Hazard and Horn Reminder

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.

When the doors are locked or unlocked by key fob, power is supply to hazard warning lamp and lamps flashes as follows

LOCK operation: C mode (flash twice) or S mode (flash twice)
UNLOCK operation: C mode (flash once) or S mode (does not flash)
BCM outputs to IPDM E/R for horn reminder signal as DATA LINE (CAN H line and CAN L line). The hazard and horn reminder has C mode (horn chirp mode) and S mode (non-horn chirp mode).