Toyota Venza manuals

Toyota Venza: 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.

(c) Turn the Techstream 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)

-

Check Mode Procedure
CHECK MODE PROCEDURE HINT: Techstream only: Compared to normal mode, check mode is more sensitive to malfunctions. Therefore, check mode can detect malfunctions that cannot be detected in normal ...

Fail-safe Chart
FAIL-SAFE CHART If any of the following DTCs are stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily or stops fuel injection. DTC Code Compone ...

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