Sfi System Freeze Frame Data

Engine. Camry. Acv40 Gsv40
2Az-Fe Engine Control System. Camry. Acv40 Gsv40

  1. DESCRIPTION

  1. LIST OF FREEZE FRAME DATA

Sfi System -- Freeze Frame Data



DESCRIPTION
  1. 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.
    HINT:
    If it is impossible to duplicate the problem even though a DTC is detected, confirm the freeze frame data.

  1. Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Freeze Frame Data
    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.
    1. 3 data sets before the DTC was set.
    2. 1 data set when the DTC was set.
    3. 1 data set after the DTC was set.
    1. 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.

LIST OF FREEZE FRAME DATA

Except 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
Vehicle Load
Vehicle load
Load percentage in terms of maximum intake air flow amount
MAF
Mass air flow volume
If value approximately 0.0 gm/sec:
  1. Mass air flow meter sub-assembly power source circuit open or shorted
  1. VG circuit open or shorted
If value 271.0 gm/sec or more:
  1. 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)
  1. OL (Open Loop): Has not yet satisfied conditions to go closed loop
  2. CL (Closed Loop): Using air fuel ratio sensor as feedback for fuel control
  3. OLDrive: Open loop due to driving conditions (fuel enrichment)
  4. OLFault: Open loop due to detected system fault
  5. 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)
-
Catalyst Temp B1S1
Estimated catalyst temperature (sensor 1)
-
Catalyst Temp B1S2
Estimated catalyst temperature (sensor 2)
-
Starter Signal
Starter signal
-
Power Steering Signal
Power steering signal
-
Power Steer. Sig. Record
Power steering signal (history)
Signal status usually ON until ignition switch is turned off
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
-
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
-
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 cylinders misfire count
-
Misfire RPM
Engine speed when misfire occurs
-
Misfire Load
Engine load when misfire occurs
-
Misfire Margin
Margin to detect engine misfire
-
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 Euro-OBD
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:
  1. Mass air flow meter sub-assembly power source circuit open or shorted
  1. VG circuit open or shorted
If value 271.0 gm/sec or more:
  1. 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
-
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
Feedback value of intake air flow
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
-
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 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
-
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)
  1. OL (Open Loop): Has not yet satisfied conditions to go closed loop
  1. CL (Closed Loop): Using air fuel ratio sensor as feedback for fuel control
  1. OLDrive: Open loop due to driving conditions (fuel enrichment)
  1. OLFault: Open loop due to detected system fault
  1. 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
-
Power Steering Signal
Power steering signal
-
Neutral Position SW Signal
Park/neutral position switch assembly signal
-
Clutch Switch
Clutch switch
-
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
-
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 ignition switch turned from off to ON
When the engine stalls, is difficult to start, or idles roughly
Run Dist of Previous Trip
Distance traveled during previous trip
  1. Run Dist of Previous Trip continues to display the distance traveled in the previous trip during the detection period of DTC P1604, which ends 5 seconds after the engine starts.
    Then the previous trip distance will be cleared and the distance traveled during this trip, which is calculated based on the vehicle speed, will be displayed.
  2. When the engine is difficult to start and DTC P1604 is stored, Run Dist of Previous Trip will continue to be displayed.
    When inspecting for DTCs other than P1604, or when taking a snapshot, the distance traveled during this trip will be displayed.
Engine Starting Time
Engine run time
(elapsed time from ignition switch ON 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)
-
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
-