Grand Caravan V6-3.8L VIN L (2007)
Seat Heater: Description and Operation
Heated Seats
Description
DESCRIPTION
Figure 1 HEATED SEAT SWITCH LOCATIONS
Vehicles with the heated seat option can be visually identified by the two separate heated seat switches located in the instrument panel center stack, just
above the radio (Figure 1). The heated seat system allows the front seat driver and passenger to select from two different levels of supplemental electrical
seat heating (HI/LO), or no seat heating to suit their individual comfort requirements. The heated seat system for this vehicle includes the following
major components:
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Heated Seat Elements - Four heated seat elements are used per vehicle, two for each front seat. One heated seat element is integral to each front
seat trim cover, one in the seat back and one in the seat bottom (cushion). Service replacement heating elements are available.
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Heated Seat Modules - Two heated seat modules are used per vehicle. One module is mounted to each of the seat cushion pans, located under the
forward edge of each front seat.
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Heated Seat Sensors - Two heated seat sensors are used per vehicle, one for each front seat. The heated seat sensors are integral to each of the
heated seat bottoms (cushions).
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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 in the instrument panel center stack.
Hard wired circuitry connects the heated seat system components to each other through the electrical system of the vehicle. 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 connectors. Refer to the appropriate wiring information for complete circuit schematic or connector pin-out information.
Operation
OPERATION
The heated seat system components operate on battery current received through a fuse in the Integrated Power Module (IPM) on a fused ignition switch
output (run) circuit from the Body Control Module (BCM). The system will only operate when the ignition switch is in the On position. The heated seat
system will be turned Off automatically whenever the ignition switch is turned to any position except On. 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.
