Power Windows: Operation

Power is supplied via auxiliary controlled load relay contacts from main battery supply through a thermal circuit breaker. The auxiliary controlled load relay is energized when ignition switch is closed and this energizes circuit to window lift motor.

When a control switch is operated to lower a window, current flows via contacts within switch to the motor (circuit to ground is also via the switch).

When switch is operated to raise the window, current flows in the opposite direction through the switch and motor.