Diagnostic trouble code (DTC) information UEM-0005

Condition 

Fig 1: Identifying Sun Roof Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The upper electronic module (UEM) receives information from the sun roof.

If the sun roof does not respond to repeated requests from the upper electronic module (UEM), the control module interprets it as a communication fault and the diagnostic trouble code (DTC) is stored.

The diagnostic trouble code (DTC) can be detected 20 seconds after the control module has been initialized.

Substitute Value 

• None.

Possible Source 

• Open-circuit in UEM_K3 (the serial cable between the upper electronic module (UEM), siren and sun roof)
• Short-circuit to ground in UEM_K3
• Short-circuit to supply voltage in UEM_K3
• Damaged Sun roof module (SRM).

Fault symptom[s] 

• The power sun roof does not operate.