Freeze Frame Data
- DESCRIPTION
Freeze frame data records the engine conditions (fuel system, calculated load, engine coolant temperature, fuel trim, engine speed, vehicle speed, etc.) when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was Lean or Rich, and other data from the time the malfunction occurred.
HINT:
If it is not possible 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 intelligent tester, 5 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 sets 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 the malfunction occurred. The data may assist in identifying the cause of the malfunction, and in judging whether it was temporary or not.
- LIST OF FREEZE FRAME DATA
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
LIST OF FREEZE FRAME DATALABEL (Intelligent Tester Display) Measurement Item Diagnostic Note INJECTOR Injector - IGN ADVANCE Ignition advance - CALC LOAD Calculate load Calculated load by ECM VEHICLE LOAD Vehicle load - MAF Mass air flow volume If value approximately 0.0 g/s: Mass air flow meter power source circuit open or short VG circuit open or short If value 160.0 g/s or more: E2G circuit open ENGINE SPD Engine speed - VEHICLE SPD Vehicle speed Speed indicated on speedometer COOLANT TEMP Engine coolant temperature If value -40°C (-40°F), sensor circuit open If value 140°C (284°F), sensor circuit shorted INTAKE AIR Intake air temperature If value -40°C (-40°F), sensor circuit open If value 140°C (284°F), sensor circuit shorted AIR- FUEL RATIO Air-fuel ratio - AMBIENT TEMP Ambient temperature - PURGE DENSITY Learning value of purge density - PURGE FLOW Purge flow - EVAP PURGE VSV VSV (for EVAP) duty ratio - VAPOR PRESSURE Vapor pressure - KNOCK CRRT VAL Correction learning value of knocking - KNOCK FB VAL Feedback value of knocking - EVAP VAPOR PRES EVAP vapor pressure - ACCEL POS #1 Absolute No. 1 accelerator pedal position - ACCEL POS #2 Absolute No. 2 accelerator pedal position - THROTTLE POS Throttle position Read value with engine switch on (IG) (do not start engine) THROTTLE POS Throttle sensor positioning Read value with engine switch on (IG) (do not start engine) THROTTLE POS #2 Throttle sensor positioning #2 - THROTTLE MOT Throttle motor - O2S B1S1 Heated oxygen sensor output Performing IN J VOL or A/F CONTROL function of ACTIVE TEST enables technician to check output voltage of sensor O2S B1S2 Heated oxygen sensor output Performing INJ VOL or A/F CONTROL function of ACTIVE TEST enables technician to check output voltage of sensor O2S B2S1 Heated oxygen sensor output Performing INJ VOL or A/F CONTROL function of ACTIVE TEST enables technician to check output voltage of sensor 02S B2S2 Heated oxygen sensor output Performing INJ VOL or A/F CONTROL function of ACTIVE TEST enables technician to check output voltage of sensor TOTAL FT #1 Total fuel trim - TOTAL FT #2 Total fuel trim - 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 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 FUEL SYS #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
- OL DRIVE: Open loop due to driving conditions (fuel enrichment)
- OL FAULT: Open loop due to detected system fault
- CL FAULT: Closed loop but heated oxygen sensor, which is used for fuel control malfunctioning
FUEL SYS #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
- OL DRIVE: Open loop due to driving conditions (fuel enrichment)
- OL FAULT: Open loop due to detected system fault
- CL FAULT: Closed loop but heated oxygen sensor, which is used for fuel control malfunctioning
O2FT B1S1 Fuel trim at heated oxygen sensor Same as SHORT FT #1 O2FT B1S2 Fuel trim at heated oxygen sensor Same as SHORT FT #1 O2FT B2S1 Fuel trim at heated oxygen sensor Same as SHORT FT #1 O2FT B2S2 Fuel trim at heated oxygen sensor Same as SHORT FT #1 O2 LR B1S1 Heated oxygen sensor response time (lean to rich) - O2 LR B2S1 Heated oxygen sensor response time (lean to rich) - O2 RL B1S1 Heated oxygen sensor response time (rich to lean) - O2 RL B2S1 Heated oxygen sensor response time (rich to lean) - CAT TEMP B1S1 Catalyst temperature - CAT TEMP B2S1 Catalyst temperature - CAT TEMP B1S2 Catalyst temperature - CAT TEMP B2S2 Catalyst temperature - INI COOL TEMP Initial engine coolant temperature - INI INTAKE TEMP Initial intake air temperature - INJ VOL Injection volume - ACC RELAY ACC relay - STARTER RELAY Starter relay - STARTER SIG Starter signal - STARTER CONTROL Starter control - CTP SW Closed throttle position switch - A/C SIG A/C signal - PNP SW (NSW) Neutral position switch signal - ELECT LOAD SIG Electrical load signal - STOP LIGHT SW Stop light switch - BATTERY VOLTAGE Battery voltage - ATM PRESSURE Atmospheric pressure - FUEL PMP SP CTL Fuel pump speed control status - ACIS VSV Vacuum switching valve (for ACIS) - VVT CTRL B2 VVT control status (bank 2) - EVAP (Purge) VSV VSV (for EVAP) - FUEL PUMP / SPD Fuel pump/speed status - VVT CTRL B1 VVT control status (bank 1) - FAN MOTOR Electric fan motor - TANK BYPASS VSV Tank bypass VSV - TC/TE1 TC and TE1 terminal of DLC3 - FC IDL PROHIBIT Idle fuel cut prohibit - VVT AIM ANGL#1 VVT aim angle (bank 1) - VVT CHNG ANGL#1 VVT change angle (bank 1) - VVT OCV DUTY B1 VVT OCV operation duty - VVT AIM ANGL#2 VVT aim angle (bank 2) - VVT CHNG ANGL#2 VVT change angle (bank 2) - VVT OCV DUTY B2 VVT OCV operation duty (bank 2) - FC IDL Idle fuel cut ON: when throttle valve fully closed and engine speed over 1,500 rpm FC TAU FC TAU Fuel cut being performed under very light load to prevent engine combustion from becoming incomplete IGNITION Ignition - CYL #1 Cylinder #1 misfire rate Displayed only during idling CYL #2 Cylinder #2 misfire rate Displayed only during idling CYL #3 Cylinder #3 misfire rate Displayed only during idling CYL #4 Cylinder #4 misfire rate Displayed only during idling CYL #5 Cylinder #5 misfire rate Displayed only during idling CYL #6 Cylinder #6 misfire rate Displayed only during idling CYL #7 Cylinder #7 misfire rate Displayed only during idling CYL #8 Cylinder #8 misfire rate Displayed only during Idling CYL ALL All cylinder misfire rate Displayed only during idling MISFIRE RPM Misfire RPM - MISFIRE LOAD Misfired load - MISFIRE MARGIN Misfire monitoring - ENG RUN TIME Accumulated engine running time - TIME DTC CLEAR Cumulative time after DTC cleared - DIST DTC CLEAR Accumulated distance from DTC cleared - WU CYC DTC CLEAR Warm-up cycle after DTC cleared - MODEL CODE Identifying the model code UZS19# ENGINE TYPE Identifying the engine type 3UZ-FE CYLINDER NUMBER Identifying the cylinder number 8 DESTINATION Identifying the destination A (America) MODEL YEAR Identifying the model year 200#