Speedometer Malfunction: Description

The meter CPU receives vehicle speed signals from the skid control ECU via the CAN communication lines (CAN No. 1 Bus). The vehicle speed sensor detects the voltage that varies according to the vehicle speed. The skid control ECU supplies power to the vehicle speed sensor. The skid control ECU detects vehicle speed signals based on the pulses of the voltage.

HINT: 

If the vehicle speed sensor circuit has a malfunction, the skid control ECU outputs the DTCs. Perform troubleshooting with the "Brake Control System". Refer to DIAGNOSTIC TROUBLE CODE CHART .