Brand:
Toyota
Model Name:
4Runner GRN210 215 UZN210 215
Manual:
Repair Manual
Section:
1Gr-Fe Engine Control System
Title:
Sfi System
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 intelligent tester, 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
- 3 data sets before the DTC was set
LIST OF FREEZE FRAME DATA
| LABEL (Intelligent Tester Display) | Measurement Item | Diagnostic Note |
| Freeze DTC | Freeze DTC | - |
| 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:
|
| 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 | - |
| PURGE DENSITY | Learning value of purge density | - |
| PURGE FLOW | Purge flow | - |
| EVAP PURGE VSV | EVAP purge VSV duty ratio | - |
| 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 Accelerator Pedal Position (APP) No. 1 | - |
| ACCEL POS #2 | Absolute APP No. 2 | - |
| THROTTLE POS | Throttle position | Read value with ignition switch on (Do not start engine) |
| THROTTLE POS | Throttle sensor positioning | Read value with ignition switch on (Do not start engine) |
| THROTTLE POS#2 | Throttle sensor positioning#2 | - |
| THROTTLE MOT | Throttle motor | - |
| O2S B1 S2 | Heated oxygen sensor output | Performing INJ VOL or A/F CONTROL function of ACTIVE TEST enables technician to check voltage output of sensor |
| AFS B1 S1 | A/F sensor output | Performing INJ VOL or A/F CONTROL function of ACTIVE TEST enables technician to check voltage output of sensor |
| TOTAL FT #1 | 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 |
| FUEL SYS #1 | Fuel system status (bank 1) |
|
| O2FT B1 S2 | Fuel trim at heated oxygen sensor | Same as SHORT FT #1 |
| AF FT B1 S1 | Fuel trim at A/F sensor | - |
| CAT TEMP B1 S1 | Catalyst temperature | - |
| CAT TEMP B1 S2 | Catalyst temperature | - |
| INI COOL TEMP | Initial engine coolant temperature | - |
| INI INTAKE TEMP | Initial intake air temperature | - |
| INJ VOL | Injection volume | - |
| STARTER SIG | Starter signal | - |
| PS SW | Power steering signal | - |
| PS SIGNAL | Power steering signal (history) | This signal status usually ON until ignition switch turned off |
| CTP SW | Closed throttle position switch | - |
| A/C SIG | A/C signal | - |
| ELECT LOAD SIG | Electrical load signal | - |
| STOP LIGHT SW | Stop light switch | - |
| BATTERY VOLTAGE | Battery voltage | - |
| ATM PRESSURE | Atmospheric pressure | - |
| EVAP (Purge) VSV | EVAP purge VSV | - |
| FUEL PUMP/SPD | Fuel pump speed status | VSV for EVAP controlled by ECM (ground side duty control) |
| VVT CTRL B1 | VVT control status | - |
| VACUUM PUMP | Key-off EVAP system pump status | - |
| EVAP VENT VAL | Key-off EVAP system vent valve status | - |
| TC/TE1 | TC and TE1 terminals of DLC3 | - |
| VVTL AIM ANGL #1 | VVT aim angle | - |
| VVT CHNG ANGL #1 | VVT change angle | - |
| VVT OCV DUTY B1 | VVT OCV operation duty | - |
| FC IDL | Idle fuel cut | ON: when throttle valve fully closed and engine speed over 1,500 rpm |
| FC TAU | FC TAU | The fuel cut is being performed under very light load to prevent the 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 ALL | All cylinder misfire rate | Displayed only during idling |
| MISFIRE RPM | Misfire RPM | - |
| MISFIRE LOAD | Misfire 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 after DTC cleared | - |
| WU CYC DTC CLEAR | Warm-up cycle after DTC cleared | - |
| MODEL CODE | Identifying the model code: | GRN21# |
| FAN MOTOR | Electric fan motor | - |
| VAPOR PRESS | Vapor pressure | Pressure inside of fuel tank as read by the vapor pressure sensor |
| ENG OIL PRES SW | Engine oil pressure switch signal | Always ON while engine is running |
| ENGINE TYPE | Identifying the engine type | 1GR |
| CYLINDER NUMBER | Identifying the cylinder number | 6 |
| DESTINATION | Identifying the destination | A (America) |
| MODEL YEAR | Identifying the model year | 200# |
| SYSTEM | Identifying the engine system | GASLIN (gasoline engine) |