System Operation: Speedometer

The IPC receives the vehicle speed data from the BCM over the Medium Speed Controller Area Network (MS-CAN). The BCM receives the vehicle speed message from the GWM over the High Speed Controller Area Network (HS-CAN). The GWM receives the vehicle speed message from the ABS module over the HEV - CAN.

The IPC provides a tolerance that allows the speed indication to display between 3% below and 7% above the actual vehicle speed. This means that with an actual vehicle speed of 97 km/h (60 mph), the speedometer can indicate between 94-103 km/h (58-64 mph). Incorrect tire size or tire size configuration could potentially affect the speedometer accuracy.