July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Ignition Key Warning Chime

BCM reads ON/OFF signals from key switch and key lock solenoid (key switch).

Signal is supplied

from key switch and key lock solenoid (key switch) terminal 4
to BCM terminal 69.

BCM reads ON/OFF signals from front door switch (driver side).

Signal is supplied

from front door switch (driver side) terminal 1.
to BCM terminal 142

BCM detects key switch ON, front door switch (driver side) ON and ignition switch OFF or ACC. And then BCM outputs the ignition key warning chime signal to the warning chime.

Signal is supplied

from BCM terminal 12
to warning chime terminal 3.