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 of the cause of the malfunction, and in 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 Trouble Code Freeze DTC - 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 value approximately 0.0 g/sec.: - Mass air flow meter power source circuit open or short
- VG circuit open or short
If value 160.0 g/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 shortedAmbient Temperature Ambient temperature - Engine 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 - Throttle Sensor Volt % Throttle position Read value with engine switch on (IG) (Do not start engine) Throttle Sensor #2 Volt % Throttle sensor positioning #2 - Throttle Sensor Position Throttle sensor positioning Read value with engine switch on (IG) (Do not start engine) Throttle Motor DUTY Throttle actuator - Fuel Press Fuel Pressure - FPrs diff / Relief Vlv op Fuel pressure difference between fuel relief valve close and fuel relief valve open - Injector (Port) Injection period of No. 1 cylinder - Injection Volume (Cylinder 1) Injection volume - Fuel Pump Speed Control Fuel pump speed control 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) - High Pres FP Duty Fuel pump duty (D4) - HP FP Discharge Rate High pressure fuel pump discharge rate - 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 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 - Fuel Pressure Relief Value Target fuel pressure - Fuel Filler Opener Fuel filler door status - Fuel Vapor-Containment Valve Fuel vapor-containment valve status - Fuel Lid Fuel lid courtesy switch status - Fuel Lid Switch Fuel filler door opener switch status - EVAP Purge VSV Purge VSV - Target Air-Fuel Ratio Air-fuel ratio - AF Lambda B1S1 Fuel trim at A/F sensor - AF Lambda B2S1 Fuel trim at A/F sensor - AF FT B1 S1 Fuel trim at A/F sensor - AF FT B2 S1 Fuel trim at A/F sensor - AFS Voltage B1 S1 A/F 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 sensor AFS Voltage B2 S1 A/F 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 sensor AFS Current B1 S1 A/F sensor current (bank 1 sensor 1) Performing Control the Injection Volume or Control the Injection Volume for A/F Sensor function of Active Test enables technician to check current output of sensor AFS Current B2 S1 A/F sensor current (bank 2 sensor 1) Performing Control the Injection Volume or Control the Injection Volume for A/F Sensor function of Active Test enables technician to check current output of sensor O2S B1 S2 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 sensor O2FT B1 S2 Fuel trim at heated oxygen sensor - O2S B2 S2 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 sensor O2FT B2 S2 Fuel trim at heated oxygen sensor - O2S Impedance B1 S2 Sub heated oxygen sensor impedance - O2S Impedance B2 S2 Sub heated oxygen sensor impedance - 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 valve 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 valve 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 heated oxygen 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 heated oxygen 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 heated oxygen 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 heated oxygen 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 - VVT Control Status #1 VVT control status (bank 1) - VVT Control Status #2 VVT control status (bank 2) - VVT Aim Angle #1 VVT aim angle (bank 1) - VVT Change Angle #1 VVT change angle (bank 1) - VVT OCV Duty #1 VVT OCV operation duty (bank 1) - VVT Aim Angle #2 VVT aim angle (bank 2) - VVT Change Angle #2 VVT change angle (bank 2) - VVT OCV Duty #2 VVT OCV operation duty (bank 2) - VVT Ex Hold Lrn Val #1 VVT exhaust hold duty ratio learning value (bank 1) - VVT Ex Chg Angle #1 VV exhaust change angle (bank 1) - VVT Ex OCV Duty #1 VVT exhaust OCV duty (bank 1) - VVT Ex Hold Lrn Val #2 VVT exhaust hold duty ration learning value (bank 2) - VVT Ex Chg Angle #2 VVT exhaust change angle (bank 2) - VVT Ex OCV Duty #2 VVT exhaust OCV duty (bank 2) - Catalyst Temp (B1 S1) Catalyst temperature - Catalyst Temp (B2 S1) Catalyst temperature - Catalyst Temp (B1 S2) Catalyst temperature - Catalyst Temp (B2 S2) Catalyst temperature - Closed Throttle Position SW Closed throttle position switch - Engine Oil Pressure SW Engine oil pressure switch signal Always ON while engine is running 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 - Cylinder #1 Misfire Count Cylinder #1 misfire count Displayed in only idling Cylinder #2 Misfire Count Cylinder #2 misfire count Displayed in only idling Cylinder #3 Misfire Count Cylinder #3 misfire count Displayed in only idling Cylinder #4 Misfire Count Cylinder #4 misfire count Displayed in only idling Cylinder #5 Misfire Count Cylinder #5 misfire count Displayed in only idling Cylinder #6 Misfire Count Cylinder #6 misfire count Displayed in only idling All Cylinders Misfire Count All cylinder misfire count Displayed in only idling Misfire RPM Misfire RPM - Misfire Load Misfired load - Misfire Margin Misfire monitoring - Electric Fan Motor Electric fan motor status - Idle Fuel Cut Idle fuel cut ON: when throttle valve fully closed and engine speed over 1500 RPM FC TAU Fuel cut during very light load Fuel cut being performed under very light load to prevent engine combustion from becoming incomplete Requested Engine Torque Requested engine torque Flag information for hybrid vehicle HV Target Engine Speed HV target engine speed Flag information for hybrid vehicle Actual Engine Torque Actual engine torque Flag information for hybrid vehicle Estimated Engine Torque Estimated engine torque Flag information for hybrid vehicle Engine Run Time Engine run time Flag information for hybrid vehicle Request Engine Run Time Request engine run time Flag information for hybrid vehicle Judge Time Engine Ignition Judgment time for complete explosion of ignition Flag information for hybrid vehicle Judge Time Engine Output Judgment time for time until engine output Flag information for hybrid vehicle Fuel Level Fuel level Flag information for hybrid vehicle ISC Learning ISC learning Flag information for hybrid vehicle F/C for Engine Stop Req Fuel cut for engine stop request Flag information for hybrid vehicle Engine Independent Engine independent operation Flag information for hybrid vehicle Racing Operation Racing operation Flag information for hybrid vehicle Request Warm-up Request engine warm up Flag information for hybrid vehicle Engine Independent Control Engine independently control operation Flag information for hybrid vehicle ISC Learning Value ISC learning value Flag information for hybrid vehicle