There are 4 reversible motors that operate the power seats. The seat horizontal motor is operated by the entire seat switch. When the switch is held in the FORWARD position, battery positive voltage (B+) is applied through the forward switch contacts to the seat horizontal motor. The motor is grounded through the contact of the BACK position switch to ground. The motor runs and drives the seat forward until the switch is released. The BACK position works similar to the FORWARD position, except the voltage to the motor is reversed. This reversed polarity causes the following results:
• | The motor runs in the opposite direction. |
• | The motor drives the seat backward. |
The front and the rear of a seat are controlled by different motors. The seat front and the seat rear vertical motors work in a similar way to the seat horizontal motor when the front or the rear vertical switch is operated. These motors can be raised or lowered independently of each other. In order to raise the entire seat, hold the entire seat switch in the UP position. This action applies battery positive voltage (B+) to the seat front vertical and to the seat rear vertical motors. The motors are grounded through the switches that were not operated. Both of the motors run in order to drive the entire seat up. A similar action occurs in order to move the entire seat down.
The seat recline motor also operates in a similar way to the other motors when the recline switch is operated. The seat back can be reclined up or down.
Each motor contains an electronic circuit breaker (PTC). When the seat has reached the end of travel in any direction, the motor stalls. The circuit breaker opens, stopping the motor. The circuit breaker resets only after voltage is removed from the motor.