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 below. (If malfunction as described in the upper square "1" below 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".)
PRIORITY OF FREEZE FRAME DATA
| Priority | Freeze frame data in frame 1 |
|---|---|
| 1 | Freeze frame data at initial detection of malfunction among "misfire detected" (P0300 - P0304), "fuel system too lean" (P0171, P2096) and "fuel system too rich" (P0172, P2097) |
| 2 | Freeze frame data when a malfunction other than those in "1" above is detected. |
In the 2nd through the 4th frames, the freeze frame data of each malfunction is stored in the order of detection. These data are not updated.
Shown in the table below are examples of how freeze frame data are stored when two or more DTCs are detected.
-: No freeze frame data