2012 Infiniti FX35 AWDFACTORY OEM SERVICE PROCEDURE

Data Monitor Mode

MONITORED ITEM LIST

Monitored item Unit Description Remarks
ENG SPEED rpm
  • Indicates the engine speed computed from the signal of the crankshaft position sensor and camshaft position sensor.
  • 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 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 air fuel ratio (A/F) sensor 1 is displayed.
  
A/F SEN1 (B2)
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 unified meter and A/C amp. 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.
  
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 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) 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 TIM (B1) °CA
  • Indicates [°CA] of intake camshaft advance angle.
  
INT/V TIM (B2)
EXH/V TIM B1 °CA
  • Indicates [°CA] of exhaust camshaft retard angle.
  
EXH/V TIM B2
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)
VTC DTY EX B1 %
  • The control value of the exhaust valve timing control magnet retarder (determined by ECM according to the input signals) is indicated.
  • The retard angle becomes larger as the value increases.
  
VTC DTY EX 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
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)
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.

  
SNOW MODE SW ON/OFF
  • Indicates [ON/OFF] condition from the snow mode switch signal.
  
ENG OIL TEMP °C or °F
  • The engine oil temperature (determined by the signal voltage of the engine oil temperature sensor) is displayed.
  
TRVL AFTER MIL km or mile
  • Distance traveled while MIL is activated.
  
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)
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 unified meter and A/C amp. 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.
  
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
  • Indicates [ON/OFF] condition of A/T O/D according to the input signal from the TCM.
  
AT OD CANCEL ON/OFF
  • Indicates [ON/OFF] condition of A/T O/D cancel request signal.
  
CRUISE LAMP ON/OFF
  • Indicates [ON/OFF] condition of CRUISE indicator determined by the ECM according to the input signals.
  
SET LAMP ON/OFF
  • Indicates [ON/OFF] condition of SET indicator determined by the ECM according to the input signals.
  
EXH V/T LEARN YET/CMPLT
  • Display the condition of Exhaust Valve Timing Control Learning

    YET: Exhaust Valve Timing Control Learning has not been performed yet.

    CMPLT: Exhaust Valve Timing Control Learning has already been performed successfully.

  
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 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
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.
  
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.

  
EVAP DIAG LEADY YET/CMPLT
  • Indicates the condition of EVAP leak diagnosis.

    YET: EVAP leak diagnosis has not been performed.

    CMPLT: EVAP leak diagnosis has been performed successfully.

  
EVAP LEAK DIAG ON/OFF
  • Indicates the ready condition of EVAP leak diagnosis.

    ON: Diagnosis has been ready condition.

    OFF: Diagnosis has not been ready condition.

  
(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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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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