Patent ID: 6849027
Filing Date: 2005-02-01
Classification: B60W,F16D,Y02T,Y10S,Y10T

Abstract:
1. A method of diagnosing a malfunction of a clutch of a motor vehicle with an automatically shifting transmission, comprising the steps of: a) by means of a first sensor, generating a first electrical signal, which indicates if the motor vehicle is standing still; b) by means of a second sensor, generating a second electrical signal, which indicates if a gear in the automatically shifting transmission cannot be synchronized within a prescribed time interval; c) by means of a third sensor, generating a third electrical signal, which indicates if an engine of the motor vehicle is running; and d) evaluating the first, second and third electrical signals in a logic AND-member which sets an error flag indicating a malfunction in a clutch-actuator associated with the clutch if all three signals are affirmative.