Dodge Caliber. Manual - part 1413

CONTROL-A/C HEATER

DESCRIPTION

NOTE: Typical A/C-heater control shown.

The A/C-heater control (1) for the manual temperature
control (MTC) single zone system allows one temper-
ature setting for the entire vehicle. All controls are
identified by ISO graphic symbols.

The heating-A/C system uses a combination of electri-
cal and cable operated controls. These controls pro-
vide the vehicle operator with a number of setting
options to help control the climate and comfort within
the vehicle.

The A/C-heater control is located in the instrument
panel and contains:

•

a rotary control for mode control of the dis-
charged air (2).

•

a rotary control for blower motor speed selection
and to turn the blower motor off (3).

•

a rotary control for temperature control of the dis-
charged air (4).

•

a push-button control to turn the rear window defogger system on and off (5).

•

a push-button control for recirculation control of the discharged air (6).

•

a push-button control to turn the A/C system on and off (7).

The A/C-heater control cannot be repaired and, if faulty or damaged, it must be replaced. The control knobs for the
A/C-heater control are available for service replacement.

REMOVAL

WARNING: Disable the airbag system before attempting any steering 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.
This is the only sure way to disable the airbag system. Failure to take the proper precautions could result
in accidental airbag deployment and possible personal injury or death.

NOTE: Typical A/C-heater control and center bezel shown.

CONTROLS

24 - 69

1. Disconnect and isolate the negative battery cable.

2. Remove the center bezel (7) from the instrument

panel and disconnect the wiring connector for the
clock, power window switches and the accessory
switches, as equipped (refer to 23 - BODY/IN-
STRUMENT

PANEL/BEZEL-CENTER

REMOVAL).

NOTE: To aid in reinstallation, note the installed
positions of the control cables prior to removal.

3. Using a small screwdriver or similar tool, disengage

the retaining clips that secure the control cables (1
and 9) to the back of the A/C-heater control (8).

4. Using a small screwdriver or similar tool, disengage

the retaining clips that secure the control cables to
the mode control sector gear (2) and the tempera-
ture control sector gear (5).

5. Disconnect the wire harness connectors (3 and 4)

from the rear of the A/C-heater control and place the center bezel on a work bench.

6. Remove the four screws (6) that secure the A/C-heater control to the back of the center bezel and remove the

control.

INSTALLATION

NOTE: Typical A/C-heater control and center bezel shown.

1. Install the A/C-heater control (8) into the instrument

panel center bezel (7).

2. Install the four screws (6) that secure the A/C-

heater control to the center bezel. Tighten the
screws to 2 N·m (17 in. lbs.).

3. Position the center bezel to the instrument panel

and connect the wire harness connectors (3 and 4)
to the back of the A/C-heater control.

NOTE: Install the mode control cable onto the A/C
heater control first. Then install the temperature
control cable.

4. Connect the control cables (1 and 9) to the mode

door control sector gear (2) and the temperature
control sector gear (5) and fully engage the retain-
ing clips. Make sure the retaining clips are fully
engage to the sector gears.

5. Connect the control cables to the back of the A/C-

heater control and fully engage the retaining clips. Make sure the retaining clips are fully engage to the back of
the A/C-heater control.

6. Connect the wire harness connectors to the accessory switches, power window switches and clock, as equipped

and install the center bezel (refer to 23 - BODY/INSTRUMENT PANEL/BEZEL-CENTER - INSTALLATION).

7. Reconnect the negative battery cable.

24 - 70

CONTROLS

RESISTOR-BLOWER MOTOR

DESCRIPTION

The blower motor resistor is mounted to the bottom of
the HVAC housing on the passenger side of the vehi-
cle. The blower motor resistor consists of a molded
plastic mounting plate (1) with an integral wire connec-
tor receptacle (2). Concealed behind the mounting
plate are resistors (3) located between a two-piece
stamped steel base (4).

OPERATION

The blower motor resistor is connected to the vehicle electrical system through a dedicated take out and connector
of the instrument panel wire harness. The blower motor resistor has three resistors, each of which will reduce the
current flow through the blower motor to change the blower motor speed.

The blower motor control for the heating-A/C system directs the ground path for the blower motor through the cor-
rect resistor to obtain the selected speed. With the blower motor control in the lowest speed position, the ground
path for the blower motor is applied through all of the resistors. Each higher speed selected with the blower motor
control applies the blower motor ground path through fewer of the resistors, increasing the blower motor speed.
When the blower motor control is in the highest speed position, the blower motor resistor is bypassed and the
blower motor receives a direct path to ground.

The blower motor resistor cannot be adjusted or repaired and, if faulty or damaged, it must be replaced.

DIAGNOSIS AND TESTING

BLOWER MOTOR RESISTOR

NOTE: For circuit descriptions and diagrams, refer to the appropriate wiring information. The wiring infor-
mation includes wiring diagrams, proper wire and connector repair procedures, further details on wire har-
ness routing and retention, as well as pin-out and location views for the various wire harness connectors,
splices and grounds.

1. Disconnect and isolate the negative battery cable.

2. Disconnect the wire harness connector from the blower motor resistor (refer to 24 - HEATING & AIR CONDI-

TIONING/CONTROLS/RESISTOR-BLOWER MOTOR - REMOVAL).

3. Using an ohmmeter, check for continuity between all of the blower motor resistor terminals. In each case there

should be continuity. If OK, repair the wire harness circuits between the blower motor speed control and the
blower motor resistor or blower motor as required. If not OK, replace the faulty blower motor resistor.

CONTROLS

24 - 71

REMOVAL

WARNING: The blower motor resistor may get very hot during normal operation. If the blower motor was
turned on prior to servicing the blower motor resistor, wait five minutes to allow the blower motor resistors
to cool before performing diagnosis or service. Failure to take this precaution can result in possible per-
sonal 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.

NOTE: LHD model shown. RHD model similar.

1. Disconnect and isolate the negative battery cable.

2. Disconnect the wire harness connector (1) from the

blower motor resistor (2) located on the bottom of
the passenger side of the HVAC housing (3).

3. Remove the two screws (4) that secure the blower

motor resistor to the HVAC housing and remove
the resistor.

INSTALLATION

NOTE: LHD model shown. RHD model similar.

1. Position the blower motor resistor (2) onto the bot-

tom of the passenger side of the HVAC housing
(3).

2. Install the two screws (4) that secure the blower

motor resistor to the HVAC housing. Tighten the
screws to 1.2 N·m (10 in. lbs.).

3. Connect the wire harness connector (1) to the

blower motor resistor.

4. Reconnect the negative battery cable.

24 - 72

CONTROLS

Content .. 1411 1412 1413 1414 ..