Speedometer Module: Description and Operation

Without Buzzer
The car is fitted with an electronic speedometer. Transmission between the gearbox and the speedometer is electronic.

When ignition switch 20 is in the Drive position, current is supplied to pin 1 of the sensor, vehicle speed sensor 132, which sends a pulsed signal to the Cruise Control and speed warning systems, as well as to other systems.

The pulse frequency is 2,458 pulses per kilometer.

Vehicle speed sensor 112 is mounted in the gearbox. It sends an alternating current signal, the frequency of which varies with the speed of the car, to electronic speedometer 111 in the main instrument display panel. The pulse frequency of vehicle speed sensor 112 is four times that of sensor 132.

With Buzzer
In certain markets, the speedometer incorporates speed warning buzzer 256 and speed warning control module 356.