Circuit/System Description

The driver information center switch is a multiplexed switch which is integrated in the Turn Signal/ Multifunction Switch. The UP, DOWN and SET buttons are a series of momentary contact switches that connect a series of resistors in a resistor ladder format. The UP, DOWN and SET buttons utilize a 12 V signal and the instrument cluster determines which button is pressed by the voltage drop across the resistors when the button is pressed. The MENU switch is supplied 5 V and is pulled to ground when the switch is pressed.