LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2015 >> Leaf SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Engine Control System (Introduction)) >> VK56DE >> System Description >> Diagnosis System (ECM) >> Consult Function >> Work Support Mode
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Work Support Mode

WARNING: This page is about a different car, the 2015 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

WORK ITEM 

WORK ITEM  CONDITION  USAGE 
IDLE AIR VOL LEARN
  • THE IDLE AIR VOLUME THAT KEEPS THE ENGINE WITHIN THE SPECIFIED RANGE IS MEMORIZED IN ECM.
 When learning the idle air volume
EVAP SYSTEM CLOSE CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE FOLLOWING CONDITIONS.
  • IGN SW ON
  • ENGINE NOT RUNNING
  • AMBIENT TEMPERATURE IS ABOVE 0°C (32°F).
  • NO VACUUM AND NO HIGH PRESSURE IN EVAP SYSTEM
  • FUEL TANK TEMP. 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:

    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
FUEL PRESSURE RELEASE
  • FUEL PUMP WILL STOP BY TOUCHING "START" DURING IDLING.

    CRANK A FEW TIMES AFTER ENGINE STALLS.

 When releasing fuel pressure from fuel line
SELF-LEARNING CONT
  • THE COEFFICIENT OF SELF-LEARNING CONTROL MIXTURE RATIO RETURNS TO THE ORIGINAL COEFFICIENT.
 When clearing the coefficient of self-learning control value
TARGET IDLE RPM ADJ*
  • IDLE CONDITION
 When setting target idle speed
ETHANOL M/R ADJ*2
  • THIS FUNCTION ALLOWS THE ETHANOL MIXTURE RATIO THAT THE ECM ESTIMATED TO BE CHANGED.

    IMPROPER USAGE OF THIS FUNCTION MAY CAUSE POOR DRIVEABILITY OR DECREASING FUEL ECONOMY. FOLLOW THE INSTRUCTION OF SERVICE MANUAL.

 When adjusting the ethanol mixture ratio to the specified value.
VIN REGISTRATION
  • IN THIS MODE, VIN IS REGISTERED IN ECM
 When registering VIN in ECM
TARGET IGN TIM ADJ*
  • IDLE CONDITION
 When adjusting target ignition timing
CLSD THL POS LEARN
  • Ignition on and engine stopped.
 When learning the throttle valve closed position
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.

*1: This function is not necessary in the usual service procedure.

*2: For Flexible Fuel Vehicle

scientia non olet · About LEMON Manuals