Diagnostic Trouble Code (DTC) Information ECM-830C: Notes

Condition 

The engine control module (ECM) uses CAN communication to communicate with the central electronic module (CEM).

A diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the central electronic module (CEM) detects over voltage in the power supply system.

This diagnostic trouble code (DTC) is always stored along with another diagnostic trouble code (DTC) for the power supply system.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value 

• None.

Possible Source 

• A battery charger with too high charge voltage has been connected previously
• Damaged alternator control module (ACM).

Fault symptom[s] 

• The electrolyte in battery boils with the engine running
• The headlamp bulb blows.