Action in service
- Disconnect the bus users one after another. Read fault memory. If the fault does not presently exist, the disconnected user/partial wiring harness is causing the malfunction on the bus. At least one user must always remain connected; otherwise, the fault will be entered again.
- Check voltage supply to the bus user.
- Check the wiring harness between the DME and bus user. For this purpose, all bus users must be disconnected.
- Replace bus user