Home Vehicle Exterior Door/Hatch TAIL GATE CLOSER SYSTEM
Last Modified: 11-27-2007 1.6 D
Service Category: Vehicle Exterior Section: Door/Hatch
Model Year: 2008 Model: LX570 Doc ID: RM000003EUG000X
Title: DOOR / HATCH: TAIL GATE CLOSER SYSTEM: SYSTEM DESCRIPTION (2008 LX570)

SYSTEM DESCRIPTION

1. TAIL GATE CLOSER SYSTEM DESCRIPTION

(a) 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.

(b) The latch is opened by the back door remote control so that the lower tail gate can be opened.

(c) 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.

2. FUNCTION OF MAIN FUNCTIONS

Component

Function

Back door remote control

When the back door remote control is operated and a back door remote control signal is sent, the No. 2 main body ECU performs the lower tail gate open operation.

Lower tail gate lock

Receives an operation signal from the No. 2 main body ECU to open/close the lower tail gate. Also detects the lower tail gate position signal through the built-in close position switch, half-latch switch and lower tail gate courtesy switch.

Combination meter

Sends the vehicle speed signal to the No. 2 main body ECU via CAN communication.