2004 CHRYSLER VOYAGER ABS

weather, high pressure area. This is important
because as air pressure changes the barometric pres-
sure changes. Barometric pressure and altitude have
a direct inverse correlation, as altitude goes up baro-
metric goes down. The first thing that happens as
the key is rolled on, before reaching the crank posi-
tion, the PCM powers up, comes around and looks at
the MAP voltage, and based upon the voltage it sees,
it knows the current barometric pressure relative to
altitude. Once the engine starts, the PCM looks at
the voltage again, continuously every 12 milliseconds,
and compares the current voltage to what it was at
key on. The difference between current and what it
was at key on is manifold vacuum.
During key On (engine not running) the sensor
reads (updates) barometric pressure. A normal range
can be obtained by monitoring known good sensor in
you work area.
As the altitude increases the air becomes thinner
(less oxygen). If a vehicle is started and driven to a
very different altitude than where it was at key On
the barometric pressure needs to be updated. Any
time the PCM sees Wide Open throttle, based upon
TPS angle and RPM it will update barometric pres-
sure in the MAP memory cell. With periodic updates,
the PCM can make its calculations more effectively.
The PCM uses the MAP sensor to aid in calculat-
ing the following:
²Barometric pressure
²Engine load
²Manifold pressure
²Injector pulse-width
²Spark-advance programs
²Shift-point strategies (F4AC1 transmissions
only, via the PCI bus)
²Idle speed²Decel fuel shutoff
The PCM recognizes a decrease in manifold pres-
sure by monitoring a decrease in voltage from the
reading stored in the barometric pressure memory
cell. The MAP sensor is a linear sensor; as pressure
changes, voltage changes proportionately. The range
of voltage output from the sensor is usually between
4.6 volts at sea level to as low as 0.3 volts at 26 in. of
Hg. Barometric pressure is the pressure exerted by
the atmosphere upon an object. At sea level on a
standard day, no storm, barometric pressure is 29.92
in Hg. For every 100 feet of altitude barometric pres-
sure drops .10 in. Hg. If a storm goes through it can
either add, high pressure, or decrease, low pressure,
from what should be present for that altitude. You
should make a habit of knowing what the average
pressure and corresponding barometric pressure is
for your area.REMOVAL
REMOVAL - 2.4L
(1) Disconnect the negative battery cable.
(2) Disconnect electrical connector and vacuum
hose from MAP sensor (Fig. 20).
(3) Remove two screws holding sensor to the
intake manifold.
REMOVAL - 3.3/3.8L
(1) Disconnect the negative battery cable.
(2) Remove vacuum hose and mounting screws
from manifold absolute pressure (MAP) sensor (Fig.
21).
(3) Disconnect electrical connector from sensor.
Remove sensor.
INSTALLATION
INSTALLATION - 2.4L
(1) Install sensor.
(2) Install two screws and tighten.
(3) Connect the electrical connector and vacuum
hose to the MAP sensor (Fig. 20).
(4) Connect the negative battery cable.
INSTALLATION - 3.3/3.8L
(1) Install sensor (Fig. 21).
(2) Install screws and tighten toPLASTIC MAN-
IFOLD 1.7 N´m (15 in. lbs.) ALUMINUM MANI-
FOLD 3.3 N´m (30 in. lbs.).
(3) Connect the electrical connector to the sensor.
Install vacuum hose.
(4) Connect the negative battery cable.
Fig. 21 MAP SENSOR - 3.3/3.8L
RSFUEL INJECTION14-31
MAP SENSOR (Continued)

(10) Install the coupling onto the intermediate
shaft and install the pinch bolt. Tighten the pinch
bolt to 28 N´m (250 in. lbs.).
(11) Install the cable from the bracket on the col-
umn, then install the pinch side clips.
(12) Reconnect the shift cable at the lever.
(13) Reconnect the wiring harness connectors to
the clockspring, multi-function switch, halo lamp,
SKIM module, ignition switch and BTSI solenoid.
(14) Install the steering wheel (Refer to 19 -
STEERING/COLUMN/STEERING WHEEL -
INSTALLATION).
(15) Install the vibration damper weight.
(16) Install the steering wheel retaining nut.
Tighten the nut to 61 N´m (45 ft. lbs.)
(17) Install the airbag (Refer to 8 - ELECTRICAL/
RESTRAINTS/DRIVER AIRBAG - INSTALLATION).
(18) Install the knee blocker reinforcement (Refer
to 23 - BODY/INSTRUMENT PANEL/KNEE
BLOCKER - INSTALLATION).
(19) Install the parking brake handle link.
(20) Install the knee blocker (Refer to 23 - BODY/
INSTRUMENT PANEL/STEERING COLUMN
OPENING COVER - INSTALLATION).
(21) Install the cluster trim bezel (Refer to 23 -
BODY/INSTRUMENT PANEL/CLUSTER BEZEL -
INSTALLATION).
(22) Install the upper shroud (Refer to 19 -
STEERING/COLUMN/LOWER SHROUD - INSTAL-
LATION).
(23) Install the traction off switch.
(24) Install the lower shroud.
SPECIFICATIONS
COLUMN TORQUE
DESCRIPTION N´mFt.
Lbs.In.
Lbs.
Driver Airbag Attaching Bolts 10 Ð 90
Steering Column Coupling
Pinch Bolt28 Ð 250
Steering Column Mounting
Nuts12 Ð 105
Steering Wheel Retaining
Nut61 45 Ð
IGNITION SWITCH
REMOVAL
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig. 7).
For ignition switch terminal and circuit identifica-
tion, 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 har-
ness connectors, splices and grounds.
(1) Disconnect negative cable from battery.
(2) Remove steering column cover retaining screws
(Fig. 8).
Fig. 7 Ignition SwitchÐViewed From Below Column
1 - IGNITION SWITCH
2 - LOCK CYLINDER HOUSING
3 - RETAINING TABS
Fig. 8 Steering Column Cover
1 - SCREWS
2 - STEERING COLUMN COVER
19 - 14 COLUMNRS
COLUMN (Continued)

INSTALLATION
The ignition switch attaches to the lock cylinder
housing on the end opposite the lock cylinder (Fig. 7)
. For ignition switch terminal and circuit identifica-
tion, 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. 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.
Fig. 13 Ignition Switch Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 14 Removing Ignition Switch
1 - IGNITION SWITCH
2 - RETAINING TAB
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
19 - 16 COLUMNRS
IGNITION SWITCH (Continued)

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
NOTE: Before proceeding, review all Steering Col-
umn and Airbag Warnings and Cautions. (Refer to
19 - STEERING/COLUMN - WARNING)(Refer to 8 -
ELECTRICAL/RESTRAINTS - WARNING)
(1) Remove battery ground cable terminal from
battery negative post and isolate.
(2) Under instrument panel, remove silencer panel
below lower steering column cover.
(3) Remove screws securing lower steering column
cover/knee blocker, then remove it (Fig. 17).
(4) Disconnect parking brake release link at
release handle.
(5) Compress tabs on sides of data link diagnostic
connector and remove it from knee blocker reinforce-
ment plate.(6) Remove screws securing knee blocker reinforce-
ment plate in place, then remove reinforcement plate
(Fig. 17).
(7) Remove the upper and lower column shrouds.
(Refer to 19 - STEERING/COLUMN/LOWER
SHROUD - REMOVAL)
(8) Unsnap the trim bezel on the instrument panel
between the instrument cluster and the steering col-
umn.
(9) Remove the 2 screws securing the steering col-
umn fixed shroud to the steering column (Fig. 18),
then remove the shroud.
(10) Remove the two screws holding the metal
cover in place below the shifter/ignition interlock
linkage (Fig. 19), then remove the cover.
Fig. 17 Lower Steering Column Cover And
Reinforcement
1 - INSTRUMENT PANEL
2 - REINFORCEMENT PLATE
3 - LOWER STEERING COLUMN COVER/KNEE BLOCKER
Fig. 18 Fixed Shroud Mounting
1 - SCREWS
2 - SHROUD
Fig. 19 Cover Removal/Installation
1 - IGNITION SWITCH
2 - SCREW
3 - COVER
RSCOLUMN19-17

(11) Disconnect the shifter/ignition interlock link
from the lever on the lock cylinder housing (Fig. 20).
(12) 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. 21).
²Pull the key and key cylinder straight out of the
lock cylinder housing.
(13) Remove the vehicle wiring harness connector
from the key cylinder halo lamp (Fig. 22).
(14) Remove the key cylinder halo lamp from the
lock cylinder housing.(15) Remove the ignition switch mounting screw
(Fig. 23).
(16) Depress the two retaining tabs (Fig. 24), then
remove the ignition switch from the lock cylinder
housing.
(17) Disconnect both tilt mechanism springs from
their mounting posts on the tilt housing (Fig. 25),
then move them to the side out of the way (Fig. 26).
(18) While supporting the lock cylinder housing,
remove both mounting screws securing the lock cyl-
inder housing to the column (Fig. 26).
(19) Remove the lock cylinder housing from the
bottom of the steering column.
Fig. 20 Shifter/Ignition Interlock Linkage
Disconnected
1 - LEVER
2 - LINK
3 - LOCK CYLINDER HOUSING
Fig. 21 Cylinder Retaining Tab
1 - IGNITION SWITCH
2 - RETAINING TAB
Fig. 22 Wiring Harness Connection To Halo Lamp
1 - IGNITION SWITCH
2 - STEERING COLUMN ASSEMBLY
3 - WIRING HARNESS CONNECTOR
4 - IGNITION SWITCH HALO LIGHT
Fig. 23 Ignition Switch Mounting Screw
1 - MOUNTING SCREW
2 - IGNITION SWITCH
19 - 18 COLUMNRS
LOCK CYLINDER HOUSING (Continued)

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. 26). 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. 25).
(4) Ensure that the ignition switch and the actua-
tor shaft in the lock cylinder housing are in the ON
position.
(5) Carefully install the ignition switch over the
actuator shaft (Fig. 27). The switch will snap over
the retaining tabs on the housing.(6) Install the ignition switch mounting screw (Fig.
23).
(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. 22).
(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
Fig. 24 Ignition Switch Retaining Tabs
1 - IGNITION SWITCH
2 - LOCK CYLINDER HOUSING
3 - RETAINING TABS
Fig. 25 Tilt Mechanism Spring Removal/Installation
1 - SPRINGS
2 - POST
3 - GROOVE
Fig. 26 Lock Cylinder Housing Mounting Screw
Location
1 - SPRINGS
2 - MOUNTING SCREWS
Fig. 27 Ignition Switch Installation
1 - IGNITION SWITCH
2 - ACTUATOR SHAFT
3 - RETAINING TABS
RSCOLUMN19-19
LOCK CYLINDER HOUSING (Continued)

(3) Unsnap the upper shroud from the lower on
the right side as follows:
(a) Hook a finger on the right hand around the
rear of the shrouds at the seam (Fig. 34), near the
snap points.
(b) Grasp the upper shroud at the rear using the
left hand (Fig. 34).
(c) As the right hand's hooked finger is pulled
outward against the seam, pull the upper shroud
upward using the left hand, disconnecting the
shroud snaps.
(4) Lift the upper shroud straight up off the steer-
ing column. If vehicle is equipped with traction con-
trol, disconnect wiring connector at traction control
switch pig tail. Remove upper shroud.(5) Remove the lower shroud-to-column mounting
screw (Fig. 32).
(6) Remove the lower shroud from the steering col-
umn.
(7) If the vehicle is equipped with adjustable ped-
als:
(a) Disconnect wiring connector at adjustable
pedals switch.
(b) Depress retaining tabs on top and bottom of
switch and remove switch from lower shroud.
INSTALLATION
(1) If the vehicle is equipped with adjustable ped-
als:
(a) Install the switch into the lower shroud,
snapping it into place.
(b) Connect wiring harness to connector at
adjustable pedals switch.
(2) Position the lower shroud under the steering
column and install the lower shroud-to-column
mounting screw (Fig. 32). Tighten the screw to 2 N´m
(17 in. lbs.) torque.
(3) Place the upper shroud over the lower, aligning
the snap clips and alignment tabs. If the vehicle is
equipped with traction control, connect the wiring
connector at the traction control switch pig tail
before lining the shrouds up to one another.
(4) Snap the upper shroud to the lower shroud.
Once snapped into place, verify there are no gaps
between the two mating surfaces of the shrouds.
(5) Install the two shroud-to-shroud mounting
screws (Fig. 32). Tighten the screws to 2 N´m (17 in.
lbs.) torque.
(6) Ensure that the shrouds are snug and fit is
acceptable.
Fig. 32 Shroud Mounting Screw Location
1 - LOWER SHROUD
2 - LOWER SHROUD-TO-COLUMN SCREW
3 - SHROUD-TO-SHROUD SCREWS
Fig. 33 Hands Positioned To Release Left Side
1 - UPPER SHROUD
2 - LOWER SHROUD
3 - TILT LEVER
Fig. 34 Hands Positioned To Release Right Side
1 - LOWER SHROUD
2 - UPPER SHROUD
3 - SHIFT LEVER
4 - ADJUSTABLE PEDALS SWITCH (IF EQUIPPED)
19 - 22 COLUMNRS
SHROUD - LOWER (Continued)

SHROUD - UPPER
REMOVAL
(1) Remove the two shroud-to-shroud mounting
screws from the lower shroud (Fig. 32).
(2) Unsnap the upper shroud from the lower on
the left side as follows:
(a) Hook a finger on the left hand around the
rear of the shrouds at the seam (Fig. 33), near the
snap points.
(b) Grasp the upper shroud at the rear using the
right hand (Fig. 33).
(c) As the left hand's hooked finger is pulled out-
ward against the seam, pull the upper shroud
upward using the right hand, disconnecting the
shroud snaps.
(3) Unsnap the upper shroud from the lower on
the right side as follows:
(a) Hook a finger on the right hand around the
rear of the shrouds at the seam (Fig. 34), near the
snap points.
(b) Grasp the upper shroud at the rear using the
left hand (Fig. 34).
(c) As the right hand's hooked finger is pulled
outward against the seam, pull the upper shroud
upward using the left hand, disconnecting the
shroud snaps.
(4) Lift the upper shroud straight up off the steer-
ing column. If vehicle is equipped with traction con-
trol, disconnect wiring connector at traction control
switch pig tail. If vehicle is equipped with power fold-
away mirrors (Export), disconnect wiring connector
at mirror switch pig tail. Remove upper shroud.
(5) If vehicle is equipped with traction control,
remove traction control switch from shroud.
(6) If vehicle is equipped with power foldaway mir-
rors (Export), remove power fold-away switch from
upper shroud.
INSTALLATION
(1) If the vehicle is equipped with power foldaway
mirrors (Export), install the power fold-away switch
in the upper shroud.
(2) If vehicle is equipped with traction control,
install the traction control switch in the upper
shroud.
(3) Place the upper shroud over the lower shroud,
aligning the snap clips and alignment tabs. If the
vehicle is equipped with traction control, connect the
wiring connector at the traction control switch pig
tail before lining the shrouds up to one another.
(4) Snap the upper shroud to the lower shroud.
Once snapped into place, verify there are no gaps
between the two mating surfaces of the shrouds.(5) Install the two shroud-to-shroud mounting
screws (Fig. 32). Tighten the screws to 2 N´m (17 in.
lbs.) torque.
(6) Ensure that the shrouds are snug and fit is
acceptable.
STEERING WHEEL
REMOVAL
NOTE: Before proceeding, (Refer to 19 - STEERING/
COLUMN - WARNING)(Refer to 8 - ELECTRICAL/RE-
STRAINTS - WARNING).
(1) Adjust the steering wheel so that the tires are
in thestraight-aheadposition.
(2) Disconnect and isolate the battery negative
cable.
(3) Remove the two bolts from the rear of the
steering wheel attaching the driver airbag. Lift the
airbag from the steering wheel.
(4) Disconnect airbag squib wiring connectors from
the airbag and the horn/speed control switch pigtail
connector from the clockspring (Fig. 35). If the steer-
ing wheel is equipped with remote radio controls, dis-
connect the connector from the clockspring (Fig. 36).
Properly store the driver airbag out of the way.
(Refer to 8 - ELECTRICAL/RESTRAINTS - WARN-
ING)
(5) Remove the steering wheel retaining nut from
the steering column shaft (Fig. 36).
(6) Remove the steering wheel damper from the
steering wheel (Fig. 36).
Fig. 35 Airbag Wiring Connections
1 - AIRBAG FEED SQUIB CONNECTORS
2 - DRIVER AIRBAG
3 - HORN/SPEED CONTROL CONNECTOR
4 - CLOCKSPRING
RSCOLUMN19-23