CEM-1E04

Condition

Diagnostic trouble code (DTC) CEM-1E04 is stored if the central electronic module (CEM) registers that communication with the light switch module is not operating within 5 seconds of the ignition being switched on.

Substitute value

- None.

Possible source

- Fault in the cable between the light switch module and the central electrical module (CEM).
- Defective communication device, lamp switch module.
- Defective communication device, central electronic module (CEM).

Fault symptom[s]

- Beam height control does not function.
- The light switch does not operate.