CAN Bus off, TCO/A-CAN
â–¶ How to fix
1) Check the A connector and wiring at the back of the tachograph. 2) Check the ground connection on pin A5/A6. 3) Check if there is CAN communication problems with other ECU:s on the same CAN bus. 4) Check power supply of other ECU:s on the same CAN bus. 5) Check the tachograph A connector, and pin assignment: - Pin A4: CAN high. - Pin A7: CAN ground. - Pin A8: CAN low
What you'll see
tbd
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
CAN, bus off, A connector, also named TCO-CAN.
Possible cause
* Fault in cable harness. * Faulty CAN bus medium. * Fault in physical layer.