Control Of Locking Operation

Fig 1: Keyless Operation System Locking Operation Pattern

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

KOS-ECU detects the lock/unlock switch ON signal of door outside handle (driver's side, front passenger's side) or the lock switch ON signal of liftgate lock release handle.
NOTE: When KOS-ECU detects the lock/unlock switch ON signal of door outside handle (driver's side, front passenger's side) or the lock switch ON signal of liftgate lock release handle, KOS-ECU judges the lock prohibition condition. When the lock prohibition condition is met, the locking operation is terminated.
KOS-ECU transmits the exterior data from the outside transmission antenna assembly on the operation side. At the same time, KOS-ECU transmits the interfering radio wave (reversal code) from the outside transmission antenna assembly on the other side. (The interfering radio wave will be transmitted from the front passenger-side antenna assembly when the driver-side door outside handle is operated, and vice versa. It will not be transmitted when the liftgate lock release handle is operated.)
NOTE: *: The interfering radio wave is transmitted to disable the door locking/unlocking operation performed by a person without the keyless operation key while a user with the keyless operation key is operating from the opposite side of the vehicle.
After the exterior data are transmitted from the outside transmission antenna assembly, the interior data are transmitted from the inside transmission antenna assembly (front, rear).
After the specified time (varies with the number of keyless operation keys registered in KOS-ECU) has elapsed, a confirmation is made that there is no keyless operation key located inside the vehicle.
- When KOS-ECU receives the response from the keyless operation key that received the interior data, KOS-ECU terminates the process without performing the locking operation.
KOS-ECU transmits the interior data from the inside transmission antenna assembly (front, rear).
After the specified time (varies with the number of keyless operation keys registered in KOS-ECU) has elapsed, a confirmation is made if the lock conditions are met.
- When KOS-ECU receives the response from the keyless operation key that received the interior data, KOS-ECU terminates the process without performing the locking operation.
- When all the responses from the registered keyless operation key are the exterior data only, KOS-ECU transmits the lock request to ETACS-ECU. Also, KOS-ECU transmits the keyless operation key number to ETACS-ECU.
  NOTE: When multiple keyless operation keys responded, KOS-ECU transmits ETACS-ECU the key number of keyless operation key that responded first. As for the transmission sequence to ETACS-ECU, the keyless operation key number is transmitted first, and then the lock request is output.
- If there is no response from the keyless operation key, Step 6 is performed once.
KOS-ECU transmits the exterior data from the outside transmission antenna assembly on the operation side. At the same time, KOS-ECU transmits the interfering radio wave* (reversal code) from the outside transmission antenna assembly on the other side. (The interfering radio wave will be transmitted from the front passenger's side when the driver's side door outside handle is operated, and vice versa. Also, it will be transmitted when the liftgate lock release handle is operated.)
If the specified time (varies with the number of keyless operation keys registered in KOS-ECU) has not elapsed, a confirmation is made if the lock conditions are met.
- After retry, when the responses from the registered keyless operation key are the exterior data only, KOS-ECU transmits the lock request (request to lock the applicable position) to ETACS-ECU. Also, KOS-ECU transmits the keyless operation key number to ETACS-ECU.
  NOTE: When multiple keyless operation keys responded, KOS-ECU transmits ETACS-ECU the key number of keyless operation key that responded first. As for the transmission sequence to ETACS-ECU, the keyless operation key number is transmitted first, and then the lock request is output.
- When the locking operation is performed on the driver's side, the priority order of keyless operation key is updated.