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Home >> Infiniti >> 2017 >> Q50 Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System (Introduction) (3.0L) (Except Hybrid)) >> System Description >> Diagnosis System (ECM) >> Consult Function >> Data Monitor Mode >> Monitored Item

Monitored Item

WARNING: This page is about a different variant/trim than selected.
Monitored item Unit Monitor Item Selection Description Remarks
ECU INPUT SIGNALS MAINSIGNALS
COOLANT 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.
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 SE °C or °F * *
  • The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated.
 
TURBO BST SEN V    
  • The turbocharger boost sensor signal voltage is displayed.
 
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 °C or °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.
 
HO2S2 (B2)
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 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
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)
TC/SC SPEED B1 RPM    
  • The turbocharge revolution speed (determined by the signal voltage of the turbocharge speed sensor) is displayed.
 
TC/SC SPEED B2
EXH/V TIM B1 °CA    
  • Indicates [°CA] of exhaust camshaft retard angle.
 
EXH/V TIM B2    
W/GATE V CLSD LEARN B2 INCMP/CMPLT     Displays "full close position learning" experience of wastegate actuator.
  • INCMP: Learning is incomplete. There is no memory of the full close position voltage in the ECM.
  • CMPLT: Learning is complete. Full close position voltage is memory in the ECM.
 
W/GATE V CLSD LEARN B1    
W/G ACTUATOR POSITION B1 m    
  • Indicates real stroke position of turbocharger wastegate actuator. The value is calculated by ECM based on the difference voltage between position sensor output and valve close position.
 
W/G ACTUATOR POSITION B2      
RADIATOR COOLANT TEMP °C    
  • The radiator coolant temperature (determined by the signal voltage of the radiator coolant temperature sensor) is displayed.
 
Ignition timing deg * *
  • Indicates the ignition timing computed by ECM according to the input signals.
    NOTE:

    Indicates degree from BTDC (Before Top Dead Center) of compression stroke.

  • When the engine is stopped, a certain value is indicated.
Fuel injection timing deg    
  • Indicates the fuel injection timing computed by ECM according to the input signals.
    NOTE:

    Indicates degree from BTDC (Before Top Dead Center) of intake stroke.

 
Charge air cooler coolant temp deg    
  • The charge air cooler coolant temperature (determined by the signal voltage of the charge air cooler coolant temperature sensor) is displayed.
 
FAN DUTY %    
  • Indicates a command value for cooling fan. The value is calculated by ECM based on input signals.
 
AC EVA TEMP °C or °F    
  • Indicates A/C evaporator temperature sent from "unified meter and A/C amp".
 
AC EVA TARGET °C or °F    
  • Indicates target A/C evaporator temperature sent from "unified meter and A/C amp".
 
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.
 
FUEL PUMP DUTY %    
  • 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.
 
THRTL STK CNT B1 -    
NOTE:

The item is indicated, but not used.

 
THRTL STK CNT B2
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.
 
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.
 
FUEL PRES SEN MPa    
  • Indicates the fuel rail pressure computed by ECM according to the input signals.
 
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 INJ B1 msec    
  • ECM-calculated injection pulse width of the fuel injector on the Bank 1 side.
 
FUEL INJ B2    
IDLE FUEL PRES MIN MPa    
  • Lower limit of fuel pressure at idle state.
 
IDLE FUEL PRES MAX    
  • Upper limit of fuel pressure at idle state.
 
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.
 
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.
 
A/F SEN1 (B2)
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    
  • The preset vehicle speed is displayed.
 
VTC DTY EX B1 %    
  • The control condition of the exhaust valve timing control solenoid valve (determined by ECM according to the input signals) is indicated.
 
VTC DTY EX B2      
BAT CUR SEN mV    
  • The signal voltage of battery current sensor is displayed.
 
MILEAGE FOR EONV km    
  • Mileage counter for EONV upper byte 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    
INT/V TIM (B1) °CA    
  • Indicates [°CA] of intake camshaft advance angle.
 
INT/V TIM (B2)
H/P FUEL PUMP DEG deg    
  • Displays ECM-calculated fuel discharge position of the high pressure fuel pump.
 
FUEL PRES SEN V V    
  • The signal voltage of FRP sensor is displayed.
 
EOP SENSOR V    
  • The signal voltage of EOP sensor is displayed.
 
ECM TEMP 1 °C    
  • The ECM temperature is indicated.
 
ECM TEMP 2    
MASS AIR FLOW SENSOR (Hz) Hz    
  • The signal frequency of the mass air flow sensor bank 1 is displayed.
 
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 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 B2 count    
  • Displays the number of updates of the A/F sensor atmospheric correction factor.
 
A/F-S ATMSPHRC CRCT UP B1 count    
  • Displays the number of updates of the A/F sensor atmospheric correction factor.
 
EXHAUST GAS TEMP SEN 1 B1 V    
  • The signal voltage of exhaust gas temperature sensor is displayed.
 
EXHAUST GAS TEMP SEN 1 B2    
Mass air flow sensor B2 (Hz) Hz    
  • The signal frequency of the mass air flow sensor bank 2 is displayed.
 
W/G ACTUATOR POSI SEN B1 V    
  • Indicates position sensor output voltage of turbocharger wastegate actuator.
 
W/G ACTUATOR POSI SEN B2    
ENGINE COOLANT B/V POSI deg    
  • The Multi-way Control Valve position detected by the position sensor is displayed.
 
Electric water pump 1 duty %    
  • The control condition of the charge air cooler cooling electric water pump (determined by ECM according to the input signals) is indicated.
 
Electric water pump 2 duty    
TOTAL DISTANC - OCS RST 1 km    
  • The Multi-way Control Valve position detected by the position sensor is displayed.
 
TOTAL DISTANC - OCS RST 2 km    
  • Total travel distance of odd meter when Oil Control System is reset.
 
TOTAL DISTANC - OCS RST 3 km    
  • Total travel distance of odd meter when Oil Control System is reset. (two times ago)
 
DETERIORTN VL - OCS RST 1 -    
  • Total travel distance of odd meter when Oil Control System is reset. (three times ago)
 
DETERIORTN VL - OCS RST 2 -    
  • Insicates deterioration condition of the engine oil when Oil Control System is reset.
 
DETERIORTN VL - OCS RST 3 -    
  • Insicates deterioration condition of the engine oil when Oil Control System is reset. (three times ago)
 
TOTAL DISTANC - OCS WRN 1 km    
  • Total travel distance of odd meter when Oil Control System remaining distance is zero.
 
TOTAL DISTANC - OCS WRN 2 km    
  • Total travel distance of odd meter when Oil Control System remaining distance is zero. (two times ago)
 
TOTAL DISTANC - OCS WRN 3 km    
  • Total travel distance of odd meter when Oil Control System remaining distance is zero. (two times ago)
 
DETERIORTN VL - OCS WRN 1 -    
  • Insicates deterioration condition of the engine oil when Oil Control System remaining distance is zero.
 
DETERIORTN VL - OCS WRN 2 -    
  • Insicates deterioration condition of the engine oil when Oil Control System remaining distance is zero. (two times ago)
 
DETERIORTN VL - OCS WRN 3 -    
  • Insicates deterioration condition of the engine oil when Oil Control System remaining distance is zero. (three times ago)
 
CURRENT DETERIORATN VAL -    
  • Insicates deterioration condition of the engine oil.
 
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.

 
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.
 
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.
HO2S2 MNTR (B2)   *
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.
 
COMBUSTION -    
  • These items are displayed but are not applicable to this model.
 
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.
 
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.
 
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)    
DIST SW On/Off    
  • Indicates [On/Off] condition from DISTANCE switch signal.
 
BRAKE SW1 On/Off    
  • Indicates [On/Off] condition from brake pedal position switch signal.
 
BRAKE SW2 On/Off    
  • Indicates [On/Off] condition of stop lamp switch signal.
 
SET SW On/Off    
  • Indicates [On/Off] condition from SET switch signal.
 
RESUME/ACC SW On/Off    
  • Indicates [On/Off] condition from RESUME/ACCELERATE 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.
 
SET LAMP On/Off    
  • Indicates [On/Off] condition of SET lamp determined by the ECM according to the input signals.
 
AT OD CANCEL On/Off    
  • Indicates [On/Off] condition of CVT O/D according to the input signal from the TCM.
For M/T models, always "OFF" is displayed.
AT OD MONITOR On/Off    
  • Indicates [On/Off] condition of CVT O/D according to the input signal from the TCM.
For M/T models, always "OFF" is displayed.
CRUISE LAMP On/Off    
  • Indicates [On/Off] condition of CRUISE lamp determined by the ECM according to the input signals.
 
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.
 
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.
 
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.

 
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 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 (B2) INCMP/CMPLT    
  • Indicates DTC P0159 self-diagnosis (slow 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.

 
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 B2 INCMP/CMPLT    
  • Indicates DTC P219B self - diagnosis condition.
    • INCMP: Self - diagnosis is incomplete.
    • CMPLT: Self - diagnosis is complete.
 
SYSTEM 1 DIAGNOSIS A B1 INCMP/CMPLT    
  • Indicates DTC P219A 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 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 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 DIAG2 (B1) INCMP/CMPLT    
  • Indicates DTC P014C or P014D self-diagnosis condition.

    INCMP: Self-diagnosis is incomplete.

    CMPLT: Self-diagnosis is complete.

 
SYSTEM 1 DIAGNOSIS B B2 ABSNT/PRSNT    
  • Indicates DTC P219B self - diagnosis condition.
    • ABSNT: Self - diagnosis standby
    • PRSNT: Under self - diagnosis
 
SYSTEM 1 DIAGNOSIS B B1 ABSNT/PRSNT    
  • Indicates DTC P219A self - diagnosis condition.
    • ABSNT: Self - diagnosis standby
    • PRSNT: Under self - diagnosis
 
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 SEN1 DIAG3 (B1) ABSNT/PRSNT    
  • Indicates DTC P014E, P014F, P015C or P015D self-diagnosis condition.

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

    PRSNT: The vehicle condition is within the diagnosis range.

 
NOTE:

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