Diagnostic Trouble Code (DTC) Information FSM-U300056

Condition

Forward Sensing Module (FSM) checks the software in the control module.

The diagnostic trouble code is stored if the control module detects:

Software problem.

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

Ignition switch position II.
Control module supplied with power.

NOTE:

The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Fig 1: Identifying Forward Sensing Module (FSM)

Courtesy of VOLVO CARS CORPORATION

Substitute Value

None.

Possible Source

Faulty software.

Fault symptom[s]

Brake pedal/Excessive "brake pedal effort" required
Cruise control/Does not engage
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
Warning lights and chimes/Front monitoring/Active safety indication/no indication