Display Of Engine Freeze Frame Data
NOTE:
- ECM updates the freeze frame data every 0.5 seconds, and always keeps the last three records. Time-series freeze frame data includes the last 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.
| Display | Contents | Note (at idling) | Remarks |
|---|---|---|---|
| Engine Speed | Calculated from crankshaft position sensor signal. | 675 rpm | rpm |
| Mass Air Flow | Amount of intake air calculated from air flow sensor output value. | 2.5 g/s | g/s or lb/m |
| Vehicle speed | Value calculated from vehicle speed sensor output value. | 0 km/h | km/h or MPH |
| Throttle Opening Angle | Throttle opening angle in percentage. Calculated from throttle position sensor output value. |
13% | % |
| Ignition timing adv. #1 | Ignition timing control value for No. 1 cylinder. Calculated from rotation speed, intake manifold pressure, intake air temperature, water temperature, and data from knock sensor etc. |
15.5° | ° |
| Coolant Temp. | Value calculated from engine coolant temperature sensor output value. | 96°C | °C or °F |
| Short term fuel trim B1 | Air fuel ratio correction control value for the RH bank front side. | 0.8% | % |
| Short term fuel trim B2 | Air fuel ratio correction control value for the LH bank front side. | 0.0% | % |
| Long term fuel trim B1 | Air fuel ratio learning control value for the RH bank front side. | 1.6% | % |
| Long term fuel trim B2 | Air fuel ratio learning control value for the LH bank front side. | 0.0% | % |
| Mani. Absolute Pressure | Value after subtracting atmospheric pressure from intake manifold absolute pressure. [(Intake manifold absolute pressure) - (atmospheric pressure)] |
32 kPa | kPa, mmHg, inHg or psig |
| Oxygen sensor #12 | Rear oxygen sensor output voltage value on the RH side. | 0.7 V | V |
| Oxygen sensor #22 | Rear oxygen sensor output voltage value on the LH side. | 0.795 V | V |
| VVT Adv. Ang. Amount R | Intake AVCS advance angle amount. (Bank 1) | 0 deg | deg |
| VVT Advance Target Angle Amount R | AVCS target advance angle amount for the RH bank on the intake side. This value is compared with the AVCS advance angle amount R to judge if the intake AVCS is operating properly. Response delays during the transition time. |
0 deg | deg |
| VVT Adv. Ang. Amount L | Intake AVCS advance angle amount. (Bank 2) | 0 deg | deg |
| VVT Advance Target Angle Amount L | AVCS target advance angle amount for the LH bank on the intake side. This value is compared with the AVCS advance angle amount L to judge if the intake AVCS is operating properly. Response delays during the transition time. |
0 deg | deg |
| Exh. VVT Retard Ang. R | AVCS actual retard angle amount for the RH bank on the exhaust side. | 0 deg | deg |
| Ex VVT Retard Target Angle R | AVCS target retard angle amount for the RH bank on the exhaust side. This value is compared with the exhaust AVCS retard angle amount R to judge if the AVCS is operating properly. Response delays during the transition time. |
0 deg | deg |
| Exh. VVT Retard Ang. L | AVCS actual retard angle amount for the RH bank on the exhaust side. | 0 deg | deg |
| Ex VVT Retard Target Angle L | AVCS target retard angle amount for the LH bank on the exhaust side. This value is compared with the exhaust AVCS retard angle amount L to judge if the AVCS is operating properly. Response delays during the transition time. |
0 deg | deg |
| ECU ACC | ECM input power supply voltage. | 14.176 V | V |
| Target Equivalence Ratio | Target air fuel ratio. (Lambda) It usually becomes 1.0 aiming at a theoretical air fuel ratio. |
0.996 | - |
| Intake Air Temp. | Intake air temperature calculated from the intake air temperature sensor output value. | 50°C | °C or °F |
| Ambient Temperature | Ambient temperature that ECM estimates by input values from the engine coolant temperature sensor or the intake air temperature sensor etc. | Ambient Temp for A/C | °C or °F |
| Calculated load value | Current rate of air amount. Value assuming that the air amount at the current engine speed with the throttle fully open is 100%. |
15.3% | % |
| Absolute Load Value | Percentage of current intake air amount against the maximum air intake amount of the engine. For non-turbo engine, the value can be close to 95%, but will never be 100%. For turbo engine, this value may be close to 300% due to a boost pressure. |
14.9% | % |
| Atmospheric Pressure | Atmospheric pressure calculated from atmospheric pressure sensor output value. | 101 kPa | kPa, mmHg, inHg or psig |
| Actual Throttle Opening Angle | Actual throttle opening angle. Calculated by ECM based on the throttle sensor input value. |
16 deg | deg |
| Target Throttle Opening Angle | Control value of the target throttle opening angle calculated by ECM. Shows the target value of opening angle in percentage when 0% means fully closed and 100% means fully open. |
0.0% | % |
| Relative Throttle Pos. | Current throttle opening angle in percentage against the throttle voltage (full range) that has reflected the full close point learning value. The value will be approx. 70% at full open. |
1.6% | % |
| Idle Mass Air Flow | Air volume correction value to maintain the target rotation speed in each water temperature. Corrects air volume when the water temperature changes. It includes values of the feedback correction amount and the learning value. |
3.00 g/s | g/s |
| Idle Mass Air Flow Feedback correct | Air volume compensation value of ISC as a feedback correction to stabilize the idling speed. | 0.00 g/s | g/s |
| ISC Learning Value | Learning control value of ISC. After warming up, learning control is executed to reduce the ISC feedback correction to zero, in order to stabilize the engine speed. |
0.55 g/s | g/s |
| Idle A/C load correct | Air volume correction when the air conditioner is turned on. ECM corrects the air volume against the set target rotation speed when the air conditioner is turned ON. |
0.86 g/s | g/s |
| Electric Load Feedback Val | Air volume correction when an electric load is turned on. ECM corrects the air volume against the set target rotation speed when the electric load is turned ON. |
0.10 g/s | g/s |
| Idle dirty throttle correct | Calculates the ISC learning values on a long-term basis, and judges as an ISC dirty throttle correction when the learning value increases gradually. When carbon or other dirt accumulates on the ISC throttle and make the throttle dirty, air volume decreases when the throttle is fully closed. The ECM keeps the rotation speed so the amount of compensation air increases. |
0 g/s | g/s |
| Fuel Level | Fuel level sensor output value. ECM input value. Total value of main and sub. |
- | % |
| Fuel level resistance | Fuel level sensor resistance value. ECM input value. |
- | Ω |
| Fuel Pump Duty | Display of the fuel pump duty ratio. Supply voltage of the fuel pump is under a DUTY control by the ECM. This value shows the DUTY ratio. While the amount of fuel supply is small, such as when idling, the DUTY value is lowered to decrease the supply voltage. |
59 | % |
| EVAP Purge | Evaporative purge rate displayed by the OBD. | 0% | % |
| Purge Density Learn Value | Leaning value of the evaporation gas density purged from the canister. ECM displays the estimated leaning value. |
0.0% | % |
| EVAP Purge Flow | Purge ratio when the evaporation gas is purged from the canister. ECM performs a DUTY drive to the purge solenoid valve. The amount of gas actually purged will vary depending on the vacuum pressure difference before/after the solenoid valve. Purge ratio displayed here shows current purge amount in percentage against the maximum purge amount when the maximum vacuum pressure is applied. |
0.0% | % |
| Alternator control mode | Control mode of the electric power generation voltage by the alternator. Low: Mode focusing on fuel economy Mid: Mode focusing on fuel economy when the battery is charged and the current is being discharged (electric load is turned on) High: Normal mode ExHigh: Depending on the models, Exhigh mode is selected during deceleration. This mode focuses more on fuel economy. |
High/Mid/Low | - |
| Battery Terminal Voltage | Voltage value between battery terminals input from the battery sensor. | 14.0 V | V |
| Battery Charge/Discharge Current | Charge/discharge current value of the battery input from the battery sensor. When the value is positive: The current flows to a direction that the battery is charged. When the value is negative: The current flows to a direction that the battery is discharged. |
3.6 A | A |
| Estimated Battery Temperature | Battery temperature input from the battery sensor. | 45°C | °C |
| Remaining Battery Capacity | Remaining amount of battery estimated by ECM. | 89.0% | % |
| Fuel system for Bank 1 | Feedback status of air fuel ratio for the RH bank. Open: Feedback is stopped Closed: Feedback control is being performed |
Cl_normal | - |
| Fuel system for Bank 2 | Feedback status of air fuel ratio for the LH bank. Open: Feedback is stopped Closed: Feedback control is being performed |
Cl_normal | - |
| A/F Sensor #1 Resistance | Front A/F sensor resistance value calculated from the front A/F sensor output value on the RH bank. | 50 Ω | Ω |
| A/F Sensor #2 Resistance | Front A/F sensor resistance value calculated from the front A/F sensor output value on the LH bank. | 50 Ω | Ω |
| Commanded EGR | EGR setting value is calculated by ECM and the target value is displayed. | 0% | % |
| EGR Error | Displays a difference (%) between the target EGR steps and the actual EGR steps. When the value is positive, it opens more than the target value. When the value is negative, it does not reach to the target value. |
0% | % |
| Cylinder Monitor #1 | Calculates the rotation speed between certain angles on the #1 cylinder. If the rotation speed is low compared to monitor values of other cylinders, it means that the combustion is not ideal in that cylinder. |
- | rpm |
| Cylinder Monitor #2 | Calculates the rotation speed between certain angles on the #2 cylinder. If the rotation speed is low compared to monitor values of other cylinders, it means that the combustion is not ideal in that cylinder. |
- | rpm |
| Cylinder Monitor #3 | Calculates the rotation speed between certain angles on the #3 cylinder. If the rotation speed is low compared to monitor values of other cylinders, it means that the combustion is not ideal in that cylinder. |
- | rpm |
| Cylinder Monitor #4 | Calculates the rotation speed between certain angles on the #4 cylinder. If the rotation speed is low compared to monitor values of other cylinders, it means that the combustion is not ideal in that cylinder. |
- | rpm |
| Cylinder Monitor #5 | Calculates the rotation speed between certain angles on the #5 cylinder. If the rotation speed is low compared to monitor values of other cylinders, it means that the combustion is not ideal in that cylinder. |
- | rpm |
| Cylinder Monitor #6 | Calculates the rotation speed between certain angles on the #6 cylinder. If the rotation speed is low compared to monitor values of other cylinders, it means that the combustion is not ideal in that cylinder. |
- | rpm |
| Ignition SW ON Count | Time stamp information. Number of times the ignition is ON since the vehicle was manufactured. The number of the ignition ON time is also recorded when a trouble code is recorded, so the comparison with that number will show you how many times the ignition has turned on since the diagnostic code was recorded. |
- | times |
| Count | Time stamp information. Each unit individually counts the elapsed time since the ignition is turned ON. Master integrated unit and ECM synchronize with the master time. When synchronized: "Common" When not synchronized: "Originally" is displayed. |
Common | - |
| Time Count | Time stamp information. Elapsed time after ignition ON. When a trouble code is recorded, the elapsed time after ignition ON is also recorded. |
- | ms |
| Time Since Engine Start | Elapsed time after starting the engine. Displays the elapsed time after engine start based on the OBD regulations. |
- | sec |
| Initial Engine Oil Temp. | Oil temperature when starting the engine, which is input to ECM from the oil temperature sensor. | - | °C |
| Initial Engine Coolant Temp. | Water temperature when starting the engine, which is input to ECM from the water temperature sensor. | - | °C |
| Initial Intake Air Temp. | Intake air temperature when starting the engine, which is input to ECM from the intake air temperature sensor. | - | °C |
| Engine Starting Time | Time needed since the cranking started till the judgment of engine start is complete. | - | ms |
| Start Mask Control Check 1 | Information that shows whether the start prohibition control is executed on the engine side when starting. Values other than zero means that the control is executed to prohibit the engine start. |
- | - |
| IG OFF Elapsed Time | The time the vehicle has been left since the engine stopped. This value can be used to check how long the vehicle has left, by turning the ignition switch to ON after the engine stopped. |
- | sec |
| Fuel Cut Elps Time | Shows the elapsed time after experienced high rotation speed. | 0 sec | sec |
| AT drive status | Neutral condition. Information input from the inhibitor SW. |
NEUT | - |
| X Mode | Shows X mode ON or OFF status. | OFF | - |
| Stop light SW | Stop light switch signal. Set to ON when the stop light illuminates. ECM input value. |
OFF (when OFF) | - |
| Ignition switch | Ignition switch signal. Set to ON when the ignition switch is ON. |
ON | - |
| A/C Compressor Signal | A/C compressor drive signal. Set to "ON" when the drive signal is output. ECM output value. |
OFF (when OFF) | - |
| Compressor load torque value | Load value of the variable capacity air compressor that ECM inputs. The value that the air conditioner control module estimates and outputs. |
- | Nm |
| Starter SW | Starter switch signal. Set to ON when the starter is ON. ECM input value. |
OFF | - |
| AT turbine speed | Turbine rotation speed of the transmission. The turbine rotation speed is input from the transmission control module via CAN. |
900 | - |
| Lock Up Status | Lock-up status of the transmission. The lock-up status is input from the transmission control module via CAN. |
OPEN | - |
| P/N Signal | P/N status of the transmission. The P/N range status is input from the transmission control module via CAN. |
- | - |
| (Oxygen sensor #11) | Installation status of the front oxygen sensor for RH bank. | Support | - |
| (Oxygen sensor #12) | Installation status of the rear oxygen sensor for RH bank. | Support | - |
| (Oxygen sensor #21) | Installation status of the front oxygen sensor for LH bank. | Support | - |
| (Oxygen sensor #22) | Installation status of the rear oxygen sensor for LH bank. | Support | - |
| Short term fuel trim #12 | Air fuel ratio correction control value for the RH bank rear side. | 0.0% | % |
| Short term fuel trim #22 | Air fuel ratio correction control value for the LH bank rear side. | 0.0% | % |
| Absolute Throttle Pos.#2 | Shows the sub throttle sensor voltage value in % against the full-range 5 V throttle sensor output voltage. | 30.6% | % |
| Accelerator Pedal Pos.#1 | Shows the main accelerator sensor voltage value in % against the full-range 5 V. | 13.3% | % |
| Accelerator Pedal Pos.#2 | Shows the sub accelerator sensor voltage value in % against the full-range 5 V. | 13.3% | % |
| OBD System | Shows the OBD regulation to be followed. This is an information recorded in the ECM, and it does not mean that the unit automatically judges the compliance to the OBD regulations. |
OBD/OBD2 | - |