LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2014 >> Q50 Hybrid Premium, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) (Hybrid) >> System Description >> Diagnosis System (ECM) >> Diagnosis Description >> 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.
Monitored Item
For reference values of the following items, refer to "REFERENCE VALUE ".
x: Applicable
Monitored item Unit Monitor Item Selection Description Remarks
ECU INPUT SIGNALS MAIN-SIGNALS
ENG SPEED RPM x x
  • 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 x x
  • 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 x x
B/FUEL SCHDL ms x x
  • "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 x x
  • 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 x x
  • The A/F signal computed from the input signal of the air fuel ratio (A/F) sensor 1 is displayed.
  
A/F SEN1 (B2)   x
HO2S2 (B1) V    
  • The signal voltage of the heated oxygen sensor 2 is displayed.
  
HO2S2 (B2) x x
HO2S2 MNTR (B1) RICH/LEAN x x
  • 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) x x
VHCL SPEED SE KM/H or MPH x x
  • The vehicle speed computed from the vehicle speed signal sent from combination meter is displayed.
  
BATTERY VOLT V x  
  • The power supply voltage of ECM is displayed.
  
TP SEN 1-B1 V   x
  • 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   x
FUEL T/TMP SE °C or °F x  
  • 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 x x
  • Indicates idle position [ON/OFF] computed by ECM according to the accelerator pedal position sensor signal.
  
AIR COND SIG ON/OFF x x
  • Indicates [ON/OFF] condition of the air conditioner switch as determined by the air conditioner signal.
  
LOAD SIGNAL ON/OFF x x
  • 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   x
  • Indicates [ON/OFF] condition from ignition switch signal.
  
HEATER FAN SW ON/OFF x  
  • Indicates [ON/OFF] condition from the heater fan switch signal.
  
BRAKE SW ON/OFF x  
  • Indicates [ON/OFF] condition from the stop lamp switch signal.
  
INJ PULSE-B1 msec x  
  • 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 x  
IGN TIMING BTDC x x
  • 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) °CA   x
  • Indicates [°CA] of intake camshaft advance angle.
  
INT/V TIM (B2)    
EXH/V TIM B1 °CA    
  • Indicates [°CA] of intake camshaft advance angle.
  
EXH/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)    
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 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.
  
ENG OIL TEMP °C or °F    
  • The engine oil temperature (determined by the signal voltage of the engine oil temperature sensor) is displayed.
  
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)    
FAN DUTY %    
  • Indicates a command value for cooling fan. The value is calculated by ECM based on input signals.
  
ATOM PRES SEN V    
  • The signal voltage from the atmospheric pressure sensor 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.
  
A/F ADJ-B2    
TP SEN 1-B2 mV    
  • 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    
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.
  
VTC DTY EX B1 %    
NOTE: The item is indicated, but not used.
  
VTC DTY EX B2 %      
ACCEL PEDAL POSI %    
  • Indicates the accelerator pedal opening value sent from HPCM.
  • The opening becomes larger as the value in creases.
  
ENG START RQST YES/NO    
  • Indicates [ON/OFF] condition of engine start request signal sent from HPCM.
  
ENG F/C RQST YES/NO    
  • Indicates [ON/OFF] condition of fuel cut request signal sent from HPCM.
  
AC PRESS SEN V    
  • The signal voltage from the refrigerant pressure 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.

  
THRTL STK CNT B1 -    
NOTE: The item is indicated, but not used.
  
THRTL STK CNT B2    
EOP SENSOR mV     The signal voltage of EOP sensor is displayed.  
TARGET ENGINE TORQUE Nm    
  • Displays an axial torque command value requested from HPCM.
  
IDLE REQUEST YES/NO    
  • Displays the idle request status sent from HPCM.

    YES: Idle request received

    NO: No idle request

  
MIL ON REQUEST YES/NO    
  • Displays the MIL ON request status sent from HPCM.

    YES: MIL ON request received

    NO: No MIL ON request

  
ENGINE NO-LOAD YES/NO    
  • Displays the clutch 1 disengagement/engagement status sent from HPCM.

    YES: Clutch 1 disengaged

    NO: Clutch 1 engaged

  
READY STATE YES/NO    
  • Displays the current HPCM state sent from HPCM.

    YES: READY state

    NO: Not in READY state

  
ENGINE NO-LOAD REQUEST 1 YES/NO    
  • Displays the clutch 1 disengagement request status sent to HPCM.
 This is sent when performing the Idle Air Volume Learning while driving.
ENGINE NO-LOAD REQUEST 2 YES/NO    
  • Displays the clutch 1 disengagement request status sent to HPCM.
 This is sent when performing the Idle Air Volume Learning using CONSULT.
IDLE STOP INHIBIT REQUEST YES/NO    
  • Displays the idle stop prohibit request status sent to HPCM in response to an idle stop request sent from HPCM.
  
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.

  
SYSTEM 1 DIAGNOSIS A B1 INCMP/CMPLT    
  • Indicates DTC P117A self-diagnosis condition.
    • INCMP: Self-diagnosis is incomplete.
    • CMPLT: Self-diagnosis is complete.
  
SYSTEM 1 DIAGNOSIS A B2 INCMP/CMPLT    
  • Indicates DTC P117B self-diagnosis condition.
    • INCMP: Self-diagnosis is incomplete.
    • CMPLT: Self-diagnosis is complete.
  
SYSTEM 1 DIAGNOSIS B B1 ABSNT/PRSNT    
  • Indicates DTC P117A self-diagnosis condition.
    • ABSNT: Self-diagnosis standby
    • PRSNT: Under self-diagnosis
  
SYSTEM 1 DIAGNOSIS B B2 ABSNT/PRSNT    
  • Indicates DTC P117B self-diagnosis condition.
    • ABSNT: Self-diagnosis standby
    • PRSNT: Under self-diagnosis
  
NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
scientia non olet · About LEMON Manuals