Priority of freeze frame data:

ECM has 4 frames where the freeze frame data can be stored. The first frame stores the freeze frame data of the malfunction which was detected first. However, the freeze frame data stored in this frame is updated according to the priority described. (If malfunction as described in the upper square "1" is detected while the freeze frame data in the lower square "2" has been stored, the freeze frame data "2" will be updated by the freeze frame data "1")

Fig 1: Priority Of Freeze Frame Data Table

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In the 2nd through the 4th frames, the freeze frame data of each malfunction is stored in the order as the malfunction is detected.

In case freeze frame data for a pending DTC are stored, when no malfunction is detected in the next driving cycle and the ignition switch is turned to OFF, the freeze frame data are cleared.

Shown in the table are examples of how freeze frame data are stored when two or more malfunctions are detected.

Fig 2: Identifying Stored Freeze Frame Data (When two or more malfunctions are detected)

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