Analogue Gages: Speedometer

The speedometer is located on the LH (left-hand) side of the cluster and is available in three market variants:

• Major scale mph, minor scale km/h
• Major scale km/h, minor scale mph
• Major scale only in km/h.

The speedometer is driven by high speed CAN signals transmitted by the ABS (anti-lock brake system) module. The wheel speeds are measured by sensors reading the rotational speed of the rear wheels from toothed targets on the hubs. An average of the two wheel speeds are passed from the sensors to the ABS module in the form of pulsed signals. The ABS module converts these signals into a speed output on the high speed CAN to the instrument cluster.

The same speed outputs from the wheel speed sensors are also used to calculate the distance the vehicle has traveled.