wiring CHRYSLER CARAVAN 2005 Service Manual

WARNING: TO AVOID PERSONAL INJURY OR
DEATH ON VEHICLES EQUIPPED WITH THE OCCU-
PANT CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT CLASSIFICATION MODULE (OCM) AND
THE SEAT CUSHION TRIM MAY BE SERVICED SEP-
ARATELY. ALL OTHER COMPONENTS OF THE PAS-
SENGER SIDE FRONT SEAT CUSHION ASSEMBLY
MUST BE SERVICED ONLY AS A COMPLETE FAC-
TORY-CALIBRATED, ASSEMBLED AND TAMPER-EV-
IDENT SERVICE REPLACEMENT PACKAGE. THIS
PACKAGE INCLUDES THE FRAME, SPRINGS, PAD,
BLADDER, SENSOR, FOAM, WIRING AND A CALI-
BRATED OCM. WHEN INSTALLING THIS PACKAGE
ALWAYS REPLACE ALL OF THE EXISTING COMPO-
NENTS WITH THE NEW COMPONENTS AS A UNIT.
DO NOT ATTEMPT TO SEPARATE OR DISCONNECT
ANY OF THE NEW OCS COMPONENTS IN THE SER-
VICE REPLACEMENT PACKAGE FROM EACH
OTHER, AND DO NOT ATTEMPT TO REUSE ANY OF
THE REPLACED COMPONENTS IN THIS OR ANY
OTHER VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE OF
THE PASSENGER AIRBAG TO DEPLOY WHEN
REQUIRED, OR IN PASSENGER AIRBAG DEPLOY-
MENT WHEN NOT REQUIRED.
(1) Remove seat from vehicle. (Refer to 23 - BODY/
SEATS/FRONT SEAT - REMOVAL)
(2) Remove seat cushion. (Refer to 23 - BODY/
SEATS/FRONT/QUAD SEAT CUSHION -
REMOVAL)
(3) Remove riser. (Refer to 23 - BODY/SEATS/
FRONT SEAT RISER - MANUAL TRACK -
REMOVAL)
(4) Remove bolt attaching seat back frame to seat
track (Fig. 39).
(5) Remove seat track from seat adjuster handle
(Fig. 40).
(6) Remove seat track from seat.
Fig. 39 FRONT SEAT TRACK - MANUAL
1 - SHOULDER BOLT
2 - RECLINER
3 - MANUAL SEAT TRACK
Fig. 40 FRONT SEAT TRACK ADJUSTER HANDLE
1 - RECLINER
2 - SEAT ADJUSTER HANDLE
3 - MANUAL SEAT TRACK
RSSEATS23 - 127
FRONT SEAT TRACK ADJUSTER/MANUAL - OCS (Continued)

INSTALLATION
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, OCCUPANT
CLASSIFICATION SYSTEM, SEAT BELT TEN-
SIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
WARNING: TO AVOID PERSONAL INJURY OR
DEATH ON VEHICLES EQUIPPED WITH THE OCCU-
PANT CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT CLASSIFICATION MODULE (OCM) AND
THE SEAT CUSHION TRIM MAY BE SERVICED SEP-
ARATELY. ALL OTHER COMPONENTS OF THE PAS-
SENGER SIDE FRONT SEAT CUSHION ASSEMBLY
MUST BE SERVICED ONLY AS A COMPLETE FAC-
TORY-CALIBRATED, ASSEMBLED AND TAMPER-EV-
IDENT SERVICE REPLACEMENT PACKAGE. THIS
PACKAGE INCLUDES THE FRAME, SPRINGS, PAD,
BLADDER, SENSOR, FOAM, WIRING AND A CALI-
BRATED OCM. WHEN INSTALLING THIS PACKAGE
ALWAYS REPLACE ALL OF THE EXISTING COMPO-
NENTS WITH THE NEW COMPONENTS AS A UNIT.
DO NOT ATTEMPT TO SEPARATE OR DISCONNECT
ANY OF THE NEW OCS COMPONENTS IN THE SER-
VICE REPLACEMENT PACKAGE FROM EACH
OTHER, AND DO NOT ATTEMPT TO REUSE ANY OF
THE REPLACED COMPONENTS IN THIS OR ANY
OTHER VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE OF
THE PASSENGER AIRBAG TO DEPLOY WHEN
REQUIRED, OR IN PASSENGER AIRBAG DEPLOY-
MENT WHEN NOT REQUIRED.
(1) Place seat track in position on seat.
(2) Place adjuster handle in position on seat track
(Fig. 40).
(3) Insert stud on seat back frame into recliner.
(4) Install bolt attaching seat back frame to seat
track (Fig. 39).
(5) Install riser. (Refer to 23 - BODY/SEATS/
FRONT SEAT RISER - MANUAL TRACK - INSTAL-
LATION)(6) Install seat cushion. (Refer to 23 - BODY/
SEATS/FRONT/QUAD SEAT CUSHION - INSTAL-
LATION)
(7) Install seat in vehicle. (Refer to 23 - BODY/
SEATS/FRONT SEAT - INSTALLATION)
FRONT SEAT TRACK - REAR
COVER
REMOVAL
(1) Disengage arrowhead retainer from loop strip
attaching rear cover to power seat track crossbar
(Fig. 41).
(2) Disengage fasteners attaching rear cover to
slots on power seat track.
(3) Remove rear cover from seat.
INSTALLATION
(1) Place rear cover in position on seat.
(2) Engage fasteners attaching rear cover to slots
on power seat track.
(3) Engage arrowhead retainer into loop strip
attaching rear cover to power seat track crossbar
(Fig. 41).
Fig. 41 FRONT POWER SEAT TRACK - REAR
COVER
1 - PUSH IN FASTENER
2 - POWER SEAT TRACK REAR COVER
3 - POWER SEAT TRACK
23 - 128 SEATSRS
FRONT SEAT TRACK ADJUSTER/MANUAL - OCS (Continued)

FRONT SEAT TRACK REAR
COVER - OCS
REMOVAL
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, OCCUPANT
CLASSIFICATION SYSTEM, SEAT BELT TEN-
SIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
WARNING: TO AVOID PERSONAL INJURY OR
DEATH ON VEHICLES EQUIPPED WITH THE OCCU-
PANT CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT CLASSIFICATION MODULE (OCM) AND
THE SEAT CUSHION TRIM MAY BE SERVICED SEP-
ARATELY. ALL OTHER COMPONENTS OF THE PAS-
SENGER SIDE FRONT SEAT CUSHION ASSEMBLY
MUST BE SERVICED ONLY AS A COMPLETE FAC-
TORY-CALIBRATED, ASSEMBLED AND TAMPER-EV-
IDENT SERVICE REPLACEMENT PACKAGE. THIS
PACKAGE INCLUDES THE FRAME, SPRINGS, PAD,
BLADDER, SENSOR, FOAM, WIRING AND A CALI-
BRATED OCM. WHEN INSTALLING THIS PACKAGE
ALWAYS REPLACE ALL OF THE EXISTING COMPO-
NENTS WITH THE NEW COMPONENTS AS A UNIT.
DO NOT ATTEMPT TO SEPARATE OR DISCONNECT
ANY OF THE NEW OCS COMPONENTS IN THE SER-
VICE REPLACEMENT PACKAGE FROM EACH
OTHER, AND DO NOT ATTEMPT TO REUSE ANY OF
THE REPLACED COMPONENTS IN THIS OR ANY
OTHER VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE OF
THE PASSENGER AIRBAG TO DEPLOY WHEN
REQUIRED, OR IN PASSENGER AIRBAG DEPLOY-
MENT WHEN NOT REQUIRED.(1) Disengage arrowhead retainer from loop strip
attaching rear cover to power seat track crossbar
(Fig. 42).
(2) Disengage fasteners attaching rear cover to
slots on power seat track.
(3) Remove rear cover from seat.
INSTALLATION
WARNING: TO AVOID PERSONAL INJURY OR
DEATH, ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE SUPPLEMENTAL RESTRAINT SYS-
TEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, AIRBAG, OCCUPANT
CLASSIFICATION SYSTEM, SEAT BELT TEN-
SIONER, IMPACT SENSOR, OR INSTRUMENT
PANEL COMPONENT DIAGNOSIS OR SERVICE.
DISCONNECT AND ISOLATE THE BATTERY NEGA-
TIVE (GROUND) CABLE, THEN WAIT TWO MINUTES
FOR THE SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE SUPPLEMENTAL RESTRAINT SYSTEM.
FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG DEPLOY-
MENT.
Fig. 42 FRONT POWER SEAT TRACK - REAR
COVER
1 - PUSH IN FASTENER
2 - POWER SEAT TRACK REAR COVER
3 - POWER SEAT TRACK
RSSEATS23 - 129

WARNING: TO AVOID PERSONAL INJURY OR
DEATH ON VEHICLES EQUIPPED WITH THE OCCU-
PANT CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT CLASSIFICATION MODULE (OCM) AND
THE SEAT CUSHION TRIM MAY BE SERVICED SEP-
ARATELY. ALL OTHER COMPONENTS OF THE PAS-
SENGER SIDE FRONT SEAT CUSHION ASSEMBLY
MUST BE SERVICED ONLY AS A COMPLETE FAC-
TORY-CALIBRATED, ASSEMBLED AND TAMPER-EV-
IDENT SERVICE REPLACEMENT PACKAGE. THIS
PACKAGE INCLUDES THE FRAME, SPRINGS, PAD,
BLADDER, SENSOR, FOAM, WIRING AND A CALI-
BRATED OCM. WHEN INSTALLING THIS PACKAGE
ALWAYS REPLACE ALL OF THE EXISTING COMPO-
NENTS WITH THE NEW COMPONENTS AS A UNIT.
DO NOT ATTEMPT TO SEPARATE OR DISCONNECT
ANY OF THE NEW OCS COMPONENTS IN THE SER-
VICE REPLACEMENT PACKAGE FROM EACH
OTHER, AND DO NOT ATTEMPT TO REUSE ANY OF
THE REPLACED COMPONENTS IN THIS OR ANY
OTHER VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE OF
THE PASSENGER AIRBAG TO DEPLOY WHEN
REQUIRED, OR IN PASSENGER AIRBAG DEPLOY-
MENT WHEN NOT REQUIRED.
(1) Place rear cover in position on seat.
(2) Engage fasteners attaching rear cover to slots
on power seat track.
(3) Engage arrowhead retainer into loop strip
attaching rear cover to power seat track crossbar
(Fig. 42).
ARMREST - SECOND ROW -
FOLD-IN-FLOOR
REMOVAL
(1) Remove armrest plug with a small flat bladed
tool (Fig. 43).
(2) Remove attaching screw.
(3) Remove armrest from seat back.
INSTALLATION
(1) Place armrest into position (Fig. 43).
(2) Install attaching screw.
(3) Install armrest plug.
ARMREST ROTATING
ASSEMBLY - SECOND ROW -
FOLD-IN-FLOOR
REMOVAL
(1) Remove headrest and headrest sleeves. (Refer
to 23 - BODY/SEATS/HEADREST SLEEVE -
REMOVAL).
(2) Remove both armrest. (Refer to 23 - BODY/
SEATS/ARMREST - REMOVAL).
(3) Remove seat back panel. (Refer to 23 - BODY/
SEATS/SEAT BACK - REMOVAL).
(4) Disengage J-strap from seat back (Fig. 44).
(5) Move seat back cover and foam to access the
armrest rotating assembly.
(6) Remove armrest rotating assembly attaching
screws (Fig. 45).
(7) Remove armrest rotating assembly from the
seat back frame.
INSTALLATION
(1) Place armrest rotating assembly into position
(Fig. 45).
(2) Install two armrest rotating assembly attach-
ing screws.
(3) Move seat back cover and foam to into proper
position and engage J-straps (Fig. 44).
(4) Install seat back panel. (Refer to 23 - BODY/
SEATS/SEAT BACK - INSTALLATION).
(5) Install both armrest. (Refer to 23 - BODY/
SEATS/ARMREST - INSTALLATION).
Fig. 43 SECOND ROW SEAT ARMREST
1 - ARMREST PLUG
23 - 130 SEATSRS
FRONT SEAT TRACK REAR COVER - OCS (Continued)

SUNROOF
TABLE OF CONTENTS
page page
SUNROOF
DESCRIPTION........................169
DIAGNOSIS AND TESTING
SUNROOF DIAGNOSIS AND TESTING....169
DRAIN TUBE
REMOVAL............................172
INSTALLATION........................172
GLASS PANEL
REMOVAL............................173
INSTALLATION........................173
ADJUSTMENTS
SUNROOF GLASS PANEL ADJUSTMENT . . 173
SUNROOF ASSEMBLY
REMOVAL............................173
INSTALLATION........................173
SUNSHADE
REMOVAL............................173INSTALLATION........................173
WIND DEFLECTOR
REMOVAL............................174
INSTALLATION........................174
WATER CHANNEL
REMOVAL............................174
INSTALLATION........................174
SUNROOF MOTOR
REMOVAL............................174
INSTALLATION........................174
ADJUSTMENTS
ADJUSTMENT.......................175
SUNROOF SWITCH
REMOVAL............................176
INSTALLATION........................176
SUNROOF
DESCRIPTION
WARNING: Keep fingers and other body parts out
of sunroof opening at all times.
The sun roof features consists of: (Fig. 1)
²Sun roof glass
²Sun roof sun shade
The sunroof power sliding glass panel and sun-
shade can be positioned anywhere along its travel,
rearward of glass panel front edge.
The sunroof is electrically operated from a switch
located in the overhead console. To operate the sun-
roof the ignition switch must be in the Accessory or
On/Run position. Both switchs are a rocker style
design that open or close the sunroof. When pressing
and releasing the open button once, the sunroof will
express open to the comfort stop and the wind deflec-
tor will raise. If the button is pressed a second time,
the sunroof will continue to open to full travel unless
the button is released, at which time it will stop in
that position. Pressing and holding the close button
will close the sunroof. If the close button is released
before the glass fully closes, the sunroof will stop in
that position. The vent switch operates in a similar
manor. The sunroof will also operate for up to fifteen
minutes after the ignition key is turned off for cus-
tomer comfort and convenance while parking.
DIAGNOSIS AND TESTING
SUNROOF DIAGNOSIS AND TESTING
Refer to Sunroof Diagnostic Chart for possible
causes. Before beginning sunroof diagnostics verify
that all other power accessories are in proper operat-
ing condition. If not, a common electrical problem
may exist. Refer to Wiring Diagrams, in this publica-
tion for circuit, splice and component descriptions.
Check the condition of the circuit protection (20 amp
circuit breaker in the Junction Block). Inspect all
wiring connector pins for proper engagement and
continuity. Check for battery voltage at the power
sunroof controller, refer to Wiring Diagrams, for cir-
cuit information. If battery voltage of more than 10
volts is detected at the controller, proceed with the
following tests (the controller will not operate at less
than 10 volts).
Before beginning diagnosis for wind noise or water
leaks, verify that the problem was not caused by
releasing the control switch before the sunroof was
fully closed. The sunroof module has a water-man-
agement system. If however, the sunroof glass is in a
partial closed position, high pressure water may be
forced beyond the water management system bound-
aries and onto the headlining.
RSSUNROOF23 - 169

TEMPERATURE CONTROL
If the heater outlet air temperature cannot be
adjusted with the temperature control knob on the
A/C-heater control panel, the following could require
service:
²Blend door binding.
²Faulty blend door actuator.
²Faulty A/C-heater control.
²Faulty related wiring harness or connectors.²Improper engine coolant temperature.
SPECIFICATIONS
A/C SYSTEM
The R-134a refrigerant system charge capacity for
this vehicle can be found on the underhood Specifica-
tion Label.
SYSTEM SPECIFICATIONS
Item Description Notes
A/C Compressor Denso 10S17 ± 2.4L/2.5L/2.8L/3.3L
without rear A/C
Denso 10S20 ± 3.3L/3.8L with rear
A/CND-8 PAG Oil
Freeze±up Control Evaporator temperature sensor HVAC housing mounted (RS models),
Evaporator mounted (RG models) - input to
A/C-heater control module
Low PSI Control A/C pressure transducer Liquid line mounted - input to Powertrain Control
Module (PCM) - PCM opens compressor clutch
relay above 200 kPa (29 psi)
High PSI Control A/C pressure transducer Liquid line mounted - input to PCM - PCM
opens compressor clutch relay below 3100 kPa
(450 psi)
High Pressure relief valve Compressor mounted - opens above 3445-4135
kPa (500-600 psi), closes below 2756 kPa (400
psi)
Compressor Clutch Coil
DrawDenso 10S17 ± 3.3 amps @ 12V  
0.5V @ 21É C (70É F)
Denso 10S20 ± 2.2 amps @ 12V  
0.5V @ 21É C (70É F)
Compressor Clutch Air
Gap0.35 - 0.60 mm (0.014 - 0.024 in.)
TORQUE SPECIFICATIONS
Description N´m Ft. Lbs. In. Lbs.
A/C Compressor Shaft Bolt 17.5 ± 155
A/C Compressor Mounting Bolts (2.4L/2.5L/2.8L) 28 21 ±
A/C Compressor Mounting Bolts (3.3L/3.8L) 54 40 ±
A/C Compressor Mounting Bracket Bolts (2.4L) 54 40 ±
A/C Condenser Mounting Bracket Screws 5 ± 45
A/C Expansion Valve Screws 11 ± 97
A/C-Heater Control Screws 2 ± 17
Blend Door Actuator Screws 2 ± 17
Blower Motor Screws 2 ± 17
Blower Motor Power Module Screws (ATC) 2 ± 17
Blower Motor Resistor Block Screws (MTC) 2 ± 17
Center Bezel Outlet Screws 2 ± 17
RSHEATING & AIR CONDITIONING24-11
HEATING & AIR CONDITIONING (Continued)

A/C COMPRESSOR CLUTCH
RELAY
DESCRIPTION
The compressor clutch relay (Fig. 7) is a Interna-
tional Standards Organization (ISO) mini-relay.
Relays conforming to the ISO specifications have
common physical dimensions, current capacities, ter-
minal patterns, and terminal functions. The ISO
mini-relay terminal functions are the same as a con-
ventional ISO relay. However, the ISO mini-relay ter-
minal pattern (or footprint) is different, the current
capacity is lower, and the physical dimensions are
smaller than those of the conventional ISO relay. The
A/C compressor clutch relay is located in the inte-
grated power module (IPM) in the engine compart-
ment. See the fuse and relay map molded into the
inner surface of the cover of the IPM for A/C com-
pressor clutch relay identification and location.
The black, molded plastic case is the most visible
component of the A/C compressor clutch relay. Five
male spade-type terminals extend from the bottom of
the base to connect the relay to the vehicle electrical
system, and the ISO designation for each terminal is
molded into the base adjacent to each terminal. The
ISO terminal designations are as follows:
²30 (Common Feed)- This terminal is con-
nected to the movable contact point of the relay.
²85 (Coil Ground)- This terminal is connected
to the ground feed side of the relay control coil.
²86 (Coil Battery)- This terminal is connected
to the battery feed side of the relay control coil.
²87 (Normally Open)- This terminal is con-
nected to the normally open fixed contact point of the
relay.²87A (Normally Closed)- This terminal is con-
nected to the normally closed fixed contact point of
the relay.
OPERATION
The A/C compressor clutch relay is an electrome-
chanical switch that uses a low current input from
the powertrain control module (PCM) to control the
high current output to the compressor clutch electro-
magnetic coil. The movable common feed contact
point is held against the fixed normally closed con-
tact point by spring pressure. When the relay coil is
energized, an electromagnetic field is produced by the
coil windings. This electromagnetic field draws the
movable relay contact point away from the fixed nor-
mally closed contact point, and holds it against the
fixed normally open contact point. When the relay
coil is de-energized, spring pressure returns the mov-
able contact point back against the fixed normally
closed contact point. The resistor or diode is con-
nected in parallel with the relay coil in the relay, and
helps to dissipate voltage spikes and electromagnetic
interference that can be generated as the electromag-
netic field of the relay coil collapses.
The compressor clutch relay terminals are con-
nected to the vehicle electrical system through a
receptacle in the integrated power module (IPM). The
inputs and outputs of the A/C compressor clutch
relay include:
²The common feed terminal (30) receives a bat-
tery current input from a fuse in the IPM through a
fused B(+) circuit at all times.
²The coil ground terminal (85) receives a ground
input from the PCM through the compressor clutch
relay control circuit only when the PCM electroni-
cally pulls the control circuit to ground.
²The coil battery terminal (86) receives a battery
current input from the PCM through a fused ignition
switch output (run-start) circuit only when the igni-
tion switch is in the On or Start positions.
²The normally open terminal (87) provides a bat-
tery current output to the compressor clutch coil
through the compressor clutch relay output circuit
only when the compressor clutch relay coil is ener-
gized.
²The normally closed terminal (87A) is not con-
nected to any circuit in this application, but provides
a battery current output only when the compressor
clutch relay coil is de-energized.
The A/C compressor clutch relay cannot be
repaired and, if faulty or damaged, it must be
replaced. Refer to the appropriate wiring information
for diagnosis and testing of the micro-relay and for
complete HVAC wiring diagrams.
Fig. 7 A/C Compressor Clutch Relay
24 - 18 CONTROLS - FRONTRS

The blower motor relay terminals are connected to
the vehicle electrical system through a receptacle in
the Integrated Power Module (IPM). The inputs and
outputs of the blower motor relay include:
²The common feed terminal (30) receives a bat-
tery current input from the battery through a B(+)
circuit at all times.
²The coil ground terminal (85) receives a ground
input through the front/rear blower motor relay con-
trol circuit only when the FCM electronically pulls
the control circuit to ground.
²The coil battery terminal (86) receives a battery
current input from the battery through a B(+) circuit
at all times.
²The normally open terminal (87) provides a bat-
tery current output to the blower motor resistor
(manual heater-A/C control) or blower power module
(automatic heater-A/C control) through a fuse in the
IPM on the fused front blower motor relay output cir-
cuit only when the blower motor relay coil is ener-
gized.
²The normally closed terminal (87A) is not con-
nected to any circuit in this application, but provides
a battery current output only when the blower motor
relay coil is de-energized.
Refer to the appropriate wiring information for
diagnosis and testing of the micro-relay and for com-
plete HVAC wiring diagrams.
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the cover from the integrated power
module (IPM) (Fig. 13).
NOTE: Refer to the fuse and relay map on the inner
surface of the cover of the IPM for front blower
motor relay identification and location.
(3) Remove the front blower motor relay from the
IPM
INSTALLATION
NOTE: Refer to the fuse and relay map on the inner
surface of the cover of the integrated power module
(IPM) for front blower motor relay identification and
location.
(1) Position the front blower motor relay to the
proper receptacle in the IPM.
(2) Align the front blower motor relay terminals
with the terminal cavities in the IPM receptacle.
(3) Push down firmly on the front blower motor
relay until the terminals are fully seated in the ter-
minal cavities.
(4) Install the cover onto the IPM.(5) Reconnect the negative battery cable.
BLOWER MOTOR RESISTOR
BLOCK
DESCRIPTION
A blower motor resistor is used on this model when
it is equipped with the manual heater-A/C system.
Models equipped with the optional Automatic Tem-
perature Control (ATC) system use a blower power
module, instead of the blower motor resistor block
(Refer to 24 - HEATING & AIR CONDITIONING/
CONTROLS/POWER MODULE - DESCRIPTION).
The blower motor resistor block is mounted to the
rear of the HVAC housing, directly behind the glove
box opening in the instrument panel. The resistor
block consists of a molded plastic mounting plate
with two integral connector receptacles. Concealed
behind the mounting plate are four coiled resistor
wires contained within a protective stamped steel
cage. The blower motor resistor block is accessed for
service by removing the glove box from the instru-
ment panel.
OPERATION
The blower motor resistor block is connected to the
vehicle electrical system through a dedicated take
out and connector of the instrument panel wire har-
ness. A second connector receptacle receives the pig-
tail wire connector from the blower motor. The
blower motor resistor has multiple resistor wires,
Fig. 13 Front Blower Motor Relay
1 - INTEGRATED POWER MODULE (IPM)
2 - FRONT BLOWER MOTOR RELAY
2 - FRONT CONTROL MODULE (FCM)
24 - 24 CONTROLS - FRONTRS
BLOWER MOTOR RELAY (Continued)

each of which will reduce the current flow through
the blower motor to change the blower motor speed.
The blower motor switch in the manual heater-A/C
system directs the ground path for the blower motor
through the correct resistor wire to obtain the
selected speed.
With the blower motor switch in the lowest speed
position, the ground path for the motor is applied
through all of the resistor wires. Each higher speed
selected with the blower motor switch applies the
blower motor ground path through fewer of the resis-
tor wires, increasing the blower motor speed.
The blower motor resistor cannot be adjusted or
repaired and, if faulty or damaged, it must be
replaced.
DIAGNOSIS AND TESTING
FRONT BLOWER MOTOR RESISTOR BLOCK
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.
For circuit descriptions and diagrams, refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector repair procedures, further details on wire
harness routing and retention, as well as pin-out and
location views for the various wire harness connec-
tors, splices and grounds.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the glove box from the instrument
panel (Refer to 23 - BODY/INSTRUMENT PANEL/
GLOVE BOX - REMOVAL).
(3) Disconnect the two wire harness connectors
from the blower motor resistor block.
(4) Check for continuity between each of the
blower motor switch input terminals of the resistor
and the resistor output terminal. In each case there
should be continuity. If OK, repair the wire harness
circuits between the blower motor switch and the
blower motor resistor, blower motor or blower motorrelay as required. If not OK, replace the faulty
blower motor resistor block.
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
BLOCK MAY GET VERY HOT DURING NORMAL
OPERATION. IF THE BLOWER MOTOR WAS
TURNED ON PRIOR TO SERVICING THE BLOWER
MOTOR RESISTOR BLOCK, WAIT FIVE MINUTES
TO ALLOW THE BLOWER MOTOR RESISTORS TO
COOL BEFORE PERFORMING DIAGNOSIS OR SER-
VICE. FAILURE TO TAKE THIS PRECAUTION 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) Remove the glove box from the instrument
panel (Refer to 23 - BODY/INSTRUMENT PANEL/
GLOVE BOX - REMOVAL).
(3) Disconnect the two wire harness connectors
from the blower motor resistor block (Fig. 14).
(4) Remove the two screws that secure the blower
motor resistor block to the HVAC housing.
(5) Remove the resistor block from the HVAC
housing.
INSTALLATION
(1) Position the blower motor resistor block into
the HVAC housing.
(2) Install the two screws that secure the blower
motor resistor block to the HVAC housing. Tighten
the screws to 2 N´m (17 in. lbs.).
(3) Connect the two wire connectors to the resistor
block.
RSCONTROLS - FRONT24-25
BLOWER MOTOR RESISTOR BLOCK (Continued)

The evaporator temperature sensor cannot be
adjusted or repaired and, if faulty or damaged, it
must be replaced.
OPERATION
The evaporator temperature sensor monitors the
temperature of the conditioned air once it passes
through the A/C evaporator. The evaporator temper-
ature sensor will change its internal resistance in
response to the air temperatures it monitors and is
connected to the A/C-heater control through sensor
ground and signal circuits. As the conditioned air
temperature increases, the resistance of the evapora-
tor temperature sensor decreases and the voltage
monitored by the A/C-heater control decreases. The
external location of the evaporator temperature sen-
sor allows the sensor to be removed or installed with-
out disturbing the refrigerant in the A/C system.
The A/C-heater control uses this monitored voltage
reading as an indication of the evaporator tempera-
ture. The A/C-heater control is programmed to
respond to this input by sending electronic messages
to the powertrain control module (PCM) over the con-
troller area network (CAN) data bus. The PCM then
cycles the A/C compressor clutch as necessary to opti-
mize A/C system performance and to protect the A/C
system from evaporator freezing.
The evaporator temperature sensor cannot be
adjusted or repaired and, if faulty or damaged, it
must be replaced.
The evaporator temperature sensor is diagnosed
using the DRBIIItscan tool. Refer to Body Diagnos-
tic Procedures.
REMOVAL
RG MODELS
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the air cleaner housing from the right
side of the engine compartment.
(3) Remove the windshield wiper assembly from
the vehicle (Refer to 8 - ELECTRICAL/WIPERS/
WASHERS/WIPER MODULE - REMOVAL).
(4) Remove the temperature sensor retainer from
the expansion valve (Fig. 17).
(5) Pull the evaporator temperature sensor away
from the expansion valve far enough to access the
red release ring on the wiring connector. Push the
red ring toward the connector to release the lock and
disconnect the wire harness connector from the tem-
perature sensor.
(6) Remove the evaporator temperature sensor
from the engine compartment.
RS MODELS
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the instrument panel from the vehicle
(Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL ASSEMBLY - REMOVAL).
(3) Disconnect the wire harness connector from the
evaporator temperature sensor located on the top of
the HVAC housing (Fig. 18).
(4) Remove the evaporator temperature sensor
from the HVAC housing.
INSTALLATION
RG MODELS
NOTE: Any grease removed with the evaporator
temperature sensor must be replaced. Failure to do
so could result in poor A/C performance.
(1) Position the evaporator temperature sensor
into the right rear corner of the engine compartment.
(2) Reconnect the wire harness connector to the
evaporator temperature sensor.
(3) Position the evaporator temperature sensor
onto the top of the expansion valve with the sensor
probe inserted into the well in the expansion valve.
(4) Install the temperature sensor retainer.
(5) Install the window wiper module (Refer to 8 -
ELECTRICAL/WIPERS/WASHERS/WIPER MOD-
ULE - INSTALLATION).
(6) Reinstall the air cleaner housing into the right
side of the engine compartment.
(7) Reconnect the battery negative cable.
Fig. 17 Evaporator Temperature Sensor - RG Models
1 - RIGHT FRONT STRUT TOWER
2 - EVAPORATOR TEMPERATURE SENSOR
3 - EXPANSION VALVE
4 - DASH PANEL
5 - RETAINER
RSCONTROLS - FRONT24-27
EVAPORATOR TEMPERATURE SENSOR (Continued)