Autel Autolink AL539B Manual page 84

5. Start the engine and keep it running at 2000 rpm for over 15
seconds. Then press OK button and the scan tool will show as
below.
6. Follow the instructions to hold the engine rpm and turn on high
beams and blower motor. Then press OK button.
7. The scan tool starts to record the charging voltage with loads on.
There may be four test results.
Table 2: Charging System Decisions and Recommendations
Decision
NORMAL
Figure 8.10
Figure 8.11
The charging system is showing normal output.
No problem detected. (Figure 8.12)
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Action