When the ignition switch is turned to the RUN or the START position, voltage is applied through the Ignition 1 positive voltage feed circuit to the BCM. When the left front seat belt is unbuckled, the seat belt switch input circuit grounds through the seatbelt switch. The fasten belts chime sounds for 8 seconds.

The Key In Ignition Warning chime sounds when the key is in the ignition, not in the ON or START position and the Drivers door is open. Inserting a key in the ignition switch closes the ignition key warning switch, which applies a ground input to the Body Control Module (BCM). The BCM sounds the key in ignition chime.

In order for the Lamps on chime to be activated, the following needs to occur via BCM inputs:

The park brake warning chime activates when the body control module (BCM) receives a ground signal from the park brake switch and a class 2 message from the powertrain control module (PCM) indicating the vehicle speed is greater than 5 km/h (8 mph). The park brake warning chime will also sound if the vehicle is in gear for at least 8 seconds with the park brake on.

The check gauges chime sounds 3 notes every time one of the following indicators turns on and the engine has been running for more than 5 seconds:

The check gauges chime sounds 3 tones at a rate of 300 tones per minute. The check gauges chime is not limited to once per ignition cycle for the door ajar indicator when the transaxle is in Drive or Reverse. The chime sounds whenever the activating conditions occur throughout an ignition cycle.