Power Seat System Components
The power seat system consists of the following components:
| • | The driver seat adjuster switch |
| • | The passenger seat adjuster switch |
| • | The driver seat relay center |
| • | The passenger seat relay center |
| • | The driver horizontal adjuster motor |
| • | The driver front vertical adjuster motor |
| • | The driver rear vertical adjuster motor |
| • | The passenger horizontal adjuster motor |
| • | The passenger front vertical adjuster motor |
| • | The passenger rear vertical adjuster motor |
| • | The PWR ST/DRV 20A circuit breaker |
| • | The PWR ST/PAS 20A circuit breaker |
Driver and Passenger Power Seat Operation
The seat adjuster motors are controlled by relays through the adjuster
motor supply circuits. The adjuster motor relays are controlled by the seat
adjuster switches. The relay coils are supplied fused battery positive voltage
from the instrument panel electrical center. The relay coils use separate
ground circuits or control circuits connected to the seat adjuster switch.
When an adjuster switch is pressed the relay coil control circuit is closed
to ground and the relay is energized. There is one relay for each supply
circuit which provides power or ground used for adjuster motor operation.
When the relays are de-energized the supply circuits are closed to ground.
When one adjuster motor relay is energized voltage is supplied to the adjuster
motor and ground is provided through the de-energized relay. The direction
of the adjuster motor rotation is determined by which of the adjuster motor
relays are energized and de-energized.
