System Description

TRUNK LID AUTO CLOSURE SYSTEM

System Description

- Trunk lid auto closure system consists of trunk room lamp switch, striker switch, trunk closure motor and trunk closure control unit that integrates stop switch.
- Trunk lid auto closure system is a system that fully closes trunk lid automatically when it is closed partly.
- Trunk lid striker is in the bottom position while trunk lid is in fully closed state. When trunk lid is open for next closure operation, waiting operation is performed so that trunk lid striker returns to the top position.
NOTE:
When battery terminal is re-connected, trunk closure motor is not operated regardless of trunk lid state (trunk room lamp switch and striker switch) and trunk lid striker position (stop switch).

TRUNK LID CLOSE OPERATION

From fully Open to Fully Closed Operation
The trunk lid closure system operates as per the following.





1.While trunk lid is open, trunk room lamp switch, striker switch, and stop switch are ON.
2.When closing trunk lid partly, trunk lid lock assembly and trunk lid striker are engaged and trunk room lamp switch turns OFF.
3.Module in trunk closure control unit, when it detects that trunk room lamp switch turns OFF, activates trunk closure motor and trunk lid striker starts to move downward.
When trunk lid striker lowers, striker switch turns OFF from ON.
4.When trunk lid striker reaches the bottom position and stop switch turns OFF, trunk closure motor stops and trunk lid close operation is complete.
NOTE:
- Operation of trunk closure motor is continued and trunk lid striker returns to the TOP position, if engagement of trunk lid lock assembly and trunk lid striker is released (trunk room lamp switch, striker switch: OFF->ON) when trunk lid striker reaches the bottom position (stop switch: ON->OFF).
- Operation of trunk closure motor is stopped if the bottom position of trunk lid striker is detected (stop switch: ON->OFF) and trunk room lamp switch or striker switch is OFF when trunk lid open and close operation (trunk room lamp switch: ON->OFF->ON->OFF) is performed again immediately after closing trunk lid from open state and trunk closure motor is operated.

WAITING OPERATION (TRUNK LID OPEN OPERATION)

From fully Closed to Fully Open Operation
The trunk lid closure system operates as per the following.





1.While trunk lid is closed, trunk room lamp switch, striker switch, and stop switch are OFF.
2.When performing trunk lid open operation, engagement of trunk lid lock assembly and trunk lid striker is released and trunk room lamp switch turns ON. When trunk lid is open, striker switch turns ON.
3.Module in trunk closure control unit, when it detects that trunk room lamp switch and striker switch turns
ON, activates trunk closure motor and trunk lid striker starts to move upward.
4.When trunk lid striker reaches to the top position and stop switch turns ON, trunk closure motor stops and waiting operation (trunk lid open operation) is complete.
NOTE:
- Operation of trunk closure motor is continued and trunk lid striker is moved to the bottom position, if engagement of trunk lid lock assembly and trunk lid striker is detected (trunk room lamp switch: OFF) when trunk lid striker reaches the top position (stop switch: OFF->ON).
- Operation of trunk closure motor is stopped if the top position of trunk lid striker is detected (stop switch: OFF->ON) and trunk room lamp switch is ON when trunk lid open and close operation (trunk room lamp switch: OFF->ON->OFF->ON) is performed again immediately after opening trunk lid from closed state.
- When striker switch OFF is detected while trunk lid striker moves upward, trunk closure motor stops. After that, when striker switch ON is detected, trunk closure motor restarts and performs ordinary upward operation. If striker switch ON is not detected and trunk room lamp switch OFF is detected, trunk closure motor performs ordinary downward operation.

OPERATION CONDITION

Trunk lid auto closure system operates when all of the following conditions are satisfied.






FAIL-SAFE

The fail-safe function is adopted for the trunk closure control unit. Refer to "Fail-safe" Trunk Closure Control Unit.