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Home >> Infiniti >> 2009 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction >> Function Diagnosis >> On Board Diagnostic (OBD) System >> CONSULT-III Function (ENGINE) >> Work Support Mode
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Work Support Mode

Work Item

WORK SUPPORT MODE REFERENCE CHART

WORK ITEM CONDITION USAGE
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
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
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
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-III WILL DISCONTINUE IT AND DISPLAY APPROPRIATE INSTRUCTION.
    NOTE: WHEN STARTING ENGINE, CONSULT-III MAY DISPLAY "BATTERY VOLTAGE IS LOW. CHARGE BATTERY", EVEN IN USING CHARGED BATTERY.
 When detecting EVAP vapor leak point of EVAP system
VIN REGISTRATION
  • IN THIS MODE, VIN IS REGISTERED IN ECM
 When registering VIN in ECM
TARGET IDLE RPM ADJ(1)
  • IDLE CONDITION
 When setting target idle speed
TARGET IGN TIM ADJ(1)
  • IDLE CONDITION
 When adjusting target ignition timing
(1) This function is not necessary in the usual service procedure.
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