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Home >> Cadillac >> 2009 >> STS Base, 4.6 A, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> DTC B1259 >> Circuit/System Description
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Circuit/System Description

The digital radio receiver (DRR) receives XM satellite radio signals via a digital radio antenna located on the outside of the vehicle. The signal is passed to the DRR through digital radio antenna coax. From the DRR, one audio common (-) and separate left and right audio signals (+), are sent to the radio. The radio processes these signals and passes the audio to the appropriate speakers or audio amplifier.