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Home >> Nissan-Datsun >> 2009 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Qr25DE) >> Service Information >> Trouble Diagnosis >> CONSULT-III Function (ENGINE) >> Data Monitor Mode
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Data Monitor Mode

Monitored Item

DATA MONITOR MODE REFERENCE CHART

x: Applicable
Monitored item Unit Description Remarks
ENG SPEED RPM
  • Indicates the engine speed computed from the signals 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".
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.
  • When engine is running specification range is indicated in "SPEC".
  • This data also includes the data for the air/fuel ratio learning control.
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 A/F sensor 1 is displayed.
  
A/F SEN1 (B2) V
HO2S2 (B1) V
  • The signal voltage of the heated oxygen sensor 2 is displayed.
  
HO2S2 (B2) V
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) RICH/LEAN
VHCL SPEED SE km/h or mph
  • The vehicle speed computed from the vehicle speed signal 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, it differs from ECM terminal voltage signal.
ACCEL SEN 2 V
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 V
FUEL T/TMP SE °C or °F
  • The fuel temperature (determined by the signal voltage of the fuel tank temperature sensor) is displayed.
  
VEHICLE SPEED km/h or mph
  • Indicates the vehicle speed computed from the secondary speed sensor 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.
  
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 the 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) switch signal.
  
PW/ST SIGNAL ON/OFF
  • [ON/OFF] condition of the power steering system (determined by the signal sent from EPS control unit) 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.
  
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.
  
I/P PULLY SPD RPM
  • Indicates the engine speed computed from the primary speed sensor 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 msec
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 airflow divided by peak airflow.
  
MASS AIRFLOW. g.m/s
  • Indicates the mass airflow 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
  • Indicates [°CA] of intake camshaft advanced angle.
  
INT/V SOL (B1) %
  • The control value of the intake valve timing control solenoid valve (determined by ECM according to the input signal) is indicated.
  • The advance angle becomes larger as the value increases
  
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.
  
COOLING FAN HI/LOW/OFF
  • Indicates the condition of the cooling fan (determined by ECM according to the input signals).

    HI: High speed operation

    LOW: Low speed operation

    OFF: Stop

  
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) ON/OFF
IDL A/V LEARN YET/CMPLT
  • Display 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.
  
A/F S1 HTR (B1) %
  • Indicates 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 TCM 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.
  
VHCL SPD CUT NON/CUT
  • Indicates the vehicle cruise condition.

    NON: Vehicle speed is maintained at the ASCD set speed.

    CUT: Vehicle speed increased to excessively high compared with the ASCD set speed, and ASCD operation is cut off.

  
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 compared with the ASCD set speed, and ASCD operation is cut off.

  
AT OD MONITOR ON/OFF
  • Indicates [ON/OFF] condition of CVT according to the input signal from the TCM.
  • For M/T models always "OFF" is displayed
AT OD CANCEL ON/OFF
  • Indicates [ON/OFF] condition of CVT cancel signal sent 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.
  
SET LAMP ON/OFF
  • Indicates [ON/OFF] condition of SET lamp determined by the ECM according to the input signals.
  
A/F ADJ-B1  
  • Indicates the correction 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 air fuel ratio (A/F) sensor 1 signal.
  
A/F ADJ-B2  
NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
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