Circuit/System Description

The driver information center (DIC) switch is a multiplexed momentary contact switch that also functions as a DIC/Dimmer switch. Battery power is provided to the DIC switch via the instrument panel cluster (IPC) with the DIC switch signal circuits pulled up to battery voltage in the IPC. The IPC also provides the DIC switch with a ground. The switch input to the cluster is pulled low or grounded when a switch is activated. The IPC determines the switch pressed by monitoring the signal circuit voltage.