Trunk/Liftgate Sensor/Switch (For Alarm): Description and Operation

Luggage Compartment Door Key Lock and Unlock Switch Circuit
The luggage compartment door courtesy switch goes ON when luggage compartment door is opened and goes OFF when the luggage compartment door is closed.

Luggage Compartment Door Courtesy Switch Circuit
The luggage compartment door courtesy switch goes ON when luggage compartment door is opened and goes OFF when the luggage compartment door is closed.

Luggage Compartment Door Opener Main Switch and Opener Switch Circuit
The luggage compartment door opener main switch is OFF when it is pushed in, and the luggage compartment door opener switch is ON when it is pulled.
The ECU energizes the luggage compartment door opener solenoid only when the main switch and opener switch are ON together.