ABS 5.7
Fault code 5520CAN data bus
Entire CAN drive communication disturbed
Diagnostic conditions
- Ignition on
Possible cause of fault
- Short circuit to B+/ground/with respect to each other or open circuit or incorrect allocation in CAN drive
- One or several control units faulty, which are connected directly to the CAN drive
- ABS control unit faulty
Affected pins
Pin 24 and pin 40
Diagnosis/troubleshooting for vehicles with manual transmission
NOTE: Before troubleshooting, read out the fault memory of the DME and the instrument cluster and, if necessary, remedy faults.
Diagnosis/troubleshooting for vehicles with Tiptronic transmission
NOTE: Before troubleshooting, read out the fault memory of the DME, Tiptronic and the instrument cluster and, if necessary, remedy faults.
