Nissan Note [1315/1872] Ec 1315

Nissan Note [1315/1872] Ec 1315
TROUBLE DIAGNOSIS
EC-1315
[HR (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
COOLAN TEMP/S
[°C] or [°F]
××
The engine coolant temperature (determined
by the signal voltage of the engine coolant
temperature sensor) is displayed.
When the engine coolant temper-
ature sensor is open or short-
circuited, ECM enters fail-safe
mode. The engine coolant tem-
perature determined by the ECM
is displayed.
HO2S1 (B1) [V] ××
The signal voltage of the heated oxygen sen-
sor 1 is displayed.
HO2S2 (B1) [V] ×
The signal voltage of the heated oxygen sen-
sor 2 is displayed.
HO2S1 MNTR (B1)
[RICH/LEAN]
××
Display of heated oxygen sensor 1 signal dur-
ing air-fuel ratio feedback control:
RICH: means the mixture became “rich”, and
control is being affected toward a leaner mix-
ture.
LEAN: means the mixture became “lean”, and
control is being affected toward a rich mixture.
After turning ON the ignition
switch, “RICH” is displayed until
air-fuel mixture ratio feedback
control begins.
When the air-fuel ratio feedback
is clamped, the value just before
the clamping is displayed contin-
uously.
HO2S2 MNTR (B1)
[RICH/LEAN]
×
Display of heated oxygen sensor 2 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.
When the engine is stopped, a
certain value is indicated.
VHCL SPEED SE
[km/h] or [mph]
××
The vehicle speed computed from the vehicle
speed signal is displayed.
BATTERY VOLT [V] ××
The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V] ××
The accelerator pedal position sensor signal
voltage is displayed.
ACCEL SEN 2 signal is con-
verted by ECM internally. Thus, it
differs from ECM terminal voltage
signal.
ACCEL SEN 2 [V] ×
THRTL SEN 1 [V] ××
The throttle position sensor signal voltage is
displayed.
THRTL SEN 2 signal is con-
verted by ECM internally. Thus, it
differs from ECM terminal voltage
signal.
THRTL SEN 2 [V] ×
INT/ATEMPSE
[°C] or [°F]
××
The intake air temperature (determined by the
signal voltage of the intake air temperature
sensor) is indicated.
START SIGNAL
[ON/OFF]
××
Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals of
engine speed and battery voltage.
After starting the engine, [OFF] is
displayed regardless of the
starter signal.
CLSD THL POS
[ON/OFF]
××
Indicates idle position [ON/OFF] computed by
the ECM according to the accelerator pedal
position sensor signal.
AIR COND SIG
[ON/OFF]
××
Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condi-
tioner signal.
P/N POSI SW
[ON/OFF]
××
Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.
PW/ST SIGNAL
[ON/OFF]
××
[ON/OFF] condition of the power steering sys-
tem (determined by the signal sent from EPS
control unit) is indicated.
Monitored item
[Unit]
ECM
INPUT
SIGNALS
MAIN
SIG-
NALS
Description Remarks

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