Diagnostic Trouble Code (DTC) Information CEM-B10EA13: Notes
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 high from the output.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.
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
- Contact resistance, oxidation or poor contact in connections.
- Open circuit on signal cable.
- The signal cable is short-circuited to ground.
- Temporary internal fault in the PTC-element caused by temporary incorrect signals.
- Damaged PTC element.
Fault symptom[s]
- Temperature control/Heater not hot enough in front section
- Temperature control/Heater slow to heat in front section
- Temperature control/Heater not hot enough in rear section
- Temperature control/Heater does not work
- Temperature control/Heater slow to heat in rear section