Chrysler PT Cruiser. Manual — part 976
DISTRIBUTION
TABLE OF CONTENTS
page
page
AIR FILTER
. . . . . . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . 26
AIR OUTLETS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
. . . . . . . . . . . . . . . . . . . . . . . . . 27
BLOWER MOTOR
. . . . . . . . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
. . . . . . . . . . . . . . . . . . . . . . . . . 29
DEFROSTER DUCT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . 30
FLOOR DISTRIBUTION DUCTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . . . . . . . . . . . 30
HVAC HOUSING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
. . . . . . . . . . . . . . . . . . . . . . . . . 33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
. . . . . . . . . . . . . . . . . . . . . . . . . 33
INSTRUMENT PANEL DEMISTER DUCTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
. . . . . . . . . . . . . . . . . . . . . . . . . 34
INSTRUMENT PANEL DUCTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
. . . . . . . . . . . . . . . . . . . . . . . . . 35
AIR FILTER
DESCRIPTION
Some models are equipped with an air conditioning
system air filter. The filter is mounted under the
hood in the outside-air intake of the HVAC housing.
The filter should be checked and replaced at least
once every 24,000 km (15,000 miles) and checked if
A/C-heater system performance seems lower than
expected.
REMOVAL
(1) Remove the passenger side cowl grille screen
(Refer to 23 - BODY/EXTERIOR/COWL GRILLE
SCREEN - REMOVAL).
(2) Loosen the bolts that secure the windshield
washer reservoir to the body.
NOTE: Removal of the reservoir is not necessary.
Loosen reservoir just enough to allow access to the
filter element.
(3) Remove the filter element by lifting the filter
element up and out of the housing.
INSTALLATION
(1) Install filter element by inserting the element
down directly into the element housing. The filter is
held in place by friction between the filter element
and the housing so no fasteners are used.
(2) Position
windshield
washer
reservoir
and
tighten the retaining bolts to 8 N·m (70 in. lbs.).
(3) Install passenger side cowl grill screen (Refer
to 23 - BODY/EXTERIOR/COWL GRILLE SCREEN -
INSTALLATION).
AIR OUTLETS
REMOVAL
AIR OUTLET DISTRIBUTION DUCT
(1) Remove the instrument panel assembly from
the vehicle (Refer to 23 - BODY/INSTRUMENT PAN-
EL/INSTRUMENT
PANEL
ASSEMBLY
-
REMOVAL).
(2) Remove the screws that secure the air outlet
distribution duct to the instrument panel (Fig. 1).
(3) Disengage the right demister hose from the
integral retainer on the right side of the air outlet
distribution duct.
(4) Disconnect the right demister hose from the
right intermediate demister duct.
(5) Disconnect the left and right demister hoses
from the air outlet distribution duct.
(6) Disengage the air outlet distribution duct from
the left panel duct intermediate elbow.
(7) Disengage the air outlet distribution duct from
the right panel duct.
(8) Remove the air outlet distribution duct from
the instrument panel.
24 - 26
DISTRIBUTION
PT
AIR OUTLET CENTER DUCT
(1) Remove the dash panel top cover (Refer to 23 -
BODY/INSTRUMENT
PANEL/INSTRUMENT
PANEL TOP COVER - REMOVAL).
(2) Remove the center bezel from the instrument
panel (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT
PANEL
CENTER
BEZEL
-
REMOVAL).
(3) Remove the two screws that secure the A/C-
heater control to the instrument panel and position
the control out of the way (Fig. 2).
(4) Remove the screw that secures the air outlet
center duct to the instrument panel.
(5) Disengage the air outlet center duct from the
air outlet distribution duct.
(6) Remove the air outlet center duct from the
instrument panel.
INSTALLATION
AIR OUTLET DISTRIBUTION DUCT
(1) Position the air outlet distribution duct into the
instrument panel.
(2) Engage the air outlet distribution duct to the
right panel duct.
(3) Engage the air outlet distribution duct to the
left panel duct intermediate elbow.
(4) Connect the left and right demister hoses to
the air outlet distribution duct.
Fig. 1 HVAC IP Ducts - LHD Shown, RHD Typical
1 - RIGHT INTERMEDIATE DEMISTER DUCT
2 - SCREW (4)
3 - RIGHT DEMISTER HOSE
4 - LEFT PANEL DUCT INTERMEDIATE ELBOW
5 - AIR OUTLET DISTRIBUTION DUCT
6 - LEFT PANEL DUCT
7 - LEFT DEMISTER HOSE
8 - INSTRUMENT PANEL
9 - RIGHT PANEL DUCT
Fig. 2 Air Outlet Center Duct - LHD Shown, RHD
Typical
1 - INSTRUMENT PANEL
2 - AIR OUTLET CENTER DUCT
3 - SCREW (3)
4 - A/C-HEATER CONTROL
5 - AIR OUTLET DISTRIBUTION DUCT
PT
DISTRIBUTION
24 - 27
AIR OUTLETS (Continued)
(5) Connect the right demister hose to the right
intermediate demister duct.
(6) Engage the right demister hose to the integral
retainer on the right side of the air outlet distribu-
tion duct.
(7) Install the screws that secure the air outlet dis-
tribution duct to the instrument panel. Tighten the
screws to 2 N·m (17 in. lbs.).
(8) Install the instrument panel assembly (Refer to
23 - BODY/INSTRUMENT PANEL/INSTRUMENT
PANEL ASSEMBLY - INSTALLATION).
AIR OUTLET CENTER DUCT
(1) Position the air outlet center duct to the instru-
ment panel.
(2) Engage the air outlet center duct to the air out-
let distribution duct.
(3) Install the screw that secures the air outlet
center duct to the instrument panel. Tighten the
screw to 2 N·m (17 in. lbs.).
(4) Position the A/C-heater control into the instru-
ment panel and install the two retaining screws.
Tighten the screws to 2 N·m (17 in. lbs.).
(5) Install the center bezel onto the instrument
panel (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL CENTER BEZEL - INSTAL-
LATION).
(6) Install the instrument panel top cover (Refer to
23 - BODY/INSTRUMENT PANEL/INSTRUMENT
PANEL TOP COVER - INSTALLATION).
BLOWER MOTOR
DESCRIPTION
The blower motor is a 12-volt, Direct Current (DC)
motor with a squirrel cage-type blower wheel that is
secured to the blower motor shaft (Fig. 3). The
blower motor and wheel are located near the passen-
ger side end of the HVAC housing in the passenger
compartment
below
the
instrument
panel.
The
blower motor and blower motor wheel are a factory
balanced unit and cannot be adjusted or repaired. If
faulty or damaged, the blower motor and blower
wheel must be replaced as a unit (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
BLOWER MOTOR - REMOVAL).
OPERATION
The blower motor will operate whenever the igni-
tion switch is in the On position, and the blower con-
trol switch is in any position except Off. The blower
motor circuit is protected by a fuse in the instrument
panel fuse block. The blower motor speed is con-
trolled by regulating the battery feed through the
blower control switch and the blower motor resistor.
The blower motor and wheel are used to control the
velocity of air moving through the heater-only or A/C-
heater systems. The blower motor controls the veloc-
ity of the air flowing through the HVAC housing by
spinning the blower wheel within the housing at the
selected speed.
DIAGNOSIS AND TESTING
BLOWER MOTOR
WARNING: On vehicles equipped with airbags, dis-
able the airbag system before attempting any steer-
ing wheel, steering column, or instrument panel
component diagnosis or service. Disconnect and
isolate the negative battery (ground) cable, then
wait two minutes for the airbag system capacitor to
discharge before performing further diagnosis or
service. Failure to take the proper precautions
could result in accidental airbag deployment and
possible personal injury or death.
NOTE: For circuit descriptions and diagrams, refer
to Air Conditioning/Heater in Group 8W - Wiring
Diagrams.
OPERATION
Possible causes of an inoperative blower motor or
blower motor not operating in all speeds include:
• Faulty fuse
• Faulty blower motor resistor
• Faulty blower motor switch
• Faulty blower motor
Fig. 3 Blower Motor
1 - BLOWER MOTOR
2 - RUBBER GROMMET
3 - BLOWER MOTOR CONNECTOR
4 - MOUNTING TABS
24 - 28
DISTRIBUTION
PT
AIR OUTLETS (Continued)
• Faulty blower motor circuit wiring or wire har-
ness connectors
VIBRATION
Possible causes of blower motor vibration include:
• Improper blower motor mounting
• Improper blower wheel mounting
• Deformed blower wheel
• Out of balance blower wheel due to foreign
material in the wheel
• Faulty blower motor
NOISE
To determine if the blower motor is the source of
the noise, simply switch the blower motor from Off to
On. To verify that the blower motor is the source of
the noise, unplug the blower motor wire harness con-
nector and operate the heating-A/C system. If the
noise goes away, possible causes include:
• Foreign material in the HVAC air inlet housing
• Improper blower motor mounting
• Improper blower wheel mounting
• Faulty blower motor
REMOVAL
NOTE: The blower motor is located on the bottom
right side of the HVAC housing. The blower motor
can be removed from the vehicle without having to
remove the HVAC housing.
WITH AIR CONDITIONING
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the passenger side door sill scuff plate.
(3) Pull back the carpet to access the blower motor.
(4) Disconnect the blower motor wire harness con-
nector.
(5) Remove the screws that secure the blower
motor to the HVAC housing (Fig. 4).
(6) Remove the blower motor from the HVAC hous-
ing.
WITHOUT AIR CONDITIONING
(1) Disconnect and isolate the negative battery
cable.
(2) Disconnect the blower motor wire harness con-
nector.
(3) Grasp the blower motor while pulling down on
the locking tab. Turn the blower motor approximately
1/8 turn counterclockwise (Fig. 5).
(4) Remove the blower motor from the HVAC hous-
ing.
INSTALLATION
WITH AIR CONDITIONING
(1) Position the blower motor into the HVAC hous-
ing.
(2) Install the blower motor retaining screws.
Tighten the screws to 2 N·m (17 in. lbs.).
(3) Connect the blower motor wire harness connec-
tor.
(4) Reposition the carpet.
(5) Install the door sill scuff plate.
(6) Reconnect the negative battery cable.
WITHOUT AIR CONDITIONING
(1) Position the blower motor into the housing.
Fig. 4 Blower Motor - With A/C, Typical
1 - BLOWER MOTOR
2 - BLOWER MOTOR RETAINING SCREW (3)
3 - BLOWER MOTOR WIRING
Fig. 5 Blower Motor - Without A/C, Typical
1 - HVAC HOUSING
2 - BLOWER MOTOR
PT
DISTRIBUTION
24 - 29
BLOWER MOTOR (Continued)
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