Toyota 2GR-FE Manual page 208

ES–52
ES
0.5 seconds 0.5 seconds
Freeze frame data which can be read
LABEL
(Intelligent Tester Display)
IGN ADVANCE
CALC LOAD
VEHICLE LOAD
MAF
ENGINE SPD
VEHICLE SPD
COOLANT TEMP
INTAKE AIR
FUEL PRESS
AIR-FUEL PATIO
AMBIENT TEMP
PURGE DENSITY
PURGE FLOW
EVAP PURGE VSV
KNOCK CRRT VAL
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
FREEZE FRAME DATA
1.
DTC was set.
0.5 seconds
2.
A103809E02
Measurement Item/Range
Ignition advance
Calculate load
Vehicle load
Mass air flow volume
Engine speed
Vehicle speed
Engine coolant temperature
Intake air temperature
Fuel pressure
Air-fuel ratio
Ambient temperature
Learning value of purge density
Purge flow
EVAP purge VSV duty ratio
Correction learning value of knocking
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 duplicate the problem even though a
DTC is detected, confirm the freeze frame data.
The ECM records engine conditions as 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 set 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.
LIST OF FREEZE FRAME DATA
-
Calculated load by ECM
-
If value is approximately 0.0 g/s:
•
•
If value is 160.0 g/s or more:
•
-
Speed indicated on speedometer
If value is -40°C (-40°F), sensor circuit open
If value is 140°C (284°F), sensor circuit
shorted
If value is -40°C (-40°F), sensor circuit open
If value is 140°C (284°F), sensor circuit
shorted
-
-
-
-
-
-
-
Diagnostic Note
Mass air flow meter power source circuit
open or shorted
VG circuit open or shorted
E2G circuit open