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, five separate sets of freeze frame data, including the data values at the time when the DTC was set, can be checked.
- 3 data sets before the DTC was set.
- 1 data set when the DTC was set.
- 1 data set after the DTC was set.
- 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.
- LIST OF FREEZE FRAME DATA
LABEL
(Techstream Display)Measurement Item Diagnostic Note Vehicle Speed Vehicle speed Speed indicated on speedometer Engine Speed Engine speed - Calculate Load Calculated load Load calculated 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: - Mass air flow meter power source circuit open or shorted
- VG circuit open or shorted
If value 271.0 gm/sec or more:- 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), sensor circuit shortedIntake Air Intake air temperature If value -40°C (-40°F), sensor circuit open
If value 140°C (284°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 - Accel Sens. No. 1 Volt % Accelerator pedal position No. 1 - Accel Sens. No. 2 Volt % Accelerator pedal position No. 2 - Throttle Sensor Volt % Absolute throttle position - Throttl Sensor #2 Volt % Absolute 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 Deposit Loss Flow Deposit loss air flow rate When the engine stalls, is difficult to start, or idles roughly Fuel Press Fuel pressure - Injector (Port) Injector - Injection Volum (Cylinder 1) Injection volume - Fuel Pump Speed Control F/PMP relay status - Fuel Pump/Speed Status Fuel pump/speed status - Vacuum Pump Key-off EVAP system leak detection pump status - Fuel Pressure Target Value Target fuel pressure - Fuel Pump Duty (D4) Fuel pump duty (D4) (Bank 1) - Fuel Pump2 Duty (D4) Fuel pump duty (D4) (Bank 2) - HP FP Discharge Rate High pressure fuel pump discharge rate (Bank 1) - HP FP Discharge Rate 2 High pressure fuel pump discharge rate (Bank 2) - Injection Way Injection mode - Injection Switching Status Prohibition of changing the D-4S injection method - Injection Timing (D4) Injection timing (D4) - Injection Time (D4) Injection time (D4) - EVAP (Purge) VSV EVAP purge VSV duty ratio - Evap Purge Flow Purge flow - Purge Density Learn Value Learning value of purge density - EVAP System Vent Valve Key-off EVAP system vent valve status - EVAP Purge VSV Purge VSV VSV for EVAP controlled by ECM (ground side duty control) Purge Cut VSV Duty Purge cut VSV duty - Target Air-Fuel Ratio Target air fuel ratio - AF Lambda B1S1 Fuel trim due to air fuel ratio sensor - AF Lambda B2S1 Fuel trim due to air fuel ratio sensor - AFS Voltage B1S1 Air fuel ratio sensor output voltage - AFS Voltage B2S1 Air fuel ratio sensor output voltage - AFS Current B1S1 Air fuel ratio sensor output current - AFS Current B2S1 Air fuel ratio sensor output current - A/F Heater Duty #1 Air fuel ratio heater duty - A/F Heater Duty #2 Air fuel ratio heater duty - O2S B1S2 Heated oxygen sensor output voltage - O2S B2S2 Heated oxygen sensor output voltage - O2S Impedance B1S2 Sub heated oxygen sensor impedance - O2S Impedance B2S2 Sub heated oxygen sensor impedance - 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 for a continual deviation of short-term fuel trim from central value 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 for a continual deviation of short-term fuel trim from central value 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, which used for fuel control 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, which used for fuel control 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 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 Idle Spark Advn Ctrl #5 Ignition timing advance value (for No. 5 cylinder) When the engine stalls, is difficult to start, or idles roughly Idle Spark Advn Ctrl #6 Ignition timing advance value (for No. 6 cylinder) When the engine stalls, is difficult to start, or idles roughly Idle Spark Advn Ctrl #7 Ignition timing advance value (for No. 7 cylinder) When the engine stalls, is difficult to start, or idles roughly Idle Spark Advn Ctrl #8 Ignition timing advance value (for No. 8 cylinder) When the engine stalls, is difficult to start, or idles roughly AICV VSV AICV VSV - Actual VVT Angle #1 Actual VVT angle (bank 1) - Actual VVT Angle #2 Actual VVT angle (bank 2) - Actual VVT Ex Angle #1 Actual exhaust VVT angle (bank 1) - Actual VVT Ex Angle #2 Actual exhaust VVT angle (bank 2) - VVT Advance Fail Status of VVT advance fail - Catalyst Temp B1S1 Catalyst temperature - Catalyst Temp B2S1 Catalyst temperature - Catalyst Temp B1S2 Catalyst temperature - Catalyst Temp B2S2 Catalyst temperature - Starter Signal Starter signal - Starter Control Starter control - Starter Relay ST relay status - ACC Relay ACC relay status - Neutral Position SW Signal Neutral position switch signal - 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 - Engine Oil Pressure SW Engine oil pressure switch status - 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 cycles since DTCs cleared Number of warm-up cycles since DTCs cleared Dist Batt Cable Disconnect Accumulated distance from battery cable disconnected - IG OFF Elapsed Time Cumulative time after engine switch off - 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 - Cylinder #5 Misfire Count Cylinder #5 misfire count - Cylinder #6 Misfire Count Cylinder #6 misfire count - Cylinder #7 Misfire Count Cylinder #7 misfire count - Cylinder #8 Misfire Count Cylinder #8 misfire count - All Cylinders Misfire Count All cylinders misfire count - Multi Cylinders Misfire Count Multiple cylinder misfire count - Misfire RPM Engine speed when misfire occurred - Misfire Load Engine load when misfire occurred - 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 - 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.
- 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 engine switch on (IG) to off) When the engine stalls, is difficult to start, or idles roughly Previous Trip Coolant Temp 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 instances of slow engine starts - Low Rev for Eng Start History of low engine speed after engine starts - Minimum Engine Speed Minimum engine speed When the engine stalls, is difficult to start, or idles roughly A/F Learn Value Idle #1 Air fuel ratio learn value of idle area (bank 1) - A/F Learn Value Low #1 Air fuel ratio learn value of low load area (bank 1) - A/F Learn Value Mid1 #1 Air fuel ratio learn value of middle1 load area (bank 1) - A/F Learn Value Mid2 #1 Air fuel ratio learn value of middle2 load area (bank 1) - A/F Learn Value High #1 Air fuel ratio learn value of high load area (bank 1) - A/F Learn Val Low #1 (Dual) Air fuel ratio learn value of low load area (dual, bank 1) - A/F Learn Val Mid1 #1 (Dual) Air fuel ratio learn value of middle1 load area (dual, bank 1) - A/F Learn Val Mid2 #1 (Dual) Air fuel ratio learn value of middle2 load area (dual, bank 1) - A/F Learn Val High #1 (Dual) Air fuel ratio learn value of high load area (dual, bank 1) - A/F Learn Value Idle #2 Air fuel ratio learn value of idle area (bank 2) - A/F Learn Value Low #2 Air fuel ratio learn value of low load area (bank 2) - A/F Learn Value Mid1 #2 Air fuel ratio learn value of middle1 load area (bank 2) - A/F Learn Value Mid2 #2 Air fuel ratio learn value of middle2 load area (bank 2) - A/F Learn Value High #2 Air fuel ratio learn value of high load area (bank 2) - A/F Learn Val Low #2 (Dual) Air fuel ratio learn value of low load area (dual, bank 2) - A/F Learn Val Mid1 #2 (Dual) Air fuel ratio learn value of middle1 load area (dual, bank 2) - A/F Learn Val Mid2 #2 (Dual) Air fuel ratio learn value of middle2 load area (dual, bank 2) - A/F Learn Val High #2 (Dual) Air fuel ratio learn value of high load area (dual, bank 2) - Idle Fuel Cut Idle fuel cut ON: When throttle valve fully closed and engine speed over 2500 rpm FC TAU FC TAU Fuel cut being performed under very light load to prevent incomplete engine combustion Immobiliser Fuel Cut Status of the immobiliser fuel cut - Immobiliser Fuel Cut History Status of the immobiliser fuel cut history - Communication with ECT Status of the communication with ECT - Electrical Load Signal 1 Electrical load signal - Key Unlock Signal Key unlock signal status - Received MIL from ECT MIL status from ECT - Shift Position Sig from ECT Shift position from ECT - A/T Oil Temp from ECT ATF temperature from ECT - SPD (NO) Output shaft speed - SPD (NT) Input shaft speed - ECT Lock Up ECT lock up status - Shift SW Status (P Range) Park/neutral position switch status - Kick Down Switch Status Kick down switch status - Pattern Switch (PWR/M) Pattern switch (PWR) status - Shift SW Status (R Range) Park/neutral position switch status - Shift SW Status (N Range) Park/neutral position switch status - Sports Shift Up SW Sports shift up switch status - Sports Shift Down SW Sports shift down switch status - Sports Mode Selection SW Sports mode select switch status - Shift SW Status (D Range) Park/neutral position switch status - Snow or 2nd Start Mode Pattern switch (SNOW) status -