CEM-1A05 30 Power Supply

Condition
Diagnostic trouble code (DTC) CEM-1C05 is stored if the central electronic module (CEM) registers that the 30-supply to central electronic module (CEM) terminals # 3E and # 6E is low.

Condition
None.

Possible source
- Contact resistance or loose connections in the terminals
- Low battery voltage, poor battery or the battery needs charging
- Defective generator (GEN).

Condition
- The "Generator not charging" warning lamp is lit with the engine running
- The headlamp bulbs blow
- The "Generator not charging" warning lamp is not lit when the ignition is switched on
- Low rotation speed in the starter motor
- The electrolyte in battery boils with the engine running
- The battery discharges.