FixVault

System Description: Speedometer

ABS actuator and electric unit (control unit) provides a vehicle speed signal to the unified meter and A/C amp. via CAN communication lines. After unified meter and A/C amp. receives the vehicle speed signal, it changes the signal to 8 pulse signal and provides the 8 pulse signal to the combination meter for the speedometer via communication line.

Fig 1: Speedometer - Communication Diagram
G04917972Courtesy of NISSAN MOTOR CO., U.S.A.