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Home >> Nissan-Datsun >> 2023 >> Sentra S >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (1 Of 2) >> System Description >> Diagnosis System (ECM) >> Consult Function >> Diagnosis Description
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Diagnosis Description

FUNCTION 

Diagnostic test mode CGW Status Description
Restricted Mode Diag Test Mode Open Mode
Self Diagnostic Result Display Display Display Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data can be read and erased quickly. *
CGW Information Display Display Display
  • Display the current CGW mode
  • Enables CGW to switch mode
Data Monitor Display Display Display Input/Output data in the ECM can be read.
Work Support Non-display Non-display Display This mode enables a technician to adjust some devices faster and more accurately by following the indications on the CONSULT unit.
Active Test Non-display Display Display Diagnostic Test Mode in which CONSULT drives some actuators apart from the ECMs and also shifts some parameters in a specified range.
DTC Work Support Non-display Display Display The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
ECU Identification Display Display Display ECM part number can be read.
Network-DTC Display Display Display Display network DTC which ECM memorizes when performing "Diagnosis (All System)"

*: The following emission-related diagnostic information is cleared when the ECM memory is erased.

SELF DIAGNOSTIC RESULT MODE 

Self Diagnostic Item 

Regarding items of DTC and 1st trip DTC, Refer to DTC Index .

How to Read DTC and 1st Trip DTC 

DTCs and 1st trip DTCs related to the malfunction are displayed in "Self-diag results" mode With CONSULT: "TIME" indicates the number of driving the vehicle after the last detection of DTC.

How to Erase DTC 

NOTE: SYMBOL If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again.
  1. Select "ENGINE" With CONSULT:
  2. Select "SELF-DIAG RESULTS" mode.
  3. Touch "ERASE". (DTC in ECM will be erased.)

Freeze Frame Data and 1st Trip Freeze Frame Data 

Freeze frame data item*1 Description
DIAG TROUBLE CODE [PXXXX] The engine control component part/control system has a trouble code displayed as PXXXX. (Refer to DTC Index ).
CAL/LD VALUE [%] The calculated load value at the moment a malfunction is detected is displayed.
COOLANT TEMP [°C] The engine coolant temperature at the moment a malfunction is detected is displayed.
L-FUEL TRM-B1 [%]
  • "Long-term fuel trim" at the moment a malfunction is detected is displayed.
  • The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than short-term fuel trim.
L-FUEL TRM-B2 [%]
S-FUEL TRM-B1 [%]
  • "Short-term fuel trim" at the moment a malfunction is detected is displayed.
  • The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel schedule.
S-FUEL TRM-B2 [%]
ENGINE SPEED [RPM] The engine speed at the moment a malfunction is detected is displayed.
VEHICL SPEED [km/h] or [mph] The vehicle speed at the moment a malfunction is detected is displayed.
ABSOL TH. P/S [%] The throttle valve opening angle at the moment a malfunction is detected is displayed.
INT/A TEMP SE [°C] or [°F] The intake air temperature at the moment a malfunction is detected is displayed.
FUEL SYS-B1
  • "Fuel injection system status" at the moment a malfunction is detected is displayed.
  • One of the following mode is displayed.
    • MODE 2: Open loop due to detected system malfunction
    • MODE 3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
    • MODE 4: Closed loop - using oxygen sensor (s) as feedback for fuel control
    • MODE 5: Open loop - has not yet satisfied condition to go to closed loop
FUEL SYS-B2
INT MANI PRES [kPa]
  • Constant value is displayed.
  • These items are displayed but are not applicable to this model.
COMBUST CONDITION
FUEL RAIL PRESSURE [MPa] The fuel rail pressure at the moment a malfunction is detected is displayed.
TARGET FUEL RAIL PRESSURE [MPa] The target fuel rail pressure at the moment a malfunction is detected is displayed.
BATTERY VOLTAGE [V] The battery voltage at the moment a malfunction is detected is displayed.
FUEL LEVEL [%] The fuel level at the moment a malfunction is detected is displayed.
ODO/TRIP METER [km] ODO/TRIP meter at the moment a malfunction is detected is displayed.
DTC count -
B/FUEL SCHDL [msec] The basic injection quantity at the moment a malfunction is detected is displayed.

*1: The items are the same as those of 1st trip freeze frame data.

DATA MONITOR MODE 

NOTE: SYMBOL
  • The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.
  • For reference values of the following items, Refer to Physical Values .

Monitored Item 

Monitored item Unit Description Remarks
COOLANT TEMP/S °C The engine coolant temperature (determined by the signal voltage of the engine outlet 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.  
EGR TEMP SEN      
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 control value of the EVAP canister purge volume control solenoid valve 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.  
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.  
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.
  • Specification value is indicated on monitor screen under the following conditions.
    • Reference: Select
    • Display type: Line graph
MAP SENSOR V The atmospheric pressure sensor signal voltage is displayed. -
FUEL INJ TIM BTDC Indicates the fuel injection timing computed by ECM according to the input signals. -
EXH/V TIM B1 °CA Indicates [°CA] of exhaust camshaft advance angle. -
EGR VALVE POSITION deg Indicates the EGR volume control valve angle -
FAN DUTY % Indicates a command value for cooling fan. The value is calculated by ECM based on input signals. -
THRTL STK CNT B1 -
NOTE: SYMBOL These items are displayed but are not applicable to this model.
 -
A/GRLL SHTTR POSITION F/CLOSEMOVINGF/OPENUNIDTF Indicates the status of active grille shutter.
  • F/CLOSE: Active grille shutter is fully closed.
  • MOVING: Active grille shutter is in motion.
  • F/OPEN: Active grille shutter is fully opened.
  • UNIDTF: Unable to specify the shutter position.
 -
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.
TRVL AFTER MIL km or mile Distance traveled while MIL is activated. -
B/FUEL SCHDL ms "Base fuel schedule"indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction. Specification value is indicated on monitor screen under the following conditions.
  • Reference: Select
  • Display type: Line graph
MASS AIRFLOW g/s Indicates the mass air flow computed by ECM according to the mass air flow sensor signal. -
FUEL PRES SEN MPa Indicates the fuel rail pressure computed by ECM according to the input signals. -
ACCEL SEN 1 V The signal voltage of the accelerator pedal position sensor 1 is displayed. -
ACCEL SEN 2 V The converted value of 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.
TP SEN 1-B1 V The signal voltage of the throttle position sensor 1 B1 is displayed. -
TP SEN 2-B1 V The value converted from the signal voltage of the throttle position sensor 2 B1 is displayed. TP SEN 2-B1 signal is converted by ECM internally. Thus, they differs from ECM terminal voltage signal.
I/P PULLY SPD RPM Indicates the engine speed computed from the input shaft revolution signal.  
VEHICLE SPEED km/h or mph The vehicle speed computed from the vehicle speed signal sent from TCM is displayed.  
TUMBLE POS SEN V The intake manifold runner control valve position sensor signal voltage 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 voltage computed from the input signal of the air fuel ratio (A/F) sensor 1 is displayed.  
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.
  
BAT CUR SEN V The signal voltage from the battery temperature 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.  
INT/V TIM (B1) °CA Indicates [°CA] of intake camshaft advance angle.  
H/P FUEL PUMP DEG deg Displays ECM-calculated fuel discharge position of the high pressure fuel pump.  
FUEL PRES SEN V mV The signal voltage of FRP sensor is displayed.  
EOP SENSOR mV The signal voltage of EOP sensor is displayed.  
ECM TEMP 1 °C Displays a temperature calculated from a signal of ECM temperature sensor 1.  
ECM TEMP 2 °C Displays a temperature calculated from a signal of ECM temperature sensor 2.  
Mass air flow sensor (HZ) B1 Hz The signal frequency of the mass air flow sensor is displayed.  
EGR VALVE POSITION SEN V The signal voltage of EGR volume control valve position sensor is displayed.  
LOAD SIGNAL On/Off Indicates [On/Off] condition of the electrical load signal.
  • ON... Rear window defogger switch is ON 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 Indicates [On/Off] condition of the power steering system (determined by the signal voltage of the power steering pressure sensor signal). -
P/N POSI SW On/Off Indicates [On/Off] condition from the reverse/neutral position 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.
IGNITION SW On/Off Indicates [On/Off] condition from ignition switch signal. -
HEATER FAN SW On/Off Indicates [On/Off] condition from the heater blower ON 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.
  • DONE... Idle air volume learning has already been performed successfully.
 -
BRAKE SW On/Off Indicates [On/Off] condition from the stop lamp switch signal. -
COMBUSTION  
NOTE: SYMBOL These items are displayed but are not applicable to this model.
 -
SWRL CONT S/V* On/Off The control condition of the intake manifold runner control valve (determined by ECM according to the input signals) is indicated.
  • ON: Closed
  • OFF: Open
 -
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. -
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. -
SET SW On/Off Indicates [On/Off] condition from SET - switch signal. -
RESUME/ACC SW On/Off Indicates [On/Off] condition from RES + 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 indicator determined by the ECM according to the input signals. -
CRUISE LAMP On/Off Indicates [On/Off] condition of CRUISE indicator determined by the ECM according to the input signals.  
A/GRLL SHTTR CALIBRATION INCMP/ CMPLT Indicates initial position learning status of active grille shutter.
  • CMPLT: The leaning is complete.
  • INCOMP: The learning is incomplete.
  
A/GRLL SHTTR CIRCUIT DIAG OK/NG Indicates the diagnosis result of active grille shutter circuit.
  • OK: Normal.
  • NG: Malfunction detected.
  
A/GRLL SHTTR TEMP DIAG OK/NG Indicates the diagnosis result of active grille shutter actuator temperature status.
  • OK: Normal.
  • NG: Abnormal temperature detected.
  
A/GRLL SHTTR OVER RUN OK/NG Indicates active grille shutter moves beyond normal moving limit.
  • OK: Normal.
  • NG: Malfunction detected.
  
A/GRLL SHTTR STUCK OK/NG Indicates the diagnosis result of active grille shutter stuck or the operation range less than normal.
  • OK: Normal.
  • NG: Malfunction detected.
  
A/GRLL SHTTR CALIB DIAG OK/NG Indicates the diagnosis result of initial position learning of active grille shutter.
  • OK: Normal.
  • NG: Deficiency detected.
  
HO2 S2 DIAG2 (B1) INCMP/CMPLT Indicates DTC P0139 self-diagnosis (slow response) 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.
  
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. -
ENG OIL TEMP °C °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.
  • Specification value is indicated on monitor screen under the following conditions.
    • Reference: Select
    • Display type: Line graph
MAP SENSOR V The atmospheric pressure sensor signal voltage is displayed.  
A/F S1 HTR (B1) %
  • Indicates the duty ratio of the Air fuel ratio (A/F) sensor 1 heater computed by ECM according to the input signals.
  • The current flow to the heater becomes larger as the value increases.
  
EXH/V TIM B1 °CA Indicates [°CA] of exhaust camshaft advance angle.  
EGR VALVE POSITION deg Indicates the EGR volume control valve angle  
FAN DUTY % Indicates a command value for cooling fan. The value is calculated by ECM based on input signals.  
THRTL STK CNT B1 -
NOTE: SYMBOL These items are displayed but are not applicable to this model.
  
A/GRLL SHTTR POSITION F/CLOSEMOVINGF/OPENUNIDTF Indicates the status of active grille shutter.
  • F/CLOSE: Active grille shutter is fully closed.
  • MOVING: Active grille shutter is in motion.
  • F/OPEN: Active grille shutter is fully opened.
  • UNIDTF: Unable to specify the shutter position.
  
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.
TRVL AFTER MIL km or mile Distance traveled while MIL is activated.  
B/FUEL SCHDL ms "Base fuel schedule" indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction. Specification value is indicated on monitor screen under the following conditions.
  • Reference: Select
  • Display type: Line graph
MASS AIRFLOW g/s Indicates the mass air flow computed by ECM according to the mass air flow sensor signal. -
FUEL PRES SEN Mpa Indicates the fuel rail pressure computed by ECM according to the input signals. -
ACCEL SEN 1 V The signal voltage of the accelerator pedal position sensor 1 is displayed. -
ACCEL SEN 2 V The converted value of 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.
TP SEN 1-B1 V The signal voltage of the throttle position sensor 1 B1 is displayed. -
TP SEN 2-B1 V The value converted from the signal voltage of the throttle position sensor 2 B1 is displayed. TP SEN 2-B1 signal is converted by ECM internally. Thus, they differs from ECM terminal voltage signal.
I/P PULLY SPD RPM Indicates the engine speed computed from the input shaft revolution signal. -
VEHICLE SPEED km/h or mph The vehicle speed computed from the vehicle speed signal sent from TCM is displayed. -
TUMBLE POS SEN V The intake manifold runner control valve position sensor signal voltage 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 voltage computed from the input signal of the air fuel ratio (A/F) sensor 1 is displayed. -
VHCL SPEED SE km/h or mph The vehicle speed computed from the vehicle speed signal sent from combination meter 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.
 -
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. -
H/P FUEL PUMP DEG deg Displays ECM-calculated fuel discharge position of the high pressure fuel pump. -
FUEL PRES SEN V mV The signal voltage of FRP sensor is displayed. -
EOP SENSOR mV The signal voltage of EOP sensor is displayed. -
ECM TEMP 1 °C Displays a temperature calculated from a signal of ECM temperature sensor 1. -
ECM TEMP 2 °C Displays a temperature calculated from a signal of ECM temperature sensor 2. -
Mass air flow sensor (HZ) B1 Hz The signal frequency of the mass air flow sensor is displayed. -
EGR VALVE POSITION SEN V The signal voltage of EGR volume control valve position sensor is displayed. -
TOTAL DISTNC-OCS RST 1 Km Total travel distance of odd meter when Oil Control System is reset. -
TOTAL DISTNC-OCS RST 2 Km Total travel distance of odd meter when Oil Control System is reset. (two times ago) -
TOTAL DISTNC-OCS RST 3 Km Total travel distance of odd meter when Oil Control System is reset. (three times ago) -
DETERIORTN VL -OCS RST 1 - Indicates deterioration condition of the engine oil when Oil Control System is reset. -
DETERIORTN VL -OCS RST 2 - Indicates deterioration condition of the engine oil when Oil Control System is reset. (two times ago) -
DETERIORTN VL -OCS RST 3 - Indicates deterioration condition of the engine oil when Oil Control System is reset. (two times ago) -
TOTAL DISTNC-OCS WRN 1 Km Total travel distance of odd meter when Oil Control System remaining distance is zero. -
TOTAL DISTNC-OCS WRN 2 Km Total travel distance of odd meter when Oil Control System remaining distance is zero. (two times ago) -
TOTAL DISTNC-OCS WRN 3 Km Total travel distance of odd meter when Oil Control System remaining distance is zero. (two times ago) -
DETERIORTN VL-OCS WRN 1 - Indicates deterioration condition of the engine oil when Oil Control System remaining distance is zero. -
DETERIORTN VL-OCS WRN 2 - Indicates deterioration condition of the engine oil when Oil Control System remaining distance is zero. (two times ago) -
DETERIORTN VL-OCS WRN 3 - Indicates deterioration condition of the engine oil when Oil Control System remaining distance is zero. (three times ago) -
CURRENT DETERIORATN VAN - Indicates deterioration condition of the engine oil. -
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 B1 INCMP/CMPLT Indicates DTC P219A self-diagnosis condition.
  • INCMP: Self-diagnosis is incomplete.
  • CMPLT: Self-diagnosis is complete.
 -
A/F SEN DIAG 1 (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 (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 B1 ABSNT/PRSNT Indicates DTC P219A self-diagnosis condition.
  • ABSNT: Self-diagnosis standby
  • PRSNT: Under self-diagnosis
 -
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.
 -
Ignition timing 2 deg Indicates the ignition timing computed by ECM according to the input signals.
NOTE: SYMBOL Indicates degree from BTDC (Before Top Dead Center) of compression stroke.
 -
Di timing SOI multi inj step1 BTDC These items are displayed but not used. -
Di inj pules B1 msec Indicates VCR control shaft 2 angle. -

WORK SUPPORT MODE 

Work Item 

Work item Condition Usage
FUEL PRESSURE RELEASE
  • Fuel pump will stop by touching "START" during idling.
  • Crank a few times after engine stops.
 When releasing fuel pressure from fuel line
TARGET IGN TIM ADJ Idle condition When adjusting target ignition timing
TARGET IDLE RPM ADJ Idle condition When setting target idle speed
SAVING DATA FOR REPLC CPU In this mode, save data that is in ECM. When ECM is replaced.
WRITING DATA FOR REPLC CPU In this mode, write data stored by "SAVE DATA FOR CPU REPLC" in work support mode to ECM. When ECM is replaced.
IDLE AIR VOL LEARN The idle air volume that keeps the engine speed within the specified range is memorized in ECM. When learning the idle air volume
CLSD THL POS LEARN Ignition switch ON and engine stopped. When learning the throttle valve closed position
SELF-LEARNING CONT The coefficient of self-learning control mixture ratio returns to the original coefficient. When clearing mixture ratio self-learning value.
VIN REGISTRATION In this mode, VIN is registered in ECM. When registering VIN in ECM
EGR control valve closed position learning Ignition switch ON and engine stopped. When learning the EGR volume control valve closed position
Electric intake valve timing control learning Ignition switch ON and engine stopped. After the following parts are replaced.
  • Electric intake valve timing control actuator
  • Electric intake valve timing control module
  • camshaft, timing chain, camshaft sprocket
  • piston, connecting rod, crankshaft
  • position sensor
EVAP SYSTEM CLOSE Close the EVAP canister vent control valve in order to make EVAP system close under the following conditions.
  • Ignition switch ON
  • Engine not running
  • Ambient temperature is above 0°C (32°F)
  • No vacuum and no high pressure in EVAP system
  • Fuel tank temperature is more than 0°C (32°F)
  • Within 10 minutes after starting "EVAP SYSTEM CLOSE"
  • When trying to execute "EVAP SYSTEM CLOSE" under the condition except above, CONSULT will discontinue it and display appropriate instruction
NOTE: SYMBOL When starting engine, CONSULT may display "Battery voltage is low. Charge battery", even in using charged battery.
 When detecting EVAP vapor leak point of EVAP system
Misfire count (real-time) These items are displayed but not used. -
Misfire count (past) These items are displayed but not used. -
Stop/Start prohibit cause data recorder Ignition switch: ON (Engine stopped) -
Stop/Start engine restart cause data recorder Ignition switch: ON (Engine stopped) -
Stop/Start engine stall cause data recorder Ignition switch: ON (Engine stopped) -

ACTIVE TEST MODE 

Test Item 

TEST ITEM CONDITION JUDGMENT CHECK ITEM (REMEDY)
ENG COOLANT TEMP Change the engine coolant temperature using CONSULT. If malfunctioning symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Engine coolant temperature sensor
  • Fuel injector
FUEL INJECTION Change the amount of fuel injection using CONSULT. If malfunctioning symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Fuel injector
  • Air fuel ratio (A/F) sensor 1
IGNITION TIMING
  • Timing light: Set
  • Retard the ignition timing using CONSULT.
 If malfunctioning symptom disappears, see CHECK ITEM. Perform Idle Air Volume Learning.
PURG VOL CONT/V
  • Engine: After warming up, run engine at 1, 500 RPM.
  • Change the EVAP canister purge volume control solenoid valve opening percent using CONSULT.
 Engine speed changes according to the opening percent.
  • Harness and connectors
  • EVAP canister purge volume control solenoid valve
POWER BALANCE
  • Engine: After warming up, idle the engine.
  • A/C switch OFF
  • Selector lever: N position (CVT models), Neutral position (M/T models)
  • Cut off each injector signal one at a time using CONSULT.
 Engine runs rough or stops. (Works for accidental fire.)
  • Harness and connectors
  • Compression
  • Fuel injector
  • Power transistor
  • Spark plug
  • Ignition coil
INT V/T ASSIGN ANGLE Changes intake valve timing using CONSULT. If malfunctioning symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Intake valve timing control solenoid valve
EXT V/T ASSIGN ANGLE Changes exhaust valve timing using CONSULT. If malfunctioning symptom disappears, see CHECK ITEM.
  • Harness and connectors
  • Exhaust valve timing control solenoid valve
EGR CONTROL VALVE
  • Ignition switch: ON (Engine stopped)
  • EGR volume control valve opening changes using CONSULT.
 EGR volume control valve changes according to the target valve opening (0° - 70°)
  • Harness and connectors
  • EGR volume control valve
FAN DUTY CONTROL*
  • Ignition switch: ON
  • Change duty ratio using CONSULT.
 Cooling fan speed changes.
  • Harness and connectors
  • Cooling fan motor
  • IPDM E/R
ACTIVE GRILLE SHUTTER
NOTE: SYMBOL Initial position learning is required every time when the ignition switch is turned OFF.
  1. Engine: Idle speed
  2. Touch "CALIBRTN" to perform initial position learning.
  3. Touch "OPEN" or "CLOSE" to operate active grille shutter.
 Active grille shutter fully opens or fully closes.
  • Harness or connector
  • Active grille shutter actuator
  • Active grille shutter
FUEL PUMP RELAY
  • Ignition switch: ON (Engine stopped)
  • Turn the fuel pump relay "ON" and "OFF" using CONSULT and listen to operating sound.
 Fuel pump relay makes the operating sound.
  • Harness and connectors
  • Fuel pump relay
TUMBLE CONTROL VALVE
  • Ignition switch: ON (Engine stopped)
  • Turn the intake manifold runner control valve "ON" and "OFF" using CONSULT to open or close.
 Touch the intake manifold runner control valve motor and check the operating vibration and sound.
  • Harness and connectors
  • Intake manifold runner control valve
  • Intake manifold runner control valve motor
FUEL /T TEMP SEN Change the fuel tank temperature using CONSULT.
VENT CONTROL VALVE
  • Ignition switch: ON (Engine stopped)
  • Turn EVAP canister vent control valve ON and OFF with the CONSULT and listen to operating sound.
 EVAP canister vent control valve makes an operating sound.
  • Harness and connectors
  • EVAP canister vent control valve

*: Leaving cooling fan OFF With CONSULT: while engine is running may cause the engine to overheat.

DTC WORK SUPPORT MODE 

Teat Item 

Test mode Test item Corresponding DTC No. Reference
HO2S2 HO2S2 (B1) P1146 P0138 DTC Description
HO2S2 (B1) P1147 P0137 DTC Description
HO2S2 (B1) P0139 P0139 DTC Description
A/F SEN1 A/F SEN1 (B1) P1276 P0130 DTC Description
EVAPORATIVE SYSTEM PURG FLOW P0441 P0441 DTC Description
PURG VOL CN/V P1444 P0443 DTC Description

SRT and P-DTC MODE 

SRT STATUS Mode 

PERMANENT DTC STATUS Mode 

How to Display Permanent DTC Status

  1. Turn ignition switch OFF and wait at 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at 10 seconds.
  4. Turn ignition switch ON.
  5. Select "PERMANENT DTC STATUS" in "DTC and SRT CONFIRMATION" mode With CONSULT:
    NOTE: SYMBOL Permanent DTCs stored in control module memory are displayed on the CONSULT screen to show if a driving pattern required for erasing permanent DTCs is complete (CMPLT) or incomplete (INCMP).
    CAUTION:

    Since the "PERMANENT DTC STATUS" screen displays the previous trip information, repeat the following twice to update the information: "Ignition switch OFF", "Wait for more than 10 seconds" and "Ignition switch ON".

    GNSDB34959Courtesy of NISSAN
NOTE: SYMBOL This mode is not used in regions that permanent DTCs are not regulated by law.

SRT WORK SUPPORT Mode 

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

PERMANENT DTC WORK SUPPORT Mode 

This mode enables a technician to drive a vehicle to complete the driving pattern that is required for erasing permanent DTC.

NOTE: SYMBOL This mode is not used in regions that permanent DTCs are not regulated by law.

SRT and P-DTC MODE 

SRT STATUS Mode 

For items whose SRT codes are set, "CMPLT" is displayed on the CONSULT screen; for items whose SRT codes are not set, "INCMP" is displayed.

SRT WORK SUPPORT Mode 

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

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