The relay
T6 in the engine compartment
unit B1 manages the switching on of the fan: the coil is supplied
by the ignition-controlled line (15/54), while the power line is
protected by the fuse F6 of the engine compartment junction unit
B1.
It is energized by a control signal - earth - coming from
the engine control unit
M10.
If the engine coolant reaches a certain
temperature level, the control unit
M10 sends a signal - from
pin 14 of connector A - which energizes the fan relay T6 which then
sends the supply to the fan N11.