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Data Monitor Mode

WARNING: This page is about a different car, the 2011 Nissan 370Z. However, it is still accessible from the selected car via links, so may be relevant.

Monitored Item

DATA MONITOR MODE DESCRIPTION

Monitored item 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.
  • When engine is running, specification range is indicated in "SPEC".
MAS A/F SE-B2
B/FUEL SCHDL msec
  • "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
  • 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 failsafe 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 air fuel ratio (A/F) sensor 1 is displayed.
  
HO2S2 (B1) V
  • The signal voltage of the heated oxygen sensor 2 is displayed.
  
HO2S2 (B2)
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)
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, 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 T/TMP SE °C or °F
  • 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
  • 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.
  
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 the 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
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/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 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.
  
A/F S1 HTR (B2) %
  • 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.
  
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.
  
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.
  
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 decreased to excessively low 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, and ASCD operation is cut off.		  
AT OD MONITOR ON/OFF
  • Always OFF is displayed.
  • This item is not efficient for Z34 models.
  
AT OD CANCEL ON/OFF
  • Always OFF is displayed.
  • This item is not efficient for Z34 models.
  
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 combination meter.
  
AC EVA TARGET °C or °F
  • Indicates target A/C evaporator temperature sent from "unified meter and A/C amp.".
  
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 V
  • 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.
  
AC PRESS SEN V
  • The signal voltage from the refrigerant pressure sensor is displayed.
  
A/F SEN1 (B2) V
  • The A/F signal computed from the input signal of the air fuel ratio (A/F) sensor 1 is displayed.
  
ATOM PRES SEN mV
  • Always a certain value is displayed.
  • This item is not efficient for Z34 models.
BRAKE BST PRES SE mV
  • Always a certain value is displayed.
  • This item is not efficient for Z34 models.
INT/V TIM (B1) °CA
  • Indicates [°CA] of intake camshaft advance angle.
  
INT/V TIM (B2)
MAP SENSOR V
  • Always a certain value is displayed.
  • This item is not efficient for Z34 models.
  
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.		  
VVEL LEARN YET/DONE
  • Display the condition of VVEL learning

YET: VVEL learning has not been performed yet.
DONE: VVEL learning has already been performed successfully.		  
VVEL SEN LEARNB1 V
  • Indicates the VVEL learning value.
  
VVEL SEN LEARNB2
VVEL POSITION SEN-B1 V
  • The VVEL control shaft position sensor signal voltage is displayed.
  
VVEL POSITION SEN-B2
VVEL TIM-B1 deg
  • Indicates [deg] of VVEL control shaft angle.
  
VVEL TIM-B2
ALTDUTY %
  • Indicates the duty ratio of the power generation command value.
  
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.		  
GEAR POSITION 1/2/3/4/5/6/N/R/##
  • Indicates the shift position determined by the ECM according to the input signals.
 "##" is displayed when shift position cannot be judged.
M/T SYN REV STAT INACT/ACTIVE
  • Displays SynchroRev Match mode (S-MODE) is condition.

INACT: S-MODE is not operated
ACTIVE: S-MODE is operated		  
M/T SYNCHRO SW ON/OFF
  • Indicates [ON/OFF] condition from S-MODE switch signal.
  
CPP SW ON/OFF
  • Indicates [ON/OFF] condition from clutch pedal position switch signal.
  
CLUTCH INTLCK SW ON/OFF
  • Indicates [ON/OFF] condition from clutch interlock switch signal.
  
M/T N POS LEARN YET/DONE
  • Displays the M/T Neutral Position Learning condition.

YET: M/T neutral position learning is not complete yet.
DONE: M/T neutral position learning is successfully complete.		  
THRTL STK CNT B1(1) - -  
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 DIAG2 (B1)(1) 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)(1) INCMP/CMPLT
  • Indicates DTC P014E or P014F self-diagnosis condition.

INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.		  
(1) 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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