A control method of an auxiliary pump for automatic transmission of a vehicle which is equipped with a start-stop system

A control method for an auxiliary pump for an automatic transmission of a vehicle which is equipped with a start-stop system, the control method identifies performing a start-stop procedure (S10), detecting the current shift speed of the transmission (S20), and operating an auxiliary hydraulic pump according to a predetermined standard rotational speed according to the detected present transmission shift speed (S30, S40, S50). The control method can reduce electric power consumption and extend the battery life and improve the Kraftstoffverbrauchseffiziens.