Diagnostic system for an LED lamp for a motor vehicle
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United States of America Patent
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-
Dec 3, 2002
Grant Date -
N/A
app pub date -
Nov 5, 1999
filing date -
Nov 13, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A diagnostic system of an LED lamp system for a motor vehicle has a light control module for controlling an LED lamp via a supply wire and in case of malfunction, the LED lamp sends a diagnostic signal via the supply wire to the light control module. Additionally, the LED lamp, in case of malfunction, modulates a received current with a switchable current sink, whereby the light control module receives coded diagnostic information via the supply wire.
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