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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical Modules And Components - Design And Function - 4 Of 5 >> Remote Digital Audio Receiver (RDAR) >> System Overview >> Control Module
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Control Module

Fig 1: Identifying Remote Digital Audio Receiver (RDAR)
GLL152306Courtesy of VOLVO CARS CORPORATION

Remote Digital Audio Receiver (RDAR) has the task of receiving both digital satellite and terrestrial radio signals, process them and transmit them onward on the MOST network.

Remote Digital Audio Receiver (RDAR) is located behind the rear seat.

The control module has serial optical communication with other components in the MOST network. This means that all communication with Remote Digital Audio Receiver (RDAR) occurs via the Infotainment control module (ICM) or on the initiative of the Infotainment control module (ICM).

The control module checks the input and output signals through an integrated diagnostic system.

The control module communicates with directly connected components, and via MOST communication.

Any diagnostic trouble codes are stored in the control module memory. The information can be read out via the data link connector in the vehicle.