Diagnostic Trouble Code (DTC) Information FSM-U300063

Condition 

Forward Sensing Module (FSM) checks internal components and functions in the control module.

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

• Internal signals outside permitted range occur for more than 3 seconds.

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

• Engine running.

Fig 1: Identifying Forward Sensing Module (FSM)

Courtesy of VOLVO CARS CORPORATION

Substitute Value 

• None.

Possible Source 

• Internal fault in the Forward Sensing Module (FSM).

Fault symptom[s] 

• Brake pedal/Excessive "brake pedal effort" required
• Warning lights and chimes/Front monitoring/Active safety indication/no indication
• Warning lights and chimes/Bulb failure indication/no indication
• Text window and warning symbol/Text message