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Home >> Toyota >> 2012 >> Sienna SE >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (1AR-FE) (Diagnostics - Introduction) >> SFI System >> Freeze Frame Data >> Freeze Frame Data
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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.

      HINT: 

      If it is impossible to duplicate the problem even though a DTC is output, check the freeze frame data.

    • The ECM records engine conditions in the form of freeze frame data every 0.5 seconds. Using the Techstream, 5 separate sets of freeze frame data can be checked.
      Fig 1: Identifying Freeze Frame Data
      GTY193408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • 3 data sets from before the DTC was stored
      • 1 data set from when the DTC was stored
      • 1 data set from after the DTC was stored
      • These data sets can be used to simulate the condition of the vehicle from 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 
    Techstream Display Measurement Item Diagnostic Note
    Vehicle Speed Vehicle speed The speed indicated on the speedometer.
    Engine Speed Engine speed -
    Calculate Load Calculated load The load calculated by the ECM.
    Vehicle Load Vehicle load The load percentage in terms of the maximum intake air flow amount.
    MAF Air flow rate from mass air flow meter If the value is approximately 0.0 gm/sec.:
    • The mass air flow meter power source circuit is open.
    • The VG circuit is open or shorted.

    If 271.0 gm/sec. or more:
    • The E2G circuit is open.
    Atmosphere Pressure Atmospheric pressure -
    Coolant Temp Engine coolant temperature If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit may be open or shorted.
    Intake Air Intake air temperature If the value is -40°C (-40°F), or higher than 128°C (262°F), the sensor circuit is open or shorted.
    Engine Run Time Accumulated engine running time -
    Initial Engine Coolant Temp Engine coolant temperature at engine start -
    Initial Intake Air Temp Initial intake air temperature -
    Battery Voltage Battery voltage -
    Accel Sens. No. 1 Volt % Absolute accelerator pedal position No. 1 -
    Accel Sens. No. 2 Volt % Absolute accelerator pedal position No. 2 -
    Throttle Sensor Volt % Absolute throttle position sensor -
    Throttl Sensor #2 Volt % Absolute throttle position sensor #2 -
    Throttle Sensor Position Throttle sensor positioning -
    Throttle Motor DUTY Throttle actuator -
    Throttle position Throttle position Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    ISC Flow Flow rate calculated using information from each sensor Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    ISC Position Requested opening amount calculated using ISC control Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    ISC Feedback Value ISC feedback compensation amount Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    ISC Learning Value ISC learned compensation amount Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Electric Load Feedback Val Compensation flow rate according to electrical load Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Air Conditioner FB Val Compensation flow rate according to air conditioner load Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Low Revolution Control Compensation flow rate according to power steering load Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    N Range Status Shift lever N status Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Eng Stall Control FB Flow Intake air compensation flow rate Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Deposit Loss Flow Flow loss due to deposits Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Injector (Port) Fuel injector assembly -
    Injection Volum (Cylinder1) Injection volume -
    Fuel Pump/Speed Status Fuel pump/speed status -
    Vacuum Pump Leak detection pump ON: Operating
    TCV Status Tumble control valve status -
    EVAP (Purge) VSV EVAP (purge) VSV control duty The order signal from the ECM.
    Evap Purge Flow Purge flow -
    Purge Density Learn Value Learned value of purge density -
    EVAP System Vent Valve EVAP system vent valve ON: Closed
    EVAP Purge VSV EVAP purge VSV -
    Purge Cut VSV Duty Purge cut VSV duty -
    Target Air-Fuel Ratio Target air fuel ratio -
    AF Lambda B1S1 Fuel trim at air fuel ratio sensor -
    AFS Voltage B1S1 Air fuel ratio sensor output 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 air fuel ratio sensor
    AFS Current B1S1 Air fuel ratio sensor current -
    A/F Heater Duty #1 Air fuel ratio sensor heater duty ratio -
    O2S B1S2 Heated oxygen sensor output 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 heated oxygen sensor
    O2S Impedance B1S2 Heated oxygen sensor impedance -
    O2 Heater B1S2 Heated oxygen sensor heater -
    O2 Heater Curr Val B1S2 Heated oxygen sensor current -
    Short FT #1 Short-term fuel trim Short-term fuel compensation used to maintain air fuel ratio at stoichiometric air fuel ratio
    Long FT #1 Long-term fuel trim 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 -
    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 air fuel ratio 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 air fuel ratio sensor, used for fuel control, is malfunctioning
    IGN Advance Ignition advance -
    Knock Feedback Value Knock feedback value -
    Knock Correct Learn Value Learned knocking correction value -
    Idle Spark Advn Ctrl #1 Individual cylinder timing advance compensation amount (No. 1) Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Idle Spark Advn Ctrl #2 Individual cylinder timing advance compensation amount (No. 2) Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Idle Spark Advn Ctrl #3 Individual cylinder timing advance compensation amount (No. 3) Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Idle Spark Advn Ctrl #4 Individual cylinder timing advance compensation amount (No. 4) Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    ACIS VSV Intake air control valve assembly for acoustic control induction system -
    AICV VSV Vacuum switching valve for air intake control system -
    IAC Sensor Voltage Intake air control valve position sensor output voltage -
    Intake Air Control Position Intake air control valve position -
    VVT Control Status #1 VVT control status (bank 1) -
    VVT Advance Fail VVT control failure status -
    Catalyst Temp B1S1 Estimated catalyst temperature -
    Catalyst Temp B1S2 Estimated catalyst temperature -
    Starter Signal Starter signal -
    Power Steering Signal Power steering signal -
    Neutral Position SW Signal Park/neutral position switch assembly signal -
    Stop Light Switch Stop light switch assembly -
    A/C Signal A/C Signal -
    Idle Up Signal Idle Up Signal -
    Closed Throttle Position SW Closed throttle position switch -
    Fuel Cut Condition Fuel cut condition ON or OFF -
    Immobiliser Communication Immobiliser communication ON or OFF OFF: Communication malfunctioning, or engine immobiliser system set
    TC Terminal TC terminal status -
    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 -
    Dist Batt Cable Disconnect Accumulated distance from battery cable disconnected -
    IG OFF Elapsed Time Cumulative time after ignition switch off -
    TC and TE1 TC and TE1 terminals of DLC3 -
    Ignition Trig. Count Ignition count -
    Cylinder #1 Misfire Count Cylinder #1 misfire count -
    Cylinder #2 Misfire Count Cylinder #2 misfire count -
    Cylinder #3 Misfire Count Cylinder #3 misfire count -
    Cylinder #4 Misfire Count Cylinder #4 misfire count -
    All Cylinders Misfire Count All cylinder misfire count -
    Misfire RPM Misfire RPM -
    Misfire Load Misfired load -
    Misfire Margin Misfire monitoring -
    Catalyst OT MF F/C Catalyst over temperature misfire prevention F/C -
    Cat OT MF F/C History Catalyst over temperature misfire prevention F/C history -
    Cat OT MF F/C Cylinder#1 Catalyst over temperature misfire prevention #1 -
    Cat OT MF F/C Cylinder#2 Catalyst over temperature misfire prevention #2 -
    Cat OT MF F/C Cylinder#3 Catalyst over temperature misfire prevention #3 -
    Cat OT MF F/C Cylinder#4 Catalyst over temperature misfire prevention #4 -
    Engine Speed (Starter Off) Engine speed when starter off. Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Starter Count Number of times starter turned on after ignition switch turned to ON Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Run Dist of Previous Trip Distance driven during previous trip Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Engine Starting Time Time elapsed after engine started (interval between ignition switch ON and off) Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Previous Trip Coolant Temp Engine coolant temperature during previous trip Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Previous Trip Intake Temp Intake air temperature during previous trip Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Engine Oil Temperature Engine oil temperature (estimated temperature) Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Previous Trip Eng Oil Temp Engine oil temperature during previous trip Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Ambient Temp for A/C Ambient temperature Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Previous Trip Ambient Temp Ambient temperature during previous trip Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Engine Start Hesitation History of hesitation during engine start Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Low Rev for Eng Start History of low engine speed after engine start Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Minimum Engine Speed Minimum engine speed Reference:
    Check the value when engine stalls, is difficult to start, or idles roughly.
    Tumble C.V Duty Ratio Intake air control valve (for tumble control) duty ratio -
    Electric Fan Motor Electric fan motor (Cooling fan motor) -
    Idle Fuel Cut Idle fuel cut ON: when throttle valve fully closed and engine speed more than 2800 RPM
    FC TAU Fuel cut during very light load Fuel cut being performed under very light load to prevent incomplete engine combustion
    Immobiliser Fuel Cut Status of the immobiliser fuel cut -
    Brake Ejector VSV VSV for brake ejector system -
    Communication with ECT Status of the communication with ECT -
    Electrical Load Signal 1 Electrical load signal -
    Electrical Load Signal 3 Electrical load signal -
    Received MIL from ECT MIL status from ECT -
    Shift Position Sig from ECT Shift position signal from ECT -
    A/T Oil Temp from ECT ATF temperature sensor value from ECT -
    SPD (NO) Output shaft speed -
    SPD (NT) Input turbine speed Data is displayed in increments of 50 RPM
    ECT Lock Up ECT lock up status -
    Shift SW Status (P Range) Park/neutral position switch status -
    Shift SW Status (R Range) Park/neutral position switch status -
    Shift SW Status (N Range) Park/neutral position switch status -
    Sports Shift Up SW Sport shift up switch status -
    Sports Shift Down SW Sport shift down switch status -
    Sports Mode Selection SW Sport mode select switch status -
    Shift SW Status (D Range) Park/neutral position switch status -
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