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AutoMaster Pro Manual_English_V3.0
2. Select the system you would like to test. When the scanner has established connection with the
vehicle, the Function Menu displays.
Figure 4-19 Sample Common menu screen
4.3 Diagnostic Function Selection
After a system is selected and the scanner establishes communication with the vehicle, the
Function Menu displays. The menu options may include:
Not all function options listed above are applicable to all vehicles. Available options may vary by
the year, model, and make of the test vehicle. A “The selected mode is not supported!” message
displays if the option is not applicable to the vehicle under test.
Read Codes menu lets you read trouble codes found in the control unit. Typical menu options
● Present/Permanent/Current Codes
Present/Permanent/Current codes stored in a control module are used to help identify the cause
of a trouble or troubles with a vehicle. These codes have occurred a specific number of times and
indicate a problem that requires repair.
Pending codes are also referred to as maturing codes that indicate intermittent faults. If the fault
does not occur within a certain number of drive cycles (depending on vehicle), the code clears
from memory. If a fault occurs a specific number of times, the code matures into a DTC and the
MIL illuminates or blinks.
History codes are also referred to as past codes that indicate intermittent DTCs that are not
Code history is number of engine starts since DTC(s) were first detected (to see if they are
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