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Home >> Infiniti >> 2014 >> QX80 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) >> System Description >> Diagnosis System (ECM) >> Diagnosis Description >> 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.

Monitored Item

For reference values of the following items, refer to "REFERENCE VALUE ".

x: Applicable
Monitored item Unit Description Remarks
ENG SPEED RPM
  • Indicates the engine speed computed from the signal of the crankshaft position sensor and camshaft position sensor.
  • 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".
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 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
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 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 °C or °F
  • The fuel temperature (determined by the signal voltage of the fuel tank temperature sensor) is displayed.
  
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.
  
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 blower fan ON signal.
  
BRAKE SW ON/OFF
  • Indicates [ON/OFF] condition from the stop lamp switch signal.
  
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.
COMBUSTION -
  • These items are displayed but are not applicable to this model.
  
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 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)
AIR COND RLY ON/OFF
  • The air conditioner relay control condition (determined by ECM according to the input signals) is indicated.
  
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.
  
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)
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)
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.

  
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.
  
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.

  
TRVL AFTER MIL km or mile
  • Distance traveled while MIL is activated.
  
SNOW MODE SW ON/OFF
  • Indicates [ON/OFF] condition from the snow mode switch signal.
  
ENG OIL TEMP °C or °F
  • The engine oil temperature (determined by the signal voltage of the engine oil temperature sensor) 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 indicator determined by the ECM according to the input signals.
  
AC EVA TEMP °C or °F
  • Indicates A/C evaporator temperature sent from A/C auto amp.
  
AC EVA TARGET °C or °F
  • Indicates target A/C evaporator temperature sent from A/C auto amp.
  
FAN DUTY %
  • Indicates a command value for cooling fan. The value is calculated by ECM based on 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 displayed.
  
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.
  
A/F ADJ-B2
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 signal voltage of the intake air temperature sensor) is indicated.
  
AC PRESS SEN V
  • The signal voltage from the refrigerant pressure sensor is displayed.
  
FUEL PRES SEN MPa
  • Indicates the fuel rail pressure computed by ECM according to the input signals
  
FUEL INJ B1 msec
  • ECM-calculated injection pulse width of the fuel injector on the Bank 1 side.
  
FUEL INJ B2 msec
  • ECM-calculated injection pulse width of the fuel injector on the Bank 2 side.
  
INT/V TIM (B1) °CA
  • Indicates [°CA] of intake camshaft advance angle.
  
INT/V TIM (B2)
MAP SENSOR V
  • The signal voltage from the manifold absolute pressure (MAP) 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.

  
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
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
FPCM HI/MID/LOW/OFF
  • The control condition of the fuel pump control module (FPCM) (determined by ECM according to the input signals) is indicated.
  
BAT TEMP SEN V
  • The signal voltage from the battery temperature sensor is displayed.
  
COOLING FAN SPD RPM
  • Displays a cooling fan speed from a signal of electrically-controlled cooling fan coupling.
  
THRTL STK CNT B1(1) - -  
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.

  
FUEL INJ TIMG deg
  • Indicates the fuel injection timing computed by ECM according to the input signals.
  
H/P FUEL PUMP DEG deg
  • Displays ECM-calculated fuel discharge position of the high pressure fuel pump.
  
FUEL PRES SEN V mV
  • The signal voltage of FRP sensor is displayed.
  
L/FUEL PRES SEN MPa
  • Displays a pressure value calculated from a low fuel pressure sensor voltage.
  
L/FUEL PRES SEN V mV
  • The signal voltage of low fuel pressure sensor is displayed.
  
ECM TEMP 1 °C or °F
  • Displays a temperature calculated from a signal of ECM temperature sensor 1.
  
ECM TEMP 2 °C or °F
  • Displays a temperature calculated from a signal of ECM temperature sensor 2.
  
FUEL PUMP DUTY %
  • The control condition of the fuel pump control module (FPCM) (determined by ECM according to the input signals) is indicated.
  
A/F SEN1 DIAG(B1)(1) INCMP/CMPLT
  • Indicates DTC P0133 self-diagnosis condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

  
A/F SEN1 DIAG(B2)(1) INCMP/CMPLT
  • Indicates DTC P0153 self-diagnosis condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

  
(1) 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.
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