Diagnostic Trouble Code (DTC) Information CEM-8F52

Condition 

Fig 1: Identifying Central Electronic Module (CEM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The Central electronic module (CEM) checks the output signal to the relay winding for headlight cleaning.

If Central electronic module (CEM) registers that the output signal to the relay winding is missing or too low, the diagnostic trouble code is generated.

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

Substitute Value 

• None.

Possible Source 

• The washer pump's fuse has failed.
• Open-circuit or short-circuit to ground in the signal cable.
• Damaged relay.
• Short-circuiting in the pump for high-pressure washing.

Fault symptom[s] 

• Headlight washer pump does not work