Abstract: Disclosed is a method for diagnosing a speed/position sensor of an internal combustion engine, of the type including a toothed wheel, which rotates as one with a shaft, and a matter detector, which is arranged so as to be fixed opposite the toothed wheel and controls a base of a transistor. The method includes: detecting a short circuit between an output of the speed/position sensor and a power supply; and testing for excess current consumption by a power supply of the speed/position sensor when the transistor is activated. If the test is positive, the short circuit is identified between the power supply of the speed/position sensor and the output of the speed/position sensor. Alternatively, if the test is negative, the short circuit is identified between another power supply and the output of the speed/position sensor.

Abstract: A system for controlling a vehicle fitted with electrical controls, the control system includes a handgrip mounted on a shaft and fitted with a position sensor and with a return spring which is fixed by one end to the handgrip so as to generate a return moment that opposes the twisting of the handgrip. The system includes at least one actuator able to move a cam mounted on the shaft and able to: modify the preload of the return spring according to the position of the cam to which the other end of the return spring is fixed, and/or modify the travel of the handgrip by collaborating with an end stop of the handgrip, the end stop coming into contact with a cam at the end of the travel.

Abstract: A system for controlling a vehicle fitted with electrical controls, the control system includes a handgrip mounted on a shaft and fitted with a position sensor and with a return spring which is fixed by one end to the handgrip so as to generate a return moment that opposes the twisting of the handgrip. The system includes at least one actuator able to move a cam mounted on the shaft and able to: modify the preload of the return spring according to the position of the cam to which the other end of the return spring is fixed, and/or modify the travel of the handgrip by collaborating with an end stop of the handgrip, the end stop coming into contact with a cam at the end of the travel.

Abstract: An electrical power supply device for a logic unit (1), includes a control member (7) that can transmit a control voltage (6), a power relay (3), transmitting a power voltage (2) when it is controlled, an electronic stage (8) controlling the power relay (3) when the electronic stage (8) receives a control voltage (6, 22) from the control member (7) or from the logic unit (1), a voltage regulator (12) transmitting a power supply voltage (20) to the logic unit (1) when it receives the power voltage (2) from the power relay (3) and a control voltage (6, 23) and a wake-up element (17) capable of transmitting an additional control voltage (24) to the voltage regulator (12) when the power relay (3) transmits the power voltage (2). The power supply is applicable to motor vehicle computers and to the detection of failure of the relay stage (3, 8).

Abstract: An electrical power supply device for a logic unit (1), includes a control member (7) that can transmit a control voltage (6), a power relay (3), transmitting a power voltage (2) when it is controlled, an electronic stage (8) controlling the power relay (3) when the electronic stage (8) receives a control voltage (6, 22) from the control member (7) or from the logic unit (1), a voltage regulator (12) transmitting a power supply voltage (20) to the logic unit (1) when it receives the power voltage (2) from the power relay (3) and a control voltage (6, 23) and a wake-up element (17) capable of transmitting an additional control voltage (24) to the voltage regulator (12) when the power relay (3) transmits the power voltage (2). The power supply is applicable to motor vehicle computers and to the detection of failure of the relay stage (3, 8).