Checking the function of the audio module (AUM)

Check the power supply for the control module by switching on the radio or playing a CD. There must be sound from the radio or CD.

Is there sound from the radio? 

• YES 

  Refer to Checking communication with the audio module (AUM) 

• NO 

  Refer to Checking the power supply and ground for the audio module (AUM) 

HINT: After carrying out the repair, check that the fault has been remedied. 

Fig 1: Identifying Ignition ON

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Fig 2: Identifying Connector(s) Reinstallation

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Reconnect the connectors. Reinstall the components
• Ignition on.

  Check the power supply for the control module by switching on the radio or playing a CD.

  There must be sound from the radio or CD.

  NOTE:

  Radio reception may be poor indoors. On certain cars, the radio reception may deteriorate if the trunk lid is open.

Is there sound from the radio? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Information