key CHRYSLER CARAVAN 2002 Service Manual

DIAGNOSIS AND TESTING - BRAKE/
TRANSMISSION SHIFT INTERLOCK SOLENOID
For intended BTSI system operation, refer to the
following chart:
ACTION EXPECTED RESPONSE
1. Turn key to the9OFF9
position.1. Shifter CAN be shifted
out of park with brake
pedal applied.
2. Turn key to the
9ON/RUN9position.2. Shifter CANNOT be
shifted out of park.
3. Turn key to the
9ON/RUN9position and
depress the brake pedal.3. Shifter CAN be shifted
out of park.
4. Leave shifter in any
gear and try to return key
to the9LOCK9or9ACC9
position.4. Key cannot be
returned to the9LOCK9or
9ACC9position.
5. Return shifter to
9PARK9and try to remove
the key.5. Key can be removed
(after returning to9LOCK9
position).
6. With the key removed,
try to shift out of9PARK9.6. Shifter cannot be
shifted out of9PARK9.
NOTE: Any failure to meet these expected
responses requires system repair. Refer to the
appropriate Diagnostic Information.
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove instrument panel lower shroud (Fig.
214).(3) Remove knee bolster (Fig. 215).
(4) Remove steering column lower shroud.
(5) Disconnect brake/transmission shift interlock
(BTSI) solenoid connector (Fig. 216).
Fig. 214 Instrument Panel Lower Silencer
1 - INSTRUMENT PANEL LOWER SILENCER
Fig. 215 Knee Bolster
1 - KNEE BOLSTER
Fig. 216 BTSI Solenoid Connector
1 - BTSI SOLENOID
2 - SOLENOID CONNECTOR
RS31TH AUTOMATIC TRANSAXLE21 - 117
SHIFT INTERLOCK SOLENOID (Continued)
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(6) Install gear shift cable to transaxle upper
mount bracket (Fig. 223). An audible ªclickº should
be heard.
(7) Connect gear shift cable end to transaxle man-
ual valve lever (Fig. 223).
(8) Adjust gearshift cable. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - 41TE/GEAR
SHIFT CABLE - ADJUSTMENTS)
(9) Install speed control servo into position.
(10) Install battery.
(11) Install battery shield.
(12) Connect battery cables.
ADJUSTMENTS
GEARSHIFT CABLE ADJUSTMENT
VERIFICATION
(1) Place gearshift lever in gated park (P).
(2) Attempt to move vehicle by rocking back and
forth on level ground. If vehicle does not move,
attempt to start engine. If engine starts, the park
position is correct.
(3) Set parking brake.
(4) Turn key to on/run and depress brake pedal.
Place gearshift lever in neutral (N).(5) Attempt to start engine. If engine starts in
both neutral (N) or park (P), gearshift cable is
adjusted properly. No adjustment is required.
(6) If engine does not start in either park (P) or
neutral (N), perform adjustment procedure.
ADJUSTMENT
(1) Park the vehicle on level ground and set the
parking brake.
(2) Place the gearshift lever in gated park (P) and
remove ignition key.
(3) Loosen the cable adjustment screw at the
transaxle manual valve lever (Fig. 224).
(4) Pull the gearshift lever fully forward to the
park detent position.
(5) Release the park brake, then rock the vehicle
to assure it is in park. Reset the park brake.
(6) Tighten the cable adjustment screw to 8 N´m
(70 in. lbs.). Gearshift cable should now be properly
adjusted.
(7) Verify adjustment by using the verification pro-
cedure.
Fig. 223 Gearshift Cable at Transaxle
1 - MANUAL VALVE LEVER
2 - GEAR SHIFT CABLE
3 - UPPER MOUNT BRACKET
Fig. 224 Gearshift Cable Adjustment
1 - GEARSHIFT CABLE ADJUSTMENT SCREW
2 - GEARSHIFT CABLE
21 - 254 41TE AUTOMATIC TRANSAXLERS
GEAR SHIFT CABLE (Continued)
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OPERATION
The Brake/Transmission Shift Interlock (BTSI)
Solenoid prevents the transmission shift lever from
being moved out of PARK (P) unless the brake pedal
is applied. The BTSI solenoid is hardwired to and
controlled by the Intelligent Power Module (IPM).
Battery voltage is applied to one side of the solenoid
with the ignition key is in either the OFF, ON/RUN,
or START positions (Fig. 302). The ground side of the
solenoid is controlled by a driver within the IPM. It
relies on voltage supplied from the stop lamp switch
to the stop lamp sense circuit within the IPM to tell
when the brake pedal is depressed. When the brake
pedal is depressed, the ground circuit opens, de-ener-
gizing the solenoid. When the brake pedal is
released, the ground circuit is closed, energizing the
solenoid.
When the ignition key is in either the OFF,
ON/RUN, or START positions, the BTSI solenoid is
energized, and the solenoid plunger hook pulls the
shift lever pawl into position, prohibiting the shift
lever from moving out of PARK (P) (Fig. 303). When
the brake pedal is depressed, the ground circuit
opens, de-energizing the solenoid. This moves the
gearshift lever pawl out of the way (Fig. 304), allow-
ing the shift lever to be moved into any gear position.
Fig. 302 Ignition Key/Switch Positions
1 - ACC
2 - LOCK
3 - OFF
4 - ON/RUN
5-START
Fig. 303 Pawl Engaged to Shift Lever
1 - GEAR SHIFT LEVER
2 - GEAR SHIFT LEVER PAWL
Fig. 304 Pawl Disengaged From Shift Lever
1 - GEAR SHIFT LEVER
2 - GEAR SHIFT LEVER PAWL
21 - 276 41TE AUTOMATIC TRANSAXLERS
SHIFT INTERLOCK SOLENOID (Continued)
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A conventional mechanical interlock system is also
used. This system manually prohibits shifter move-
ment when the ignition switch is in the LOCK or
ACC positions. Solenoid operation is not required in
these key positions.
For intended BTSI system operation, refer to the
following chart:
ACTION EXPECTED RESPONSE
1. Turn key to the9OFF9
position.1. Shifter CAN be shifted
out of park with brake
pedal applied.
2. Turn key to the
9ON/RUN9position.2. Shifter CANNOT be
shifted out of park.
3. Turn key to the
9ON/RUN9position and
depress the brake pedal.3. Shifter CAN be shifted
out of park.
4. Leave shifter in any
gear and try to return key
to the9LOCK9or9ACC9
position.4. Key cannot be
returned to the9LOCK9or
9ACC9position.
5. Return shifter to
9PARK9and try to remove
the key.5. Key can be removed
(after returning to9LOCK9
position).
6. With the key removed,
try to shift out of9PARK9.6. Shifter cannot be
shifted out of9PARK9.
NOTE: Any failure to meet these expected
responses requires system adjustment or repair.
DIAGNOSIS AND TESTING - BRAKE/
TRANSMISSION SHIFT INTERLOCK SOLENOID
For intended BTSI system operation, refer to the
following chart:
ACTION EXPECTED RESPONSE
1. Turn key to the9OFF9
position.1. Shifter CAN be shifted
out of park with brake
pedal applied.
2. Turn key to the
9ON/RUN9position.2. Shifter CANNOT be
shifted out of park.
3. Turn key to the
9ON/RUN9position and
depress the brake pedal.3. Shifter CAN be shifted
out of park.
4. Leave shifter in any
gear and try to return key
to the9LOCK9or9ACC9
position.4. Key cannot be
returned to the9LOCK9or
9ACC9position.
5. Return shifter to
9PARK9and try to remove
the key.5. Key can be removed
(after returning to9LOCK9
position).
ACTION EXPECTED RESPONSE
6. With the key removed,
try to shift out of9PARK9.6. Shifter cannot be
shifted out of9PARK9.
NOTE: Any failure to meet these expected
responses requires system repair. Refer to the
appropriate Diagnostic Information.
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove instrument panel lower shroud (Fig.
305).
(3) Remove knee bolster (Fig. 306).
Fig. 305 Instrument Panel Lower Silencer
1 - INSTRUMENT PANEL LOWER SILENCER
Fig. 306 Knee Bolster
1 - KNEE BOLSTER
RS41TE AUTOMATIC TRANSAXLE21 - 277
SHIFT INTERLOCK SOLENOID (Continued)
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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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