Nissan Cube. Instruction — part 307
EC-114
< SYSTEM DESCRIPTION >
[MR18DE]
DIAGNOSIS SYSTEM (ECM)
Monitored item
Unit
Description
Remarks
ENG SPEED
rpm
• Indicates the engine speed computed from the signal
of the crankshaft position sensor (POS) and camshaft
position sensor (PHASE).
• Accuracy becomes poor if engine
speed drops below the idle rpm.
• If the signal is interrupted while the
engine is running, an abnormal
value may be indicated.
MAS A/F SE-B1
V
• The signal voltage of the mass air flow sensor is dis-
played.
• When the engine is stopped, a
certain value is indicated.
• When engine is running specifica-
tion range is indicated in “SPEC”.
B/FUEL SCHDL
ms
• “Base fuel schedule” indicates the fuel injection pulse
width programmed into ECM, prior to any learned on
board correction.
• When engine is running specifica-
tion range is indicated in “SPEC”.
A/F ALPHA-B1
%
• The mean value of the air-fuel ratio feedback correc-
tion factor per cycle is indicated.
• When the engine is stopped, a
certain value is indicated.
• This data also includes the data for
the air-fuel ratio learning control.
• When engine is running specifica-
tion range is indicated in “SPEC”.
COOLANT TEMP/S
°
C or
°
F
• The engine coolant temperature (determined by the
signal voltage of the engine coolant temperature sen-
sor) is displayed.
• When the engine coolant tempera-
ture sensor is open or short-cir-
cuited, ECM enters fail-safe mode.
The engine coolant temperature
determined by the ECM is dis-
played.
A/F SEN1 (B1)
V
• The A/F signal computed from the input signal of the
air fuel ratio (A/F) sensor 1 is displayed.
HO2S2 (B1)
V
• The signal voltage of the heated oxygen sensor 2 is
displayed.
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 sent from combination meter is displayed.
BATTERY VOLT
V
• The power supply voltage of ECM is displayed.
ACCEL SEN 1
V
• The accelerator pedal position sensor signal voltage is
displayed.
• ACCEL SEN 2 signal is converted
by ECM internally. Thus, it differs
from ECM terminal voltage signal.
ACCEL SEN 2
TP SEN 1-B1
V
• The throttle position sensor signal voltage is dis-
played.
• TP SEN 2-B1 signal is converted
by ECM internally. Thus, it differs
from ECM terminal voltage signal.
TP SEN 2-B1
FUEL T/TMP SE
°
C or
°
F
• The fuel temperature (determined by the signal volt-
age of the fuel tank temperature sensor) is displayed.
INT/A TEMP SE
°
C or
°
F
• The intake air temperature (determined by the signal
voltage of the intake air temperature sensor) is indicat-
ed.
EVAP SYS PRES
V
• The signal voltage of EVAP control system pressure
sensor is displayed.
FUEL LEVEL SE
V
• The signal voltage of the fuel level sensor is displayed.
START SIGNAL
ON/OFF
• Indicates start signal status [ON/OFF] computed 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 ECM
according to the accelerator pedal position sensor sig-
nal.
DIAGNOSIS SYSTEM (ECM)
EC-115
< SYSTEM DESCRIPTION >
[MR18DE]
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AIR COND SIG
ON/OFF
• Indicates [ON/OFF] condition of the air conditioner
switch determined by the air conditioner ON signal.
P/N POSI SW
ON/OFF
• Indicates [ON/OFF] condition from the park/neutral
position (PNP) switch signal (M/T models) or Trans-
mission range switch signal (CVT models).
PW/ST SIGNAL
ON/OFF
• [ON/OFF] condition of the power steering system (de-
termined by the signal sent from EPS control unit) is
indicated.
LOAD SIGNAL
ON/OFF
• Indicates [ON/OFF] condition from the electrical load
signal.
ON: Rear window defogger switch is ON and/or light-
ing switch is in 2nd position.
OFF: Both rear window defogger switch and lighting
switch are OFF.
IGNITION SW
ON/OFF
• Indicates [ON/OFF] condition from ignition switch sig-
nal.
HEATER FAN SW
ON/OFF
• Indicates [ON/OFF] condition from the heater fan
switch signal.
BRAKE SW
ON/OFF
• Indicates [ON/OFF] condition from the stop lamp
switch signal.
INJ PULSE-B1
msec
• Indicates the actual fuel injection pulse width compen-
sated by ECM according to the input signals.
• When the engine is stopped, a
certain computed value is indicat-
ed.
IGN TIMING
BTDC
• Indicates the ignition timing computed by ECM ac-
cording to the input signals.
• When the engine is stopped, a
certain value is indicated.
CAL/LD VALUE
%
• “Calculated load value” indicates the value of the cur-
rent air flow divided by peak air flow.
MASS AIRFLOW
g/s
• Indicates the mass air flow computed by ECM accord-
ing to the signal voltage of the mass air flow sensor.
PURG VOL C/V
%
• Indicates the EVAP canister purge volume control so-
lenoid valve control value computed by the ECM ac-
cording to the input signals.
• The opening becomes larger as the value increases.
INT/V TIM(B1)
°
CA
• Indicates [
°
CA] of intake camshaft advance angle.
INT/V SOL(B1)
%
• The control value of the intake valve timing control so-
lenoid valve (determined by ECM according to the in-
put signals) is indicated.
• The advance angle becomes larger as the value in-
creases.
AIR COND RLY
ON/OFF
• The air conditioner relay control condition (determined
by ECM according to the input signals) is indicated.
FUEL PUMP RLY
ON/OFF
• Indicates the fuel pump relay control condition deter-
mined by ECM according to the input signals.
VENT CONT/V
ON/OFF
• The control condition of the EVAP canister vent control
valve (determined by ECM according to the input sig-
nals) is indicated.
ON: Closed
OFF: Open
THRTL RELAY
ON/OFF
• Indicates the throttle control motor relay control condi-
tion determined by the ECM according to the input sig-
nals.
COOLING FAN
HI/LOW/
OFF
• Indicates the condition of the cooling fan (determined
by ECM according to the input signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop
Monitored item
Unit
Description
Remarks
EC-116
< SYSTEM DESCRIPTION >
[MR18DE]
DIAGNOSIS SYSTEM (ECM)
HO2S2 HTR (B1)
ON/OFF
• Indicates [ON/OFF] condition of heated oxygen sen-
sor 2 heater determined by ECM according to the in-
put signals.
I/P PULLY SPD
rpm
• Indicates the engine speed computed from the input
shaft revolution signal.
VEHICLE SPEED
km/h or mph
• The vehicle speed computed from the vehicle speed
signal sent from TCM is displayed.
IDL A/V LEARN
YET/CMPLT
• Display the condition of Idle Air Volume Learning
YET: Idle air volume learning has not been performed
yet.
CMPLT: Idle air volume learning has already been per-
formed successfully.
TRVL AFTER MIL
km or mile
• Distance traveled while MIL is activated.
A/F S1 HTR(B1)
%
• Air fuel ratio (A/F) sensor 1 heater control value com-
puted by ECM according to the input signals.
• The current flow to the heater becomes larger as the
value increases.
AC PRESS SEN
V
• The signal voltage from the refrigerant pressure sen-
sor is displayed.
A/F ADJ-B1
—
• Indicates the correction of factor stored in ECM. The
factor is calculated from the difference between the
target air-fuel ratio stored in ECM and the air-fuel ratio
calculated from A/F sensor 1 signal.
BUT CUR SEN
mV
• The signal voltage of battery current sensor is dis-
played.
ALT DUTY SIG
ON/OFF
• The control condition of the power generation voltage
variable control (determined by ECM according to the
input signals) is indicated.
ON: Power generation voltage variable control is ac-
tive.
OFF: Power generation voltage variable control is in-
active.
ALT DUTY
%
• Indicates the duty ratio of the power generation com-
mand value. The ratio is calculated by ECM based on
the battery current sensor signal.
VHCL SPEED SE
km/h or mph
• The vehicle speed computed from the vehicle speed
signal sent from combination meter is displayed.
SET VHCL SPD
km/h or mph
• The preset vehicle speed is displayed.
MAIN SW
ON/OFF
• Indicates [ON/OFF] condition from MAIN switch sig-
nal.
CANCEL SW
ON/OFF
• Indicates [ON/OFF] condition from CANCEL switch
signal.
RESUME/ACC SW
ON/OFF
• Indicates [ON/OFF] condition from RESUME/ACC
switch signal.
SET SW
ON/OFF
• Indicates [ON/OFF] condition from SET switch signal.
BRAKE SW1
ON/OFF
• Indicates [ON/OFF] condition from ASCD brake
switch signal and ASCD clutch switch signal (M/T
models).
BRAKE SW2
ON/OFF
• Indicates [ON/OFF] condition of stop lamp switch sig-
nal.
VHCL SPD CUT
NON/CUT
• Indicates the vehicle cruse condition.
NON: Vehicle speed is maintained at the ASCD set
speed.
CUT: Vehicle speed decreased to excessively low
compared with the ASCD set speed, and ASCD oper-
ation is cut off.
Monitored item
Unit
Description
Remarks
DIAGNOSIS SYSTEM (ECM)
EC-117
< SYSTEM DESCRIPTION >
[MR18DE]
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LO SPEED CUT
NON/CUT
• Indicates the vehicle cruse condition.
NON: Vehicle speed is maintained at the ASCD set
speed.
CUT: Vehicle speed decreased to excessively low and
ASCD operation is cut off.
AT OD MONITOR
ON/OFF
• Indicates [ON/OFF] condition of CVT O/D according to
the input signal from the TCM.
AT OD CANCEL
ON/OFF
• Indicates [ON/OFF] condition of CVT O/D cancel re-
quest signal from the TCM.
CRUISE LAMP
ON/OFF
• Indicates [ON/OFF] condition of CRUISE lamp deter-
mined by the ECM according to the input signals.
SET LAMP
ON/OFF
• Indicates [ON/OFF] condition of SET lamp determined
by the ECM according to the input signals.
THRTL STK CNT
B1
*
—
—
EVAP LEAK DIAG
YET/CMPLT
• Indicates the condition of EVAP leak diagnosis.
YET: EVAP leak diagnosis has not been performed
yet.
CMPLT: EVAP leak diagnosis has been performed
successfully.
EVAP DIAG READY
ON/OFF
• Indicates the ready condition of EVAP leak diagnosis.
ON: Diagnosis has been ready condition.
OFF: Diagnosis has not been ready condition.
HO2 S2 DIAG1 (B1)
INCMP/CM-
PLT
• Indicates DTC P0139 self-diagnosis (delayed re-
sponse) condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
HO2 S2 DIAG2 (B1)
INCMP/CM-
PLT
• Indicates DTC P0139 self-diagnosis (slow response)
condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
A/F SEN1
DIAG2(B1)
INCMP/CM-
PLT
• Indicates DTC P014C or P014D self-diagnosis condi-
tion.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
A/F SEN1
DIAG3(B1)
ABSNT/
PRSNT
• Indicates DTC P014C, P014D, P015A or P015B self-
diagnosis condition.
ABSNT: The vehicle condition is not within the diagno-
sis range.
PRSNT: The vehicle condition is within the diagnosis
range.
SYSTEM 1 DIAG-
NOSIS A B1
INCMP/CM-
PLT
• Indicates DTC P117A self-daiagnosis condition.
INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
SYSTEM 1 DIAG-
NOSIS B B1
ABSENT/
PRSENT
• Indicates DTC P117A self-daiagnosis condition.
ABSENT: Self-diagnosis standby
PRSENT: Under self-diagnosis
A/F-S ATMSPHRC
CRCT B1
—
Displays a determined value of atmospheric correction
factor necessary for correcting an A/F sensor signal in-
put to ECM. The signal used for the correction is an A/F
sensor signal transmitted while driving under atmo-
spheric pressure.
A/F-S ATMSPHRC
CRCT B2
—
Displays a determined value of atmospheric correction
factor necessary for correcting an A/F sensor signal in-
put to ECM. The signal used for the correction is an A/F
sensor signal transmitted while driving under atmo-
spheric pressure.
Monitored item
Unit
Description
Remarks
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