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4.1 Antenna Systems (AS)    >   11 Diagnosis - Function Test

Function Test Explanation Function Test: Tune-in a weak radio station (music). Set fader, bass, treble and balance to center range (RESET reading in display window). Verify reception quality of AM and FM band by performing road test. Compare function test results against identical vehicle (with integrated antenna) from dealer stock. Tune-in same radio station , ensure that the settings are set to position 0 and perform same road test as above and over same course . If components are replaced, repeat entire function test.