Abstract: An optical sensor system (20) has an optical detector (28) with an active detector area (38) and a detector output signal (40). A test-signal optical source (44) has a controllable optical source (48) having an output of a wavelength detectable by the optical detector (28), and a test-signal director (50) that directs the output of the optical source (48) to the active detector area (38) of the optical detector (28). A housing (22) encloses the optical detector (28) and the test-signal optical source (44). A test instrumentation controller (52) controls the operation of the optical source (48), and receives the detector output signal (40) for evaluation.

Abstract: Apparatus are provided for an electronic throttle control (ETC) system having a throttle body assembly. The apparatus includes a throttle actuator, an input circuit receiving sensor signals and having first, second, and third reference voltages, a first throttle position sensor (TPS) connected to the second reference voltage, a second TPS connected to the second reference voltage, a manifold absolute pressure (MAP) sensor connected to the first reference voltage, a manifold airflow (MAF) sensor connected to the third reference voltage, and a processor connected to the input circuit and transmitting a control signal to the throttle actuator based on the sensors, reference voltages, and returns. The ETC system has improved remedial actions responsive to failures of the various sensors, reference voltages, and returns.

Abstract: The invention relates to a dye bleach preparation which contains in addition to an acid, a water-soluble iodide and optionally a dye bleach catalyst at least one bifunctional sulphur compound having a sufficient solubility in the preparation and a low vapor pressure and containing at least one HS-group and at least one oxygen, nitrogen, phosphorus or additional sulphur atom, the sulphur atom of each HS-group being separated from the next oxygen, sulphur, nitrogen and phosphorus atom present in the molecule by at least three carbon atoms.The subject of the present invention is a dye bleach preparation for the photographic silver dye bleach process, which contains an acid, a water-soluble iodide and optionally a dye bleach catalyst. The preparation is characterised in that it contains at least one organic, at least bifunctional sulphur compound of which the solubility is at least 5.times.10.sup.-.sup.4 mol per liter of preparation and of which the vapour pressure in the temperature range of -20.degree.