Diagnostic trouble code (DTC) information

Condition 

Diagnostic trouble code (DTC) CEM-1C04 is stored if the central electronic module (CEM) registers that the 30-supply to the central electronic module (CEM) terminals #3E and #6E is too high.

Substitute Value 

None.

Possible Source 

• Defective generator (GEN)
• Defective battery.

Fault symptom[s] 

• The "Generator not charging" warning lamp is lit when the engine is running
• The headlamp bulb blows
• 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.