For 1990-2009 cars

Both power seats receive power from the fuse block PWR SEAT/PSD circuit breaker through CKT 340 to S302. S302 then splits and goes to each seat adjuster switch. The seat adjuster switches are grounded through CKT 550 and S333 to G301.

Three reversible motors operate each power seat. Separate motors operate the front height and rear height of the seats. Each seat may be raised or lowered independently of the other. When the entire seat adjuster switch is pushed to the up or down position, both motors run in order to move the front and the rear of the seat at the same time.

The entire seat adjuster switch operates the forward/back adjuster motor. When the entire seat adjuster switch is held in the forward position, the battery voltage is applied through the switch contacts and CKT 285 to the forward/back adjuster motor. The motor is grounded through CKT 284. The seat adjuster switch is grounded through CKT 550 to G301.

In the back position, CKT 284 receives battery voltage and CKT 285 is grounded. This reversed polarity causes the motor to run in the opposite direction and drive the seat backward.

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

In order to raise the entire seat, the entire seat adjuster switch is held in the up position. This applies battery voltage through CKT 282 and CKT 286 to the rear height adjuster motor and the front height adjuster motor. The motors are grounded through CKT 283 and CKT 287. The seat adjuster switch is grounded through CKT 550 to G301. Both motors run in order to drive the entire seat up. A similar action occurs in order to move the entire seat down.

Each motor contains a solid state self-resetting circuit breaker in order to protect the motor from overload. The electronic circuit breaker (ECB) resistance increases if a motor is overloaded and returns to normal after the voltage is removed from the motor terminal.