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Home >> Saab >> 2003 >> 9-3 Vector, Automatic >> Repair and Diagnosis >> Electrical >> Body Electrical >> Control Module (Late; 9440) >> Technical Description >> Navigation unit (635) >> Main purpose >> Notes
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Main purpose: Notes

Determines the position of the car using GPS. Converts verbal pulses from the microphone to digital pulses. Both signals are converted to light pulses and sent over the O-bus.