2-Turn Unlock

1. If Driver Door Key Unlock Switch turns OFF from ON within T1 after Driver Door Key Unlock Switch turns ON from OFF (Driver Door Unlock Switch becomes UNLOCKED mechanically and does not output BCM.), turn Driver Unlock Relay, Unlock Relay (Central Unlock) output ON during T2.
2. If TX UNLOCK is received within T1 after Driver Door Key Unlock Switch turns ON from OFF (Driver Door Unlock Switch becomes UNLOCKED mechanically and does not output BCM.), turn Driver Unlock Relay and Unlock Relay (Central Unlock) output ON during T2.
3. Turn Driver Unlock Relay output ON during T2 when receiving TX UNLOCK signal. However, turn Driver Unlock Relay, Unlock Relay (Central Unlock) output during T2 if TX UNLOCK is received within T1.
4. Also, turn Driver Unlock Relay, Unlock Relay (Central Unlock) ON during T2 in case that Driver Door Key Unlock Switch turns ON from OFF within T1 after receiving TX UNLOCK.
5. Regard as the same TX even though different signal which is registered within T1 is received.
6. If turn Lock Relay output ON by TX Lock or Driver/Assist Key lock Switch, T1 is initialized.
7. Assist Key Unlock Switch turns ON from OFF, turn Driver Unlock Relay and Unlock Relay (Central Unlock) output ON during T2.

Fig 1: 2-Turn Unlock Timing Pattern Graph

Courtesy of KIA MOTORS AMERICA, INC.

T1 : 4 ± 1 sec, T2 : 0.5 ± 0.1 sec