Diagnostic Trouble Code (DTC) Information CEM-8F30

Condition 

Fig 1: Identifying Heated Rear Windshield Relay

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) checks the headlamp washer motor.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the signal in the driver circuit for the headlamp washer motor relay is too low or that there is no signal.

The diagnostic trouble code (DTC) can be diagnosed in ignition positions I or II.

Substitute Value 

• None.

Possible Source 

• Short-circuit to ground
• Open-circuit in the cable.

Fault symptom[s] 

• The headlamp washer motor does not operate.