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800A CDR23



800A CDR23

CAN bus timeout, air-conditioning system

Diagnostic conditions
- Ignition on
- CDR23 ON

Possible cause of fault
- CAN comfort (high) - open circuit
- CAN comfort (low) - open circuit

CAN comfort is connected to the following control units:
PCM2 as of model year 2003
Instrument cluster
Air-conditioning control unit
Radio

NOTE: The plug connections of control units connected to CAN comfort are disconnected during troubleshooting. This causes additional CAN-related fault codes, e.g. 9110 DME control module to be stored in the fault memory of the instrument cluster. These fault codes should be initially ignored and should be deleted on completion of the troubleshooting.

Affected pins







CDR23 plug E, pins 1 and 2

Diagnosis/troubleshooting


Diagnosis/troubleshooting:




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