Power Seats

There are three reversible motors that operate the power seats. The front and hack of a seat are operated by different motors. They can he 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 back of the seat at the same time.

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 when the front or rear tilt switch is operated.

To raise the entire seat, the entire seat switch is held in the I/P 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.

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

The front and rear height motors work in a similar way when the front or rear tilt switch is operated.

To raise the entire seat, the entire seat switch is held in the I/P 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.

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

Reclining Seats
With the switch in the forward position, voltage is applied through the forward 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 forward.

With the switch in the recline position, voltage is applied to the seat recliner motor through the recline 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.

Lumbar Seats (Oldsmobile)
With the switch in the upper or lower inflate position, voltage is applied through the Seat Solenoid Valve Assembly and the Lumbar Control Module to the Seat Air Pump Assembly. The motor is grounded through the deflate contacts in the Lumbar Control Module to ground G201. The motor runs and the upper or lower portion of the seat back inflates.

With the switch in the upper or lower deflate position, the operation of the Seat Air Pump Assembly motor is similar to the inflate position except the voltage to the motor is reversed. This reversed polarity causes the motor to run in the opposite direction and the upper or lower portion of the seat back deflates.

Lumbar Seats (Buick)
With the switch in the tighten position, current is applied to the Lumbar motor The motor is grounded through the tighten contacts of the Lumbar Switch to ground G202. The motor runs and the seat back moves out.

With the switch in the loosen position, the operation of the Lumbar motor is similar to the tighten position except the current to the motor is reversed. The reversed current causes the motor to run in the opposite direction and the seat back moves in.