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Home >> Infiniti >> 2019 >> Q70L 5.6 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (3.7L) (1 Of 2) >> System Description >> Diagnosis System (ECM) >> CONSULT Function >> Data Monitor Mode
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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

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 displayed.
  • When the engine is stopped, a certain value is indicated.
  • When engine is running, specification range is indicated in "SPEC".

MAS A/F SE-B2

B/FUEL SCHDL

msec
  • "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 correction 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, specification range is indicated in "SPEC".

A/F ALPHA-B2

COOLANT 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.

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.

A/F SEN1 (B2)

HO2S2 (B1)

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

HO2S2 (B2)

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.

HO2S2 MNTR (B2)

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, they 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, they differs from ECM terminal voltage signal.

TP SEN 2-B1

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.

INT/A TEMP SE

deg.C or deg.F
  • The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated.

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 signal.

AIR COND SIG

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

P/N POSI SW

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

PW/ST SIGNAL

ON/OFF
  • [ON/OFF] condition of the power steering system (determined by the signal voltage of the power steering pressure sensor signal) is indicated.

LOAD SIGNAL

ON/OFF
  • Indicates [ON/OFF] condition from the electrical load signal.

    ON: Rear window defogger switch is ON and/or lighting 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 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 compensated by ECM according to the input signals.
  • When the engine is stopped, a certain computed value is indicated.

INJ PULSE-B2

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.

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 according to the signal voltage of the mass air flow sensor.

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.

INT/V TIM (B1)

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

INT/V TIM (B2)

INT/V SOL (B1)

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

INT/V SOL (B2)

TP SEN 1-B2

V
  • The throttle position sensor signal voltage is displayed.
  • TP SEN 2-B2 signal is converted by ECM internally. Thus, they differs from ECM terminal voltage signal.

TP SEN 2-B2

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 indicated.

    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.

HO2S2 HTR (B2)

I/P PULLEY 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.

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.

SNOW MODE SW

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

ENG OIL TEMP

deg.C or deg.F
  • The engine oil temperature (determined by the signal voltage of the engine oil temperature sensor) is displayed.

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 computed by ECM according to the input signals.
  • The current flow to the heater becomes larger as the value increases.

A/F S1 HTR (B2)

AC PRESS SEN

V
  • The signal voltage from the refrigerant pressure sensor 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.

MAIN SW

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

SET SW

ON/OFF
  • Indicates [ON/OFF] condition from SET/COAST 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.

DIST SW

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

CRUISE LAMP

ON/OFF
  • Indicates [ON/OFF] condition of CRUISE lamp determined by the ECM according to the input signals.

BAT CUR SEN

mV
  • The signal voltage of battery current sensor is displayed.

MAP SENSOR

V
  • The signal voltage from the manifold absolute pressure (MAP) sensor is displayed.

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.

BRAKE BST PRES SE

mV
  • Always a certain value is displayed.
  • This item is not efficient for Y51 models.

VVEL POSITION SEN-B1

V
  • The VVEL control shaft position sensor signal voltage is displayed.

VVEL POSITION SEN-B2

VVEL TIM-B1

deg
  • Indicates [deg] of VVEL control shaft angle.

VVEL TIM-B2

VVEL LEARN

YET/DONE
  • Display the condition of VVEL learning

    YET: VVEL learning has not been performed yet.

    DONE: VVEL learning has already been performed successfully.

VVEL SEN LEARN-B1

V
  • Indicates the VVEL learning value.

VVEL SEN LEARN-B2

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.

A/F ADJ-B2

FAN DUTY

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

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 active.

    OFF: Power generation voltage variable control is inactive.

BAT TEMP SEN

V
  • The signal voltage from the battery temperature sensor is displayed.

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/CMPLT
  • Indicates DTC P0139 self-diagnosis (delayed response) condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

HO2 S2 DIAG1 (B2)

INCMP/CMPLT
  • Indicates DTC P0159 self-diagnosis (delayed response) condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

HO2 S2 DIAG2 (B1)

INCMP/CMPLT
  • Indicates DTC P0139 self-diagnosis (slow response) condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

HO2 S2 DIAG2 (B2)

INCMP/CMPLT
  • Indicates DTC P0159 self-diagnosis (slow response) condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG1 (B1)

INCMP/CMPLT
  • Indicates DTC P015A or P015B self-diagnosis condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG1 (B2)

INCMP/CMPLT
  • Indicates DTC P015C or P015D self-diagnosis condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG2 (B1)

INCMP/CMPLT
  • Indicates DTC P014C or P014D self-diagnosis condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

A/F SEN1 DIAG2 (B2)

INCMP/CMPLT
  • Indicates DTC P014E or P014F 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 diagnosis range.

    PRSNT: The vehicle condition is within the diagnosis range.

A/F SEN1 DIAG3 (B2)

ABSNT/PRSNT
  • Indicates DTC P014C, P014D, P015A or P015B self-diagnosis condition.

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

    PRSNT: The vehicle condition is within the diagnosis range.

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 B2

--

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.

A/F-S ATMSPHRC CRCT UP B2

count

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

THRTL STK CNT B1

--
NOTE: The item is indicated, but not used.

THRTL STK CNT B2
NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
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