Power Door Lock Operation
WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
BCM receives a LOCK signal from keyfob. BCM locks all doors with input of LOCK signal from keyfob.
When an UNLOCK signal is sent from keyfob once, driver's door is unlocked.
Then, if an UNLOCK signal is sent from keyfob again within 5 seconds, passenger door is unlocked.