - FRONT/WINDOW CRANK -
REMOVAL)
(5) Remove screw holding door trim to door panel
from behind inside latch release handle.
(6) Disengage clips attaching door trim to door
frame around perimeter of panel.
(7) Lift trim panel upward to disengage flange
from inner belt molding at top of door.
(8) Tilt top of trim panel away from door to gain
access to latch linkage.
(9) Disengage clip attaching linkage rod to inside
latch release handle (Fig. 13).
(10) Separate linkage rod from latch handle.
(11) Disconnect the power door switch, courtesy
lamp electrical connectors.
Fig. 12 OUTSIDE DOOR HANDLE
1 - CLIP
2 - LOCK CYLINDER
3 - KEY CYLINDER TO LATCH LINK
4 - OUTSIDE HANDLE TO LATCH LINK
5 - LOCK KNOB LINK6 - FRONT DOOR
7 - KEY POSITION SWITCH
8 - OUTSIDE HANDLE
23 - 20 DOOR - FRONTRS
LOCK CYLINDER (Continued)
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WINDOW REGULATOR
REMOVAL
(1) Remove the watershield. (Refer to 23 - BODY/
DOOR - FRONT/WATERSHIELD - REMOVAL)
(2) Remove door glass retaining clips and secure
the window in the up position using masking tape or
equivalent (Fig. 15).
(3) Disconnect wire connector from power window
motor, if equipped.
(4) Loosen screws attaching front and rear window
guide rails to inner door panel (Fig. 16).
(5) Remove screw heads on guide rails from key
hole slots in inner door panel.
(6) Loosen screws attaching regulator to inner door
panel.
(7) Remove regulator from inner door panel.
(8) Extract rear guide rail through inner door
panel rear access hole (Fig. 17).
(9) Extract front guide rail through front access
hole.
INSTALLATION
(1) Insert front guide rail through front access
hole.
(2) Insert rear guide rail through rear access hole.
(3) Place window regulator in position on inner
door panel.(4) Place screw heads on guide rails in position
through key hole slots in inner door panel.
(5) Tighten screws to attach front and rear guide
rails to inner door panel.
(6) Connect wire connector into power window
motor, if equipped.
(7) Install door glass.
(8) Verify door glass alignment and operation.
(9) Install sound shield and door trim panel.
Fig. 15 FRONT DOOR GLASS CLIPS
1 - DOOR GLASS
2 - GLASS LIFT PLATE
3 - CLIP
4 - GUIDE RAIL
5 - REGULATOR LIFT PLATE
Fig. 16 FRONT DOOR MANUAL WINDOW
REGULATOR - TYPICAL
1 - FRONT DOOR
2 - MANUAL WINDOW REGULATOR
3 - GUIDE RAILS
Fig. 17 FRONT DOOR POWER WINDOW - TYPICAL
1 - POWER WINDOW MOTOR
2 - FRONT DOOR
3 - GUIDE RAILS
23 - 22 DOOR - FRONTRS
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