Historical
ISO 14230-1:1999
Road vehicles -- Diagnostic systems -- Keyword protocol 2000 -- Part 1: Physical layer
This part of ISO 14230 describes the physical layer, based on ISO 9141, on which the diagnostic services will be implemented. It is based on the physical layer described in ISO 9141-2, but expanded to allow for road vehicles with either 12 V or 24 V voltage supply.
International Organization for Standardization [iso]