Power Seats

Power seats are optional and may be equipped on the LH seat only or on both front seats. The LH power seat has an option code of AG1. The RH power seat has an option code of AG2.

There are three reversible motors that move each power seat. These motors are a front height motor, a rear height motor and a forward/back motor. Oldsmobile power seats also have power recline which adjusts the angle of the seat back. This is controlled by a recline motor.

Battery positive voltage (B+) is supplied to the seat switches through the IP fuse block PWR STS circuit breaker 3 via CKT 1340 (ORN). The LH seat switch receives ground from G202 via CKT 1250 (BLK). The RH seat switch receives ground from G201 via CKT 1450 (BLK).

The forward/back motor is operated by moving the seat switch. When it is held in the FORWARD position, battery positive voltage (B+) is applied through the forward switch contact to the forward/back motor. The motor is grounded through the back switch contact 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 polarity 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 positive voltage (B+) 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 also 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, battery positive voltage (B+) is applied through the recline up contact to the recline motor. The motor is grounded through the recline contact to ground. The motor runs and the seat back moves up. With the recline switch in the recline DOWN position, battery positive voltage (B+) is applied to the seat recline motor through the recline back contact, and grounded through the forward contact to ground. The motor runs in the opposite direction and the seat back reclines down.

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