Road speed sensor
â–¶ How to fix
Check the fault codes in the ABS/EBS system. Check the CAN communication with other control units on the same CAN bus. Check the CAN communication with the coordinator Check the pin on the tachograph switch A: Pin A4: CAN high Pin A7: CAN ground Pin A8: CAN low
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Secondary speed signal from ABS/EBS missing or not available.
Possible cause
Fault in CAN communication. Faults in the ABS/EBS system. Fault in the communication from the coordinator.