Topdon AL500B Manuel De L'utilisateur page 23

Figure 3.5.4
Freeze Frame
When the MIL is set to "ON", The Freeze Frame Data (See
Figure 3.6.1) that is present in the engine or emission-related
system is stored in computer memory for later retrieval. This
information shows the status of the fuel system (closed or
open loop), engine load, cooling water temperature, fuel
trim value, MAP vacuum, engine RPM, etc.
Figure 3.6.1
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