Diagnostic Trouble Code (DTC) Information CEM-8F11

Condition 

Fig 1: Identifying Headlamp Beam Height Control Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) checks the signal for the headlamp beam height control.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) detects that the voltage to headlamp beam height control exceeds 90% of the supply voltage.

The diagnostic trouble code (DTC) can be diagnosed at ignition switch position II.

Substitute Value 

• If the fault has been detected in 100 ignition cycles, the output is closed permanently until the diagnostic trouble code is erased (applies from structure week 200539).

Possible Source 

• Damaged actuator motor for headlamp beam height control
• Short-circuit to supply voltage in signal cable.

Fault symptom[s] 

• Incorrect setting for low beam.