Park Brake Warning

The chime producer activates the park brake active audible warning as requested by the instrument panel cluster (IPC). The IPC sends a class 2 message to the chime producer indicating the chime frequency (fast rate) and duration (4 pulses).

• The body control module (BCM) determines that the park brake is applied.
• The vehicle is not in park. The IPC receives a class 2 message from the powertrain control module (PCM) indicating the gear position.
• The vehicle speed is greater than 8.05 km/h (5 mph). The IPC uses the vehicle speed signal circuit (4000 pulses/mile) from the powertrain control module (PCM) in order to calculate the vehicle speed.