The left and the right power seats are capable of electrically moving in the following directions:
• | Forward |
• | Backward |
• | Up |
• | Down |
The left and the right power seats also tilt up or down in the front and in the back. The power seat switch in the seat controls the left and the right power seats. The PWR ACCY fuse A powers the power seats at all times through CKT 540 (ORN). The left power seat grounds through CKT 150 (BLK) at ground G201. The right power seat grounds through CKT 150 (BLK) at ground G402.
Each seat has 3 motors. The power seat forward/rearward motor moves the seat forward and rearward. The power seat front tilt motor moves the front of the seat up or down. The rear tilt motor moves the rear of the seat up or down. The front and the rear tilt motors operate at the same time. The front and the rear tilt motors raise or lower the seat. The motors operate in 1 direction or the other depending on the direction of the current flow. Each motor has an automatic reset thermal circuit breaker. The motor circuit breaker will heat up and open the circuit if the seat motion is restrained. This stops the current flow and the circuit breaker cools down. The circuit breaker automatically closes and the motor operates again when the circuit breaker cools down enough.
The power seat switch consists of 3 momentary action lever switches. The switch contacts close only when the lever is held in position. The front and the rear tilt motors operate by the two-position lever switches. When the front tilt lever moves to the up position, the current flows from the switch through CKT 286 (DK GRN) to the front tilt motor. Since the CKT 283 (LT BLU) wire normally connects to ground in the power seat switch, the motor operates and the seat tilts up. The motor continues to operate until the lever releases or the seat reaches the end of travel. At the end of travel and with the lever switch still in place, the motor will attempt to continue to operate.
When the power seat switch's forward-rearward-up-down lever moves to the up position, voltage is available in both of the following locations:
The other motor leads remain grounded in the power seat switches. Both motors operate at the same time in order to raise the seat without changing the seat tilt. Current direction reverses to both of the motors in order to lower the seat.