Seats: Description and Operation

BASE POWER SEATS
There are three reversible Motors that operate the Power Seats. The front and back height of the seat are operated by different Motors. They can be raised or lowered independently of each other. When the Entire Power Seat Switch is pushed to the "UP" or "DOWN" position, both Motors run to move the front and back of the seat at the same time.

The Forward-Back Moor is operated by the Entire Power 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 contacts of the Entire Seat Switch to ground G202. The Motor runs to drive the seat forward until the switch is released.

In the "BACK" position, battery voltage and ground are 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 when the Front or Rear Height Switch is operated.

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 through the Entire Seat Switch "DOWN" contacts. Ground is provided to the "UP" contacts to G202. Both Motors run to drive the entire seat up. A similar action occurs to move the entire seat down with the exception that the polarity is reversed.

Each Motor contains a solid state self-resetting circuit breaker to protect it from overload.

SPORT SEATS
There are three reversible motors that operate the Power Seats. The front and back height of the seat are operated by different motors. They can be raised or lowered independently of each other. When the entire Power Seat Switch is pushed to the "UP" or "DOWN" position, both motors run to move the front and back of the seat at the same time. A Seat Select Switch and a relay for each operation allow for choosing between the driver or passenger seat.

The Forward/Back Motor is operated by the entire Power Seat Switch. When it is held in the "FORWARD" position, battery voltage is applied through the switch contacts to the Forward/Back Relay. From the relay, voltage is directed to the motor. The motor is grounded through the Power Seat Switch to ground G202. The polarity of the voltage is reversed when the switch is held in the "BACK" position. 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 when the Front or Rear Height Switch is operated.

To raise the entire seat, the entire Power Seat Switch is held in the "UP" position. This applies battery voltage to both the Rear and Front Height Relays respectively. These relays direct the voltage to the Rear and Front Height Motors. The motors are grounded via the Power Seat Switch to ground G202. Both motors run to drive the seat up. With the entire Power Seat Switch held in the "DOWN" position, a similar action occurs to move the entire seat down.

Each motor contains a solid state self-resetting circuit breaker to protect it from overload.

The Lumbar Support function has individual adjustments for the Lower, Middle and Upper Back Supports as well as an adjustment for the Side Bolsters. A separate switch allows the operator to choose between the driver or passenger seat.

Battery voltage is directed through the Seat Select Switch and onto the Solenoid Box and either the Inflate or Deflate Relay located within the Seat Control Module. The relays, in turn, direct voltage to the Seat Air Pump Motor while the solenoids control the flow of air being pumped in or out of each Lumbar Support or Side Bolster air bladders. A pneumatically operated Pressure Cut-out Switch controls a Pressure Cut-out Relay to switch off the motor as necessary.

The Seat Air Pump Motor is protected by a built-in circuit breaker which will open the circuit in case of an overload to protect the motor. The circuit breaker will reset automatically when cool.