Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-8F1C

Condition
The central electronic module (CEM) checks the signal from the right-hand Xenon lamp.
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the signal from the right-hand Xenon bulb is too high.
The diagnostic trouble code (DTC) can be detected when the ignition has been on for at least 10 seconds and the battery voltage is above 10.5 V.
The diagnostic trouble code (DTC) can be diagnosed at ignition switch position II.

Note! Each headlamp has two motors and a solenoid. One of the motors is located at the back of the headlamp unit and controls the headlamps' beam length regulation. This motor can be replaced as a separate spare part. The other motor is installed inside the headlamp unit. It manages the active headlamps (ABL) function and can only be replaced by replacing the entire headlamp unit. The solenoid is built into the headlamp and manages the switching between full and dipped beams. It can only be replaced by replacing the entire headlamp unit.

Substitute value
- Shortest headlamp range will be used.

Possible source
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- The actuator motor in the xenon lamp housing has jammed
- Damaged actuator motor in the xenon lamp housing.
- Headlights/Headlight aim is off

Fault symptom[s]
- The low beam is constantly lit
- The high beam is constantly lit
- The road surface is not illuminated.
- Headlights/Headlight aim is off