2.2 Conditions Name Definition Structure Where Defined Description Design Attributes DEFOG_DRIVE_SIG Variable Single REAR_DEFOG_SS Logical output to turn on/off rear defog relay. Tbd RDEFOG_LED Variable Single REAR_DEFOG_SS Output from the Rear Defog Subsystem to the HVAC Subsystem to request illumination of the Rear Defog On LED. Tbd RDEFOG_ON_STATUS Variable Single REAR_DEFOG_FEATURES Indicates if the rear defog is on or off based on operator requests and vehicle speed and timing constraints. Tbd