СИСТЕМА SFI ДАННЫЕ ФИКСИРОВАННОГО НАБОРА ПАРАМЕТРОВ
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DESCRIPTION
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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 running or stopped, 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 duplicate the problem even though a DTC is detected, confirm the freeze frame data.
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The ECM records engine conditions in the form of freeze frame data every 0.5 seconds. Using the intelligent tester, 5 separate sets of freeze frame data, including the data values at the time when the DTC was set, can be checked.
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3 data sets before the DTC was set.
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1 data set when the DTC was set.
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1 data set after the DTC was set.
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These data sets can be used to duplicate the condition of the vehicle around the time of the occurrence of the malfunction. The data may assist in identifying of the cause of the malfunction, and in judging whether it was temporary or not.
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LIST OF FREEZE FRAME DATA
for Models w/ CVT (w/o Euro-OBD) Tester Display Measurement Item Diagnostic Note Vehicle Speed Vehicle speed Speed indicated on speedometer Engine Speed Engine speed - Calculate Load Calculate load Calculated load by ECM MAF Mass air flow volume If value approximately 0.0 gm/sec:
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Mass air flow meter sub-assembly power source circuit open or shorted
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VG circuit open or shorted
If value 271.0 gm/sec or more:
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E2G circuit open
Atmosphere Pressure Atmospheric pressure - Coolant Temp Engine coolant temperature If value -40°C (-40°F), sensor circuit open
If value 140°C (284°F) or more, sensor circuit shorted
Intake Air Intake air temperature If value -40°C (-40°F), sensor circuit open
If value 140°C (284°F) or more, sensor circuit shorted
Engine Run Time Accumulated engine running time - Initial Engine Coolant Temp Engine coolant temperature at engine start - Initial Intake Air Temp Intake air temperature at engine start - 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 % Throttle position - Throttl Sensor #2 Volt % Throttle sensor positioning #2 - Throttle Sensor Position Throttle sensor positioning - Throttle Motor DUTY Throttle actuator - Injector (Port) Injection period of No. 1 cylinder - Injection Volum (Cylinder 1) Injection volume - Fuel Pump/Speed Status Fuel pump/speed status - EVAP (Purge) VSV Purge VSV duty ratio - Evap Purge Flow Purge flow - Purge Density Learn Value Learning value of purge density - EVAP Purge VSV Purge VSV - 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 - AFS Current B1S1 Air fuel ratio sensor current - O2S B1S2 Heated oxygen sensor output voltage - 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)
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OL (Open Loop): Has not yet satisfied conditions to go closed loop
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CL (Closed Loop): Using air fuel ratio sensor as feedback for fuel control
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OLDrive: Open loop due to driving conditions (fuel enrichment)
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OLFault: Open loop due to detected system fault
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CLFault: Closed loop but air fuel ratio sensor, which used for fuel control malfunctioning
Fuel System Status #2 Fuel system status (bank 2) Unused IGN Advance Ignition advance - Knock Feedback Value Feedback value of knocking - Knock Correct Learn Value Correction learning value of knocking - VVT Control Status #1 VVT control status (bank 1) - Starter Signal Starter signal - Starter Control Starter control - Power Steering Signal Power steering signal - Starter Relay Starter relay status - Power Steer. Sig. Record Power steering signal (history) Signal status usually ON until engine switch is turned off ACC Relay ACC relay cut signal status - Neutral Position SW Signal Park/neutral position switch assembly signal - Stop Light Switch Stop light switch assembly - A/C Signal Air conditioning signal - Closed Throttle Position SW Closed throttle position switch - Fuel Cut Condition Fuel cut condition - Immobiliser Communication Immobiliser communication - Electrical Load Signal Electrical load signal - 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 - Electric Fan Motor Electric fan motor (cooling fan motor) - Idle Fuel Cut Idle fuel cut ON: when throttle valve fully closed and engine speed over 2500 rpm FC TAU Fuel cut with very light load Fuel cut being performed under very light load to prevent incomplete engine combustion for Other Models Tester Display Measurement Item Diagnostic Note Vehicle Speed Vehicle speed Speed indicated on speedometer Engine Speed Engine speed - Calculate Load Calculated load Calculated load by ECM Vehicle Load Vehicle load Load percentage in terms of maximum intake air flow amount MAF Mass air flow volume If approximately 0.0 gm/sec:
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Mass air flow meter sub-assembly power source circuit open or shorted
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VG circuit open or shorted
If value 271.0 gm/sec or more:
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E2G circuit open
Atmosphere Pressure Atmospheric pressure - Coolant Temp Engine coolant temperature If -40°C (-40°F), sensor circuit open
If 140°C (284°F) or more, sensor circuit shorted
Intake Air Intake air temperature If -40°C (-40°F), sensor circuit open
If 140°C (284°F) or more, sensor circuit shorted
Engine Run Time Accumulated engine running time - Initial Engine Coolant Temp Engine coolant temperature at engine start - Initial Intake Air Temp Intake air temperature at engine start - Battery Voltage Battery voltage - Glow Indicator Supported Glow indicator supported - Glow Indicator Glow indicator status - 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 % Throttle position - Throttl Sensor #2 Volt % Throttle sensor positioning #2 - Throttle Sensor Position Throttle sensor positioning - Throttle Motor DUTY Throttle actuator - Throttle Position Throttle valve opening angle When the engine stalls, is difficult to start, or idles roughly ISC Flow Flow rate calculated from information from each sensor When the engine stalls, is difficult to start, or idles roughly ISC Position Target valve opening angle calculated from ISC When the engine stalls, is difficult to start, or idles roughly ISC Feedback Value ISC feedback value When the engine stalls, is difficult to start, or idles roughly ISC Learning Value ISC learning value When the engine stalls, is difficult to start, or idles roughly Electric Load Feedback Val Electrical load feedback value When the engine stalls, is difficult to start, or idles roughly Air Conditioner FB Val Air conditioner load feedback value When the engine stalls, is difficult to start, or idles roughly Low Revolution Control Status of low engine speed control When the engine stalls, is difficult to start, or idles roughly N Range Status Judgment for shift lever N position When the engine stalls, is difficult to start, or idles roughly Eng Stall Control FB Flow Electrical load feedback value When the engine stalls, is difficult to start, or idles roughly Deposit Loss Flow Deposit loss air flow rate When the engine stalls, is difficult to start, or idles roughly Injector (Port) Injection period of No. 1 cylinder - Injection Volum (Cylinder 1) Injection volume - Fuel Pump/Speed Status Fuel pump/speed status - Current Fuel Type Current fuel type - EVAP (Purge) VSV Purge VSV duty ratio - Evap Purge Flow Ratio of evaporative purge flow to intake air volume - Purge Density Learn Value Learning value of purge density - EVAP Purge VSV Purge VSV - Purge Cut VSV Duty Purge 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 - 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 voltage - O2 Heater B1S2 Heated oxygen sensor operation - 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 for 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)
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OL (Open Loop): Has not yet satisfied conditions to go closed loop
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CL (Closed Loop): Using air fuel ratio sensor as feedback for fuel control
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OLDrive: Open loop due to driving conditions (fuel enrichment)
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OLFault: Open loop due to detected system fault
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CLFault: Closed loop but air fuel ratio sensor, which is used for fuel control, malfunctioning
Fuel System Status #2 Fuel system status (bank 2) Unused IGN Advance Ignition advance - Knock Feedback Value Feedback value of knocking - Knock Correct Learn Value Correction learning value of knocking - Idle Spark Advn Ctrl #1 Ignition timing advance value
(for No. 1 cylinder)
When the engine stalls, is difficult to start, or idles roughly Idle Spark Advn Ctrl #2 Ignition timing advance value
(for No. 2 cylinder)
When the engine stalls, is difficult to start, or idles roughly Idle Spark Advn Ctrl #3 Ignition timing advance value
(for No. 3 cylinder)
When the engine stalls, is difficult to start, or idles roughly Idle Spark Advn Ctrl #4 Ignition timing advance value
(for No. 4 cylinder)
When the engine stalls, is difficult to start, or idles roughly Actual VVT Angle #1 Actual VVT angle (bank 1) - VVT Control Status #1 VVT control status (bank 1) - VVT Advance Fail Status of VVT advance fail - Catalyst Temp B1S1 Estimated catalyst temperature (sensor 1) - Catalyst Temp B1S2 Estimated catalyst temperature (sensor 2) - Starter Signal Starter signal - Starter Control Starter control - Power Steering Signal Power steering signal - Starter Relay Starter relay status - ACC Relay ACC relay cut signal status - Neutral Position SW Signal Park/neutral position switch assembly signal - Stop Light Switch Stop light switch assembly - A/C Signal Air conditioning signal - Idle Up Signal Idle up signal - Closed Throttle Position SW Closed throttle position switch - Fuel Cut Condition Fuel cut condition - Immobiliser Communication Immobiliser communication - 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 Distance driven after battery cable disconnected - TC and TE1 TC and TE1 terminals of DLC3 - Ignition Trig. Count Ignition counter - 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 Engine speed when misfire occurs - Misfire Load Engine load when misfire occurs - Misfire Margin Margin to detect engine misfire - Engine Speed (Starter Off) Engine speed when starter off When the engine stalls, is difficult to start, or idles roughly Starter Count Number of times starter turned on after engine switch turned from off to on (IG) When the engine stalls, is difficult to start, or idles roughly Run Dist of Previous Trip Distance traveled during previous trip When the engine stalls, is difficult to start, or idles roughly Engine Starting Time Engine run time
(elapsed time from engine switch on (IG) to off)
When the engine stalls, is difficult to start, or idles roughly Previous Trip Coolant Temp Engine coolant temperature of previous trip When the engine stalls, is difficult to start, or idles roughly Previous Trip Intake Temp Intake temperature of previous trip When the engine stalls, is difficult to start, or idles roughly Engine Oil Temperature Engine oil temperature (estimated) When the engine stalls, is difficult to start, or idles roughly Previous Trip Eng Oil Temp Engine oil temperature of previous trip When the engine stalls, is difficult to start, or idles roughly Ambient Temp for A/C Ambient temperature When the engine stalls, is difficult to start, or idles roughly Previous Trip Ambient Temp Ambient temperature of previous trip When the engine stalls, is difficult to start, or idles roughly Engine Start Hesitation History of instance of slow engine starts When the engine stalls, is difficult to start, or idles roughly Low Rev for Eng Start History of low engine speed after engine starts When the engine stalls, is difficult to start, or idles roughly Minimum Engine Speed Minimum engine speed When the engine stalls, is difficult to start, or idles roughly Electric Fan Motor Electric fan motor (cooling fan motor) - Brake Override System Brake override system status - Idle Fuel Cut Idle fuel cut ON: when throttle valve fully closed and engine speed over 2500 rpm FC TAU Fuel cut with very light load Fuel cut being performed with very light load to prevent incomplete engine combustion Immobiliser Fuel Cut Status of the immobiliser fuel cut - Electrical Load Signal 1 Electrical load signal - Electrical Load Signal 2 Electrical load signal - Electrical Load Signal 3 Electrical load signal - -