Figure 3.5.4 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. Freeze Frame Figure 3.6.1 EN | 23