Patent ID: 7238065

Claim:
A method for function test of steering for a propeller drive ( 5 ) on a boat comprising a propeller drive ( 5 ) suspended in a housing ( 6 a , 6 b ) that can rotate, a servo motor ( 26 ) which is arranged to rotate said rotating housing ( 6 a , 6 b ), a position sensor ( 33 , 34 ) arranged in association with the servo motor ( 26 ) which is arranged to detect an angular position of said rotating housing, a control unit ( 31 ) which is arranged to control the servo motor ( 26 ) in response to an input signal from a control device ( 30 ) corresponding to a required position and an input signal from said position sensor ( 33 , 34 ) corresponding to an actual position, where the method comprises the following method steps: during said function test, the control unit ( 31 ) generates a required position, without an input signal corresponding to a movement to said required position being generated from the control device (S 10 ); the control unit activates the servo motor to rotate the housing to said required position (S 20 ); the control unit records the input signal from the position sensor in order to verify that the housing assumes said required position (S 30 ); and the control unit records that steering of the propeller drive is working if the required position is assumed and the control unit records that steering of the propeller drive is not working if the required position is not assumed (S 40 ).