Diagnostic Trouble Code (DTC) Information CEM-8A09

Condition 

Fig 1: Identifying Left-Hand Turn Signal Lamp

Courtesy of VOLVO CARS OF NORTH AMERICA.

The central electronic module (CEM) powers the right-hand low beam directly via an output. The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the power consumption for the output is too low.

The diagnostic trouble code (DTC) can be diagnosed once the dipped beam has been on for a minute.

Substitute Value 

• None.

Possible Source 

• Low beam defective or missing
• Open-circuit in the signal cable to the right-hand low beam
• Short-circuit to supply voltage in the signal cable.

Fault symptom[s] 

• Low beam does not work
• The low beam is constantly lit.