Patent ID: 8154837

Claim:
A circuit arrangement ( 2 , 3 , 4 , 5 ) in an electronic control device which is connected to at least one wheel speed sensor channel ( 6 , 7 , 8 , 9 ) transmitting wheel speed information, the arrangement comprising: at least one monitoring module (U 1 ,U 2 ,U 3 ,U 4 ) for the at least one wheel speed sensor channel ( 6 , 7 , 8 , 9 ), said at least one monitoring module (U 1 ,U 2 ,U 3 ,U 4 ) capable of monitoring an excess current fault on at least one wheel speed sensor channel ( 6 , 7 , 8 , 9 ), wherein the at least one monitoring module (U 1 ,U 2 ,U 3 ,U 4 ) detects an excess current fault, the corresponding wheel speed sensor channels ( 6 , 7 , 8 , 9 ) is blocked by a blocking circuit ( 10 , 11 , 12 , 13 ) of the circuit arrangement ( 2 , 3 , 4 , 5 ), or that the circuit arrangement ( 2 , 3 , 4 , 5 ) provides for blocking the corresponding wheel speed sensor channel(s) ( 6 , 7 , 8 , 9 ) from outside the circuit arrangement ( 2 , 3 , 4 , 5 ); wherein the circuit arrangement is connected to an electronic data processing unit (MCU) which, in particular from a structural point of view, is separated from the circuit arrangement ( 2 , 3 , 4 , 5 ) and is designed for executing programs; and wherein a transmission channel/a signal line of the status driver stage (St 1 ,St 2 ,St 3 ,St 4 ) and one status transmission channel/one status line of the electronic data processing unit (MCU) are connected to an evaluation circuit, in which case the evaluation circuit is realized in particular by an AND gate and is linked to at least one blocking circuit ( 10 , 11 , 12 , 13 ) for blocking the at least one wheel speed sensor channel ( 6 , 7 , 8 , 9 ).