2002 CHRYSLER CARAVAN ignition

(3) Carefully install the ignition switch. The
switch will snap over the retaining tabs (Fig. 16) .
Install mounting screw (Fig. 12).
(4) Install upper and lower shrouds.
(5) Install key cylinder (cylinder retaining tab will
depress only in the RUN position).
(6) Connect negative cable to battery.(7) Check for proper operation of ignition switch
and key-in warning switch.
LOCK CYLINDER HOUSING
DESCRIPTION - IGNITION INTERLOCK
All vehicles equipped with automatic transaxles
have an interlock system. The system prevents shift-
ing the vehicle out of Park unless the ignition lock
cylinder is in the Unlock, Run or Start position. In
addition, the operator cannot rotate the key to the
lock position unless the shifter is in the park posi-
tion. On vehicles equipped with floor shift refer to
the - Transaxle for Automatic Transmission Shifter/
Ignition Interlock.
REMOVAL
(1) Disconnect negative (ground) cable from the
battery and isolate cable from battery terminal.
(2) Remove the screws attaching the lower steer-
ing column cover to the instrument panel (Fig. 17),
then remove the cover from the lower instrument
panel.
Fig. 15 Ignition Switch Connectors
1 - KEY IN SWITCH
2 - PRNDL SWITCH
3 - IGNITION SWITCH
Fig. 16 Ignition Switch Installation
1 - IGNITION SWITCH
2 - ACTUATOR SHAFT
3 - RETAINING TABS
Fig. 17 Lower Steering Column Cover Attachment
1 - PARK BRAKE RELEASE HANDLE
2 - STEERING COLUMN COVER
3 - STEERING COLUMN
4 - ATTACHING CLIP
5 - ATTACHING SCREWS
6 - HOOD RELEASE LEVER
7 - ATTACHING SCREWS
RSCOLUMN19-17
IGNITION SWITCH (Continued)
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(8) Remove the two screws holding the metal cover
in place below the shifter/ignition interlock linkage
(Fig. 22), then remove the cover.
(9) Disconnect the shifter/ignition interlock link
from the lever on the lock cylinder housing (Fig. 23).
(10) Remove the key cylinder. To do this:
²Turn the key placing the key cylinder in the ON
position.²Depress and hold the retaining tab on the bot-
tom of the lock cylinder housing (Fig. 24).
²Pull the key cylinder straight out of the lock cyl-
inder housing.
(11) Remove the vehicle wiring harness connector
from the key cylinder halo lamp (Fig. 25).
(12) Remove the key cylinder halo lamp from the
lock cylinder housing.
Fig. 22 Cover Removal/Installation
1 - IGNITION SWITCH
2 - SCREW
3 - COVER
Fig. 23 Shifter/Ignition Interlock Linkage
Disconnected
1 - LEVER
2 - LINK
3 - LOCK CYLINDER HOUSING
Fig. 24 Cylinder Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 25 Wiring Harness Connection To Halo Lamp
1 - IGNITION SWITCH
2 - STEERING COLUMN ASSEMBLY
3 - WIRING HARNESS CONNECTOR
4 - IGNITION SWITCH HALO LIGHT
RSCOLUMN19-19
LOCK CYLINDER HOUSING (Continued)
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(13) Remove the ignition switch mounting screw
(Fig. 26).
(14) Depress the two retaining tabs (Fig. 27), then
remove the ignition switch from the lock cylinder
housing.
(15) Disconnect both tilt mechanism springs from
their mounting posts on the tilt housing (Fig. 28),
then move them to the side out of the way (Fig. 29).
(16) While supporting the lock cylinder housing,
remove both mounting screws securing the lock cyl-
inder housing to the column (Fig. 29).
(17) Remove the lock cylinder housing from the
bottom of the steering column.
INSTALLATION
(1) Install the lock cylinder housing in the bottom
of the steering column lining up the mounting holes.
(2) Install the self-tapping lock cylinder housing
mounting screws through the top of the column into
the housing (Fig. 29) . Tighten the two mounting
screws to a torque of 11 N´m (100 in. lbs.).
(3) Connect both tilt mechanism springs back onto
their mounting posts making sure the spring hooks
engage the grooves in the posts (Fig. 28) .
(4) Ensure that the ignition switch and the actua-
tor shaft in the lock cylinder housing are in the ON
position.
Fig. 26 Ignition Switch Mounting Screw
1 - MOUNTING SCREW
2 - IGNITION SWITCH
Fig. 27 Ignition Switch Retaining Tabs
1 - IGNITION SWITCH
2 - LOCK CYLINDER HOUSING
3 - RETAINING TABS
Fig. 28 Tilt Mechanism Spring Removal/Installation
1 - SPRINGS
2 - POST
3 - GROOVE
Fig. 29 Lock Cylinder Housing Mounting Screw
Location
1 - SPRINGS
2 - MOUNTING SCREWS
19 - 20 COLUMNRS
LOCK CYLINDER HOUSING (Continued)
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(5) Carefully install the ignition switch over the
actuator shaft (Fig. 30) . The switch will snap over
the retaining tabs on the housing.
(6) Install the ignition switch mounting screw (Fig.
26) .
(7) Install the key cylinder halo lamp on the lock
cylinder housing.
(8) Install the vehicle wiring harness connector
onto the key cylinder halo lamp (Fig. 25) .
(9) Install the key cylinder (with key in it turned
to the ON position) by sliding it straight into the lock
cylinder housing aligning the retaining tab on the
key cylinder with the hole in the lock cylinder hous-
ing.
(10) Turn the key to the OFF position and remove
the key.
(11) Connect the shifter/ignition interlock link to
the lever on the lock cylinder housing by aligning the
retaining tab on the lever with the ramp on the link
(Fig. 23) , then pushing the two together.
(12) Install the metal cover in place below the
shifter/ignition interlock linkage using the two
screws (Fig. 22) .
(13) Install the steering column fixed shroud on
the steering column (Fig. 21) using its 2 mounting
screws.
(14) Install the trim bezel on the instrument panel
above the steering column. The trim bezel is
mounted to the instrument panel using 2 screws (one
on each side of the column) and retaining clips.
(15) Install the lower steering column shroud on
the steering column. Install and securely tighten the
center screw attaching the lower shroud to the tilt
head on the column (Fig. 20) .(16) Install the upper steering column shroud over
the tilt head of the steering column snapping it into
place on the lower shroud. Install and securely
tighten the 2 remaining screws attaching the upper
shroud to the lower shroud (Fig. 20) .
(17) Install the steering column cover liner on the
instrument panel below the steering column (Fig. 19)
. Install and securely tighten the 10 bolts attaching
the steering column cover liner to the instrument
panel.
(18) Install the parking brake pedal release cable
on the parking brake release lever in the lower steer-
ing column cover (Fig. 18) .
(19) Install the lower steering column trim cover
on the instrument panel below the steering column.
Install and securely the screws attaching the lower
steering column cover to the instrument panel (Fig.
17) .
(20) Connect the negative (ground) cable on the
battery terminal.
KEY/LOCK CYLINDER
DESCRIPTION
The lock cylinder is inserted in the end of the
housing opposite the ignition switch.
OPERATION
The ignition key rotates the cylinder to 5 different
detents (Fig. 31) :
²Accessory
²Off (lock)
²Unlock
²On/Run
²Start
Fig. 30 Ignition Switch Installation
1 - IGNITION SWITCH
2 - ACTUATOR SHAFT
3 - RETAINING TABS
Fig. 31 Ignition Lock Cylinder Detents
RSCOLUMN19-21
LOCK CYLINDER HOUSING (Continued)
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(17) Remove the 3 bolts and nuts mounting the
steering gear to the front suspension cradle (Fig. 8).
NOTE: The next step must be done to allow the
removal of the steering gear from the front suspen-
sion cradle. The steering gear can not be removed
from the vehicle with the intermediate coupler
attached to the steering gear.
(18) Lower steering gear from suspension cradle
enough to allow access to the intermediate coupler
roll pin (Fig. 9). Install Remover/Installer Special
Tool 6831A through the center of the roll pin, secur-
ing with the knurled nut (Fig. 9). Hold threaded rod
stationary while turning nut, this will pull the roll
pin out of the intermediate coupler.
(19) Separate the coupler from the shaft of the
steering gear.(20) Remove the power steering gear from the
vehicle.
REMOVAL - RHD 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.
CAUTION: Locking the steering column in the
straight-ahead position will prevent the clockspring
from being accidentally over-extended when the
steering column is disconnected from the interme-
diate steering coupler.
(3) Position the steering wheel in the STRAIGHT-
AHEAD position. Lock the steering wheel in place
using a steering wheel holding tool.
(4) With the ignition key in the locked position
turn the steering wheel to the left until the steering
wheel is in the locked position.
(5) With the vehicle on the ground, disconnect the
steering column shaft coupler from the steering gear
intermediate coupler (Fig. 2).
(6) Raise vehicle. (Refer to LUBRICATION &
MAINTENANCE/HOISTING - STANDARD PROCE-
DURE)
(7) Remove front wheel and tire assemblies.
(8) If power steering cooler equipped, remove a
hose at power steering cooler and allow fluid to
drain.
(9) Remove 2 bolts attaching power steering cooler
to cradle crossmember reinforcement (Fig. 3).
(10) On both sides of vehicle, remove nut attaching
outer tie rod end to steering knuckle (Fig. 4).
Remove nut by holding tie rod end stud with a
socket while loosening and removing nut with
wrench.
(11) Remove both tie rod ends from steering
knuckles using Puller, Special Tool C-3894±A (Fig. 5).
(12) Remove the lower control arm rear bushing
retainer bolts located on each side of each lower con-
trol arm rear bushing.
NOTE: The bolts fastening the cradle crossmember
reinforcement are of two different thread sizes. Note
the location of the various sizes.
(13) Remove the bolts attaching the cradle cross-
member reinforcement to the front suspension cradle
crossmember (Fig. 6). Remove the 2 bolts fastening
the reinforcement and rear of cradle crossmember to
the body of the vehicle. Remove the reinforcement.
(14) If the vehicle is equipped with All-Wheel-
Drive, remove the power transfer unit (Refer to 21 -
TRANSMISSION/TRANSAXLE/POWER TRANSFER
UNIT - REMOVAL).
Fig. 6 Cradle Crossmember Reinforcement
Attachment
1 - STEERING GEAR
2 - RIGHT LOWER CONTROL ARM
3 - LEFT LOWER CONTROL ARM
4 - CRADLE CROSSMEMBER REINFORCEMENT
5 - REAR CRADLE CROSSMEMBER ISOLATOR BUSHING
6 - STABILIZER BAR
7 - CRADLE CROSSMEMBER
RSGEAR19-29
GEAR (Continued)
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ADJUSTMENTS
GEARSHIFT CABLE ADJUSTMENT
Lift and rotate the gearshift hand lever into the
park (P) gate position and remove the ignition key.
This confirms the shift lever is in the gated park (P)
position.
After confirming the park gate position, turn the
ignition switch . If the starter will operate, the park
gate position is correct. Move the shift lever into the
neutral (N) position. If the starter will operate in this
position, the linkage is properly adjusted. If the
starter fails to operate in either position, linkage
adjustment is required.
(1) Park the vehicle on level ground and set the
parking brake.
(2) Place the gearshift lever in park (P) gate posi-
tion and remove key.
(3) Loosen the cable adjustment screw at the
transaxle operating lever (Fig. 181).
(4) Pull the transaxle operating lever fully forward
to the park detent position.
(5) Release the park brake, then rock the vehicle
to assure it is in park lock. 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 PRNDL indicator still displays the corre-
sponding gear completely. If not, readjustment of
PRNDL may be required.
(8) Check adjustment by using the preceding pro-
cedure.
GOVERNOR
DESCRIPTION
The governor assembly is fastened to the transaxle
transfer shaft. It consists of a governor body, weight,
valve, and shaft.
OPERATION
The governor meters hydraulic pressure, and this
metered pressure is used to signal the transmission
when it is time for a shift to occur. It does this by
balancing governor pressure on one side of a shift
valve, and throttle pressure on the other. When gov-
ernor pressure increases far enough to overcome the
throttle pressure on the valve, a shift occurs.
With the gearshift selector in a forward driving
range, line pressure flows from the manual valve and
down to the governor valve. When the output shaft
starts to rotate with vehicle motion, the governor
weight assembly will start to move outward due to
centrifugal force. As the weight is moved outward, it
will pull the valve with it until the land of the valve
uncovers the line pressure port. As the port begins to
become uncovered, governor pressure is metered. As
the vehicle's speed continues to increase, the weight
assembly will be at a point at which governor pres-
sure is acting on the left side of the reaction area of
the valve. This produces sufficient force to compress
the spring and allow the outer weight to move out
against the outer governor body retaining ring. At a
very high speed, the governor valve will be opened as
far as possible. In this condition, it is possible for
governor pressure to meet, but not to exceed, line
pressure. Generally governor pressure ranges from
0-100 psi from idle to maximum speed, and rises pro-
portionally with the increase in output shaft speed.
Governor pressure and throttle pressure are acting
upon the shift valves to determine when a shift will
occur. Governor pressure is a direct indication of road
speed, and throttle pressure is an indication of
engine load. When both parameters have been met
by the throttle and governor pressures, an upshift or
downshift will occur.
CLEANING
Thoroughly clean all the governor parts in a suit-
able cleaning solution but do not use any type of
caustic cleaning agents.
The governor weight components and the governor
valve, must slide freely in their bores when clean and
dry. Minor surface scratches and burrs can be
smoothed with crocus cloth.
INSPECTION
The aluminum governor valve and outer weight
have a hard coating on them. Check condition of this
Fig. 181 Gearshift Cable Adjustment
1 - SHIFT CABLE ADJUSTMENT
2 - SHIFT CABLE
21 - 104 31TH AUTOMATIC TRANSAXLERS
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ASSEMBLY
(1) Install low/reverse servo assembly (Fig. 208).
(2) Install low/reverse servo snap ring (Fig. 205).
SHIFT INTERLOCK SOLENOID
DESCRIPTION
The Brake/Transmission Shift Interlock system
consists of an electro-magnetic solenoid mounted to
the steering column (Fig. 209). The solenoid's plunger
consists of an integrated hook, which operates the
shift lever pawl (part of shift lever assembly), and a
plunger return spring (Fig. 210). The solenoid also
has an integrated bracket, which facilitates fastening
to the steering column.
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. 211). 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.
Fig. 208 Low/Reverse Servo Assembly
1 - SERVO PISTON
2 - SPRINGFig. 209 Brake/Transmission Shift Interlock (BTSI)
Solenoid Location
1 - BTSI SOLENOID
Fig. 210 Solenoid Plunger and Return Spring
1 - PLUNGER
2 - RETURN SPRING
3 - BTSI SOLENOID
RS31TH AUTOMATIC TRANSAXLE21 - 115
SERVO - LOW/REVERSE (Continued)
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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. 212). 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. 213), allow-
ing the shift lever to be moved into any gear position.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.
Fig. 211 Ignition Key/Switch Positions
1 - ACC
2 - LOCK
3 - OFF
4 - ON/RUN
5-START
Fig. 212 Pawl Engaged to Shift Lever
1 - GEAR SHIFT LEVER
2 - GEAR SHIFT LEVER PAWL
Fig. 213 Pawl Disengaged From Shift Lever
1 - GEAR SHIFT LEVER
2 - GEAR SHIFT LEVER PAWL
21 - 116 31TH AUTOMATIC TRANSAXLERS
SHIFT INTERLOCK SOLENOID (Continued)
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