Diagnostic Trouble Code (DTC) Information ICM-B108786

Condition 

The steering wheel buttons are connected to the Infotainment control module (ICM) via LIN communication. The Infotainment control module (ICM) checks the status of the steering wheel buttons.

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

• Received message does not correspond with expected message.

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

• Activated control module.

Fig 1: Identifying Infotainment Control Module (ICM)

Courtesy of VOLVO CARS CORPORATION

Substitute Value 

• None.

Possible Source 

• Fault-trace in transmitting control module.

Fault symptom[s] 

• Audio system steering wheel keypad does not function