Chrysler 2004 Concorde Service Manual page 301

LH
HEATED SEAT SYSTEM
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 9
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DIAGNOSIS AND TESTING - HEATED SEAT
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DRIVER HEATED SEAT SWITCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 11
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DIAGNOSIS AND TESTING - DRIVER HEATED
SEAT SWITCH . . . . . . . . . . . . . . . . . . . . . . . . 12
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 13
PASSENGER HEATED SEAT SWITCH
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 13
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DIAGNOSIS AND TESTING - PASSENGER
HEATED SEAT SWITCH . . . . . . . . . . . . . . . . . 14
HEATED SEAT SYSTEM
DESCRIPTION
Individually controlled, electrically heated front
seats are available as a factory-installed option on
some LH models. Vehicles with this option can be
visually identified by the leather trim seats and the
two separate heated seat switches mounted in the
seat cushion side shields. The heated seat system
allows the front seat driver and passenger to select
from two different levels of electrical seat heating, or
no seat heating to suit their individual comfort
requirements. The heated seat system for this vehicle
includes the following major components, which are
described in further detail later in this section:
• Heated Seat Elements - Four heated seat ele-
ments are used per vehicle, one for each front seat
back and one for each front seat cushion. The heating
elements are integral to the individual front seat and
seat back trim covers and cannot be removed once
installed at the factory. On some models, replacement
seat heating elements/sensor are available, without
having to replace the entire seat cushion or trim
cover. Refer to heated seat element later in this sec-
tion for additional information.
• Memory Heated Seat/Mirror Module - also
referred to as the MHSMM, this module contains the
solid state electronic control and diagnostic logic cir-
cuitry for the heated seat and memory seat/mirror
systems. One module is used per vehicle and is
HEATED SEAT SYSTEM
TABLE OF CONTENTS
page
HEATED SEAT SYSTEM 8G - 9
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 14
HEATED SEAT ELEMENT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 15
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DIAGNOSIS AND TESTING - HEATED SEAT
ELEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 16
HEATED SEAT SENSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 17
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DIAGNOSIS AND TESTING - HEATED SEAT
SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
mounted under the drivers front seat cushion. Refer
to the Electronic Control Modules section for addi-
tional memory heated seat/mirror module informa-
tion.
• Heated Seat Sensors - Two heated seat sen-
sors are used per vehicle, one for each front seat
cushion. The sensors are integral to the individual
front seat cushion heating elements and cannot be
removed once installed at the factory. Refer to heated
seat sensor later in this section for additional infor-
mation.
• Heated Seat Switches - Two heated seat
switches are used per vehicle. One switch is mounted
in each of the front seat cushion side shields. Each
switch includes two Light-Emitting Diode (LED)
HI/LO indicator lamps and an incandescent back
lighting bulb. Refer to the appropriate heated seat
switch later in this section for additional information.
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
page
AIRBAGS. BEFORE