Display Of Engine Freeze Frame Data
NOTE:
- ECM captures the freeze frame data every 0.5 seconds and always keeps the latest three cords. Time-series freeze frame data includes the latest three freeze frame data and the freeze frame data when the DTC is detected.
- In the time-series freeze frame data, the following freeze frame data are displayed: «Detect», «History1», «History2», and «History3».
- Time lag between the freeze frame data of «Detect» and the freeze frame data of «History1» changes within the range of 0 - 0.5 seconds. This is because the freeze frame data of «Detect» is recorded when the DTC is actually detected, while the freeze frame data of «History1» is updated every 0.5 seconds.
- When more than one DTCs are recorded, the time-series freeze frame data is recorded only for the first-detected DTC, and for the next DTC, just the freeze frame data of «Detect» is recorded. And for the subsequent DTCs, no freeze frame data is recorded.
- When performing diagnosis, you can utilize the time-series freeze frame data to guess the vehicle status when the DTC was detected.
- For detailed operation procedures, refer to "PC application help for Subaru Select Monitor".
- A list of the support data is shown in the following table.
| Content | Item | Unit |
|---|---|---|
| Total number of ignition switch ON | IGN Counter | times |
| Count | Count | - |
| Elapsed time after ignition switch ON | past time after IG on | ms |
| Air fuel ratio control system for bank 1 | Fuel system for Bank 1 | - |
| Oxygen sensor (bank 1 sensor 2) | Oxygen sensor #12 | V |
| A/F correction (bank 1 sensor 2) | Short term fuel trim #12 | % |
| Front oxygen (A/F) sensor (bank 1 sensor 1) | Oxygen sensor #11 | - |
| Rear oxygen sensor (bank 1 sensor 2) | Oxygen sensor #12 | - |
| Neutral condition | AT drive status | - |
| Engine load data | Calculated load value | % |
| Engine coolant temperature | Coolant Temp. | °C or °F |
| Short term fuel trim by front oxygen (A/F) sensor (bank 1) | Short term fuel trim B1 | % |
| Long term fuel trim by front oxygen (A/F) sensor (bank 1) | Long term fuel trim B1 | % |
| Intake manifold absolute pressure | Mani. Absolute Pressure | kPa, mmHg, inHg or psig |
| Engine speed | Engine Speed | RPM |
| Vehicle speed | Vehicle Speed | km/h or MPH |
| #1 Cylinder ignition timing | Ignition timing adv. #1 | ° |
| Amount of intake air | Mass Air Flow | g/s or lb/m |
| Throttle valve angle | Throttle Opening Angle | % |
| On-board diagnostic system | OBD System | - |
| Elapsed time after engine start | Time Since Engine Start | sec |
| Fuel pressure | Fuel pressure gauge | kPa, mmHg, inHg or psig |
| Target EGR | Commanded EGR | % |
| EGR deviation | EGR Error | % |
| Evaporative purge | Evap Purge | % |
| Remaining fuel level | Fuel Level | % |
| Atmospheric pressure | Atmospheric pressure | kPa, mmHg, inHg or psig |
| ECM power supply voltage | ECU ACC | V |
| Absolute load | Absolute Load Value | % |
| A/F target lambda | Target Equivalence Ratio | - |
| Relative throttle opening angle | Relative Throttle Pos. | % |
| Ambient temperature | Ambient Temperature | °C or °F |
| Absolute throttle opening angle 2 | Absolute Throttle Pos.#2 | % |
| Absolute accelerator opening angle 1 | Accelerator Pedal Pos.#1 | % |
| Absolute accelerator opening angle 2 | Accelerator Pedal Pos.#2 | % |
| Target throttle opening angle | Target Throttle Opening Angle | % |
| X mode | X Mode | - |
| SI drive mode | SI Drive mode(Display) | - |
| Actual throttle opening angle | Actual Throttle Opening Angle | deg |
| Target fuel pressure | Target Fuel pressure gauge | kPa, mmHg, inHg or psig |
| Intake air temperature signal (air flow sensor) | IAT Sensor #11 | °C |
| Intake air temperature sensor (manifold pressure sensor) | IAT Sensor #12 | °C |