Radiator fan relay unit (706b) with one radiator fan, E39

/ 9-3 (9440) / 2012 / 2. Engine / 4-cyl petrol/E85 / Cooling system / Technical description / Radiator fan relay unit (706b) with one radiator fan, E39

Location

Radiator fan relay unit (706)

Main purpose

To control the radiator fans.

Type

The relay box contains relays and resistors.

Connection

706b pin no.	Signal type	Description
5	BATT+	Supplied power from maxi fuse 35 to pin 6.
2	ground	Grounded in grounding point G30A via crimp connector J1.
1, 4 and 7	ground	Grounded by the SCM (587). The pin is grounded differently depending on the fan speed.

Power supply and control

Generation 1

Generation 2