Possible cause of fault
- Short circuit between the two CAN leads (CAN-high and CAN-low)
- Short circuit between CAN-high (drive) and ground
- Short circuit between CAN-low (drive) and voltage
- A faulty control module connected to CAN drive bus
NOTE:
- The CAN drive bus is connected to the following control modules:
- DME
- Tiptronic
- PSM and steering angle sensor
- Instrument cluster
NOTE:
The plug connections of control modules connected to the CAN drive bus are disconnected for troubleshooting. This causes additional CAN-relevant fault codes, for example, "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.