The lower tail gate lock, built into the lower tail gate, sends an open/close condition signal to the No. 2 main body ECU and an open/close operation is performed by operating the lower tail gate lock motor LH and RH.
4 switches are built into the lower tail gate lock, and the No. 2 main body ECU monitors the status of each switch. The ECU controls latch "release/close" operations in response to the inputs from each switch.
| Switch | Function |
| Lower tail gate courtesy switch | Detects whether lower tail gate is open or closed. This switch turns on when lower tail gate is open or ajar and turns off when it is fully closed. |
| Half-latch switch | Detects ajar position of latch. This switch turns on when latch is in open-latch position. |
| Pawl switch | Detects the tail gate position. |
| Close position switch | Detects fully closed position of latch. This switch turns on when latch is in over-latch position. |