Toyota Venza: Freeze Frame Data

Toyota Venza Service Manual / 1ar-fe Engine Control / Sfi System / Freeze Frame Data

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 replicate the problem even though a DTC is output, confirm 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, including the data values at the time when the DTC is stored, can be checked.
- 3 data sets before the DTC is stored.
- 1 data set when the DTC is stored.
- 1 data set after the DTC is stored.
- 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. PENDING FREEZE FRAME DATA

HINT:

Pending freeze frame data is stored when a 2 trip DTC is first detected during the first trip.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Select a DTC in order to display its pending freeze frame data.

HINT:

Pending freeze frame data is cleared when any of the following occurs.
- Using the Techstream, the DTCs cleared.
- The cable is disconnected from the negative (-) battery terminal.
- 40 trips with the engine fully warmed up have been performed after returning to normal. (Pending freeze frame data will not be cleared by only returning the system to normal.)
With previous pending freeze frame data stored, if pending freeze frame data is newly stored when a 2 trip DTC is detected in the first trip, the old freeze frame data will be replaced with the new one of the newly detected DTC in the next trip.

3. 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/s: The mass air flow meter power source circuit is open. The VG circuit is open or shorted. If 271.0 gm/s or more: The E2G circuit is open.
Atmosphere Pressure	Atmospheric pressure	-
Coolant Temp	Engine coolant temperature	If the value is -40°C (-40°F), the sensor circuit is open. If the value is higher than 135°C (275°F), the sensor circuit is shorted.
Intake Air	Intake air temperature	If the value is -40°C (-40°F), the sensor circuit is open. If the value is higher than 128°C (262°F), the sensor circuit is shorted.
Engine Run Time	Accumulated engine running time	-
Initial Engine Coolant Temp	Engine coolant temperature at engine start	-
Coolant Temp Variation after Waterpump Start	Engine coolant temperature variation after water pump started	-
Initial Intake Air Temp	Initial intake air temperature	-
Intake Air Temp Variation after Engine Start	Intake air temperature variation after engine started	-
Battery Voltage	Battery voltage	-
Glow Indicator Supported	Glow indicator supported	-
Glow Indicator	Glow indicator	-
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	The throttle opening angle recognized by the ECM.
Throttl Sensor #2 Volt %	Absolute throttle position sensor #2	The throttle opening angle recognized by the ECM.
Throttle Sensor Position	Throttle sensor positioning	The calculated value based on VTA1.
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 using information from mass air flow meter sub-assembly	When the engine stalls, is difficult to start, or idles roughly
ISC Position	Requested throttle opening amount calculated using ISC control	This is the throttle valve opening amount while the engine is idling (the throttle valve opening amount necessary to maintain ISC air flow).
ISC Feedback Value	ISC feedback amount	When the engine stalls, is difficult to start, or idles roughly
ISC Learning Value	ISC learned airflow value	When the engine stalls, is difficult to start, or idles roughly
Electric Load Feedback Val	Compensation flow rate according to electrical load	When the engine stalls, is difficult to start, or idles roughly
Air Conditioner FB Val	Compensation flow rate according to air conditioner load	When the engine stalls, is difficult to start, or idles roughly
Low Revolution Control	Low engine speed control operation state	When the engine stalls, is difficult to start, or idles roughly
N Range Status	Shift lever N status	When the engine stalls, is difficult to start, or idles roughly
Eng Stall Control FB Flow	Intake air compensation flow rate	When the engine stalls, is difficult to start, or idles roughly
Deposit Loss Flow	Flow loss due to deposits	This value indicates the amount of compensation for a decrease in flow passage area due to the buildup of deposits on the throttle valve. Check this value for reference when the engine stalls, is difficult to start, or idles roughly. When the ISC learned value is initialized, performing the following procedures in order to quickly relearn the Deposit Loss Flow value. After the Deposit Loss Flow has been relearned, gradual fine adjustments will continue automatically. Start the engine cold and allow the engine to idle. After the engine is warmed up (engine coolant temperature is above 80°C [176°F]), allow the engine to idle for an additional 5 minutes. Turn the ignition switch off and wait for 30 seconds. Start the engine again, and allow the engine to idle for 5 minutes.
Injector (Port)	Injection period of No. 1 cylinder	-
Injection Volum (Cylinder1)	Injection volume (cylinder 1)	The quantity of fuel injection volume for 10 times.
Fuel Pump/Speed Status	Fuel pump/status	-
Vacuum Pump	Key-off EVAP system leak detection pump status	-
TCV Status	Tumble control valve status	-
Current Fuel Type	Current Fuel Type	-
EVAP (Purge) VSV	EVAP (purge) VSV control duty	The order signal from the ECM.
Evap Purge Flow	Ratio of evaporative purge flow to intake air volume	-
Purge Density Learn Value	Learned value of purge density	-
EVAP System Vent Valve	Key-off EVAP system vent valve status	-
EVAP Purge VSV	VSV status for EVAP control	-
Purge Cut VSV Duty	Purge cut VSV duty	-
Target Air-Fuel Ratio	Ratio compared to stoichiometric level	-
AF Lambda B1S1	Fuel trim at air fuel ratio sensor	-
AFS Voltage B1S1	Air fuel ratio sensor output voltage for bank 1 sensor 1	-
AFS Current B1S1	Air fuel ratio sensor output current for bank 1 sensor 1	-
A/F Heater Duty #1	Air fuel ratio heater duty ratio	-
O2S B1S2	Heated oxygen sensor output voltage for bank 1 sensor 2	-
O2S Impedance B1S2	Heated oxygen sensor impedance for bank 1 sensor 2	-
O2 Heater B1S2	Heated oxygen sensor heater	-
O2 Heater Curr Val B1S2	Heated oxygen sensor current for bank 1 sensor 2	-
Short FT #1	Short-term fuel trim of bank 1	Short-term fuel compensation is used to maintain the air fuel ratio at the stoichiometric level.
Long FT #1	Long-term fuel trim of bank 1	Overall fuel compensation is carried out in the long-term to compensate for a continual deviation of the short-term fuel trim from the central value.
Total FT #1	Total fuel trim of bank 1	-
Fuel System Status #1	Fuel system status (bank 1)	OL (Open Loop): Has not yet satisfied the conditions to go to closed loop. CL (Closed Loop): Using the air fuel ratio sensor as feedback for fuel control. OLDrive: Open loop due to driving conditions (fuel enrichment). OLFault: Open loop due to a detected system fault. CLFault: Closed loop but the air fuel ratio sensor, which is used for fuel control, is malfunctioning.
Fuel System Status #2	Fuel system status (bank 2)	Unused
IGN Advance	Ignition timing advance for No. 1 cylinder	-
Knock Feedback Value	Feedback value of knocking	-
Knock Correct Learn Value	Learned knocking correction value	-
Idle Spark Advn Ctrl #1	Individual cylinder timing advance compensation amount (No. 1 cylinder)	When the engine stalls, is difficult to start, or idles roughly
Idle Spark Advn Ctrl #2	Individual cylinder timing advance compensation amount (No. 2 cylinder)	When the engine stalls, is difficult to start, or idles roughly
Idle Spark Advn Ctrl #3	Individual cylinder timing advance compensation amount (No. 3 cylinder)	When the engine stalls, is difficult to start, or idles roughly
Idle Spark Advn Ctrl #4	Individual cylinder timing advance compensation amount (No. 4 cylinder)	When the engine stalls, is difficult to start, or idles roughly
ACIS VSV	VSV for acoustic control induction system (ACIS)	-
IAC Sensor Voltage	Intake air control valve position sensor output voltage	-
Intake Air Control Position	Intake air control valve position	-
Actual VVT Angle #1	VVT displacement angle	-
Actual VVT Ex Angle #1	Exhaust VVT displacement angle	-
VVT Control Status #1	VVT control (bank 1) status	-
VVT Advance Fail	VVT control failure status	-
Catalyst Temp B1S1	Estimated catalyst temperature (for sensor 1)	-
Catalyst Temp B1S2	Estimated catalyst temperature (for sensor 2)	-
Starter Signal	Starter signal (STA terminal input status)	-
Power Steering Signal	Power steering signal	-
Neutral Position SW Signal	Park/neutral position switch status	-
Stop Light Switch	Stop light switch status	-
A/C Signal	A/C switch status	-
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	Total distance vehicle driven after DTC cleared	-
Warmup Cycle Cleared DTC	Warm-up cycle after DTC cleared	-
Dist Batt Cable Disconnect	Total distance vehicle driven after 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 counter to calculated misfire count	-
Cylinder #1 Misfire Count	Misfire count of cylinder 1	-
Cylinder #2 Misfire Count	Misfire count of cylinder 2	-
Cylinder #3 Misfire Count	Misfire count of cylinder 3	-
Cylinder #4 Misfire Count	Misfire count of cylinder 4	-
All Cylinders Misfire Count	All cylinders misfire count	-
Misfire RPM	Average engine speed when misfire occurs	-
Misfire Load	Average engine load when misfire occurred	-
Misfire Margin	Margin to detect engine misfire	-
Catalyst OT MF F/C	Fuel cut to prevent catalyst from overheating during misfire	-
Cat OT MF F/C History	History of fuel cut to prevent catalyst from overheating during misfire	-
Cat OT MF F/C Cylinder#1	Display of fuel cut operation in No. 1 cylinder (if certain level of misfire malfunction is detected)	-
Cat OT MF F/C Cylinder#2	Display of fuel cut operation in No. 2 cylinder (if certain level of misfire malfunction is detected)	-
Cat OT MF F/C Cylinder#3	Display of fuel cut operation in No. 3 cylinder (if certain level of misfire malfunction is detected)	-
Cat OT MF F/C Cylinder#4	Display of fuel cut operation in No. 4 cylinder (if certain level of misfire malfunction is detected)	-
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 to ON	When the engine stalls, is difficult to start, or idles roughly
Run Dist of Previous Trip	Distance driven during previous trip	Before 5 seconds elapse after starting the engine, which is DTC P1604 (Startability Malfunction) detection duration, this parameter indicates the distance driven during the previous trip. After 5 seconds elapse after starting the engine, this parameter indicates the distance driven during the current trip calculated from the vehicle speed signal. HINT: Run Dist of Previous Trip in freeze frame data which were present when the startability malfunction occurred (DTC P1604 detected) indicates the distance driven during the previous trip, but in all other cases, such as for the snapshot data of Data List (real-time measurements), or for freeze frame data which were present when the DTCs other than P1604 were detected, the value indicates the distance driven during the current trip.
Engine Starting Time	Time elapsed before engine starts (after starter turns on until engine speed reaches 400 rpm)	When the engine stalls, is difficult to start, or idles roughly
Previous Trip Coolant Temp	Engine coolant temperature during previous trip	When the engine stalls, is difficult to start, or idles roughly
Previous Trip Intake Temp	Intake air temperature during previous trip	When the engine stalls, is difficult to start, or idles roughly
Engine Oil Temperature	Engine oil temperature (estimated temperature)	When the engine stalls, is difficult to start, or idles roughly
Previous Trip Eng Oil Temp	Engine oil temperature during previous trip	When the engine stalls, is difficult to start, or idles roughly
Ambient Temp for A/C	Ambient temperature for A/C	When the engine stalls, is difficult to start, or idles roughly
Previous Trip Ambient Temp	Ambient temperature during previous trip	When the engine stalls, is difficult to start, or idles roughly
Engine Start Hesitation	History of hesitation during engine start	When the engine stalls, is difficult to start, or idles roughly
Low Rev for Eng Start	History of low engine speed after engine start	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
Fuel Cut Elps Time	Elapsed time since fuel cut due to high engine speed	-
A/F Learn Value Idle #1	Air fuel ratio learn value of idle area for bank 1	-
A/F Learn Value Low #1	Air fuel ratio learn value of low load area for bank 1	-
A/F Learn Value Mid1 #1	Air fuel ratio learn value of middle1 load area for bank 1	-
A/F Learn Value Mid2 #1	Air fuel ratio learn value of middle2 load area for bank 1	-
A/F Learn Value High #1	Air fuel ratio learn value of high load area for bank 1	-
Tumble C.V Duty Ratio	Intake air control valve duty ratio	-
Electric Fan Motor	Electric fan motor status	-
Brake Override System	Brake override system status	-
Electric Cooling Fan High	Electric cooling fan high speed status	-
Electric Cooling Fan Low	Electric cooling fan low speed status	-
Idle Fuel Cut	Fuel cut idle	ON: When the throttle valve is fully closed and the engine speed is more than 2800 rpm.
FC TAU	Fuel cut during very light load	The fuel cut is being performed under a very light load to prevent incomplete engine combustion.
Immobiliser Fuel Cut	Status of immobiliser fuel cut	-
Immobiliser Fuel Cut History	Status of immobiliser fuel cut history	-
Communication with ECT	Status of the communication with TCM	-
Comm with Power Manage	Status of the communication with power management control ECU	-
Comm with Air Conditioner	Status of the communication with air conditioning amplifier assembly	-
Electrical Load Signal 1	Electrical load signal	-
Electrical Load Signal 2	Electrical load signal	-
Electrical Load Signal 3	Electrical load signal	-
A/F Sensor Determination (worst value) #1	Worst judgment value of air fuel ratio sensor output for bank 1	-
Engine Speed Fluctuation Avg (worst value) #1	Worst value of average engine speed fluctuation (cylinder 1)	-
Engine Speed Fluctuation Avg (worst value) #2	Worst value of average engine speed fluctuation (cylinder 2)	-
Engine Speed Fluctuation Avg (worst value) #3	Worst value of average engine speed fluctuation (cylinder 3)	-
Engine Speed Fluctuation Avg (worst value) #4	Worst value of average engine speed fluctuation (cylinder 4)	-
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 from ECT	-
SPD (NO)	Output shaft speed	-
SPD (NT)	Input turbine speed	-
ECT Lock Up	ECT lock up status	-
SPD (NC)	Counter gear speed	-
Shift SW Status (P Range)	Park/neutral position switch assembly status	-
Shift SW Status (R Range)	Park/neutral position switch assembly status	-
Shift SW Status (N Range)	Park/neutral position switch assembly status	-
Shift SW Status (N, P Range) Supported	Status of park/neutral position switch assembly (N or P) supported	-
Shift SW Status (N, P Range)	Park/neutral position switch assembly status (P or N)	-
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 assembly status	-
Engine Speed	Engine speed	-
AFS Voltage B1S1	Air fuel ratio sensor output voltage for bank 1 sensor 1	-
O2S B1S2	Heated oxygen sensor output voltage for bank 1 sensor 2	-
AF Lambda B1S1	Fuel trim at air fuel ratio sensor	-
Short FT #1	Short-term fuel trim of bank 1	-
Long FT #1	Long-term fuel trim of bank 1	-
Total FT #1	Total fuel trim of bank 1	-
Fuel System Status #1	Fuel system status (bank 1)	-
Fuel System Status #2	Fuel system status (bank 2)	-

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