User's Manual

G-scan2 User Manual

This function helps the user figure out whether the vehicle’s electronic control units

communicate with the other control units properly or not by indicating the status of the

communication signal by illuminating ON-OFF lamps by sensing the change of the voltage level

of the communication signal pins of the diagnostic socket.

5 types of communication protocols including High Speed CAN-bus, Middle Speed CAN-bus,

Low Speed Can-bus, Single CAN-bus and SAE J1850 (PWM) are supported by this test

function.

The same procedure is applied for all the protocols. Therefore refer to the following example

based on testing the High-speed CAN-Bus system, and consider the same procedure when

testing the other communication protocols.

A. Check the ‘Notice’ pop-up and select “OK” to continue.

As instructed, make sure to turn the IG key to ON position.

Caution

This function works based on the standard communication line assignment.

However, sometimes the communication lines may be assigned to the different pins of

OBD2/EBOD adapter for different cars according to the non-standard design by the car

manufacturers.

Please refer to the circuit diagram of the test vehicle and check the correct communication

lines if the function fails due to no signal input. If the communication lines are found assigned