Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-B10EA14

Condition
Vehicles with diesel engines are equipped with an electric additional heater (PTC-element) in certain markets. The central electronic module (CEM) governs the power socket for the electrical additional heater via an output.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Signal too low from the output.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition position II and III.

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
- The function switches off permanently after 100 operating cycles where the fault was detected. Erasing diagnostic trouble codes (DTCs) resets the result.

Possible source
- The signal cable is short-circuited to ground.
- Open circuit on signal cable.

Fault symptom[s]
- Poor heating in compartment