Power Seats

The LH and RH power seat system each consists of the seat switch and five reversible motors (front height, rear height, forward/back, recline, headrest) which operate independently of each other.

The seat switch, located on each seat, directly controls the five motors located on that seat. Power for both seats is provided through the PWR SEAT circuit breaker in the rear junction block. Each motor contains its own electronic circuit breaker (PTC) which will trip at the end of travel. It resets only after voltage is removed from the motor.

When the entire seat switch is pushed to the FORWARD position, battery positive voltage (B+) is applied via the forward switch contacts to the forward/back motor. The motor is grounded via the back switch contacts to ground. The motor runs to drive the seat forward until the switch is released or the end of travel is reached. The BACK position works similar to the FORWARD position except that the voltage polarity is reversed causing the motor to run in the opposite direction driving the seat backward.

The front height, rear height, recline, and headrest motors work in a similar way when the front height, rear height. recline, and headrest switches are operated independently.

When the entire seat switch is pushed to the UP position, battery voltage is applied via the up switch contacts to the front height and rear height motors. The motors are grounded via the down switches that are not being operated. Both motors run to drive the entire seat up. A similar action occurs to move the entire seat down.