Diagnostic Trouble Code (DTC) Information UEM-0094

Condition 

Fig 1: Identifying Rear View Mirror

Courtesy of VOLVO CARS OF NORTH AMERICA.

The upper electronic module (UEM) receives information via the controller area network (CAN) indicating whether the seat belt reminder lamp should be on or off. The diagnostic trouble code (DTC) is stored if the upper electronic module (UEM) receives an indication that the seat belt reminder lamp should not be lit but the lamp is lit anyway.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value 

• None.

Possible Source 

• Defective upper electronic module (UEM) (internal fault).

Fault symptom[s] 

• The seat belt reminder lamp is constantly on.
• The seat belt reminder lamp shines weakly