Heated Glass Element Relay: Description and Operation

DESCRIPTION





The rear window defogger (EBL) relay (1) is a International Standards Organization (ISO) micro-relay. Relays conforming to the ISO specifications have common physical dimensions, current capacities, terminal functions and patterns (2). The ISO micro-relay terminal functions are the same as a conventional ISO relay. However, the ISO micro-relay terminal pattern (or footprint) is different, the current capacity is lower, and the physical dimensions are smaller than those of the conventional ISO relay. The EBL relay is a electromechanical device that switches battery current through a fuse in the power distribution center (PDC) to the rear window defogger grid. The EBL relay is energized when the relay coil is provided a ground path by the control circuitry within the A/C-heater control.

The EBL relay is located in the PDC in the engine compartment.