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Function in vehicle with air conditioning
The pump starts via radiator fan control unit
J293 when the ignition is turned “On“. A timer
module integrated in the control unit J293
ensures that the pump V51 runs on for
approx. 10 min after the ignition has been
switched off.
In vehicles without air conditioning, these
functions are implemented by means of a
timer relay.
Coolant afterrun pump V51
To counteract the thermal loads, and in parti-
cular at the exhaust gas turbocharger, the
pump V51 starts up when the ignition is tur-
ned “On“.
SSP207/38
The coolant afterrun pump V51 is atta-
ched to the radiator fan housing.