LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2021 >> Kicks SR >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (1 Of 2) >> System Description >> Diagnosis System (ECM) >> Consult Function >> Data Monitor Mode
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data Monitor Mode

NOTE:
  • The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.
  • For reference values of the following items, refer to Reference Value .

Monitored Item 

Monitored item

Unit

Description

Remarks

COOLAN TEMP/S

deg. C or deg. 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 coolant temperature determined by the ECM is displayed.

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.

INT/A TEMP SEN

deg. C or deg. F

The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated.

PURG VOL C/V

%

  • Indicates the EVAP canister purge volume control solenoid valve control value computed by the ECM according to the input signals.
  • The opening becomes larger as the value increases.

FUEL T/TMP SE

deg. C or deg. F

  • The fuel temperature (determined by the signal voltage of the fuel tank temperature sensor) is displayed.

FUEL LEVEL SE

V

  • The signal voltage of the fuel level sensor is displayed.

EVAP SYS PRES

V

  • The signal voltage of EVAP control system pressure sensor is displayed.

CAL/LD VALUE

%

  • "Calculated load value" indicates the value of the current air flow divided by peak air flow.

HO2S2 (B1)

V

  • The signal voltage of the heated oxygen sensor 2 is displayed.

ENG OIL TEMP

deg. C or deg. F

  • The engine oil temperature (determined by the signal voltage of the engine oil temperature sensor) is indicated.

A/F ALPHA - B1

%

  • ? The mean value of the air-fuel ratio feedback correction factor per cycle is indicated.

MAP SENSOR

--

Not used.

IGN TIMING

BTDC

  • Indicates the ignition timing computed by ECM according to the input signals.
  • When the engine is stopped, a certain value 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.

EXH/V TIM B1

deg. CA

  • Indicates [ deg. CA] of exhaust camshaft retard angle.

FAN DUTY

%

Indicates a command value for cooling fan. The value is calculated by ECM based on input signals.

THRTL STK CNT B1*

--

Not used.

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.

TRVL AFTER MIL

km or mile

  • Distance traveled while MIL is activated.

INJ PULSE-B1

msec

  • Indicates the actual fuel injection pulse width compensated by ECM according to the input signals.
  • When the engine is stopped, a certain computed value is indicated.

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".

MASS AIRFLOW

g/s

  • Indicates the mass air flow computed by ECM according to the signal voltage of the mass air flow sensor.

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 displayed.
  • TP SEN 2-B1 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.

TP SEN 2-B1

I/P PULLY SPD

RPM

  • Indicates the engine speed computed from the input speed sensor signal.

VEHICLE SPEED

km/h or mph

  • The vehicle speed computed from the vehicle speed signal sent from TCM is displayed.

TUMBLE POS SEN

V

The intake manifold runner control valve position sensor signal voltage is displayed.

AC PRESS SEN

V

  • The signal voltage from the refrigerant pressure sensor 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.

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.

VTC DTY EX B1

%

  • The control value of the exhaust valve timing control solenoid valve (determined by ECM according to the input signals) is indicated.
  • The advance angle becomes larger as the value increases.

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.

INT/V TIM(B1)

deg. CA

  • Indicates [ deg. CA] of intake camshaft advance angle.

EOP SENSOR

V

  • The signal voltage of EOP sensor is displayed.

MASS AIR FLOW SENSOR (Hz)

Hz

The signal frequency of the mass air flow sensor is displayed.

A/F-S ATMSPHRC CRCT B1

--

Displays a determined value of atmospheric correction factor necessary for correcting an A/F sensor signal input to ECM. The signal used for the correction is an A/F sensor signal transmitted while driving under atmospheric pressure.

A/F-S ATMSPHRC CRCT UP B1

count

Displays the number of updates of the A/F sensor atmospheric correction factor.

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 lighting switch are OFF.

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.

P/N POSI SW

ON/OFF

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

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 signal.

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.

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.

IDL A/V LEARN

YET/CMPLT

  • Displays 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 performed successfully.

BRAKE SW

ON/OFF

  • Indicates [ON/OFF] condition from the stop lamp switch signal.

DIST SW

ON/OFF

  • Indicates [ON/OFF] condition from DISTANCE switch signal.

SET SW

ON/OFF

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

RESUME/ACC SW

ON/OFF

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

CANCEL SW

ON/OFF

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

MAIN SW

ON/OFF

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

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 determined 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.

HO2S2 HTR (B1)

ON/OFF

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

HO2 S2 DIAG1 (B1)

INCMP/CMPLT

  • ? Indicates DTC P0139 self-diagnosis (delayed response) condition. - INCMP: Self-diagnosis is incomplete. - CMPLT: Self-diagnosis is complete.

HO2 S2 DIAG2 (B1)

INCMP/CMPLT

NOTE: The item is indicated, but not used.

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.

SYSTEM 1 DIAGNOSIS A B1

INCMP/CMPLT

Indicates DTC P219A self-diagnosis condition.

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

SYSTEM 1 DIAGNOSIS B B1

ABSNT/PRSNT

Indicates DTC P219A self-diagnosis condition.

  • ABSNT: Self-diagnosis standby
  • PRSNT: Under self-diagnosis

SYSTEM 1 DIAGNOSIS A B1

INCMP/CMPLT

  • Indicates DTC P219A self-diagnosis condition. - INCMP: Self-diagnosis is incomplete. - CMPLT: Self-diagnosis is complete.

SYSTEM 1 DIAGNOSIS B B1

ABSNT/ PRSNT

  • Indicates DTC P219A self-diagnosis condition. - ABSNT: Self-diagnosis standby - PRSNT: Under self-diagnosis

A/F IMBALNC DIAG - CPS STAT

ABSNT/ PRSNT

Indicates DTC P219C - P219F self-diagnosis condition.

  • ABSNT: The vehicle condition is not within the diagnosis range.
  • PRSNT: The vehicle condition is within the diagnosis range.

A/F IMBLNC DIAG - CPS CMPLT

INCMP/CMPLT

Indicates DTC P219C - P219F self-diagnosis condition.

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

*: The item is indicated, but not used.

NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.