ignition CHRYSLER CARAVAN 2005 Service Manual

The PCM uses crankshaft position reference to
determine injector sequence, ignition timing and the
presence of misfire. Once the PCM determines crank-
shaft position, it begins energizing the injectors in
sequence.
REMOVAL
(1) Disconnect the negative battery cable.
(2) Raise vehicle and support.
(3) Disconnect the electrical connector (Fig. 8).
(4) Remove crankshaft sensor bolt (Fig. 9).
(5) Remove the crankshaft sensor.
INSTALLATION - 2.4L
(1) Install the crankshaft sensor.
(2) Install crankshaft sensor bolt and tighten.
(3) Connect the electrical connector (Fig. 8).
(4) Lower vehicle.
(5) Connect the negative battery cable.
ENGINE SPEED SENSOR
DESCRIPTION
The PCM receives a signal from the TCM to indi-
cate vehicle speed on automatic transmission cars.
On 4 cylinder Manual transmission cars (if equipped)
vehicle, a dedicated vehicle speed sensor is connected
to the PCM.On V-6 Manual transmission cars (if
equipped) vehicle, the ABS module provides the sig-
nal to the PCM for vehicle speed.
OPERATION
The Transmission Control Module (TCM) supplies
the road speed and distance traveled inputs to the
PCM. From these inputs and the throttle position
sensor input, the PCM determines when a decelera-
tion condition occurs.
FUEL INJECTOR
DESCRIPTION
The injectors are positioned in the intake manifold
or cylinder head with the nozzle ends directly above
the intake valve port (Fig. 10).Fig. 8 CRANKSHAFT SENSOR 2.4L
Fig. 9 CRANKSHAFT POSITION SENSOR LOCATION
2.4L
Fig. 10 Fuel Injector Location - Typical
1 - FUEL RAIL
2 - INTAKE MANIFOLD
3 - FUEL INJECTORS
14 - 30 FUEL INJECTIONRS
CRANKSHAFT POSITION SENSOR (Continued)

(5) Rotate injector and pull injector out of fuel rail.
The clip will stay on the injector.
(6) Check injector O-ring for damage. If O-ring is
damaged, it must be replaced. If injector is reused, a
protective cap must be installed on the injector tip to
prevent damage. Replace the injector clip if it is dam-
aged.
(7) Repeat for remaining injectors.
INSTALLATION
INSTALLATION - 2.4L
The fuel rail must be removed first. Refer to Fuel
Injector Rail Removal in this section.
(1) Before installing an injector the rubber O-ring
must be lubricated with a drop of clean engine oil to
aid in installation.
(2) Install injector clip by sliding open end into the
top slot of the injector. The edge of the receiver cup
will slide into the side slots of clip.
(3) Install injector top end into fuel rail receiver
cap. Be careful not to damage O-ring during installa-
tion (Fig. 14).
(4) Repeat steps for remaining injectors.
(5) Connect fuel injector wiring.
INSTALLATION - 3.3/3.8L
(1) Before installing an injector the rubber O-ring
must be lubricated with a drop of clean engine oil to
aid in installation.
(2) Install injector clip by sliding open end into the
top slot of the injector. The edge of the receiver cup
will slide into the side slots of clip (Fig. 13).
(3) Install injector top end into fuel rail receiver
cap. Be careful not to damage O-ring during installa-
tion (Fig. 13).
(4) Repeat steps for remaining injectors.
(5) Install fuel rail, refer to Fuel Rail in the Fuel
Delivery section.
(6) Connect fuel injector wiring.
(7) Install the Intake Manifold, (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE MANIFOLD -
INSTALLATION)
(8) Connect the negative battery cable.
FUEL PUMP RELAY
DESCRIPTION
The fuel pump relay is located in the PDC. The
inside top of the PDC cover has a label showing relay
and fuse location.
OPERATION
The fuel pump relay supplies battery voltage to the
fuel pump. A buss bar in the Power Distribution Cen-
ter (PDC) supplies voltage to the solenoid side and
contact side of the relay. The fuel pump relay power
circuit contains a fuse between the buss bar in the
PDC and the relay. The fuse is located in the PDC.
Refer to the Wiring Diagrams for circuit information.
The PCM controls the fuel pump relay by switch-
ing the ground path for the solenoid side of the relay
on and off. The PCM turns the ground path off when
the ignition switch is in the Off position. When the
ignition switch is in the On position, the PCM ener-
gizes the fuel pump. If the crankshaft position sensor
does not detect engine rotation, the PCM de-ener-
gizes the relay after approximately one second.
Fig. 14 SERVICING FUEL INJECTOR TYPICAL
1 - FUEL INJECTOR
2 - LOCKING SLOT
3 - FUEL RAIL RECEIVER CUP
14 - 32 FUEL INJECTIONRS
FUEL INJECTOR (Continued)

OPERATION
The signal represents throttle blade position. As
the position of the throttle blade changes, the resis-
tance of the TPS changes.
The PCM supplies approximately 5 volts to the
TPS. The TPS output voltage (input signal to the
powertrain control module) represents throttle blade
position. The TPS output voltage to the PCM varies
from approximately 0.6 volt at minimum throttle
opening (idle) to a maximum of 4.5 volts at wide open
throttle.Along with inputs from other sensors, the PCM
uses the TPS input to determine current engine oper-
ating conditions. The PCM also adjusts fuel injector
pulse width and ignition timing based on these
inputs.
REMOVAL - 3.3/3.8L
(1) Disconnect the negative battery cable.
(2) Remove the electrical connector from the Inlet
Air Temperature sensor.
(3) Remove the air cleaner box lid. Remove hose
from throttle body.
(4) Disconnect the electrical connector at TPS.
(5) Disconnect the electrical connector at IAC.
(6) Remove the throttle and speed control cables
from throttle body.
(7) Remove 3 mounting bolts from throttle body.
(8) Remove throttle body.
(9) Disconnect the purge vacuum line from the
throttle body.
(10) Remove TPS from throttle body.
INSTALLATION - 3.3/3.8L
(1) Install TPS to throttle body.
(2) Disconnect the purge vacuum line from the
throttle body.
(3) Install throttle body.
(4) Install 3 mounting bolts from throttle body.
Tighten bolts.
(5) Install the throttle and speed control cables to
throttle body.
(6) Connect the electrical connector at TPS.
(7) Connect the electrical connector at IAC.
(8) Install the air cleaner box lid. Install hose to
throttle body.
(9) Install the electrical connector to the Inlet Air
Temperature sensor.
(10) Connect the negative battery cable.
Fig. 31 Throttle Position SensorÐ3.3/3.8L Engine
1 - Idle Air Control Valve
2 - Throttle Position Sensor
RSFUEL INJECTION14-41
THROTTLE POSITION SENSOR (Continued)

COLUMN
TABLE OF CONTENTS
page page
COLUMN
DESCRIPTION - STEERING COLUMN.......10
WARNING
WARNINGS AND CAUTIONS.............10
DIAGNOSIS AND TESTING - STEERING
COLUMN............................11
REMOVAL.............................11
INSTALLATION.........................16
SPECIFICATIONS
COLUMN FASTENER TORQUE...........17
IGNITION SWITCH
REMOVAL.............................17
INSTALLATION.........................19
KEY/LOCK CYLINDER
DESCRIPTION.........................20OPERATION...........................20
REMOVAL.............................20
INSTALLATION.........................20
SHROUD - LOWER
REMOVAL.............................21
INSTALLATION.........................21
SHROUD - UPPER
REMOVAL.............................22
INSTALLATION.........................22
STEERING WHEEL
REMOVAL.............................23
INSTALLATION.........................24
COLUMN
DESCRIPTION - STEERING COLUMN
The steering column has been designed to be ser-
viced as a complete assembly (Fig. 1) except for the
following serviceable components:²Key cylinder
²Ignition switch
²Multi-function switch
²Clockspring
²Halo
²Speed control switches
²Driver airbag
²Trim shrouds
²Steering wheel
²Intermediate shaft
These components of the steering column can be
serviced without requiring removal of the steering
column from the vehicle.
WARNING
WARNINGS AND CAUTIONS
(Refer to 8 - ELECTRICAL/RESTRAINTS - WARN-
ING)
WARNING: BEFORE BEGINNING ANY SERVICE
PROCEDURES THAT INVOLVES REMOVING THE
AIR BAG. REMOVE AND ISOLATE THE NEGATIVE
(-) BATTERY CABLE (GROUND) FROM THE VEHI-
CLE BATTERY. THIS IS THE ONLY SURE WAY TO
DISABLE THE AIR BAG SYSTEM. FAILURE TO DO
THIS COULD RESULT IN ACCIDENTAL AIR BAG
DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
Fig. 1 Steering Column
1 - STEERING COLUMN
2 - UPPER MOUNTING NUTS
3 - LOWER MOUNTING NUTS
4 - MOUNTING STUDS
19 - 10 COLUMNRS

(19) Disconnect the column harness wiring connec-
tors from the Brake Transmission Shift Interlock
(BTSI) and ignition switch (Fig. 11).
(20) Disconnect the column harness wiring connec-
tor for the multi-function switch (Fig. 12).(21) Disconnect the column harness wiring connec-
tors for the clockspring and SQUIB (Fig. 12).
(22) If equipped with Sentry Key Immobilizer, dis-
connect the wiring connector from the SKIM (Fig.
13).
(23) Remove screw fastening horn ground wire to
column (Fig. 14).
Fig. 11 Ignition Switch And BTSI Wiring
Connections
1 - WIRING CONNECTOR
2 - IGNITION SWITCH
3 - BTSI
4 - WIRING CONNECTOR
Fig. 12 Multi-function And Clockspring Wiring
Connections
1 - MULTI-FUNCTION SWITCH MOUNTING HOUSING
2 - MULTI-FUNCTION WIRING CONNECTOR
3 - CLOCKSPRING WIRING CONNECTOR
4 - CLOCKSPRING SQUIB WIRING CONNECTOR
Fig. 13 Sentry Key Immobilizer Module
1 - WIRING CONNECTOR
2 - IGNITION KEY CYLINDER HALO
3 - SKIM
4 - MOUNTING SCREW
Fig. 14 Horn Ground At Column
1 - STEERING COLUMN
2 - HORN GROUND WIRE
3 - SCREW
19 - 14 COLUMNRS
COLUMN (Continued)

(31) If the steering column is being replaced, slide
the multi-function switch mounting housing off the
column (Fig. 19).
(32) If the steering column is being replaced,
remove the mounting screw fastening the SKIM to
the ignition key cylinder housing (Fig. 13). Remove
the SKIM.
(33) If the steering column is being replaced,
remove the halo from the ignition key cylinder hous-
ing (Fig. 13).
(34) If the steering column is being replaced,
remove the ignition key lock cylinder (Refer to 19 -
STEERING/COLUMN/KEY/LOCK CYLINDER -
REMOVAL).
INSTALLATION
NOTE: Before proceeding, (Refer to 19 - STEERING/
COLUMN - WARNING)(Refer to 8 - ELECTRICAL/RE-
STRAINTS/DRIVER AIRBAG - REMOVAL).
NOTE: Make sure the front wheels of the vehicle are
still in the STRAIGHT AHEAD position before begin-
ning the column installation procedure.
(1) If removed, install the ignition key lock cylin-
der (Refer to 19 - STEERING/COLUMN/KEY/LOCK
CYLINDER - INSTALLATION).
(2) If removed, install the halo on the ignition key
cylinder housing (Fig. 13).(3) If removed, install SKIM (Fig. 13). Install the
mounting screw fastening the SKIM to the ignition
key cylinder housing. Tighten the screw to 4 N´m (30
in. lbs.) torque.
(4) If removed, slide the multi-function switch
mounting housing onto the column (Fig. 19).
(5) If multi-function switch mounting housing is
being installed, install the set-screw fastening the
housing to the column (Fig. 18). Tighten the set-
screw to 14 N´m (124 in. lbs.) torque.
(6) Install the steering column (Fig. 17). Slide the
column lower mounting slots over the lower mount-
ing studs (with nuts started) first, then lift column
into place over the upper mounting studs.
(7) Install the two upper mounting nuts (Fig. 17).
Tighten the two upper mounting nuts, then the two
lower mounting nuts to 12 N´m (105 in. lbs.) torque.
(8) Match the column shaft coupling to the inter-
mediate shaft and install the pinch bolt (Fig. 16).
Tighten the pinch bolt nut to 28 N´m (250 in. lbs.)
torque. Install the hair pin in the end of the pinch
bolt.
(9) Feed the shift cable through the bracket on the
column (Fig. 15), then install the clip fastening the
cable housing to the bracket.
(10) Connect the shift cable to the lever pin (Fig.
15).
(11) Install the screw fastening the horn ground
wire to the column (Fig. 14). Tighten the screw to 7
N´m (60 in. lbs.) torque.
(12) If equipped with Sentry Key Immobilizer, con-
nect the wiring connector to the SKIM (Fig. 13).
(13) Connect the column harness wiring connectors
for the clockspring and SQUIB (Fig. 12).
(14) Connect the column harness wiring connector
for the multi-function switch (Fig. 12).
(15) Connect the column harness wiring connectors
for the Brake Transmission Shift Interlock (BTSI)
and ignition switch (Fig. 11).
(16) Install the fixed shroud (Fig. 10). Install the
screws fastening the fixed shroud in place and
tighten the screws to 3 N´m (23 in. lbs.) torque.
(17) If equipped with Autostick, connect the wiring
connector (Fig. 9).
(18) If equipped with traction control, position the
upper shroud above the column and route the switch
wiring down around the column. Connect the wiring
connector from the column wiring harness to the
traction control switch wiring (attached to upper
shroud) (Fig. 9).
Fig. 19 Multi-Function Switch Mounting Housing
1 - MULTI-FUNCTION SWITCH MOUNTING HOUSING
2 - STEERING COLUMN
19 - 16 COLUMNRS
COLUMN (Continued)

(19) Position the lower shroud on the column (Fig.
8). Install the lower shroud mounting screw. Tighten
the screw to 2 N´m (17 in. lbs.) torque.
(20) If equipped with adjustable pedals, Connect
the wiring connector for the switch (Fig. 7) to the col-
umn wiring harness.
(21) Position the upper shroud on top of the lower
shroud and snap it into place. Install the upper
shroud mounting screws (Fig. 6). Tighten the screws
to 2 N´m (17 in. lbs.) torque.
(22) Inspect shroud mating surfaces for excessive
gaps and correct as necessary.
(23) Install the cluster trim bezel (Refer to 23 -
BODY/INSTRUMENT PANEL/CLUSTER BEZEL -
INSTALLATION).
(24) Install the knee blocker/steering column cover
plate. (Refer to 23 - BODY/INSTRUMENT PANEL/
KNEE BLOCKER - INSTALLATION)
(25) Install the parking brake handle link.
(26) Install the knee blocker/steering column open-
ing cover. (Refer to 23 - BODY/INSTRUMENT PAN-
EL/STEERING COLUMN OPENING COVER -
INSTALLATION)
(27) Align the splines and install the steering
wheel on the steering column shaft(Refer to 19 -
STEERING/COLUMN/STEERING WHEEL -
INSTALLATION).
(28) Install the damper over the steering column
shaft (Fig. 4).
(29) Install the steering wheel retaining bolt (Fig.
4). Tighten the bolt to 61 N´m (45 ft. lbs.) torque.
(30) If the steering wheel is equipped with remote
audio controls, connect the wiring connector to the
clockspring (Fig. 4).
(31) Connect the two squib connectors to the
driver airbag (Fig. 3). The connectors are color coded
to avoid connector mix-up.
(32) Connect the speed control and horn connector
to the clockspring (Fig. 3).
(33) Install the airbag to the steering wheel.
Install the driver airbag mounting screws (Fig. 2).
Tighten screws to 10 N´m (90 in. lbs.) torque.
(34) Connect the battery negative (ground) cable to
battery post following special Diagnosis And Testing
procedure. (Refer to 8 - ELECTRICAL/RESTRAINTS
- DIAGNOSIS AND TESTING)
(35) Check operation of all steering column
mounted components.
(36) Road test vehicle to ensure proper operation
of steering.SPECIFICATIONS
COLUMN FASTENER TORQUE
DESCRIPTION N´mFt.
Lbs.In.
Lbs.
Driver Airbag Mounting Screws 10 Ð 90
Multi-Function Switch Mounting
Housing Set-Screw14 Ð 124
Shroud Attaching Screws - Fixed 3 Ð 23
Shroud Attaching Screws -
Lower/Upper2Ð17
SKIM Attaching Screw 4 Ð 30
Steering Column Coupling Pinch
Bolt28 Ð 250
Steering Column Mounting Nuts 12 Ð 105
Steering Wheel Retaining Bolt 61 45 Ð
IGNITION SWITCH
REMOVAL
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig.
20). For ignition switch terminal and circuit identifi-
cation, refer to the appropriate wiring information.
The wiring information includes wiring diagrams,
proper wire and connector repair procedures, further
details on wire harness routing and retention, as well
as pin-out and location views for the various wire
harness connectors, splices and grounds.
(1) Disconnect negative cable from battery.
Fig. 20 Ignition SwitchÐViewed From Below
Column
1 - IGNITION SWITCH
2 - LOCK CYLINDER HOUSING
3 - RETAINING TABS
RSCOLUMN19-17
COLUMN (Continued)

(2) Remove steering column cover retaining screws
(Fig. 21).
(3) Remove parking brake release cable from han-
dle (Fig. 22).
(4) Remove screws holding steering column
shrouds (Fig. 23)and remove lower shroud.
(5) Place key cylinder in RUN position. Depress
lock cylinder retaining tab and remove key cylinder
(Fig. 24).
Fig. 21 Steering Column Cover
1 - SCREWS
2 - STEERING COLUMN COVER
Fig. 22 Parking Brake Release Cable
1 - PARKING BRAKE CABLE
2 - PARKING BRAKE HANDLE
Fig. 23 Steering Column Shroud Screws
1 - STEERING WHEEL
2 - SCREWS
3 - LOWER STEERING COLUMN SHROUD
Fig. 24 Lock Cylinder Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
19 - 18 COLUMNRS
IGNITION SWITCH (Continued)

(6) Remove ignition switch mounting screw (Fig.
25) with a #10 Torxttamper proof bit.
(7) Depress retaining tab (Fig. 21) or (Fig. 26) and
gently pry ignition switch from steering column (Fig.
27).
(8) Disconnect electrical connectors from ignition
switch and remove switch (Fig. 28).
INSTALLATION
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig.
20). For ignition switch terminal and circuit identifi-
cation, refer to the Wiring Diagrams section.
(1) Ensure the ignition switch is in the RUN posi-
tion and the actuator shaft in the lock housing is in
the RUN position.(2) Install electrical connectors to ignition switch.
(3) Carefully install the ignition switch. The
switch will snap over the retaining tabs (Fig. 29).
Install mounting screw (Fig. 25).
(4) Install upper and lower shrouds.
(5) Install key cylinder (cylinder retaining tab will
depress only in the RUN position).
Fig. 25 Ignition Switch Mounting Screw
1 - MOUNTING SCREW
2 - IGNITION SWITCH
Fig. 26 Ignition Switch Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 27 Removing Ignition Switch
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 28 Ignition Switch Connectors
1 - KEY IN SWITCH
2 - PRNDL SWITCH
3 - IGNITION SWITCH
RSCOLUMN19-19
IGNITION SWITCH (Continued)

(6) Connect negative cable to battery.
(7) Check for proper operation of ignition switch
and key-in warning switch.
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. 30) :
²Accessory
²Off (lock)
²Unlock
²On/Run
²Start
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove steering column cover retaining
screws.
(3) Remove screws holding steering column
shrouds and remove lower shroud.
(4) Place key cylinder in RUN position. Depress
lock cylinder retaining tab on the bottom of the lock
housing and remove key cylinder.
INSTALLATION
(1) Install key in lock cylinder. Turn key to run
position (retaining tab on lock cylinder can be
depressed).(2) The shaft at the end of the lock cylinder aligns
with the socket in the end of the housing. To align
the socket with the lock cylinder, ensure the socket is
in the Run position (Fig. 31).
(3) Align the lock cylinder with the grooves in the
housing. Slide the lock cylinder into the housing
until the tab sticks through the opening in the hous-
ing.
(4) Turn the key to the Off position. Remove the
key.
(5) Install lower steering column shroud.
(6) Install steering column cover.
(7) Connect negative cable to battery.
Fig. 29 Ignition Switch Installation
1 - IGNITION SWITCH
2 - ACTUATOR SHAFT
3 - RETAINING TABS
Fig. 30 Ignition Lock Cylinder Detents
Fig. 31 Socket in Lock Cylinder Housing
1 - LOCK CYLINDER HOUSING
2 - SOCKET
19 - 20 COLUMNRS
IGNITION SWITCH (Continued)