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DATA MONITOR MODE
=NHEC0034S06
Monitored item [Unit]
ECM
input
signals
Main
signals
Description Remarks
ENG SPEED [rpm] qq
I Indicates the engine speed computed
from the REF signal (120° signal) of the
crankshaft position sensor (REF).
CKPS·RPM (POS)
[rpm]
q
I Indicates the engine speed computed
from the POS signal (1° signal) of the
crankshaft position sensor (POS).
I Accuracy becomes poor if engine
speed drops below the idle rpm.
I If the signal is interrupted while the
engine is running, an abnormal value
may be indicated.
POS COUNT q
I Indicates the number of signal plate
(Flywheel/Drive Plate) cogs (tooth) dur-
ing one revolution of the engine.
MAS A/F SE-B1 [V] qq
I The signal voltage of the mass air flow
sensor is displayed.
I When the engine is stopped, a certain
value is indicated.
COOLAN TEMP/S
[°C] or [°F]
qq
I The engine coolant temperature (deter-
mined by the signal voltage of the
engine coolant temperature sensor) is
displayed.
I When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The engine cool-
ant temperature determined by the
ECM is displayed.
HO2S1 (B1) [V] qq
I The signal voltage of the heated oxy-
gen sensor 1 (front) is displayed.
HO2S1 (B2) [V] qq
HO2S2 (B1) [V] qq
I The signal voltage of the heated oxy-
gen sensor 2 (rear) is displayed.
HO2S2 (B2) [V] qq
HO2S1 MNTR (B1)
[RICH/LEAN]
q
I Display of heated oxygen sensor 1
(front) signal during air-fuel ratio feed-
back control:
RICH ... means the mixture became
“rich”, and control is being affected
toward a leaner mixture.
LEAN ... means the mixture became
“lean”, and control is being affected
toward a rich mixture.
I After turning ON the ignition switch,
“RICH” is displayed until air-fuel mixture
ratio feedback control begins.
I When the air-fuel ratio feedback is
clamped, the value just before the
clamping is displayed continuously.
HO2S1 MNTR (B2)
[RICH/LEAN]
q
HO2S2 MNTR (B1)
[RICH/LEAN]
q
I Display of heated oxygen sensor 2
(rear) signal:
RICH ... means the amount of oxygen
after three way catalyst is relatively
small.
LEAN ... means the amount of oxygen
after three way catalyst is relatively
large.
I When the engine is stopped, a certain
value is indicated.
HO2SW MNTR (B2)
[RICH/LEAN]
q
VHCL SPEED SE
[km/h] or [mph]
qq
I The vehicle speed computed from the
vehicle speed sensor signal is dis-
played.
BATTERY VOLT [V] qq
I The power supply voltage of ECM is
displayed.
THRTL POS SEN [V] qq
I The throttle position sensor signal volt-
age is displayed.
FUEL T/TMP SE
[°C] or [°F]
q
I The fuel temperature judged from the
tank fuel temperature sensor signal
voltage is displayed.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont’d)
EC-95
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