VEHICLE DIAGNOSTICS APPARATUS AND METHOD
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Abstract
A motor vehicle diagnostics apparatus (110, 152) having a diagnostics unit connectable in-line in a motor vehicle control system between first and second components(171, 172), the apparatus (110, 152) being operable to detect by means of the diagnostics unit (110) one or more electrical signals generated by the first component (171) for application to the second component (172) and to provide an output in response to the detected signals.
23 Citations
51 Claims
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1-29. -29. (canceled)
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30. A motor vehicle diagnostics apparatus comprising:
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a diagnostics unit; first and second connector ports, the connector ports being used for connecting the diagnostics unit in line in a motor vehicle control system between first and second components of the control system; the apparatus being operable to detect by means of the diagnostics unit one or more electrical signals generated by the first component for application to the second component and to provide an output in response to the detected signals; and wherein the apparatus is operable to perform a test of at least one cable and/or connector connecting the first connector port to the second connector port by transmitting a signal from the first connector port to the second connector port via said at least one cable and/or connector, in use. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A method of diagnosing a fault associated with a motor vehicle using a diagnostics apparatus, the method comprising:
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performing a test of the apparatus comprising connecting a first connector port of a diagnostics unit of the apparatus to a second connector port of the diagnostics unit using at least one cable and/or connector and transmitting a signal from the first connector port for receipt at the second connector port; connecting the diagnostics unit, using said first and second connector ports and said at least one cable and/or connector, in-line in a motor vehicle control system between first and second components; detecting, using the diagnostics unit, one or more electrical signals generated by the first component for application to the second component; and providing an output corresponding to the detected signals. - View Dependent Claims (50)
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51. An apparatus for diagnosing a fault associated with a motor vehicle, the apparatus comprising a diagnostics unit connectable in-line to a motor vehicle control system comprising first and second components, the diagnostics unit being connectable in place of one of the first or second components, the apparatus being operable to perform a test of one of the first or second components whereby the component under test is disconnected from the motor vehicle control system and from the other component, and the component under test is connected to the diagnostics unit, wherein the diagnostics unit is operable to simulate one or more signals that may be generated by the other component and to transmit the simulated signals to the component under test.
Specification