Heated Seat System; Operation; Diagnosis And Testing - Heated Seat; System - Chrysler Dodge Caravan 2002 Manual

8G - 8

HEATED SEAT SYSTEM

HEATED SEAT SYSTEM (Continued)
• Heated Seat Switch - Two heated seat
switches are used per vehicle, one for the driver and
one for the passenger side front seats. The switches
are mounted to in the instrument panel center stack.
Refer to the description of the heated seat switch
later in this section for additional information.
Hard wired circuitry connects the heated seat sys-
tem components to each other through the electrical
system of the vehicle. These hard wired circuits are
integral to several wire harnesses, which are routed
throughout the vehicle and retained by many differ-
ent methods. These circuits may be connected to each
other, to the vehicle electrical system and to the
heated seat system components through the use of a
combination of soldered splices and splice block con-
nectors. Refer to Wiring for complete system wiring
schematics. The wiring information also includes the
proper wire and connector repair procedures, further
details on wire harness routing and retention, as well
as pin-out and location views for the various wire
harness connectors, splices and grounds.

OPERATION

The heated seat system components operate on
battery current received through a fuse in the Inte-
grated Power Module (IPM) on a fused ignition
switch output (run-acc) circuit so that the system will
CONDITION
NO HEATED SEAT SWITCH
ILLUMINATION WITH
IGNITION ON (SYSTEM ON)
HEATED SEAT SYSTEM DIAGNOSIS
POSSIBLE CAUSES
1. Faulty fuse
2. Faulty components
3. Ground faulty
4. Wiring faulty
only operate when the ignition switch is in the On or
Accessory positions. The heated seat system will be
turned Off automatically whenever the ignition
switch is turned to any position except On or Acces-
sory. Also, the heated seat system will not operate
when the surface temperature of the seat cushion
cover at either heated seat sensor is above the
designed temperature set points of the system. The
heated seat system has a self-diagnostic capability.
When certain failures are detected within the heated
seat system, the system will provide a visual indica-
tion of the failure by flashing the Light Emitting
Diode (LED) indicator lamps located in the heated
seat switches. See the owner's manual in the vehicle
glove box for more information on the features, use
and operation of the heated seat system.

DIAGNOSIS AND TESTING - HEATED SEAT

SYSTEM

Refer toWiring Diagrams for complete wiring
schematics. The wiring information also includes the
proper wire and connector repair procedures, further
details on wire harness routing and retention, as well
as pin-out and location views for the various wire
harness connectors, splices and grounds.
CORRECTION
1. Check heated seat fuse in Integrated Power
Module. Replace fuse, repair short if required.
2. Refer to individual Heated Seat System
components for the proper diagnosis and testing
procedures.
3. Check for ground at heated seat switch and
module. Repair, if required.
4. Check fused ignition switch output (run-acc)
circuits at switch and module. Repair, if required.
RS