Engine Hybrid System. Corolla. Zre142 Aze141
2Zr-Fe Engine Control. Corolla. Zre142 Aze141
Sfi System -- 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 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 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 the malfunction. The data may assist in identifying the cause of the malfunction, and judging whether it was temporary or not.
| 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 and ECT / 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.
| LIST OF FREEZE FRAME DATA |
*2: Manual transaxle models only
*3: Except for Mexico models
| Tester Display | Measurement Item | Diagnostic Note |
| Vehicle Speed | Vehicle speed | Speed indicated on speedometer |
| Engine Speed | Engine speed | - |
| Calculate Load | Calculated load by ECM | - |
| Vehicle Load | Vehicle load | Load percentage in terms of maximum intake air flow amount |
| MAF | Air flow rate from mass air flow meter | If value approximately 0.0 gm/s:
|
| Atmosphere Pressure | Atmosphere pressure | - |
| Coolant Temp | Engine coolant temperature |
|
| Intake Air | Intake air temperature |
|
| Engine Run Time | Engine run 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 % | Accelerator pedal position No. 1 | - |
| Accel Sens. No. 2 Volt % | Accelerator pedal position No. 2 | - |
| Throttle Sensor Volt % | Throttle sensor positioning | Recognition value for throttle opening angle on ECM Read value with ignition switch ON |
| Throttl Sensor #2 Volt % | Absolute throttle sensor positioning #2 | Recognition value for throttle opening angle on ECM Read value with ignition switch ON |
| Throttle Sensor Position | Throttle sensor positioning | Recognition value for throttle opening angle on ECM Read value with ignition switch ON |
| 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 | 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 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 | Electric load feedback value | When the engine stalls, is difficult to start, or idles roughly |
| Air Conditioner FB Val | Air conditioner 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*1 | 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 |
|
| Injector (Port) | Injection direction for cylinder 1 | - |
| Injection Volum (Cylinder1) | Injection volume (Cylinder 1) | Quantity of fuel injection volume for 10 times |
| Fuel Pump/Speed Status | Fuel pump/status | - |
| Vacuum Pump*3 | Key-off EVAP system leak detection pump status | - |
| Current Fuel Type | Current fuel type | - |
| EVAP (Purge) VSV | EVAP (Purge) VSV control duty | Order signal from ECM |
| Evap Purge Flow | Ratio of evaporative purge flow to intake air volume | - |
| Purge Density Learn Value | Learning value of purge density | - |
| EVAP System Vent Valve*3 | 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 | Short-term fuel trim associated with bank 1 sensor 1 | - |
| 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 | Value becomes higher when fuel-cut executed under high engine speed |
| A/F Heater Duty #1 | Air fuel ratio sensor heater duty ratio for bank 1 sensor 1 | - |
| O2S B1S2 | Heated oxygen sensor output voltage for bank 1 sensor 2 | - |
| O2S Impedance B1S2 | Sub heated oxygen sensor impedance (bank 1 sensor 2) | - |
| O2 Heater B1S2 | Heated oxygen sensor heater (bank 1 sensor 2) | - |
| O2Heater Curr Val B1S2 | Heated oxygen sensor current (bank 1 sensor 2) | - |
| Short FT #1 | Short-term fuel trim of bank 1 | Short-term fuel compensation used to maintain air fuel ratio at stoichiometric air fuel ratio |
| Long FT #1 | Long-term fuel trim of bank 1 | Overall fuel compensation carried out in long-term to compensate continual deviation of short-term fuel trim from central value |
| Total FT #1 | Total fuel trim | - |
| Fuel System Status #1 | Fuel system status (bank 1) |
|
| Fuel System Status #2 | Fuel system status (bank 2) |
|
| IGN Advance | Ignition timing advance for cylinder 1 | - |
| Knock Feedback Value | Feedback value of knocking | - |
| Knock Correct Learn Value | Correction learning value of knocking | - |
| Idle Spark Advan Ctrl #1 | Ignition timing advance value (for No. 1 cylinder) | When the engine stalls, is difficult to start, or idles roughly |
| Idle Spark Advan Ctrl #2 | Ignition timing advance value (for No. 2 cylinder) | When the engine stalls, is difficult to start, or idles roughly |
| Idle Spark Advan Ctrl #3 | Ignition timing advance value (for No. 3 cylinder) | When the engine stalls, is difficult to start, or idles roughly |
| Idle Spark Advan Ctrl #4 | Ignition timing advance value (for No. 4 cylinder) | When the engine stalls, is difficult to start, or idles roughly |
| Actual VVT Angle #1 | VVT displacement angle for bank 1 | - |
| Actual VVT Ex Angle #1 | Exhaust VVT displacement angle for bank 1 | - |
| VVT Control Status #1 | VVT control (bank 1) status | - |
| VVT Advance Fail | Status of VVT advance fail | - |
| Catalyst Temp B1S1 | Catalyst temperature (associated sensor 1) | - |
| Catalyst Temp B1S2 | Catalyst temperature (associated sensor 2) | - |
| Starter Signal | Starter signal | - |
| Starter Control | Starter control | - |
| Power Steering Signal | Power steering switch signal | - |
| Starter Relay | Starter relay | - |
| ACC Relay | ACC relay | - |
| Neutral Position SW Signal*1 | Neutral position switch signal | - |
| Clutch Switch*2 | Clutch switch status | - |
| Clutch Start SW*2 | Clutch start switch status | - |
| Stop Light Switch | Stop light switch status | - |
| A/C Signal | A/C signal | - |
| Closed Throttle Position SW | Closed throttle position switch | - |
| Fuel Cut Condition | Fuel cut condition ON or OFF | - |
| Immobiliser Communication | Immobiliser communication | - |
| TC Terminal | TC terminal status | - |
| Time after DTC Cleared | Time since DTCs cleared | - |
| Distance from DTC Cleared | Distance traveled since DTCs 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*3 | Cumulative time after ignition switch off | - |
| TC and TE1 | TC and CG (TE1) terminals of DLC3 | - |
| Ignition Trig. Count | Ignition counter to calculated misfire count | - |
| Cylinder #1 Misfire Count | Misfire count for cylinder 1 | - |
| Cylinder #2 Misfire Count | Misfire count for cylinder 2 | - |
| Cylinder #3 Misfire Count | Misfire count for cylinder 3 | - |
| Cylinder #4 Misfire Count | Misfire count for 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 | Misfire detection margin |
| 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 from off to ON | When the engine stalls, is difficult to start, or idles roughly |
| Run Dist of Previous Trip | Distance traveled during previous trip |
|
| Engine Starting Time | Engine run time (elapsed time from ignition switch ON 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 | When the engine stalls, is difficult to start, or idles roughly |
| Low Rev for Eng Start | History of low engine speed after engine starts | 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 (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) | - |
| Electric Fan Motor | Electric cooling fan motor | - |
| Brake Override System | Brake override system status | - |
| Idle Fuel Cut | Fuel cut idle | 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 engine combustion from becoming incomplete |
| Immobiliser Fuel Cut | Status of the immobiliser fuel cut | - |
| Immobiliser Fuel Cut History | Status of the immobiliser fuel cut history | - |
| 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 (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) | - |