Key-In Warning Alarm Circuit

The key-in warning alarm will sound if the following conditions occur simultaneously:
^ The ignition key must be in the ignition switch
^ The left hand (LH) front door is open.

When the ignition key is in the ignition switch and the LH front door is open the key-in warning buzzer switch closes. The LH door jamb switch also closes. When both of the switches close, the audio alarm module senses ground. When the audio alarm module senses ground the key-in warning alarm activates. The key-in warning alarm will stop sounding if 1 of the following conditions occurs:
^ Removal of the ignition key from the ignition switch
^ Closing the LH front door