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Freeze frame data
item*
Description
FUEL SYS-B1
쐌 “Fuel injection system status” at the moment a malfunction is detected is displayed.
쐌 One mode in the following is displayed.
“MODE 2”: Open loop due to detected system malfunction
“MODE 3”: Open loop due to driving conditions (power enrichment, deceleration enrichment)
“MODE 4”: Closed loop - using oxygen sensor(s) as feedback for fuel control
“MODE 5”: Open loop - has not yet satisfied condition to go to closed loop
CAL/LD VALUE [%] 쐌 The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [°C]
or [°F]
쐌 The engine coolant temperature at the moment a malfunction is detected is displayed.
S-FUEL TRIM-B1 [%]
쐌 “Short-term fuel trim” at the moment a malfunction is detected is displayed.
쐌 The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel
schedule.
L-FUEL TRIM-B1 [%]
쐌 “Long-term fuel trim” at the moment a malfunction is detected is displayed.
쐌 The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule
than short-term fuel trim.
ENGINE SPEED
[rpm]
쐌 The engine speed at the moment a malfunction is detected is displayed.
VEHICLE SPEED
[km/h] or [mph]
쐌 The vehicle speed at the moment a malfunction is detected is displayed.
ABSOL TH-P/S [%] 쐌 The throttle valve opening angle at the moment a malfunction is detected is displayed.
B/FUEL SCHDL
[msec]
쐌 The base fuel schedule at the moment a malfunction is detected is displayed.
INT/A TEMP SE [°C]
or [°F]
쐌 The intake air temperature at the moment a malfunction is detected is displayed.
*: The items are the same as those of 1st trip freeze frame data.
DATA MONITOR MODE
NGEC0034S06
Monitored item [Unit]
ECM
input
signals
Main
signals
Description Remarks
ENG SPEED [rpm] 쎻쎻
쐌 Indicates the engine speed computed
from the REF signal (180° signal) of the
camshaft position sensor.
쐌 Accuracy becomes poor if engine
speed drops below the idle rpm.
쐌 If the signal is interrupted while the
engine is running, an abnormal value
may be indicated.
MAS A/F SE-B1 [V] 쎻쎻
쐌 The signal voltage of the mass air flow
sensor is displayed.
쐌 When the engine is stopped, a certain
value is indicated.
B/FUEL SCHDL [msec] 쎻
쐌 “Base fuel schedule” indicates the fuel
injection pulse width programmed into
ECM, prior to any learned on board
correction.
A/F ALPHA-B1 [%]
쐌 Indicates the mean value of the air-fuel
ratio feedback correction factor per
cycle.
쐌 When the engine is stopped, a certain
value is indicated.
쐌 This data also includes the data for
the air-fuel ratio learning control.
COOLAN TEMP/S
[°C] or [°F]
쎻쎻
쐌 The engine coolant temperature (deter-
mined by the signal voltage of the
engine coolant temperature sensor) is
displayed.
쐌 When the engine coolant temperature
sensor is open or short-circuited,
ECM enters fail-safe mode. The
engine coolant temperature deter-
mined by the ECM is displayed.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
KA24DE
CONSULT-II (Cont’d)
EC-90
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