Power Seats

There are four reversible motors that operate the power seats. These motors are a front height motor, a rear height motor a forward/back motor and a recline motor.

The forward/back motor is operated by the entire seat switch. When it is held in the FORWARD position, battery voltage is applied through the switch contacts to the forward/back motor. The motor is grounded through the contact of the BACK position switch to ground. The motor runs to drive 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 motor to run in the opposite direction and drive the seat backward.

The front and rear height motors work in a similar way to the forward/back motor when the front or rear tilt switch is operated. The front and rear of a seat are operated by different motors. They can be raised or lowered independently of each other. When the entire seat switch is pushed to the UP or DOWN position, both motors run to move the front and rear of the seat at the same time. To raise the entire seat, the entire seat switch is held in the UP

position. This applies battery voltage to both the front height and rear height motors. The motors are grounded through the switches that were not operated. Both motors run to drive the entire seat up. A similar action occurs to move the entire seat down.

The recline motor works in a similar way to the front and rear height motors when the recline switch is operated. With the recline switch in the recline up position, voltage is applied through the recline up contact to the seat recliner motor. The motor is grounded through the recline contact to ground G202 (LH) or G201 (RH). The motor runs and the seat back moves up.

With the recline switch in the recline back position, voltage is applied to the seat recliner motor through the recline back contact, and grounded through the forward contact to ground G202 (LH) or G201 (RH). The motor runs in the opposite direction and the seat back reclines.

Each motor contains an electronic circuit breaker (PTC). It resets only after voltage is removed from the motor.