For more information; see general functional description of the power supply:
Function selection -> Complete vehicle -> Body -> Power supply
In the event of a fault, the relay terminal 30g-f switches the connected consumer units off.
The relay terminal 30g-f is a bi-stable relay and is fitted on the rear board of the distribution box. The relay is activated by the junction box electronics (JBE).
The bi-stable relay has two relay coils that open or close the relay contact on activation. The relay persists in the last activated position (contact open or closed).
In the normal case, terminal 30g-f is always switched on.
With terminal R or terminal 15, terminal 30g-f is always switched on.