ker88839_ch15.qxd
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Body Accessory Systems Operation
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armatures in one housing (Figure 15-28). The control switches have two two-position knobs that control edge tilt and a four-position knob that controls forward, backward, up and down seat movement. The switch contacts shift the current to different motor brushes to control motor reversal. The permanent-magnet motors are grounded through the switch and may contain an internal circuit breaker.
HEATED SEATS Most manufacturers of premium cars and SUVs offer heated front seats, and in some cases back seats as well (Figure 15-29). Most vehicle heated seat systems consist of four heated seats: two in the front and two in the rear. Figure 15-30 shows a typical heated seat system schematic. Most heated seat systems consist of the following components: • • • • Figure 15-28. Chrysler, Ford, and late-model GM sixway power seat systems use three reversible motor armatures in one housing. (DaimlerChrysler Corporation)
Heated seat module or controller Heated seat switch Seat back heating element Seat cushion heating element
The rear integration module (RIM), driver door module (DDM), left rear door module
2 3 4
1 (1) Heated Seat Switch - Driver (2) Heated Seat Switch - Front Passenger (3) Console Trim Plate (4) Traction Control Switch
Figure 15-29. Heated seat controls. (GM Service and Parts Operations)
