SFI SYSTEM FREEZE FRAME DATA


  1. DESCRIPTION


    • The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

      Tech Tips

      If it is impossible to replicate the problem even though a DTC is detected, confirm the freeze frame data.


    • A000WJYE01
      *1 DTC was set.
      *2 0.5 seconds
      *3 Freeze frame data which can be read

      The ECM records engine conditions in the form of freeze frame data every 0.5 seconds. Using the GTS, five separate sets of freeze frame data, including the data values at the time when the DTC was set, can be checked.


      • 3 data sets before the DTC was set.

      • 1 data set when the DTC was set.

      • 1 data set after the DTC was set.


      • These data sets can be used to simulate the condition of the vehicle around the time of the occurrence of the malfunction. The data may assist in identifying the cause of the malfunction, and in judging whether it was temporary or not.

  2. LIST OF FREEZE FRAME DATA

    LABEL

    (Tester Display)

    		 Measurement Item/Range Diagnostic Note
    Vehicle Speed Vehicle speed Speed indicated on speedometer
    Engine Speed Engine speed -
    Calculate Load Calculate load Calculated load by ECM
    Vehicle Load Vehicle load Load percentage in terms of maximum intake air flow amount
    MAF #1 Mass air flow volume (bank 1)

    If value approximately 0.0 gm/sec.:


    • Mass air flow meter power source circuit open or short


    • VG circuit open or short

    If value 160.0 gm/sec. or more:


    • E2G circuit open
    MAF #2 Mass air flow volume (bank 2)

    If value approximately 0.0 gm/sec.:


    • Mass air flow meter power source circuit open or short


    • VG2 circuit open or short

    If value 160.0 gm/sec. or more:


    • E2G2 circuit open
    MAF Sensor 1 Supported Status of the MAF Sensor 1 Supported -
    MAF Sensor 1 Mass air flow volume (bank 1)

    If value approximately 0.0 gm/sec.:


    • Mass air flow meter power source circuit open or shorted

    • VG circuit open or shorted

    If value 160.0 gm/sec. or more:


    • E2G circuit open
    MAF Sensor 2 Supported Status of the MAF Sensor 2 Supported -
    MAF Sensor 2 Mass air flow volume (bank 2)

    If value approximately 0.0 gm/sec.:


    • Mass air flow meter power source circuit open or shorted

    • VGR circuit open or shorted

    If value 160.0 gm/sec. or more:


    • EVGR circuit open
    Atmosphere Pressure Atmospheric pressure -
    Coolant Temp Engine coolant temperature

    If value -40°C (-40°F), sensor circuit open

    If value 140°C (258°F), sensor circuit shorted
    Intake Air #1 Intake air temperature (bank 1)

    If value -40°C (-40°F), sensor circuit open

    If value 140°C (258°F), sensor circuit shorted
    Intake Air Temp B1S1 Supported Status of the Intake Air Temp B1S1 Supported -
    Intake Air Temp B1S1 Intake air temperature (bank 1 sensor 1)

    If value -40°C (-40°F), sensor circuit open

    If value 140°C (258°F), sensor circuit shorted
    Intake Air Temp B1S2 Supported Status of the Intake Air Temp B1S2 Supported -
    Intake Air Temp B1S2 Intake air temperature (bank 1 sensor 2) -
    Intake Air Temp B1S3 Supported Status of the Intake Air Temp B1S3 Supported -
    Intake Air Temp B1S3 Intake air temperature (bank 1 sensor 3) -
    Intake Air #2 Intake air temperature (bank 2)

    If value -40°C (-40°F), sensor circuit open

    If value 140°C (258°F), sensor circuit shorted
    Intake Air Temp B2S1 Supported Status of the Intake Air Temp B2S1 Supported -
    Intake Air Temp B2S1 Intake air temperature (bank 2 sensor 1)

    If value -40°C (-40°F), sensor circuit open

    If value 140°C (258°F), sensor circuit shorted
    Intake Air Temp B2S2 Supported Status of the Intake Air Temp B2S2 Supported -
    Intake Air Temp B2S2 Intake air temperature (bank 2 sensor 2) -
    Intake Air Temp B2S3 Supported Status of the Intake Air Temp B2S3 Supported -
    Intake Air Temp B2S3 Intake air temperature (bank 2 sensor 3) -
    Engine Run Time Accumulated engine running time -
    Initial Engine Coolant Temp Initial engine coolant temperature -
    Initial Intake Air Temp Initial intake air temperature -
    Battery Voltage Battery voltage -
    Throttle Sensor Volt % Throttle sensor positioning -
    Throttle Sensor #2 Volt % Absolute throttle sensor positioning No. 2 -
    Throttle Sensor Position Absolute throttle position -
    Throttle Motor DUTY Throttle actuator -
    Fuel Press Fuel pressure -
    FPrs diff / Relief Vlv op Difference between fuel pressure before and after fuel relief valve operates -
    Injector (Port) Port injector -
    Injection Volum (Cylinder1) Injection volume -
    Fuel Pump Speed Control F/PMP relay status -
    Fuel Pump/Speed Status Fuel pump/speed status -
    Fuel Pump Duty (D4) Fuel pump duty (D4) -
    Fuel Pump2 Duty (D4) Fuel pump2 duty (D4) -
    High Pres FP Duty High Pres FP Duty -
    HP FP Discharge Rate High pressure fuel pump discharge rate (bank 1) -
    HP FP Discharge Rate 2 High pressure fuel pump discharge rate (bank 2) -
    Injection Way Injection mode -
    Injection Switching Status Prohibition of changing the D-4S injection method -
    Injection Timing (D4) Injection timing (D4) -
    Injection Time (D4) Injection time (D4) -
    EVAP (Purge) VSV Purge VSV duty ratio -
    Evap Purge Flow Purge flow -
    Purge Destiny Learn Value Learning value of purge density -
    Fuel Pressure Relief Valve Fuel relief valve status -
    EVAP Purge VSV Purge VSV VSV for EVAP controlled by ECM (ground side duty control)
    Target Air-Fuel Ratio Air-fuel ratio -
    AF Lambda B1S1 Fuel trim at A/F sensor (bank 1 sensor 1) -
    AF Lambda B2S1 Fuel trim at A/F sensor (bank 2 sensor 1) -
    AFS Voltage B1S1 A/F sensor (bank 1 sensor 1) output voltage Performing Control the Injection Volume or Control the Injection Volume for A/F sensor function of Active Test enables technician to check output voltage of sensor
    AFS Voltage B2S1 A/F sensor (bank 2 sensor 1) output voltage Performing Control the Injection Volume or Control the Injection Volume for A/F sensor function of Active Test enables technician to check output voltage of sensor
    AFS Current B1S1 A/F sensor (bank 1 sensor 1) output current Performing Control the Injection Volume or Control the Injection Volume for A/F sensor function of Active Test enables technician to check current output of sensor
    AFS Current B2S1 A/F sensor (bank 2 sensor 1) output current Performing Control the Injection Volume or Control the Injection Volume for A/F sensor function of Active Test enables technician to check current output of sensor
    O2S B1S2 Heated oxygen sensor (bank 1 sensor 2) output voltage Performing Control the Injection Volume or Control the Injection Volume for A/F sensor function of Active Test enables technician to check output voltage of sensor
    O2S B2S2 Heated oxygen sensor (bank 2 sensor 2) output voltage Performing Control the Injection Volume or Control the Injection Volume for A/F sensor function of Active Test enables technician to check output voltage of sensor
    Short FT #1 Short-term fuel trim (bank 1) Short-term fuel compensation used to maintain air-fuel ratio at stoichiometric air-fuel ratio
    Long FT #1 Long-term fuel trim (bank 1) Overall fuel compensation carried out in long-term to compensate a continual deviation of short-term fuel trim from central value
    Total FT #1 Total fuel trim (bank 1) -
    Short FT #2 Short-term fuel trim (bank 2) Short-term fuel compensation used to maintain air-fuel ratio at stoichiometric air-fuel ratio
    Long FT #2 Long-term fuel trim (bank 2) Overall fuel compensation carried out in long-term to compensate a continual deviation of short-term fuel trim from central value
    Total FT #2 Total fuel trim (bank 2) -
    Fuel System Status #1 Fuel system status (bank 1)

    • OL (Open Loop): Has not yet satisfied conditions to go closed loop


    • CL (Closed Loop): Using heated oxygen sensor as feedback for fuel control


    • OLDrive: Open loop due to driving conditions (fuel enrichment)


    • OLFault: Open loop due to detected system fault


    • CLFault: Closed loop, but heated oxygen sensor used for fuel control is malfunctioning
    Fuel System Status #2 Fuel system status (bank 2)

    • OL (Open Loop): Has not yet satisfied conditions to go closed loop


    • CL (Closed Loop): Using heated oxygen sensor as feedback for fuel control


    • OLDrive: Open loop due to driving conditions (fuel enrichment)


    • OLFault: Open loop due to detected system fault


    • CLFault: Closed loop, but heated oxygen sensor used for fuel control is malfunctioning
    IGN Advance Ignition advance -
    Knock Feedback Value Feedback value of knocking -
    Knock Correct Learn Value Correction learning value of knocking -
    ACIS Motor Duty Intake air control actuator duty -
    Catalyst Temp B1S1 Catalyst temperature (bank 1 sensor 1) -
    Catalyst Temp B2S1 Catalyst temperature (bank 2 sensor 1) -
    Catalyst Temp B1S2 Catalyst temperature (bank 1 sensor 2) -
    Catalyst Temp B2S2 Catalyst temperature (bank 2 sensor 2) -
    Closed Throttle Position SW Closed throttle position switch -
    Time After DTC Cleared Cumulative time after DTC cleared -
    Distance from DTC Cleared Accumulated distance after DTC cleared -
    Warmup Cycle Cleared DTC Warm-up cycle after DTC cleared -
    TC and TE1 TC and TE1 terminals of DLC3 -
    Ignition Trig. Count Ignition counter -
    Cylinder #1 Misfire Count No. 1 cylinder misfire count -
    Cylinder #2 Misfire Count No. 2 cylinder misfire count -
    Cylinder #3 Misfire Count No. 3 cylinder misfire count -
    Cylinder #4 Misfire Count No. 4 cylinder misfire count -
    Cylinder #5 Misfire Count No. 5 cylinder misfire count -
    Cylinder #6 Misfire Count No. 6 cylinder misfire count -
    Cylinder #7 Misfire Count No. 7 cylinder misfire count -
    Cylinder #8 Misfire Count No. 8 cylinder misfire count -
    All Cylinders Misfire Count Misfire count of all cylinders -
    Multi Cylinders Misfire Count Misfire count of multiple cylinders -
    Misfire RPM Average engine speed when misfire occurred -
    Misfire Load Average engine load when misfire occurred -
    Misfire Margin Margin to detect engine misfire -
    Electric Fan Motor Fan motor status -
    Idle Fuel Cut Idle fuel cut ON: When throttle valve fully closed and engine speed over 1500 rpm
    FC TAU FC TAU Fuel cut being performed under very light load to prevent engine combustion from becoming incomplete
    Requested Engine Torque Requested engine torque Flag information for hybrid vehicle
    HV Target Engine Speed HV target engine speed Flag information for hybrid vehicle
    Actual Engine Torque Actual engine torque Flag information for hybrid vehicle
    Estimated engine Torque Estimated engine torque Flag information for hybrid vehicle
    Engine Run Time Engine run time Flag information for hybrid vehicle
    Request Engine Run Time Request engine run time Flag information for hybrid vehicle
    Judge Time Engine Ignition Judgment time to complete explosion of ignition Flag information for hybrid vehicle
    Judge Time Engine Output Judgment time for time until engine output Flag information for hybrid vehicle
    Fuel Level Fuel level Flag information for hybrid vehicle
    ISC Learning ISC learning Flag information for hybrid vehicle
    F/C for Engine Stop Req Fuel cut for engine stop request Flag information for hybrid vehicle
    Engine Independent Engine independent operation Flag information for hybrid vehicle
    Racing Operation Racing operation Flag information for hybrid vehicle
    Request Warm-up Request engine warm-up Flag information for hybrid vehicle
    Engine Independent Control Engine independent control operation Flag information for hybrid vehicle
    ISC Learning Value ISC learning value Flag information for hybrid vehicle