1.Safety arm(7)cannot be safe by manual ：because among all of the 4 lock bodies of this type of vehicle, left front door lock has an error-proof locking device, only at the condition of big bolt(5) at full closed position ,the lock can be full latched(means at safety position)

2.L/R rear door lock cannot unlock：check if the child safety arm (10) at unlock position(shown as picture),if at unlock, please move the arm from up to the lower shift(means released condition),then you can unlock the door.

3.No actions when use remote key to control the 4 locks ：check if the battery of remote key/vehicle itself is enough; check if the vehicle body harness and lock body(8)were assembled correctly; can use mechanical key to manual turn the left front door lock core(socket 1) anticlockwise, release the safety condition, then pull the outer handle to unlock the door, make further check.   

4.Auto latch cannot full latch ：Check if the vehicle power is on or not, and to see if vehicle connector was docked with lock assembly connector(3),if completely mating and power on perfectly; when use great force to close the door, it can be full latched, then make a further check.

5.Safety can be opened and closed normally, but cannot unlock the door either inner or outer handle：Check the cable clip of inner/outer handle was connected with lock body correctly, check the inner handle arm (9) /outer handle arm (2) was flexible when moved, return back is okay or not.                                                                  

6.Electrically controlled pull-in action, but cannot be fully locked: please remove the external cable connected with (2), and then test whether the self-priming function is normal, if normal, please check whether the external cable connector is loose and reassembled in place.