key CHRYSLER CARAVAN 2002 Service Manual

(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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(5) Disengage cable end from clip on release han-
dle mechanism.
(6) Disengage cable end from release handle mech-
anism.
(7) Remove push pin fastener attaching cable end
to release handle.
(8) Disengage cable casing end from release handle
(Fig. 20).
(9) Disengage cable end from latch handle.
(10) Remove handle from vehicle.INSTALLATION
(1) Place inside latch handle in position on vehicle.
(2) Engage cable end into latch handle.
(3) Engage cable casing end into release handle.
(4) Install push pin fastener to hold cable into
release handle.
(5) Engage cable end into release handle mecha-
nism.
(6) Engage clip to hold cable end into release han-
dle mechanism.
(7) Place latch handle in position on sliding door.
(8) Install screw to hold top of inside release han-
dle to sliding door.
(9) Install screws to hold bottom of inside latch
handle to sliding door.
(10) Verify sliding door operation. Adjust as neces-
sary. (Refer to 23 - BODY/DOORS - SLIDING/SLID-
ING DOOR - ADJUSTMENTS)
(11) Install sliding door trim panel.(Refer to 23 -
BODY/DOORS - SLIDING/TRIM PANEL - INSTAL-
LATION)
BELLCRANK
REMOVAL
(1) Remove stop bumper (Refer to 23 - BODY/
DOORS - SLIDING/STOP BUMPER - REMOVAL).
(2) Remove sliding door trim panel. (Refer to 23 -
BODY/DOORS - SLIDING/TRIM PANEL -
REMOVAL)
(3) Peel watershield away from adhesive around
perimeter of inner door panel as necessary to gain
access to latch bellcrank.
(4) Disengage key cylinder link (Fig. 21).
(5) Disengage lock link.
(6) Disengage link and sleeve
(7) Remove bellcrank by rotating bellcrank to
release it from door.
(8) Remove bellcrank from vehicle.
INSTALLATION
(1) Position bellcrank on vehicle.
(2) Rotate bellcrank into position.
(3) Place lock link into position and engage clip
(Fig. 21).
(4) Place link and sleeve into position and engage
clip.
(5) Place key cylinder link into position and
engage clip.
(6) Place the watershield into position and press
securely to adhesive making sure to properly route
wiring and linkages.
(7) Install sliding door trim panel (Refer to 23 -
BODY/DOORS - SLIDING/TRIM PANEL - INSTAL-
LATION).
Fig. 19 SLIDING DOOR INSIDE HANDLE
1 - INSIDE ASSIST HANDLE
2 - SLIDING DOOR
3 - LATCH BELLCRANK
4 - INSIDE RELEASE HANDLE CABLE
Fig. 20 RELEASE HANDLE CABLE
1 - ASSIST HANDLE MECHANISM
2 - SLIDING DOOR INSIDE ASSIST HANDLE
3 - RELEASE HANDLE CABLE
23 - 34 DOORS - SLIDINGRS
INSIDE LATCH HANDLE (Continued)
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(8) Install stop bumper (Refer to 23 - BODY/
DOORS - SLIDING/STOP BUMPER - INSTALLA-
TION).
OUTSIDE HANDLE
REMOVAL
(1) Remove sliding door trim panel. (Refer to 23 -
BODY/DOORS - SLIDING/TRIM PANEL -
REMOVAL)
(2) Remove sliding door stop bumper. (Refer to 23 -
BODY/DOORS - SLIDING/STOP BUMPER -
REMOVAL)
(3) Peel watershield away from adhesive around
perimeter of inner door panel as necessary to access
outside release handle fasteners.
(4) Disengage clip attaching outside door handle
linkage to door cable.
(5) Remove linkage from outside door handle.
(6) Remove three nuts attaching outside door han-
dle to outer door panel (Fig. 22).
(7) Remove outside door handle from vehicle.
INSTALLATION
(1) Position outside door handle on vehicle.
(2) Install nuts attaching outside door handle to
outer door panel.
(3) Engage clip attaching linkage to outside door
handle.
(4) Engage rigging cam to latch/lock control mech-
anism.
(5) Move clip on latch/lock control to bottom of slot
and engage linkage to latch/lock control.
(6) Verify sliding door operation. Adjust as neces-
sary.
(7) Place the watershield into position and press
securely to adhesive making sure to properly route
wiring and linkages.
(8) Install sliding door stop bumper. (Refer to 23 -
BODY/DOORS - SLIDING/STOP BUMPER -
INSTALLATION)
(9) Install sliding door trim panel. (Refer to 23 -
BODY/DOORS - SLIDING/TRIM PANEL - INSTAL-
LATION)
Fig. 21 BELLCRANK
1 - LOCK LINK
2 - LATCH LINK
3 - LINK AND SLEEVE - OUTSIDE HANDLE
4 - BELLCRANK
5 - KEY CYLINDER LINK
Fig. 22 SLIDING DOOR OUTSIDE LATCH RELEASE
HANDLE
1 - OUTSIDE DOOR PANEL
2 - LOCK LINK
3 - LATCH LINK
4 - LOCKING LINK AND SLEEVE LINK
5 - BELLCRANK
6 - KEY CYLINDER LOCK LINK
7 - KEY CYLINDER
RSDOORS - SLIDING23-35
BELLCRANK (Continued)
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INSTALLATION
(1) Place hood in position on vehicle. With assis-
tance from a helper at the opposite side of the vehicle
to support the hood, install bottom bolts attaching
hood to hinge finger tight.
(2) Install top bolts attaching hood to hinge finger
tight.
(3) Position bolts at marks and tighten. Tighten
bolts to 13.5 N´m (120 in. lbs.) torque. The hood
should be aligned to 4 mm (0.160 in.) gap to the front
fenders and flush across the top surfaces along fend-
ers.
(4) Verify hood operation and alignment.
LATCH
REMOVAL
(1) Release hood latch and open hood.
(2) Remove bolts attaching hood latch to radiator
closure panel crossmember (Fig. 3).
(3) Remove hood latch from crossmember.
(4) Disconnect hood release cable from hood latch
(Fig. 4).
(5) Remove hood latch from vehicle.
INSTALLATION
(1) Position hood latch on vehicle.
(2) Connect hood release cable from hood latch.
(3) Position hood latch on crossmember.
(4) Align hood latch by placing latch over net
pierced tabs. If alignment is required, flatten or
grind tabs.(5) Verify hood operation and alignment. Adjust as
necessary.
(6) Tighten attaching bolts to 13.5 N´m (10 ft. lbs.)
torque.
LATCH RELEASE CABLE
REMOVAL
(1) Remove hood latch.
(2) Disengage cable end from hood latch locking
mechanism.
(3) Slide cable case end sideways in keyhole slot of
hood latch while pinching barb on cable case closed.
(4) Remove cable from latch (Fig. 4).
(5) Remove hood release handle from instrument
panel.
Fig. 2 HOOD
1 - HOOD
2 - HOOD LATCH STRIKER
3 - HOOD HALF OF HOOD HINGE
Fig. 3 HOOD LATCH
1 - HOOD RELEASE CABLE
2 - HOOD LATCH
3 - RADIATOR CLOSURE PANEL CROSSMEMBER
Fig. 4 HOOD
1 - RELEASE CABLE CASE
2 - HOOD LATCH
3 - RELEASE CABLE END
RSHOOD23-61
HOOD (Continued)
ProCarManuals.com

(6) Disengage rubber grommet cable insulator
from hole in dash panel.
(7) Attach a suitable length of mechanic's wire to
latch end of cable to assist cable installation.
(8) Route cable back from latch through engine
compartment toward dash panel near power brake
booster (Fig. 5).
(9) Remove attaching clips from cable case.
(10) From inside vehicle, pull cable through dash
panel until mechanic's wire is exposed.
(11) Disconnect cable from mechanic's wire.
(12) Remove hood release cable from vehicle.
INSTALLATION
(1) Place hood release cable in position under
instrument panel.
(2) Attach latch end of hood release cable to
mechanic's wire protruding through dash panel.(3) Route cable forward through engine compart-
ment toward latch by pulling on mechanic's wire
(Fig. 5) .
(4) Disconnect mechanic's wire from cable.
(5) Engage rubber grommet cable insulator into
hole in dash panel.
(6) Install hood release handle into instrument
panel.
(7) Place cable in position on latch.
(8) Slide cable case end sideways into keyhole slot
of hood latch.
(9) Engage cable end into hood latch locking mech-
anism.
(10) Install hood latch.
(11) Install attaching clips to cable case and install
clips into original holes in strut tower, fender, head-
lamp area, and radiator closure panel crossmember.
LATCH STRIKER
REMOVAL
(1) Release hood latch and open hood.
(2) Remove bolts attaching striker to inside of
hood.
(3) Remove hood latch striker from vehicle.
INSTALLATION
(1) Position hood latch striker on vehicle.
(2) Install bolts attaching hood latch striker to
hood.
(3) Align hood latch striker to engage smoothly
into hood latch.
(4) Verify hood operation and alignment. Adjust as
necessary.
(5) Tighten attaching bolts to 13.5 N´m (10 ft. lbs.)
torque.Fig. 5 HOOD RELEASE CABLE ROUTING
1 - GROMMET
2 - HOOD RELEASE CABLE
3 - RADIATOR CLOSURE PANEL CROSSMEMBER
23 - 62 HOODRS
LATCH RELEASE CABLE (Continued)
ProCarManuals.com

REAR CONTROL PANEL
With the rear control active, temperature selection
dictates indirectly the mode (floor or overhead air) of
the rear unit: a low temperature setting directs flow
to the overhead outlets and a high temperature set-
ting to the floor.
OPERATION - THREE ZONE ATC
Comfort temperature or perceived temperature is
affected by air flow, sun impinging on exposed skin,
etc. The air temperature may be higher or lower than
the comfort temperature. Three infrared sensors, two
in the instrument panel center stack, and one in the
overhead-mounted rear control panel, independently
measure the temperature of the driver, front passen-
ger, and rear compartment occupants to determine
their comfort level relative to the selected comfort
temperature. The HVAC computer in the control
module adjusts the air flow rate and temperature to
maintain the customer-perceived comfort tempera-
ture. The air temperature in the passenger compart-
ment at any time may be slightly higher or lower
than the comfort temperature. For instance, on
sunny summer days the air flow will probably be
cooler than the comfort temperature; on cold or
cloudy days and at night it will probably be slightly
warmer. Infrared Three-Zone Temperature Control
provides side-to-side and front-to-rear variation in
comfort temperature settings. The Infrared Three-
Zone Automatic Temperature Control fan provides a
continuously variable air flow rate to meet occupant
comfort requirements.
FRONT CONTROL PANEL
²AUTO HI/LO± This system features two sets of
automatic control logic that allow either a rapid cool-
down rate or a somewhat slower cool-down rate with
less fan noise. HI-AUTO controls the system to reach
its assigned temperature quickly with a higher fan
speed. LO-AUTO controls the system to reach its
assigned temperature somewhat slower with less fan
noise. Both modes will automatically engage auto
recirculation.
²DE-FROST± The front de-frost function is
active when the rear window defogger function is
active or when the defog/defrost mode is selected.
²RECIRC± The RECIRC button will close the
air inlet door. If the system is in auto recirc (indica-
tor being displayed automatically), pressing the man-
ual recirc button will disable the auto recirc function
until one of the auto keys are pressed or the ignition
is cycled. If Auto HI/LO is pressed while manual
recirc is active, manual recirc will be deactivated.
²REAR WINDOW DEFOGGER± Pushing the
button sends a PCI bus message to the Intelligent
Power Module which controls the Rear WindowDefogger and side view mirror (if equipped) circuitry.
The defogger function will be active for 10 minutes
and can be turned off by a switch press. The defogger
will function while the control is in the OFF mode.
²FAN/MODE± The Fan and Mode knobs have
17 manual selectable positions. Manually changing
either of the rotary knobs for mode or fan speed set-
tings makes control of that function alone manual for
as long as the ignition is on. If only one is changed
manually, the other remains under automatic control.
Pressing the HI-AUTO/LO-AUTO rocker switch
restores full automatic control.
²REAR CONTROL± When the Rear System
control knob is moved to the OFF position, there will
be a delay of approximately 1 second before the sys-
tem actually turns off. This delay is to prevent an
undesired blower dropout if the knob is moved
through OFF to the other selections.
²BLOWER DELAY TIMER± The word DELAY
is displayed at start-up to signify that the system is
waiting so that cold air will not be blowing. This tells
the operator that it is unnecessary to turn the sys-
tem off, raise the temperature setting or turn the fan
speed setting down to prevent cold air from blowing.
A countdown in minutes and seconds until the engine
is warm enough to begin delivering heat to the pas-
sengers alternates with the DELAY message at 25
second intervals. This countdown is based on actual
measurement of the rate of engine coolant tempera-
ture change. During the delay time, Defrost mode is
selected and the fan operates at a low speed to keep
the windshield fog free.
REAR CONTROL PANEL
Primary control of the rear compartment unit is in
the instrument panel center stack. The rear unit con-
trol knob there allows the driver to turn the rear
unit off, allow control by the intermediate seat occu-
pants by switching to the REAR position, or provide
fully automatic control based on the temperature set-
ting shown on the front control display.
²REAR CONTROL± Selecting automatic control
of the rear unit at the instrument panel, illuminates
a Locked Padlock in the rear control panel display.
Selecting REAR activates the rear control panel and
the Padlock then appears unlocked.
²FAN KNOB± The rear fan control has Off and
AUTO positions and a range of manual speed set-
tings that override the AUTO setting.
²MODE KNOB± The mode control allows inter-
mediate seat occupants to manually override the
automatic mode and select any balance of air flow
between overhead and floor outlets from full over-
head to full floor.
²SET TEMP± The rear set temp control will
operate identical to the front controls. If the front
24 - 4 HEATING & AIR CONDITIONINGRS
HEATING & AIR CONDITIONING (Continued)
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REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
WARNING: THE BLOWER MOTOR RESISTOR MAY
GET VERY HOT DURING NORMAL OPERATION. IF
THE BLOWER MOTOR WAS TURNED ON, WAIT
FIVE MINUTES TO ALLOW THE BLOWER MOTOR
RESISTOR TO COOL BEFORE PERFORMING DIAG-
NOSIS OR SERVICE. FAILURE TO TAKE THIS PRE-
CAUTION CAN RESULT IN PERSONAL INJURY.
CAUTION: Do not operate the blower motor with the
blower motor resistor removed from the circuit.
Failure to take this precaution can result in vehicle
damage.
(1) Disconnect and isolate the battery negative
cable.
(2) Open the glove box.
(3) Flex both sides of the glove box bin inward
near the top far enough for the rubber glove box stop
bumpers to clear the sides of the glove box opening,
then roll the glove box downward.
(4) Reach through the glove box opening to access
and disconnect the instrument panel wire harness
connector for the blower motor resistor from the
resistor connector receptacle (Fig. 10).
(5) Reach through the glove box opening to access
and disconnect the blower motor pigtail wire connec-
tor from the resistor connector receptacle.
(6) Remove the two screws that secure the blower
motor resistor to the evaporator housing.
(7) Remove the blower motor resistor from the
evaporator housing.
INSTALLATION
CAUTION: Do not operate the blower motor with the
blower motor resistor removed from the circuit.
Failure to take this precaution can result in vehicle
damage.(1) Position the blower motor resistor into the
evaporator housing.
(2) Install and tighten the two screws that secure
the blower motor resistor to the evaporator housing.
Tighten the screws to 2 N´m (17 in. lbs.).
(3) Reconnect the blower motor pigtail wire con-
nector to the blower motor resistor connector recep-
tacle.
(4) Reconnect the instrument panel wire harness
connector for the blower motor resistor to the resistor
connector receptacle.
(5) Flex both sides of the glove box bin inward
near the top far enough for the rubber glove box stop
bumpers to clear the sides of the glove box opening,
then roll the glove box upward.
(6) Close and latch the glove box.
(7) Reconnect the battery negative cable.
COMPRESSOR CLUTCH
DESCRIPTION
The compressor clutch assembly consists of a sta-
tionary electromagnetic coil with a zener diode, a hub
bearing and pulley assembly, and a clutch plate (Fig.
11). The electromagnetic coil unit and the hub bear-
ing and pulley assembly are each retained on the
nose of the compressor front housing with snap rings.
The clutch plate is keyed or splined to the compres-
sor shaft, and secured with a bolt.
Fig. 10 Blower Motor Resistor
1 - BLOWER MOTOR RESISTOR
2 - INSTRUMENT PANEL WIRE HARNESS
3 - SCREW (2)
4 - GLOVE BOX OPENING LOWER REINFORCEMENT
5 - BLOWER MOTOR PIGTAIL WIRE
6 - EVAPORATOR HOUSING
24 - 16 CONTROLS - FRONTRS
BLOWER MOTOR RESISTOR (Continued)
ProCarManuals.com

The compressor clutch plate and pulley unit, or the
clutch coil are available for separate service replace-
ment. The clutch coil zener diode is integral to the
clutch coil pigtail wire and connector and, if faulty or
damaged, the clutch electromagnetic coil unit must
be replaced.
OPERATION
The compressor clutch components provide the
means to engage and disengage the compressor from
the engine serpentine accessory drive belt. When the
clutch coil is energized, it magnetically draws the
clutch plate into contact with the clutch pulley and
drives the compressor shaft. When the coil is not
energized, the pulley freewheels on the clutch hub
bearing, which is part of the pulley.
A zener diode is connected in parallel with the
clutch electromagnetic coil. This diode controls the
dissipation of voltage induced into the coil windings
by the collapsing of the electromagnetic fields that
occurs when the compressor clutch is disengaged.
The zener diode dissipates this induced voltage by
regulating a current path to ground. This arrange-
ment serves to protect other circuits and components
from potentially damaging voltage spikes in the vehi-
cle electrical system that might occur if the voltage
induced in the clutch coil windings could not be dis-
sipated.
The compressor clutch engagement is controlled by
several components: the heater-A/C controls in the
passenger compartment, the A/C pressure transducer
on the liquid line, the evaporator temperature sensor
on the expansion valve, the Powertrain Control Mod-ule (PCM) in the engine compartment, and the com-
pressor clutch relay in the Intelligent Power Module
(IPM). The PCM may delay compressor clutch
engagement for up to thirty seconds. (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES/POWERTRAIN CONTROL MODULE -
DESCRIPTION - PCM OPERATION).
STANDARD PROCEDURE
STANDARD PROCEDURE - COMPRESSOR
CLUTCH AIR GAP
If a new clutch plate and/or clutch pulley are being
used, the air gap between the clutch plate and clutch
pulley must be checked using the following proce-
dure:
(1) Using feeler gauges, measure the air gap
between the clutch plate and the clutch pulley fric-
tion surfaces.
(2) If the air gap is not between 0.5 and 0.9 mm
(0.020 and 0.035 in.), add or subtract shims until the
desired air gap is obtained.
NOTE: The shims may compress after tightening
the compressor shaft bolt. Check the air gap in four
or more places on the clutch plate to verify that the
air gap is still correct. Spin the clutch pulley before
making the final air gap check.
STANDARD PROCEDURE - COMPRESSOR
CLUTCH BREAK-IN
After a new compressor clutch has been installed,
check that the compressor clutch coil is performing to
specifications. (Refer to 24 - HEATING & AIR CON-
DITIONING/CONTROLS - FRONT/COMPRESSOR
CLUTCH COIL - DIAGNOSIS AND TESTING). If
the clutch coil is performing to specifications, per-
form the compressor clutch break-in procedure. This
procedure (burnishing) will seat the opposing friction
surfaces and provide a higher compressor clutch
torque capability.
(1) Set the heater-A/C controls to the A/C mode,
with the blower switch in the highest speed position.
(2) Start the engine and hold the engine speed at
1500 to 2000 rpm.
(3) Cycle the compressor clutch On and Off about
twenty times (five seconds On, then five seconds Off).
REMOVAL
The refrigerant system can remain fully charged
during compressor clutch, pulley, or coil replacement.
Although the compressor assembly must be removed
from its mounting, the compressor clutch can be ser-
vice with the compressor in the vehicle.
Fig. 11 Compressor Clutch - Typical
1 - CLUTCH PLATE
2 - SHAFT KEY (SOME MODELS)
3 - PULLEY AND BEARING
4 - CLUTCH COIL
5 - CLUTCH SHIMS
6 - SNAP RING
7 - SNAP RING
RSCONTROLS - FRONT24-17
COMPRESSOR CLUTCH (Continued)
ProCarManuals.com

(7) With the DRBIIItin Cabin Heater, select Sys-
tem Tests and Dosing Pump Prime. Allow the Dosing
Pump to run for the full 45 second cycle time. When
the 45 second cycle is complete, press Page Back on
the DRBIIItkey pad to exit the Dosing Pump Prime.
The Dosing Pump priming procedure is now com-
plete.
HEATER UNIT
REMOVAL
WARNING: ALLOW THE DCHA TO COOL BEFORE
PERFORMING A COMPONENT INSPECTION/REPAIR
OR REPLACEMENT. FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY RESULT IN PERSONAL
INJURY.
WARNING: ALLOW THE EXHAUST SYSTEM TO
COOL BEFORE PERFORMING A COMPONENT
INSPECTION/REPAIR OR REPLACEMENT. FAILURE
TO FOLLOW THESE INSTRUCTION MAY RESULT IN
PERSONAL INJURY.
(1) Elevate the vehicle on a hoist/lift taking note of
heater exhaust tube flexible section.
(2) Drain cooling system(Refer to 7 - COOLING -
STANDARD PROCEDURE).
(3) Carefully open one hose to the underbody tube
assembly and drain the remaining coolant. A salvage
hose is a good idea to control the residual coolant, as
flow will occur from both the heater and the hose and
tube assemblies.
(4) Remove the second hose from the underbody
hose and tube assembly.
(5) Loosen the hose and tube assembly from the
toe-board cross member at two locations.
(6) Disconnect the electrical connector from the
body harness near the toe board cross member and
rail.
(7) Remove the wiring harness from the toe board
cross member(Refer to 24 - HEATING & AIR CON-
DITIONING/CABIN HEATER/HEATER UNIT -
REMOVAL).
(8) Open the fuel fill cap. Disconnect the rubber
fuel hose between the body tube assembly and the
fuel pump nipple at the body tube joint. A minimal
amount of fuel may flow from the open port.
NOTE: Utilize an approved fuel storage container to
catch any residual fuel.
(9) Loosen the two M8 fasteners at the rail. Take
care to notice that the exhaust tube bracket tab is on
top of the heater bracket.(10) Remove the heater exhaust tube flex section
from the exhaust tube by loosening the M6 bolt of
the clamp assembly. Remove the hose from the
exhaust tube. Removal of the rail tube assembly may
aid in this service operation.(Refer to 24 - HEATING
& AIR CONDITIONING/CABIN HEATER/EXHAUST
TUBE - REMOVAL).
(11) Remove seat hex nut at the heater mounting
flange to cross member.
(12) Loosen the remaining M6 and M8 fasteners
which mount the exhaust tube assembly to the vehi-
cle.
(a) Install a suitable cabin heater support device
under the cabin heater and secure the cabin heater
to the device.
(13) Loosen the remaining three M6 fasteners to
the cross members.
(14) Remove the loosened fasteners that support
the heater while supporting the weight of the heater.
(15) Swing the unit mounting bracket from
between the exhaust bracket and rail mounting loca-
tion. Drain any residual coolant from the heater unit.
(16) Lower the cabin heater and remove from the
supporting device and place on a suitable work area.
INSTALLATION
(1) Install the unit mounting bracket between the
exhaust bracket and the rail mounting location.
(2) Install the fasteners that support the heater
while supporting the weight of the heater.
(3) Install the three M6 fasteners to the cross
members. Tighten the M6 fasteners to 7 Nm (5 ft.
lbs.).
(4) Tighten the remaining M6 fasteners to 7 Nm (5
ft. lbs.) and the M8 fasteners to 23 Nm (17 ft. lbs.)
which mount the exhaust tube assembly to the vehi-
cle.
(5) Install the seat hex nut at the heater mounting
flange to the cross members. Tighten to 60 Nm (44 ft.
lbs.)
(6) Install the heater exhaust tube flex section to
the exhaust tube by tightening the M6 bolt of the
clamp assembly. Install the hose to the exhaust tube.
(7) Tighten the two M8 fasteners at the rail to 23
Nm (17 ft. lbs.). Taking care so that the exhaust tube
bracket tab is on the top of the heater bracket.
(8) Install the wiring harness(Refer to 24 - HEAT-
ING & AIR CONDITIONING/CABIN HEATER/
HEATER UNIT - INSTALLATION).
(9) Tighten the hose and tube assembly to the toe-
board cross member at two locations.
(10) Install the second hose to the underbody hose
and tube assembly.
(11) Connect the rubber fuel hose between the
body tube assembly and the fuel pump nipple at the
body tube joint. Close the fuel fill cap.
24 - 114 DIESEL SUPPLEMENTAL HEATER - DCHA - BUXRS
FUEL LINE (Continued)
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