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Home >> Nissan-Datsun >> 2014 >> Altima Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System (Introduction) (VQ35DE)) >> System Description >> Diagnosis System (ECM) >> Diagnosis Description >> CONSULT Function >> Work Support Mode

Work Support Mode

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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.
  • 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: When starting engine, CONSULT may display "BATTERY VOLTAGE IS LOW. CHARGE BATTERY", even in using charged battery.
 When detecting EVAP vapor leakage in the 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 mixture ratio self-learning value
TARGET IGN TIM ADJ(1) Idle condition When adjusting target ignition timing
TARGET IDLE RPM ADJ(1) Idle condition When setting target idle speed
VIN REGISTRATION In this mode, VIN is registered in ECM When registering VIN in ECM
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 replaced.
WRITING DATA FOR REPLC CPU In this mode, write data stored by "SAVING DATA FOR REPLC CPU" in work support mode to ECM. When ECM replaced.
(1) This function is not necessary in the usual service procedure.
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