Because the CAN bus system using digital signal transmission, the method can not be used to treat the general maintenance of traditional automotive electrical, using multimeter to measure the voltage and the resistance to judge, and must use the original factory equipped with fault diagnosis instrument and associated ancillary devices, such as automobile special oscilloscope, the original car circuit diagram and fault code.Through the analysis of the fault code reading, in order to determine the fault location.
This instruction show you guide on how to use MUT-III diagnostic software to do CAN BUS diagnosis.
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Procedures:
When you execute CAN Bus diagnosis, halt the vehicle.
Click 
button after setting the vehicle information on the right of System Select screen.
Equipping System Setup
Put a check mark if the equipment is existence, and click
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