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21
◼ Read ECU Information
This function is to read ECU version information, which is the equivalent of "System Identification" or "System
information” in some electronic control systems, which means to read ECU-related software and hardware
versions, models, and production date of diesel engine, part number, etc.
Figure 4-8 Sample of ECU Information
◼ Read Trouble Code
Read trouble codes that are stored in ECU. For the fault code, the diagnostic instrument will give specific
detailed definitions and explanations to help you locate and eliminate the car fault.
Figure 4-9 Sample of Reading DTC
In the process of Diagnostics, if the device shows “System is OK” or “No Trouble Code”, it means
there is no related trouble code stored in ECU or some troubles are not under the control of ECU, most
of these troubles are mechanical system troubles or executive circuit troubles, it is also possible that
signal of the sensor may bias within limits, which can be judged in Live Data.
◼ Clear Trouble Code
It allows clearing current and historical trouble codes memory in ECU, under the premise that all the troubles
are eliminated. There are two types of fault codes, one is a permanent fault code and the other is a non-
permanent fault code. The former requires manual troubleshooting of the car before it can be cleared with a
diagnostic tool. Non-permanent fault codes can be cleared directly with the diagnostic tool.
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