JPS63135254U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a self-diagnosis multifunctional tester according to the present invention, Fig. 2 is a perspective view showing the bottom of the tester, Fig. 3 is a block diagram showing the control circuit of the tester, and Fig. 4 is a perspective view of the tester. A flowchart showing the operation of the tester when the connector of the tester is connected to the connector of the vehicle. Fig. 5 shows the format of the R-232c code. Fig. 6 shows the data transfer between the tester and the ECU. Figure 7 is a flowchart showing data communication processing on the ECU side that performs data communication with the tester, Figure 8 is a flowchart showing processing on the tester side of the data communication processing, and Figure 9 is a flowchart showing the processing on the ECU side in forced drive of the actuator. Flowchart showing the process; Figure 10 is a flowchart showing the process on the tester side when the actuator is forced to drive; Figure 11 is a flowchart showing the process on the tester side when setting the communication data rate; Figure 12 is a flowchart showing the process on the tester side when setting the communication data rate. Flowchart showing the processing on the ECU side to detect the
Figure 4 is a diagram showing the means for setting the model and vehicle type.
Figure 5 is a flowchart showing the process on the tester side when erasing the diagnosis data on the ECU side.
Fig. 16 is a flowchart showing the processing on the ECU side when erasing the diagnosis data on the ECU side, Fig. 17 is a flowchart showing the processing on the tester side to perform multi-display, and Fig. 18 is a flowchart showing the processing on the tester side when erasing the diagnosis data on the ECU side. Diagram showing the connector for checking the signal,
Figure 19 is a diagram showing the location of the connector,
FIG. 0 is a circuit diagram that displays a conventional self-diagnosis signal. 31...Tester, 32...Display device, 37...
ROM, 42...Multiplexer, 43...CP
U, 46...Keyboard.

Amendment January 30, 1983 The brief description of the drawing is amended as follows. On page 23, line 20 of the specification, "R-232c code" is corrected to "RS-232c code."

Claims (1)

[Scope of utility model registration request] The first to nth signal lines taken out for each electronic control device to which self-diagnosis output signals or various data output from the n electronic control devices mounted on the vehicle are transferred, and the logic of either one at any time. In a vehicle having a first type centralized connector connected to a switching signal line output from each electronic control device outputting a level, a second type centralized connector connectable to the first type centralized connector, and a second type centralized connector connectable to the first type centralized connector; a setting circuit for setting the logic level of the signal line to the logic level of the other signal line; a selection circuit for selecting the signal via the first to nth signal lines; and a selection circuit for selecting the signal via the first to nth signal lines. A tester comprising a serial/parallel converter circuit that performs serial/parallel conversion, a transmitter/receiver circuit that transmits and receives signals via the first to nth signal lines, and control means that controls data transmission and reception via the transmitter/receiver circuit. A multifunctional tester for self-diagnosis, characterized in that the tester is equipped with means for selecting a transfer rate suitable for the electronic control device selected by the selection circuit and transmitting and receiving data with the electronic control device.