Rio L4-1.5L (2001)
Speedometer Head: Description and Operation
Instrument Cluster
This instrument cluster assembly includes a speedometer, an odometer and a trip meter. Speedometer indicates speed. Odometer records total road
mileage. Trip meter records trip mileage. Indicator needle is electrically driven by a precision DC motor circuit. Speed information source is a speed
sensor on transmission. Odometer and Trip meters consist of numbered wheels that are electrically driven by a DC stepper motor.
Circuit Operation
Speedometer
A solid state circuit controls the speedometer. As the wheels are turned, an electrical signal is sent from the vehicle speed sensor to the speedometer