Work Support Mode

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 deg. C (32 deg. F).
• NO VACUUM AND NO HIGH PRESSURE IN EVAP SYSTEM
• FUEL TANK TEMP. IS MORE THAN 0 deg. C (32 deg. 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 WHEN USING A CHARGED BATTERY.

When detecting EVAP vapor leak 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 IDLE RPM ADJ*

• IDLE CONDITION

When setting target idle speed

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

VVEL POS SEN ADJ PREP

• USE THIS ITEM ONLY WHEN REPLACING VVEL ACTUATOR SUB ASSEMBLY.
• IGNITION ON AND ENGINE STOPPED.

When adjusting VVEL control shaft position sensor

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.

ENGINE COOLANT BYPASS VALVE

Condition: The valve is in the full opening position

When filing with coolant.