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Home >> BMW >> 1989 >> 635CSi Automatic >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel >> Testing >> Speedometer
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Instrument Panel: Testing: Speedometer

Electronic speedometer receives signals from a rotating magnetic disc mounted on rear axle. It can be checked with an ohmmeter. Ohmmeter should receive pulsating readings. Speedometer distributes information for on-board computer, cruise control and service interval circuits.