Nissan Versa Note. Manual - part 270

EC-62

< SYSTEM DESCRIPTION >

[HR16DE]

DIAGNOSIS SYSTEM (ECM)

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, specification 

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, specification 
range is indicated in “SPEC”.

A/F ALPHA-B1

%

The mean value of the air-fuel ratio feedback cor-
rection factor per cycle is indicated.

• When the engine is stopped, a certain 

value is indicated.

• When engine is running, specification 

range is indicated in “SPEC”.

• This data also includes the data for 

the air-fuel ratio learning control.

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 temperature 
sensor is open or short-circuited, ECM 
enters fail-safe mode. The engine cool-
ant temperature determined by the ECM 
is displayed.

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 dis-
played.

BATTERY VOLT

V

The power supply voltage of ECM is displayed.

ACCEL SEN 1

V

The accelerator pedal position sensor signal volt-
age 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 dis-
played.

EVAP SYS PRES

V

The signal voltage of EVAP control system pres-
sure sensor is displayed.

FUEL LEVEL SE

V

The signal voltage of the fuel level sensor is dis-
played.

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 dis-
played 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 
signal.

AIR COND SIG

ON/OFF

Indicates [ON/OFF] condition of the air conditioner 
switch as determined by the air conditioner signal.

PW/ST SIGNAL

ON/OFF

[ON/OFF] condition of the power steering system 
(determined by the signal sent from EPS control 
unit) is indicated.

Monitored item

Unit

Description

Remarks

DIAGNOSIS SYSTEM (ECM)

EC-63

< SYSTEM DESCRIPTION >

[HR16DE]

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LOAD SIGNAL

ON/OFF

• Indicates [ON/OFF] condition of the electrical 

lode signal.

- ON: Rear window defogger switch is ON and/or 

lighting switch is 2nd position.

- OFF: Both rear window defogger switch and light-

ing switch are OFF.

IGNITION SW

ON/OFF

Indicates [ON/OFF] condition from ignition switch 
signal.

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 com-
pensated by ECM according to the input signals.

When the engine is stopped, a certain 
computed value is indicated.

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 
current air flow divided by peak air flow.

MASS AIRFLOW

g/s

Indicates the mass air flow computed by ECM ac-
cording to the signal voltage of the mass air flow 
sensor.

PURG VOL C/V

%

• Indicates the EVAP canister purge volume con-

trol solenoid valve control value computed by the 
ECM according to the input signals.

• The opening becomes larger as the value in-

creases.

INT/V TIM(B1)

°CA

Indicates [

°CA] of intake camshaft advance angle. 

EXH/V TIM B1

°CA

Indicates [

°CA] of exhaust camshaft retard angle. 

INT/V SOL(B1)

%

• The control value of the intake valve timing con-

trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.

• The advance angle becomes larger as the value 

increases.

AIR COND RLY

ON/OFF

The air conditioner relay control condition (deter-
mined by ECM according to the input signals) is in-
dicated.

FUEL PUMP RLY

ON/OFF

Indicates the fuel pump relay control condition de-
termined 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 signals) is displayed.

- ON: Closed
- OFF:  Open

THRTL RELAY

ON/OFF

Indicates the throttle control motor relay control 
condition determined by the ECM according to the 
input signals.

COOLING FAN

HI/LOW/OFF

• Indicates the condition of the cooling fan (deter-

mined by ECM according to the input signals).

- HI: High speed operation
- LOW: Low speed operation
- OFF:  Stop

HO2S2 HTR (B1)

ON/OFF

Indicates [ON/OFF] condition of heated oxygen 
sensor 2 heater determined by ECM according to 
the input signals.

Monitored item

Unit

Description

Remarks

EC-64

< SYSTEM DESCRIPTION >

[HR16DE]

DIAGNOSIS SYSTEM (ECM)

ALT DUTY SIG

ON/OFF

• The control condition of the power generation 

voltage variable control (determined by ECM ac-
cording to the input signals) is indicated.

- ON: Power generation voltage variable control is 

active.

- OFF: Power generation voltage variable control 

is inactive.

I/P PULLY SPD 

rpm

Indicates the engine speed computed from the in-
put speed sensor 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

• Displays the condition of Idle Air Volume Learn-

ing.

- YET: Idle air volume learning has not been per-

formed yet.

- CMPLT: Idle air volume learning has already 

been performed successfully.

TRVL AFTER MIL

km or mile

Distance traveled while MI is activated.

ENG OIL TEMP

°C or °F

The engine oil temperature (determined by the sig-
nal voltage of the engine oil temperature sensor) is 
indicated.

A/F S1 HTR(B1)

%

• Air fuel ratio (A/F) sensor 1 heater control value 

computed by ECM according to the input signals.

• The current flow to the heater becomes larger as 

the value increases.

VHCL SPEED SE

km/h or mph

The vehicle speed computed from the vehicle 
speed signal sent from combination meter is dis-
played.

SET VHCL SPD

km/h or mph

The preset vehicle speed is displayed.

MAIN SW

ON/OFF

Indicates [ON/OFF] condition from ASCD MAIN 
switch signal.

CANCEL SW

ON/OFF

Indicates [ON/OFF] condition from CANCEL switch 
signal.

RESUME/ACC SW

ON/OFF

Indicates [ON/OFF] condition from ACCEL/RES 
switch signal.

SET SW

ON/OFF

Indicates [ON/OFF] condition from COAST/SET 
switch signal.

BRAKE SW1

ON/OFF

Indicates [ON/OFF] condition from ASCD brake 
switch signal.

BRAKE SW2

ON/OFF

Indicates [ON/OFF] condition of stop lamp switch 
signal.

VHCL SPD CUT

NON/CUT

• Indicates the vehicle cruise 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 operation is cut off.

LO SPEED CUT

NON/CUT

• Indicates the vehicle cruise 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 accord-
ing to the input signal from the TCM.

AT OD CANCEL

ON/OFF

Indicates [ON/OFF] condition of CVT O/D cancel 
request signal.

Monitored item

Unit

Description

Remarks

DIAGNOSIS SYSTEM (ECM)

EC-65

< SYSTEM DESCRIPTION >

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CRUISE LAMP

ON/OFF

Indicates [ON/OFF] condition of CRUISE lamp de-
termined by the ECM according to the input signals.

SET LAMP*

ON/OFF

Indicates [ON/OFF] condition of SET lamp deter-
mined by the ECM according to the input signals.

ALT DUTY

%

Indicates the duty ratio of the power generation 
command value. The ratio is calculated by ECM 
based on the battery current sensor signal.

BAT CUR SEN

mV

The signal voltage of battery current sensor is dis-
played.

A/F ADJ-B1

—

Indicates the correction of a 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.

P/N POSI SW

ON/OFF

Indicates [ON/OFF] condition from the park/neutral 
position (PNP) signal.

INT/A TEMP SE

°C or °F

The intake air temperature (determined by the sig-
nal voltage of the intake air temperature sensor) is 
indicated.

AC PRESS SEN

V

The signal voltage from the refrigerant pressure 
sensor is displayed.

CLUTCH P/P SW

ON/OFF

Indicates [ON/OFF] condition clutch pedal position 
switch signals.

Models other than M/T models always 
display OFF.

VTC DTY EX B1

%

• The control value of the exhaust valve timing con-

trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.

• The advance angle becomes larger as the value 

increases.

THRTL STK CNT 
B1*

—

—

EVAP LEAK DIAG

YET/CMPLT

• Indicates the condition of EVAP leak diagnosis.

YET: EVAP leak diagnosis has not been per-
formed yet.
CMPLT: EVAP leak diagnosis has been per-
formed successfully.

EVAP DIAG READY

ON/OFF

• Indicates the ready condition of EVAP leak diag-

nosis.
ON: Diagnosis has been ready condition.
OFF: Diagnosis has not been ready condition.

A/F SEN1 
DIAG1(B1)

INCMP/CM-

PLT

• Indicates DTC P015A or P015B self-diagnosis 

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 

condition.

- 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 di-

agnosis range.

- PRSNT: The vehicle condition is within the diag-

nosis range.

HO2 S2 DIAG2(B1)

INCMP/CM-

PLT

• Indicates DTC P0139 self-diagnosis (slow re-

sponse) condition.

- INCMP: Self-diagnosis is incomplete.
- CMPLT: Self-diagnosis is complete.

EOP SENSOR

mV

The signal voltage of EOP sensor is displayed.

Monitored item

Unit

Description

Remarks