Motor vehicle door external opening control (2; 102) comprising: - a support (6; 106); - a handle mounted on the support, capable of pivoting in an opening direction to control a lock of the opening leaf with a view to opening said opening leaf; - a locking system (18; 118) mounted on the support (6; 106), with a movable inertial element (20; 120) able to move in the event of an acceleration to which the opening control is subjected from a rest position to a blocking position so as to block the control of said lock by said handle when said inertial element is in the blocking position; - a protective barrier (32; 132) for the movable inertial element (20; 120), located on one side of said element which is opposite the direction of opening of the handle, said barrier (32; 132) protecting said element from manipulation by an operator for mounting the control on the door; - an arm (14; 114) pivotally mounted on the support (6; 106) cooperating with the handle so as to be moved by said handle and comprising a fixing area (16; 116) of a lock control cable, the movable inertial element (20; 120) of the locking system (18; 118) being configured to cooperate directly with said arm when locking the lock control; the locking system (8; 118) comprises automatic holding means (26; 126) for holding the inertial element (20; 120) movable in its locking position, said automatic holding means (26; 126) comprising an elastic tongue (28; 128) and a lug (30; 130) on the mobile inertial element (20; 120) capable of deforming the tongue (28; 128) and coming into abutment with an edge of said tongue wherein the protective barrier is formed by a plate adjacent to the tongue, fixed to the support, the protective barrier supports one end of a pivot of the arm pivotally mounted on the support. - a support (6; 106); - a handle mounted on the support, capable of pivoting in an opening direction to control a lock of the opening leaf with a view to opening said opening leaf; - a locking system (18; 118) mounted on the support (6; 106), with a movable inertial element (20; 120) able to move in the event of an acceleration to which the opening control is subjected from a rest position to a blocking position so as to block the control of said lock by said handle when said inertial element is in the blocking position; - a protective barrier (32; 132) for the movable inertial element (20; 120), located on one side of said element which is opposite the direction of opening of the handle, said barrier (32; 132) protecting said element from manipulation by an operator for mounting the control on the door; - an arm (14; 114) pivotally mounted on the support (6; 106) cooperating with the handle so as to be moved by said handle and comprising a fixing area (16; 116) of a lock control cable, the movable inertial element (20; 120) of the locking system (18; 118) being configured to cooperate directly with said arm when locking the lock control; the locking system (8; 118) comprises automatic holding means (26; 126) for holding the inertial element (20; 120) movable in its locking position, said automatic holding means (26; 126) comprising an elastic tongue (28; 128) and a lug (30; 130) on the mobile inertial element (20; 120) capable of deforming the tongue (28; 128) and coming into abutment with an edge of said tongue wherein the protective barrier is formed by a plate adjacent to the tongue, fixed to the support, the protective barrier supports one end of a pivot of the arm pivotally mounted on the support.