Odometer: Description and Operation

When the ignition switch is in ON (II) or START (III), battery voltage is supplied through fuse 15 to the gauges in the gauge assembly.

The odometer and speedometer drive circuits receive pulses from the Vehicle Speed Sensor (VSS). The pulse rate increases as the car accelerates. The frequency and duration of these input pulses are measured and displayed by the speedometer, odometer and tripmeter.