Sliding Door Hold-Open Latch: Description and Operation

Removing/Installing Power Latch In Sliding Door:

One power latch is used for each power sliding door. The latch is located on the trailing edge of the sliding door assembly. This power latch assembly is comprised of many different components which have the ability to perform the power cinch, release, lock, unlock and safety related operations. These components are the door latch, lock/unlock actuator, cinch/release actuator and child lockout, pawl, ratchet and handle switches. The pawl and ratchet switches are used to indicate the primary and secondary latched positions. The cinch latch also provides a connection point for the interior handle, exterior handle and hold open latch cables. If any of the components of the latch assembly are inoperative the complete power latch assembly must be replaced.

The power latch performs the same operation as a full manual door latch as well as power cinch, release, lock and unlock operations. The power latch mounted actuator cinches the door closed and latches it in its primary latched position. During a power close cycle, the power cinch actuator will not operate until the power sliding door has reached its secondary latch position (determined by pawl and ratchet switches). During a power open cycle, the power release actuator will stop once the sliding door has moved from the primary latch position.

The power latch uses inputs from the lock/unlock actuator, power sliding door control module and child lockout, pawl, ratchet and handle switches to provide safe power cinch and release operations.