Chrysler 2004 Concorde Service Manual page 1576

24 - 8 CONTROLS
A/C COMPRESSOR CLUTCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DIAGNOSIS AND TESTING - COMPRESSOR
CLUTCH COIL . . . . . . . . . . . . . . . . . . . . . . . . . 9
STANDARD PROCEDURE
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STANDARD PROCEDURE - A/C
COMPRESSOR CLUTCH BREAK- IN . . . . . . . . 9
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 11
A/C COMPRESSOR CLUTCH RELAY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 11
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DIAGNOSIS AND TESTING - A/C
COMPRESSOR CLUTCH RELAY
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 12
A/C HEATER CONTROL
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 13
A/C PRESSURE TRANSDUCER
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 14
AMBIENT TEMP SENSOR
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 14
POWER MODULE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 14
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 15
BLOWER MOTOR RESISTOR BLOCK
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 15
A/C COMPRESSOR CLUTCH
DESCRIPTION
The compressor clutch assembly consists of a sta-
tionary electromagnetic coil, a hub bearing and pul-
ley assembly, and a clutch plate. The electromagnetic
coil unit and the hub bearing and pulley assembly
are each retained on the nose of the compressor front
housing with snap rings. The clutch plate is retained
with a bolt. These components provide the means to
engage and disengage the compressor from the
engine serpentine accessory drive belt.
CONTROLS
TABLE OF CONTENTS
page
OPERATION
DIAGNOSIS AND TESTING - BLOWER
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
INSTALLATION
EVAPORATOR TEMPERATURE SENSOR
DESCRIPTION
OPERATION
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
INSTALLATION
IN-CAR TEMPERATURE SENSOR
DESCRIPTION
OPERATION
DIAGNOSIS AND TESTING - IN-CAR SENSOR
. . . . . . . . . . 12 REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
BLEND DOOR ACTUATOR
DESCRIPTION
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
INSTALLATION
MODE DOOR ACTUATOR
DESCRIPTION
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
INSTALLATION
RECIRCULATION DOOR ACTUATOR
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
INSTALLATION
SUN SENSOR
DESCRIPTION
OPERATION
DIAGNOSIS AND TESTING - SUN SENSOR
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
INSTALLATION
OPERATION
When the clutch coil is energized, it magnetically
draws the clutch into contact with the pulley and
drives the compressor shaft. When the coil is not
energized, the pulley freewheels on the clutch hub
bearing, which is part of the pulley. The compressor
clutch and coil are the only serviced parts on the
compressor.
The compressor clutch engagement is controlled by
several components: the a/c heater control head (ATC
or MTC), the evaporator temperature sensor, the a/c
pressure transducer, the compressor clutch relay, and
the Powertrain Control Module (PCM). The PCM
. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MOTOR RESISTOR BLOCK
. . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ASPIRATOR MOTOR
. . . . . . . . . . . . . . . . . . . . . . . . . 18
. . . . . . . . . . . . . . . . . . . . . . . . . 18
. . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . . . . 21
. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
. . . . . . . . . . . . . . . . . . . . . . . . . 22
page
. . . . . . . . . . . . . . 15
. . . . . . . . . . . . . . . . . . . 18
. . . 21
LH