en:k-line
K-Line
The K-Line is a bidirectional bus according to ISO 9141 and ISO 14230-1 in the automotive sector.
Data transmission via the K-Line can only be unidirectional at any one time. Only when a message is finished can it be sent in the other direction.
Example of communication with an engine control unit, 9600 bit/s:
The quiescent level is approx. 12.7V (on-board voltage), for communication the connected diagnostic system pulls the K-Line to ground:
en/k-line.txt · Last modified: 2023/02/04 22:04 by obd_diagnose
