Chapter 3 Automotive Test
67
Use the ATO oscilloscope to test the FlexRay bus, the specific operation is shown in Figure 3-48:
Figure 3-48: FlexRay bus test
3.5.4
K line
The K line is a special line for data transmission between the car control unit and the diagnostic instrument, and
the transmission rate is low. In general, K-Line is very different from CAN Bus and most communication
networks. For example, the CAN Bus network does not have a central or master ECM: all ECMs are equal
because they can send and receive information along the network. The K line has only one line, and the
information is transmitted in binary format and the pulse voltage signal is transmitted. Divided into 0 and 1, 0 is
high level, 12V or above, 1 is low level, voltage is 0V.
Use the ATO oscilloscope to test the K line, the specific operation is shown in Figure 3-49 below:
Summary of Contents for ATO1000 Series
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Page 52: ...Chapter 3 Automotive Test 49 Figure 3 30 Electronic fuel pump test ...
Page 71: ...68 Figure 3 49 K line test ...
Page 79: ...76 Figure 3 57 Mazda 6 Cylinder internal pressure measurement ...
