Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-U300316

Condition
Central electronic module (CEM) checks the battery voltage.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Battery voltage lower than 11.6 V.
- Incorrect value lasts longer than 2 minutes.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Engine running.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute value
- None.

Possible source
- Poorly charged battery or corroded connecting cables.
- Damaged generator (GEN).
- Damaged battery.

Fault symptom[s]
- Battery discharges
- Message in information display
- Warning lamp "Gen. not charging" is lit with engine running
- Engine is difficult to start
- Alternator and charge regulator/Power supply problems
- Starting/Engine does not start/Unsure when/at all times