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Home >> Nissan-Datsun >> 2016 >> Altima Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (Introduction) (VQ35DE)) >> System Description >> Diagnosis System (ECM) >> Consult Function >> Data Monitor Mode >> Monitored Item
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Monitored Item

WARNING: This page is about a different variant/trim than selected.

: Applicable

Monitored item Unit Monitor Item Selection Description Remarks
ECU INPUT SIGNALS MAIN SIGNALS
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.
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.  
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.
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    
INT/V TIM (B1) °CA     Indicates [°CA] of intake camshaft advance angle.  
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)
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)    
INT/V TIM (B2) °CA     Indicates [°CA] of intake camshaft advance angle.  
EXH/V TIM B1 °CA    
  • Indicates [°CA] of exhaust camshaft advance angle.
  
EXH/V TIM B2 °CA    
  • Indicates [°CA] of exhaust camshaft advance angle.
  
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.  
BAT TEMP SEN V     The signal voltage from the battery temperature sensor is displayed.  
THRTL STK CNT B1* -     -  
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.
INJ PULSE-B2    
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.  
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 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.
  
VTC DTY EX B2* %    
  • 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.
  
BAT CUR SEN V     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    
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 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.  
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) 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.  
VIAS S/V-1 On/Off     The control condition of the VIAS control solenoid valve 1 (determined by ECM according to the input signals) is indicated.
  • On: VIAS control solenoid valve 1 is operating.
  • Off: VIAS control solenoid valve 1 is not operating.
  
AIR COND RLY On/Off     The air conditioner relay control condition (determined by ECM according to the input signals) is indicated.  
ENGINE MOUNT IDLE/TRVL     The control condition of the electronic controlled engine mount (determined by ECM according to the input signals) is indicated.
  • IDLE: Engine speed is below 950 RPM
  • TRVL: Engine speed is above 950 RPM
  
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)    
DIST SW ON/OFF     Indicates [ON/OFF] condition from DISTANCE switch signal.  
BRAKE SW2 On/Off     Indicates [On/Off] condition of stop lamp switch signal.  
BRAKE SW1 On/Off     Indicates [On/Off] condition from brake pedal position switch signal or ASCD clutch switch.  
SET SW On/Off     Indicates [On/Off] condition from SET/COAST 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 cancel request signal.
  
AT OD MONITOR On/Off    
  • Indicates [On/Off] condition of CVT O/D according to the input signal from the TCM.
  
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.

  
VIAS S/V-2 On/Off     The control condition of the VIAS control solenoid valve 2 (determined by ECM according to the input signals) is indicated.
  • On: VIAS control solenoid valve 2 is operating.
  • Off: VIAS control solenoid valve 2 is not operating.
  
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 DIAG2(B2) INCMP/CMPLT     Indicates DTC P0139 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 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.
  
HO2 S2 DIAG1(B2) INCMP/CMPLT     Indicates DTC P0139 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.
  
COOLING FAN HI/MID/LOW/OFF    
  • The control condition of the cooling fan (determined by ECM according to the input signals) is indicated.

    HI: High speed operation

    MID: Middle speed operation

    LOW: Low speed operation

    OFF: Stop

  

* : 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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