Key-In-Ignition Warning

Radio activates key-in-ignition audible warning as requested by the Body Control Module (BCM). BCM sends a class 2 serial data message to radio indicating chime frequency (medium rate) and duration (continuous). Key-in-ignition warning sounds when following occurs:

• Ignition switch is in OFF position.
• BCM determines that driver's door is open (signal is low).
• BCM determines that key-in-ignition switch is closed (signal is low).