Ignition Key Warning

The Body Control Module (BCM) will sound the ignition key warning when the BCM senses all of the following conditions:
^ The ignition switch is in the OFF, LOCK or ACCY position. There is no voltage at circuit 39 to the BCM ignition positive voltage input.
^ The ignition key is in the ignition switch. Ground is applied from G200 through circuit 650, the ignition key warning switch and circuit 80 to the BCM key ignition signal input.
^ The driver door is open. On vehicles without door jamb switches: ground is applied from G200 through circuit 750, the left side door lock and circuit 745 to the BCM driver door open input.

On vehicles with door jamb switches: ground is applied through the door jamb switch and CKT 745 to the BCM driver door open input.