VEHICLE DOOR LATCH SYSTEM AND METHOD

摘要

A door latch system for a vehicle having a front door and a back door includes electric latch mechanisms associated with each door. Open switches are associated with each door to request opening of the doors. Lock switches are associated with each door to request locking and unlocking of the doors. An override switch is associated with the front passenger door and configured to send at least one of an override signal and an enabled signal. A controller prevents unlocking of the doors using the lock switches associated with the back doors unless the back door is open.

主权项

1. A method of operating an electric door latch mechanism of a vehicle having a front passenger door and a back passenger door, the mechanism movable between a latched position in which the back passenger door is secured and an unlatched position in which the back passenger door is openable, a back open switch associated with the back passenger door, a front lock switch associated with the front passenger door, a back lock switch associated with the back passenger door, an override switch associated with the front passenger door, and a controller in communication with the switches and the mechanism, said method comprising:
receiving a door unlock signal from at least one of the front lock switch and the back lock switch; receiving an enabled signal from the override switch; assigning the unlocked state to the back open switch in response to receiving the unlock signal from the front lock switch; assigning the unlocked state to the back open switch in response to receiving the unlock signal from the back lock switch and receiving an enabled signal from the lock state override switch; moving the electric door latch mechanism to the unlatched position in response to receiving an open request from the back open switch if the back open switch is assigned the unlocked state.