2. Connect the new heating element electrical con-
nectors (3&4).
3. Connect the battery negative cable.
4. Verify heated seat system operation.
5. Install the appropriate seat cushion, (Refer to 23 -
BODY/SEATS/SEAT CUSHION COVER - INSTAL-
LATION) or seat back trim cover, (Refer to 23 -
BODY/SEATS/SEAT BACK CUSHION / COVER -
INSTALLATION).
NOTE: Make certain the seat wire harness is cor-
rectly routed through the seat and seat back. The
excess wire between the cushion and back ele-
ments should be securely tucked between the rear
of the cushion foam and the rear carpet flap of the
trim cover.
MODULE-HEATED SEATS
DESCRIPTION
The heated seat module (3) is located under the right
front seat (1). It has a single electrical connector (2)
and four locking tabs that secure it to the mounting
bracket (4). The module can be accessed from under
the front right seat with the seat in the full back posi-
tion. The mounting bracket (4) is bolted to the seat
frame assembly (5)
The heated seat module is a microprocessor designed
to use Controller Area Network (CAN) data bus mes-
sages from the instrument cluster also known as the
Cabin Compartment Node (CCN). The CCN receives
inputs from the heated seat switches and in turn sig-
nals the heated seat module to operate the heated
seat elements for both front seats.
OPERATION
The heated seat module operates on fused battery current received from the ignition switch. The module is
grounded to the body at all times through the electrical connector. Inputs to the module include Controller Area
Network (CAN) data bus messages and standard hardwired 12volt power and ground. In response to the CAN
inputs the heated seat module will control the battery current to the appropriate heated seat elements.
When a heated seat switch CAN data bus signal is received by the heated seat module, the module energizes the
selected heated seat element. The Low heat set point is about 38C (100.4°F), and the High heat set point is about
42C (107.6°F).
8G - 62
HEATED SEATS - SERVICE INFORMATION
WK