Freeze Frame Data
- 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 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 replicate the problem even though a DTC is detected, 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 was stored, can be checked.
- 3 data sets before the DTC was stored.
- 1 data set when the DTC was stored.
- 1 data set after the DTC was 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 judging whether it was temporary or not.
- 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.
- PENDING FREEZE FRAME DATA
HINT:
Pending freeze frame data is stored when a 2 trip DTC is first detected during the first trip.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Trouble Codes.
- 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.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Pending freeze frame data is cleared when any of the following occurs.
- LIST OF FREEZE FRAME DATA
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 - MAF Mass air flow volume If the value is approximately 0.0 gm/sec: - Mass air flow meter power source circuit open or short
- VG circuit open or short
If the value is 271.0 gm/sec or more:- E2G circuit open
Atmosphere Pressure Atmospheric pressure - Coolant Temp Engine coolant temperature If the value is -40°C (-40°F), sensor circuit open
If the value is higher than 135°C (275°F), sensor circuit shortedIntake Air Intake air temperature If the value is -40°C (-40°F), sensor circuit open
If the value is higher than 128°C (262°F), sensor circuit shortedEngine Run Time Accumulated engine running time - Initial Engine Coolant Temp Initial engine coolant temperature - Initial Intake Air Temp Initial intake air temperature - 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 % Throttle sensor positioning - Throttl Sensor #2 Volt % Throttle sensor positioning #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.
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 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 Low engine speed control operation state 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 (Cylinder 1) Injection volume - Fuel Pump Speed Control Fuel pump speed control status - Fuel Pump/Speed Status Fuel pump/speed status - Vacuum Pump Leak detection pump ON: Operating Current Fuel Type Current fuel type - EVAP (Purge) VSV Purge VSV control duty Command signal from ECM EVAP Purge Flow Purge flow - Purge Density Learn Value Learning 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 - AF Lambda B2S1 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 Voltage B2S1 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 - AFS Current B2S1 Air fuel ratio sensor current - A/F Heater Duty #1 Air fuel ratio heater duty ratio - A/F Heater Duty #2 Air fuel ratio 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 B2S2 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 (Bank 1) - O2S Impedance B2S2 Heated oxygen sensor impedance (Bank 2) - O2 Heater B1S2 Heated oxygen sensor heater - O2 Heater B2S2 Heated oxygen sensor heater - O2 Heater Curr Val B1S2 Heated oxygen sensor current - O2 Heater Curr Val B2S2 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 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 - Total FT #1 Total fuel trim - Short FT #2 Short-term fuel trim Short-term fuel compensation used to maintain air fuel ratio at stoichiometric air fuel ratio Long FT #2 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 A/F Learn Value Idle #2 Air fuel ratio learn value of idle area for bank 2 - A/F Learn Value Low #2 Air fuel ratio learn value of low load area for bank 2 - A/F Learn Value Mid1 #2 Air fuel ratio learn value of middle1 load area for bank 2 - A/F Learn Value Mid2 #2 Air fuel ratio learn value of middle2 load area for bank 2 - A/F Learn Value High #2 Air fuel ratio learn value of high load area for bank 2 - Total FT #2 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
Fuel System Status #2 Fuel system status (Bank 2) - 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 Feedback value of knocking - Knock Correct Learn Value Correction learning value of knocking - 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.Idle Spark Advn Ctrl #5 Individual cylinder timing advance compensation amount (No. 5) Reference:
Check the value when engine stalls, is difficult to start, or idles roughly.Idle Spark Advn Ctrl #6 Individual cylinder timing advance compensation amount (No. 6) Reference:
Check the value when engine stalls, is difficult to start, or idles roughly.ACIS VSV Intake air control valve for acoustic control induction system - AICV VSV Vacuum switching valve for air intake control system - Actual VVT Angle #1 VVT displacement angle for bank 1 - Actual VVT Angle #2 VVT displacement angle for bank 2 - Actual VVT Ex Angle #1 Exhaust VVT displacement angle for bank 1 - Actual VVT Ex Angle #2 Exhaust VVT displacement angle for bank 2 - VVT Control Status #1 VVT control status (bank 1) - VVT Control Status #2 VVT control status (bank 2) - VVT Advance Fail VVT control failure status - Catalyst Temp B1S1 Estimated catalyst temperature - Catalyst Temp B2S1 Estimated catalyst temperature - Catalyst Temp B1S2 Estimated catalyst temperature - Catalyst Temp B2S2 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 - Immobilizer Communication Immobilizer communication ON or OFF OFF: Communication malfunctioning, or engine immobilizer 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 - Cylinder #5 Misfire Count Cylinder #5 misfire count - Cylinder #6 Misfire Count Cylinder #6 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 - Cat OT MF F/C Cylinder#5 Catalyst over temperature misfire prevention #5 - Cat OT MF F/C Cylinder#6 Catalyst over temperature misfire prevention #6 - 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.- 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 the freeze frame data 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 the Data List (real-time measurements), or for freeze frame data present when DTCs other than P1604 were detected, the value indicates the distance driven during the current trip.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.ACM Duty vacuum switching valve for active control engine mount duty ratio - 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 2800 RPM FC TAU FC TAU Fuel cut being performed under very light load to prevent incomplete engine combustion Immobilizer Fuel Cut Status of the immobilizer fuel cut - Immobilizer Fuel Cut History Status of the immobilizer fuel cut history - Communication with ECT Status of the communication with ECT - 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 - A/F Sensor Determination (worst value) #1 Worst judgment value of air fuel ratio sensor output for bank 1 - A/F Sensor Determination (worst value) #2 Worst judgment value of air fuel ratio sensor output for bank 2 - 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) - Engine Speed Fluctuation Avg (worst value) #5 Worst value of average engine speed fluctuation (cylinder 5) - Engine Speed Fluctuation Avg (worst value) #6 Worst value of average engine speed fluctuation (cylinder 6) - 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 shaft speed Data is displayed in increments of 50 RPM ECT Lock Up ECT lock up status - SPD (NC) Counter gear speed - Overdrive Cut Switch #1 Overdrive cut signal (for cruise control) - 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 Shift position N or P supported - Shift SW Status (N, P Range) Shift position N or P 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 assembly status -