POWER TRUNK LID SYSTEM

FUNCTION OF MAIN COMPONENTS

The main components of the luggage compartment door closer system have the following functions:

Component		Function
Main Body ECU (Multiplex Network Body ECU)		When the luggage door opener switch is pressed, the main body ECU (multiplex network body ECU) transmits a signal to the luggage closer motor assembly.
Luggage Closer Motor Assembly	Multiplex Network Door ECU	Controls the power trunk lid system in accordance with the signals received from the switches and ECUs.
	Luggage Closer Motor	Opens and closes the luggage compartment door when actuated by the luggage closer motor assembly.
	Buzzer	The buzzer sounds once, when the luggage door closer switch is pushed.
Certification ECU (Smart Key ECU Assembly)		Sends an open signal to the main body ECU (multiplex network body ECU).
ECM		Sends a shift lever P signal to the main body ECU (multiplex network body ECU).
Brake Actuator Assembly	Skid Control ECU	Sends the stop light switch assembly on signal to the main body ECU (multiplex network body ECU).
Combination Meter Assembly		Sends a vehicle speed signal to the main body ECU (multiplex network body ECU).
Luggage Door Opening Switch Assembly		Sends an on signal to the main body ECU (multiplex network body ECU) to automatically open the luggage compartment door from the cabin.
Luggage Door Closer Switch		Sends an on signal to the luggage closer motor assembly to automatically close the luggage compartment door from the outside.
Luggage Electrical Key Switch		Sends an on signal to the certification ECU (smart key ECU assembly) to automatically open the luggage compartment door from the outside.
Electrical Key Transmitter Sub-assembly		Sends a luggage compartment door opener switch on signal to the door control receiver.
Luggage Door Opening Cancel Switch Assembly		Setting this switch to off prohibits system operation. Even when the switch is off, the power trunk lid system can be closed.
Luggage Door Closer Assembly	Luggage Door Closer Motor	In accordance with the signals received from the switches, the luggage door closer assembly automatically closes the luggage compartment door that is ajar to the fully closed state. This is accomplished by actuating the motor to push and turn the latch in order to pull the striker in. Upon receiving the open signals from the switches, the system actuates the motor to disengage the latch. As a result, the striker disengages from the latch, enabling the luggage compartment door to open.
Door Control Receiver		Sends the luggage compartment door opener switch on signal received from the electrical key transmitter sub-assembly to the certification ECU (smart key ECU assembly).
Wireless Door Lock Buzzer		Sounds once when the luggage compartment door is opened using the electrical key transmitter sub-assembly.

OPERATING CONDITION

The operating conditions of the luggage compartment door opener system are as follows:

Operation	Condition
Luggage Compartment Door Open	When the luggage compartment door is closed and any of the following conditions is met, the luggage compartment door can be opened by pressing the luggage door opening switch assembly or luggage electrical key switch: The engine switch is off. The engine switch is on (IG), vehicle speed is approx. 3 km/h (approx. 2 mph) or less and shift lever is in P. The engine switch is on (IG), vehicle speed is approx. 3 km/h (approx. 2 mph) or less and brake pedal is depressed. The engine switch is on (IG), vehicle speed is approx. 3 km/h (approx. 2 mph) or less and parking brake is engaged. The user is inside the exterior actuation area around the luggage compartment door while holding the electrical key transmitter sub-assembly.

Operation

Condition

Luggage Compartment Door Open

When the luggage compartment door is closed and any of the following conditions is met, the luggage compartment door can be opened by pressing the luggage door opening switch assembly or luggage electrical key switch:

The engine switch is off.
The engine switch is on (IG), vehicle speed is approx. 3 km/h (approx. 2 mph) or less and shift lever is in P.
The engine switch is on (IG), vehicle speed is approx. 3 km/h (approx. 2 mph) or less and brake pedal is depressed.
The engine switch is on (IG), vehicle speed is approx. 3 km/h (approx. 2 mph) or less and parking brake is engaged.
The user is inside the exterior actuation area around the luggage compartment door while holding the electrical key transmitter sub-assembly.

CONSTRUCTION

Luggage Closer Motor Assembly

The luggage closer motor assembly mainly consists of the luggage closer motor assembly, luggage closer motor, gear, and arm.
The luggage closer motor assembly moves the luggage compartment hinge assembly RH by driving the luggage closer motor to rotate the arm, thus opening and closing the luggage compartment door.

The luggage closer motor mainly consists of a motor, a magnet clutch and a Hall IC. The Hall IC detects the position of the 64-pole magnet installed on the outer circumference of the magnet clutch. The detected result is input to the luggage closer motor assembly, which judges the speed, position and opening and closing directions of the luggage compartment door.

Text in Illustration
*1	Arm	*2	Luggage Closer Motor
*3	Luggage Closer Motor Assembly	*4	Luggage Compartment Hinge Assembly RH

OPERATION

Opener Function
1. When the luggage door opening cancel switch assembly is on and any of the operation conditions are met while the luggage compartment door is fully closed, the opening operation of the luggage compartment door is performed by pressing the luggage door opening switch assembly, the luggage electrical key switch or the luggage compartment door opener switch of the electrical key transmitter sub-assembly.
2. The open function operates as follows:
  1. When the open function operation has started, the magnet clutch in the luggage closer motor assembly is turned on and the luggage door closer motor in the luggage door closer assembly is driven counterclockwise to release the latch.
  2. When detecting that the half switch has turned from off to on, the luggage closer motor in the luggage closer motor assembly is driven in the opening direction to open the luggage compartment door.
  3. The closer pulse detects the end point of the closer gear to stop the luggage door closer motor.
  4. When the luggage compartment door is opened more than a certain amount by the door pulse signal, the luggage door closer motor starts to drive clockwise.
  5. When the closer pulse detects the neutral position of the closer gear, it stops the operation of the luggage door closer motor.
  6. After the door pulse signal has detected the fully opened position of the luggage compartment door, the magnet clutch turns off and the drive of the luggage closer motor stops. Thereafter, the luggage compartment door maintains its fully-opened position by the reaction force of the torsion bar spring.
Closer Function
1. When the luggage door closer switch is pressed while the luggage compartment door is fully open, the closing operation of the luggage compartment door is performed.
2. The closer function operates as follows:
  1. When the closer function has started, the buzzer in the luggage closer motor assembly sounds once, the magnet clutch in the luggage closer motor assembly is turned on and the luggage closer motor is driven in the closing direction, thus closing the luggage compartment door.
  2. When detecting that the half switch in the luggage door closer assembly has turned from on to off, it stops the luggage closer motor and drives the luggage door closer motor clockwise to start the closing operation.
  3. When detecting that the pawl switch is off, the magnet clutch is turned off.
  4. After the closer function detects that the closer pulse signal is in the neutral position of the closer gear, the luggage door closer motor stops and the luggage compartment door is fully closed to complete the operation.
Jam Protection Function
1. The luggage closer motor assembly determines the jamming of the trunk lid system upon receiving the signals from the Hall ICs.
2. The luggage closer motor assembly determines the luggage compartment door movement distance and the luggage compartment door opening/closing speed (door foreign object jamming) via the pulse signals from the Hall IC, and the luggage compartment door position (door movement direction) from the phase difference between the pulses from Hall IC 1 and Hall IC 2.
3. If a foreign object gets jammed during opening or closing of the power trunk lid, the pulse width of the output signal from Hall IC1 changes. The luggage closer motor assembly interprets this as jamming, it stops the luggage closer motor if the luggage compartment door is performing an open operation. If the luggage compartment door is performing a close operation, the ECU reverses the motor rotating direction.

DIAGNOSIS

When the luggage closer motor assembly detects a malfunction, the luggage closer motor assembly stores information related to the fault.
The luggage closer motor assembly will also store the malfunction information in the form of 5-digit Diagnostic Trouble Codes (DTCs). The DTCs can be read by using the Global TechStream (GTS). For details, refer to the Repair Manual.