Chrysler Concorde 1993 Service Manual page 768

The In-Car Temperature Sensor assembly is not
serviceable and must be replaced if found to be defec-
tive.
TEST
(1) Perform air flow test.
(a) Turn ignition to the ON position and push
the OFF button to stop the ATC system airflow.
This will make it easier to observe paper in the
next step.
(b) Place a small piece of tissue paper in front of
the sensor opening. If the tissue sticks to the open-
ing, the In-Car sensor is aspirating properly.
(2) Check if the electrical connection and connector
are good per 1993 LH Body Diagnostic Manual.
(3) Check presence and condition of two foam seals
that are absolutely necessary for proper sensor oper-
ation.
(a) Seal on the inside surface of the trim bezel
directly behind the nameplate.
(b) Seal (strip) located directly to the right of the
right center duct opening.
REMOVAL AND INSTALLATION
(1) Remove right side instrument panel trim end
cap (Fig. 3).
Fig. 3 Trim Cap Removal
(2) Remove right trim bezel from instrument panel
(Fig. 4). It is held in place by friction and a screw.
(3) Remove sensor retaining screws.
(4) Pull out sensor from instrument panel and dis-
connect wiring.
To install, reverse removal procedure.
BLOWER POWER MODULE
The blower motor power module is only used in ve-
hicles equipped with Automatic Temperature Control
(ATC). It is located on the lower right side of the
heater housing.
The power module receives pulse width modulated
signals from the Body Control Module. The power
HEATING AND AIR CONDITIONING
Fig. 4 Trim Bezel Removal
module varies voltage to the blower motor for differ-
ent blower speeds based on the ATC software. There
are 14 speeds and a blower off signal.
REMOVAL AND INSTALLATION
(1) Remove lower right under panel access cover
silence duct.
(2) Disconnect wiring connector on blower motor
module.
(3) Remove blower motor module retaining screws.
(4) Pull blower motor module out of heater housing
(Fig. 5).
Fig. 5 Blower Motor Module Removal
To install, reverse removal procedure.
BLOWER RESISTOR
Vehicles with heater only or manual air condition-
ing (Non-ATC) systems will have a blower motor re-
sistor. The resistor is located on the lower right side
of the heater housing.
REMOVAL AND INSTALLATION
(1) Remove lower right underpanel silencer/duct.
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