Applies to: CMS1 (CMS)
What does Scania CMS fault code 684 mean?
Fault in external request from the bodywork electrical system.
What causes Scania DTC 684?
Fault in CAN signal from the bodywork electrical system.
What are the symptoms?
Functions which are dependent on CAN signals from the bodywork electrical system are not functioning correctly. The following functions can be affected: - User function 149 – Vehicle level control in stand-by mode. - User function 496 – Vehicle level control. - User function 105 – Traction control. - User function 155 – Kneeling. - User function 403 – Sidewalk detection. - User function 497 – Load status presentation. - Tag axle lift. - Air suspension control.
How to fix Scania CMS fault code 684?
Check fault codes for the bodywork electrical system.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.