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Home >> Infiniti >> 2008 >> M45 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (VK45DE) - Introduction >> Trouble Diagnosis >> CONSULT-III Function >> Data Monitor Mode >> Monitored Item
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Monitored Item

DATA MONITOR MODE

x: Applicable
Monitored item [Unit] Unit Description Remarks
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.
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.
B/FUEL SCHDL msec
  • Base fuel schedule indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction.
  
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.
 
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) x[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 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, it differs from ECM terminal voltage signal.
ACCEL SEN 2 [V]
TP SEN 1-B1 [V]
  • The throttle position sensor signal voltage is displayed.
  • THRTL SEN 2 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.
  
INT/A TEMP SE [°C] or [°F]
  • The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated.
  
EGR TEMP SEN [V]
  • The signal voltage of EGR temperature sensor is displayed.
EVAP SYS PRES [V]
  • The signal voltage of EVAP control system pressure sensor is displayed.
  
FUEL LEVELSE [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.
  
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 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 heater fan switch signal.
  
BRAKE SW [ON/OFF]
  • Indicates [ON/OFF] condition from the stop lamp switch 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 air flow divided by peak air flow.
  
MASS AIRFLOW
 		 [g.m/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]
  • Indicates [°CA] of intake camshaft advanced angle.
  
INT/V TIM (B2) [°CA]
INT/V SOL (B1) [%]
  • The control condition 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) [%]
VIAS S/V-1 [ON/OFF]
  • The control condition of the VIAS control solenoid valve (determined by ECM according to the input signals) is indicated.
  • OFF: VIAS control solenoid valve is not operating. ON: VIAS control solenoid valve is operating.
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) [ON/OFF]
I/P PULLY SPD [rpm]
  • Indicates the engine speed computed from the turbine revolution sensor signal.
  
VEHICLE SPEED [km/h] or [MPH]
  • Indicates the vehicle speed computed from the revolution sensor signal.
  
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) [%]
  • 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.
  
DIST SW [ON/OFF]
  • Indicates [ON/OFF] condition from DISTANCE switch signal.
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.
  
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 CUR SEN mV
  • The signal voltage of battery current sensor is displayed.
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.
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 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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