Faulty Communication

Each control module except for the central electronic module has two diagnostic trouble code types which are related to faulty communication (the central electronic module only has one type of diagnostic trouble code).

These are:

• Faulty messages
• Configuration fault (missing in the central electronic module (CEM)).

Faulty messages 

When a control module sends errors in the messages a number of times, the control module stops communication. The diagnostic trouble code is stored in the control module which caused the faulty message. If the fault is permanent it is impossible to communicate with the control module. It is not possible to read off diagnostic trouble codes from the control module with the switched off communication.

The diagnostic trouble codes (DTCs) are XXX-E000 for the high speed network and XXX-E001 for low speed network.

Configuration fault 

If the signal configuration of a control module does not correspond to the signal configuration of the central electronic module, a diagnostic trouble code is stored in the control module with the faulty signal configuration.

The diagnostic trouble code for configuration fault is XXX-E003.