Power Seats System

Power Seats System Description and Operation

The passenger power seat system consists of the following components:

* Seat adjuster switch
* Seat horizontal motor
* Seat front vertical motor
* Seat rear vertical motor
* Seat recline motor
* SEATS circuit breaker 30 A

Seat Adjuster Switch

The seat adjuster switch provides both power and ground to the selected seat motors. Battery positive voltage is supplied at all times to the driver seat adjuster switch from the PWR SEATS circuit breaker located in the under hood fuse block. The switch is grounded through the switch ground circuit and G301.

Motors

All of the seat motors operate independently of each other. Each motor contains an electronic circuit breaker (PTC) that opens in the event of a circuit overload and will reset only after voltage has been removed from the circuit. There are 3 seat position motors. These are the horizontal motor, front vertical motor and the rear vertical motor. The horizontal motor moves the entire seat forward and rearward. The seat vertical motors may operate independently to tilt the front or rear of the seat cushion up or down. Both motors can also run simultaneously to move the entire seat up or down.

When a seat switch is operated, battery positive voltage and ground are applied through the switch contacts and the motor control circuits to the motor. The motor runs in order to drive the seat until the switch is released. When the switch is operated in the opposite direction, battery positive voltage and ground are applied on opposite circuits causing the motor to run in the other direction.