Vehicle speed pulse indication (Press No. 5 button)

This diagnostic screen checks that the audio unit is receiving the VSP indication.

When you drive the vehicle, the VSP indicates the signal from the ECM/PCM in hertz (Hz) and the vehicle speed in km/h.

Fig 1: Screen Display - Vehicle Speed Pulse Indication (Press No. 5 Button)

Courtesy of AMERICAN HONDA MOTOR CO., INC.