Diagnostic Trouble Code (DTC) Information IAM-B1A011B

Condition 

The integrated audio module (IAM) checks impedance in the front left door speaker.

The diagnostic trouble code (DTC) is stored if the control module detects that:

• Impedance too high.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Start-up of the control module.

Fig 1: Identifying Loudspeaker

Courtesy of VOLVO CARS CORPORATION

Substitute Value 

• None.

Possible Source 

• Open-circuit in the signal cable between the loudspeaker in the left front door and the control module.
• Open-circuit in the loudspeaker.

Fault symptom[s] 

• No sound from loudspeakers