Diagnostic Trouble Code (DTC) Information ICM-1A54

Condition 

Fig 1: Identifying Subwoofer Module (SUB) And Subwoofer

Courtesy of VOLVO CARS CORPORATION

The infotainment control module (ICM) checks the communication with the subwoofer module (SUB).

The diagnostic trouble code (DTC) is stored if the infotainment control module (ICM) registers a fault in the communication with the subwoofer module (SUB).

The diagnostic trouble code (DTC) can be diagnosed with the ignition on and the battery voltage above 11 V.

Substitute Value 

• None.

Possible Source 

• Internal fault in the subwoofer module (SUB)
• No subwoofer module (SUB).

Fault symptom[s] 

• No sound from the bass speaker.