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26
When the signal of the sensor is abnormal, the ECU will save the data at that moment of failure to form a freeze-
frame. It is usually used to analyze the reasons that may lead to car failures.
The living data items supported by vehicles of different brands are not the same, so the freeze frames displayed
when diagnosing vehicles of different brands may also be different. Some vehicles may not have the option of
a freeze-frame which means that the model does not support this function.
Take Renault Duster ii ph as an example, after selecting the system to enter the lower freeze frame menu,
the device will list all the fault codes under the system.
Users can click on a fault code, such as DF1068 to view the freeze frame recorded by the car when the fault
code occurs, including context when the fault appeared, and current context and additional data.
Figure 4-18 Sample of the Freeze frame for Renault Duster ii ph (Screen 1)
Figure 4-19 Sample of the Freeze frame for Renault Duster ii ph (Screen 2)
Context when fault appeared: record the live data when fault appeared to help the user to know the vehicle
status. *Some vehicles don't support this function; users will get a prompt when they click the menu.
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