Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
The central electronic module checks the signal from the left Xenon lamp.
Diagnostic trouble code (DTC) CEM-8F18 is stored in the central electrical module if the central electronic module registers too high a signal from the left Xenon lamp.
Diagnostic trouble code (DTC) CEM-8F18 can be detected when the ignition is on for at least 10 seconds and the battery voltage is > 10.5 volts.

Substitute value
- None.

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
- Defective actuator motor in the xenon lamp housing.

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