Driver Power Seat Track
The 8-way power seat option includes a electrically operated power seat track located under each front seat. The left side power seat track also provides the mounting location for the body control module on this vehicle. The power seat circuit breakers are mounted on the rear of each power seat track, just behind the seat rear trim panel. The lower half of the power seat track is secured to the floor panel via 4 studs and nuts that must be accessed from the underside of the vehicle. Four bolts secure the bottom of the seat cushion pan to the upper half of the power seat track unit. Four additional bolts secure the seat back frame to the power seat track unit.
The power seat track unit includes 4 reversible electric motors that are secured to the upper half of the track unit. Each motor moves the seat adjuster through a combination or worm-drive gearboxes and screw-type drive units. Each of the 4 power seat track motors used on models equipped with the optional memory system incorporates a position potentiometer integral to the motor assembly, which electronically monitors the motor position. This enables the memory system to function by referencing the motor positions programmed into the memory seat/mirror module.
The front and rear of the seat are operated by 2 separate vertical adjustment motors. These motors can be operated independently of each other, tilting the entire seat assembly forward or rearward; or, they can be operated in unison by selecting the proper power seat switch functions, which will raise or lower the entire seat assembly. A third motor is the horizontal adjustment motor, which moves the seat track in the forward and rearward directions. The fourth motor is the recliner adjustment motor, which moves the seat back in the forward and rearward directions.
The power seat track unit cannot be repaired, and is serviced only as a complete unit. If any component in this unit is faulty or damaged, the entire power seat track unit must be replaced.