Autel PowerScan PS100 - Manual (Page 17)

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may proceed with further activation. (Figure 14) If the green LED
went off at that instant or if the circuit breaker tripped, the tool has
been overloaded. This could happen for the following reasons:
 The contact you are probing is a direct positive voltage.
 The component you are testing is short-circuited.
 The component is a very high current component(i.e., starter
motor).
If the circuit breaker is tripped, reset it by waiting for it to cool down
(15 sec.) and then depressing the reset button.
Figure 14
WARNING : With this function, if you are contacting a protected
circuit, a vehicle’s fuse can be blown or tripped if you apply ground
to it.
3.8 Checking for Bad Ground Contacts
Probe the suspected ground wire or contact with the probe tip.