System Description

FUEL LID OPENER COMPONENTS

Fuel Lid Opener Switch	Detects fuel lid opener switch operation and sends fuel lid open request signal to the ECM.
Fuel Lid Courtesy Switch	Sends the fuel lid open/close status signal to the ECM.
Fuel Lid Opener Motor Assembly	Actuates to open the fuel lid according to signal from the ECM.
ECM	When the ECM receives a signal from the fuel lid opener switch, it actuates the fuel lid opener motor. Inputs a signal from the fuel tank pressure sensor. When the fuel tank internal pressure exceeds 1.76 kPa, the hybrid vehicle control ECU operates the fuel vapor containment valve. Detects status of the fuel lid courtesy switch.
Multi-information Display	The operating state of fuel lid opener system is displayed on the multi-information display.

FUEL LID OPENER SYSTEM FUNCTION
1. When the fuel lid opener switch is pressed, a fuel lid open request signal is sent to the hybrid control ECU, and the fuel lid opener motor actuates to open the fuel lid.
  HINT:
  
  When the fuel tank internal pressure exceeds 1.76 kPa, the fuel vapor containment valve is used to adjust the pressure. If the fuel tank internal pressure is 4.0 kPa or more, "PLEASE WAIT NOW OPENING" is displayed on the multi-information display. If the fuel tank internal pressure is greater than 1.76 kPa, the multi-information display will remain off until the fuel tank internal pressure drops to 1.76 kPa, at which point the multi-information display will show "REFUEL READY".
  NOTE:
  - If the fuel tank pressure sensor or fuel vapor containment valve is malfunctioning, the fuel lid does not open.
  - If the fuel lid courtesy switch is malfunctioning, "CLOSE FUEL LID" is displayed on the multi-information display even if the fuel lid is closed.
  Fig 1: Multi-Information Display Flowchart (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 2: Multi-Information Display Flowchart (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Normal operation (Fuel tank pressure 4 kPa or more):
    
    Fig 3: Fuel Tank Pressure Graph
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Normal operation (Fuel tank pressure less than 4 kPa)
    
    Fig 4: Fuel Tank Pressure Graph
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

MULTI-INFORMATION DISPLAY OPERATION

Multi-information display operation:

Fig 5: Multi-Information Display Operation Diagram

GTY180109

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Display	Details	Condition	Condition to switch to next display	Next display
PLEASE WAIT NOW OPENING	Wait time until the fuel tank pressure drops to the specified value Wait time until the fuel lid is opened	Fuel lid opener switch ON Fuel vapor containment valve open Fuel tank pressure 4 kPa or more (Initial value)	Fuel tank pressure less than 1.76 kPa	REFUEL READY
REFUEL READY	Ready for refueling	Until any of the conditions listed on the right are met.	When 5 seconds or more elapse after fuel lid CLOSE (Fuel lid courtesy switch ON)	OFF
REFUEL READY	Ready for refueling	Until any of the conditions listed on the right are met.	The fuel vapor containment valve remains ON for 30 min. The vehicle is driven for 1 km or more at 50 km/h or more	CLOSE FUEL LID
CLOSE FUEL LID	Fuel lid open	Fuel lid open: While the ignition switch is ON For 5 min. after the ignition switch is turned off	Fuel lid CLOSE (Door control switch ON)	OFF