Chrysler Pacifica. Manual — part 889
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) located in the engine compartment
(Fig. 2).
NOTE: Refer to the fuse and relay map on the IPM
cover for rear blower motor relay location.
(3) Remove the rear blower motor relay from the
IPM.
INSTALLATION
NOTE: Refer to the fuse and relay map on the cover
of the integrated power module (IPM) for rear
blower motor relay location.
(1) Position the rear blower motor relay to the
proper receptacle in the IPM.
(2) Align the rear blower motor relay terminals
with the terminal cavities in the IPM receptacle and
push down firmly on the relay until the terminals
are fully seated.
(3) Install the cover onto the IPM.
(4) Reconnect the negative battery cable.
BLOWER MOTOR SWITCH
DESCRIPTION
The rear blower motor is controlled by a rotary-
type blower motor switch, mounted in the rear center
console (Fig. 3). The rear blower motor switch allows
the selection of rear blower motor speeds, Auto and
an Off position when the front A/C-heater control is
set to the Rear position, otherwise the front A/C-
heater control operates both the front and rear
blower motors.
OPERATION
When the front A/C-heater control display for the
automatic temperature control (ATC) heating-A/C
system reads REAR AUTO or when the rear blower
fan is off, the switch located in the center console
between the second row seats is not functional. When
the front A/C-heater control display reads REAR,
only the rear seat occupants control the rear blower
fan speed from the rear switch. When in the Rear
mode, the rear occupants can set the rear switch to
any fan speed including OFF or AUTO. While in the
Auto position, the rear fan speed will be automati-
cally controlled. Refer to Body Diagnostic Procedures
for further diagnostic information.
REMOVAL
NOTE: The rear blower motor switch and the rear
floor console switch bezel are serviced only as an
assembly.
(1) Disconnect and isolate the negative battery
cable.
Fig. 2 Integrated Power Module (IPM)
1 - BATTERY
2 - INTEGRATED POWER MODULE (IPM)
3 - BATTERY THERMAL GUARD
Fig. 3 Rear Blower Motor Switch
1 - REAR BLOWER MOTOR SWITCH
2 - REAR CONTROL PANEL
CS
CONTROLS - REAR
24 - 33
BLOWER MOTOR RELAY (Continued)
2005 CS Service Manual
Publication No. 81-270-05050
05CS24-33
July, 2004
(2) Remove the rear floor console (Refer to 23 -
BODY/INTERIOR/REAR
FLOOR
CONSOLE
-
REMOVAL).
(3) Remove the rear floor console switch bezel by
releasing the retaining tab located at each end of the
switch bezel and pushing it out through the front sur-
face of the console (Fig. 4).
(4) Disconnect the wire harness connectors from the
rear blower motor switch and the rear heated seat
switches.
(5) Remove the rear heated seat switches from the
rear floor console switch bezel by gently prying the
switches free from the back of the switch bezel (Refer
to 8 - ELECTRICAL/HEATED SEATS/HEATED SEAT
SWITCH-2ND ROW- REMOVAL).
INSTALLATION
(1) Install the rear heated seat switches into the
back of the rear floor console switch bezel. Make sure
that the switch retaining tabs are fully engaged to the
bezel (Refer to 8 - ELECTRICAL/HEATED SEATS/
HEATED SEAT SWITCH-2ND ROW - INSTALLA-
TION).
(2) Connect the wire harness connectors to the rear
blower motor switch and the rear heated seat switches.
(3) Install the rear floor console switch bezel into
the rear floor console by pushing it in through the
front surface of the console. Make sure that the bezel
retaining tabs are fully engaged to the console.
(4) Install the rear floor console (Refer to 23 -
BODY/INTERIOR/REAR
FLOOR
CONSOLE
-
INSTALLATION).
(5) Reconnect the negative battery cable.
MODE DOOR ACTUATOR
DESCRIPTION
The mode door actuator used in the rear center floor
console when equipped with the automatic tempera-
ture control (ATC) heating-A/C system, is a reversible,
12-volt direct current (DC), servo motor (Fig. 5). The
rear mode door actuator is located in the rear blower
motor housing within the center floor console. The rear
mode door actuator is mechanically connected to the
two floor console mode-air doors.
The rear mode door actuator is interchangeable with
the actuator for the front mode-air doors, front blend-
air doors and the recirculation-air door. Each actuator
is contained within an identical black molded plastic
housing with an integral wire connector receptacle.
Each actuator also has an identical output shaft with
splines that connects it to its respective door linkage
and two integral mounting tabs that allow the actuator
to be secured to the rear blower motor housing. The
rear mode door actuator does not require mechanical
indexing to the rear mode-air door linkage, as it is
electronically calibrated by the A/C-heater control.
The A/C-heater control must be recalibrated each
time an actuator motor is replaced (Refer to 24 -
HEATING
& AIR
CONDITIONING/CONTROLS
-
FRONT/A/C HEATER CONTROL - STANDARD PRO-
CEDURE -A/C-HEATER CONTROL CALIBRATION).
OPERATION
The mode door actuator for the center floor console
is connected to the A/C-heater control through the
vehicle electrical system by a dedicated two-wire lead
and connector of the body wire harness. The rear
mode door actuator can move the two floor console
mode-air doors in two directions. When the A/C-heater
control
pulls
the
voltage
on
one
side
of
the
Fig. 4 Rear Blower Motor Switch
1 - REAR FLOOR CONSOLE SWITCH BEZEL
2 - REAR HEATED SEAT SWITCH (2)
3 - SWITCH BEZEL RETAINING TAB (2)
4 - HEATED SEAT SWITCH WIRE CONNECTOR (2)
5 - REAR BLOWER SWITCH (INTEGRAL TO BEZEL)
6 - REAR FLOOR CONSOLE
7 - REAR BLOWER SWITCH WIRE CONNECTOR
Fig. 5 Mode Door Actuator
1 - ACTUATOR MOTOR
2 - WIRE CONNECTOR RECEPTACLE
3 - OUTPUT SHAFT
4 - MOUNTING TAB (2)
24 - 34
CONTROLS - REAR
CS
BLOWER MOTOR SWITCH (Continued)
2005 CS Service Manual
Publication No. 81-270-05050
05CS24-34
July, 2004
motor connection high and the other connection low,
the mode-air doors will move in one direction. When
the A/C-heater control reverses the polarity of the
voltage to the motor, the mode-air doors move in the
opposite direction.
When the A/C-heater control makes the voltage to
both connections high or both connections low, the
mode-air doors stop and will not move.
The A/C-heater control uses a feedback signal posi-
tioning system to monitor the operation and relative
position of the rear mode door actuator and the
mode-air doors. The A/C-heater control learns the
mode-air doors stop positions during the calibration
procedure and will store a diagnostic trouble code
(DTC) for any problems it detects in the rear mode
door actuator circuits.
The rear mode door actuator is diagnosed using a
DRBIII
t scan tool. Refer to 9 - Engine Electrical
Diagnostics for more information.
The rear mode door actuator cannot be adjusted or
repaired and, if faulty or damaged, it must be
replaced.
REMOVAL
(1) Remove the front center floor console cover
(Refer to 23 - BODY/INTERIOR/CENTER CONSOLE
- REMOVAL).
(2) Disconnect and isolate the negative battery
cable.
(3) Disconnect the body wire harness connector
from the rear mode door actuator (Fig. 6).
(4) Remove the two screws that secure the mode
door actuator to the rear blower motor housing and
remove the actuator.
INSTALLATION
(1) Position the rear mode door actuator onto the
rear blower motor housing. If necessary, rotate the
actuator slightly to align the splines on the actuator
output shaft with those in the mode door linkage.
(2) Install the two screws that secure the rear
mode door actuator to the blower motor housing.
Tighten the screws to 2 N·m (17 in. lbs.).
(3) Connect the wire harness connector to the rear
mode door actuator.
(4) Reconnect the negative battery cable.
(5) Install the front center floor console cover
(Refer to 23 - BODY/INTERIOR/CENTER CONSOLE
- INSTALLATION).
(6) Calibrate the A/C-heater control (Refer to 24 -
HEATING & AIR CONDITIONING/CONTROLS -
FRONT/A/C
HEATER
CONTROL
-
STANDARD
PROCEDURE -A/C-HEATER CONTROL CALIBRA-
TION).
BLOWER MOTOR POWER
MODULE
DESCRIPTION
A rear blower motor power module is used on this
model when it is equipped with the automatic tem-
perature control (ATC) heating-A/C system (Fig. 7).
The blower motor power module is installed in the
rear blower motor housing, which is located within
the center floor console. The power module consists of
a molded plastic mounting plate with two integral
wire harness connector receptacles. Concealed behind
the mounting plate within the blower motor housing
is the power module electronic circuitry and a large
finned, heat sink. The module mounting plate is
secured with two screws to the rear blower motor
housing and is accessed for service by removing the
front center floor console.
Fig. 6 Mode Door Actuator - Floor Console
1 - MODE DOOR ACTUATOR
2 - REAR BLOWER MOTOR HOUSING
3 - SCREW (2)
4 - WIRE HARNESS CONNECTOR
CS
CONTROLS - REAR
24 - 35
MODE DOOR ACTUATOR (Continued)
OPERATION
The rear blower motor power module is connected
to the vehicle electrical system through a dedicated
wire harness lead and connector of the body wire
harness. A second connector receptacle receives the
wire harness connector from the rear blower motor.
The rear blower motor power module allows the
microprocessor-based automatic temperature control
(ATC) A/C-heater control to calculate and provide
infinitely variable blower motor speeds based upon
either manual blower switch input or the ATC pro-
gramming using a pulse width modulated (PWM) cir-
cuit strategy.
The PWM voltage is applied to a comparator cir-
cuit which compares the PWM signal voltage to the
rear blower motor feedback voltage. The resulting
output drives the power module circuitry, which
adjusts the voltage output received from the rear
blower motor relay to change or maintain the desired
rear blower motor speed.
The rear blower motor power module is diagnosed
using a DRBIII
t scan tool. Refer to Body Diagnostic
Procedures.
The rear blower motor power module cannot be
adjusted or repaired and, if faulty or damaged, it
must be replaced.
REMOVAL
(1) Remove the rear center console upper cover
(Refer to 23 - BODY/INTERIOR/CENTER CONSOLE
- REMOVAL).
(2) Disconnect and isolate the negative battery
cable.
(3) Disconnect the body wire harness connector
from the rear blower motor power module (Fig. 8).
(4) Disconnect the rear blower motor wire harness
connector from the power module.
(5) Remove the two screws that secure the power
module to the rear blower motor housing.
(6) Remove the power module from the blower
motor housing.
INSTALLATION
(1) Position the rear blower motor power module
into the rear blower motor housing.
(2) Install the two screws that secure the power
module to the blower motor housing. Tighten the
screws to 2 N·m (17 in. lbs.).
(3) Reconnect the blower motor wire harness con-
nector to the power module.
(4) Reconnect the body wire harness connector to
the power module.
(5) Reconnect the negative battery cable.
(6) Install the front center floor console cover
(Refer to 23 - BODY/INTERIOR/CENTER CONSOLE
- INSTALLATION).
Fig. 7 Blower Motor Power Module
1 - BLOWER MOTOR POWER MODULE
2 - HEAT SINK
Fig. 8 Rear Blower Motor Power Module
1 - BLOWER MOTOR WIRE CONNECTOR
2 - BODY HARNESS WIRE CONNECTOR
3 - REAR BLOWER MOTOR POWER MODULE
4 - REAR BLOWER MOTOR HOUSING
5 - SCREW (2)
24 - 36
CONTROLS - REAR
CS
BLOWER MOTOR POWER MODULE (Continued)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст