Diagnostic trouble code (DTC) information CEM-1C06
Condition
The central electronic module (CEM) communicates with the alternator control module (ACM).
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) receives information from the alternator control module (ACM) indicating an electrical fault in the generator (GEN).
The diagnostic trouble code (DTC) can be diagnosed at engine speeds (RPM) above 600 RPM.
Substitute Value
- None.
Possible Source
- A battery charger with too high charge voltage has been connected previously
- Worn brushes (carbon)
- Damaged alternator control module (ACM)
- Damaged generator (GEN).
Fault symptom[s]
- The "Generator not charging" warning lamp is lit when the engine is running
- The battery discharges
- Low rotation speed in the starter motor
- The electrolyte in battery boils with the engine running
- The headlamp bulb blows.