Scania MBS DTC 543 #Not implemented. Absence of CAN bus 3 communication

MBS Centralina MBS · Scania

Codice 543 (decimale). Alcuni strumenti di diagnosi lo mostrano in esadecimale come 021F.

In breve

The fault is validated as present if the ECU does not detect communication on CAN bus 3 within the timeout period

Si applica a: MBS3 (MBS)

Cosa significa il codice di errore Scania MBS 543?

The fault is validated as present if the ECU does not detect communication on CAN bus 3 within the timeout period

Cosa causa il DTC 543 di Scania?

• Defect wiring for CAN bus 3. • Defect ECU unit(s) on CAN bus 3.

Come reagisce il sistema?

Functions dependent on information from CAN bus 3 are degraded/missing in MBS (Master)

Quali sono i sintomi?

MBS expansion node J, K, L and M are connected to CAN bus 3, meaning that components connected to those nodes may not work as intended.

Come risolvere il codice di errore Scania MBS 543?

  1. Trouble shoot CAN bus 3 cable harness and connectors.
  2. Check connector for CAN bus 3 on MBS
  3. Check wiring for CAN bus 3:
  4. Measure the resistance (with the battery disconnected) between CAN-high and CAN-low.
  5. It should be close to 60 ohm (one 120 ohm termination resistor in each end of the CAN-bus).
  6. Measure the resistance (with the battery disconnected) between CAN-high on MBSM and CAN-high on any other unit on CAN bus 3.
  7. It should be close to zero ohm.
  8. Measure the resistance (with the battery disconnected) between CAN-low on MBS and CAN-low on any other unit on CAN-bus 3.
  9. It should be close to zero ohm.

Queste informazioni sono solo indicative. Segui sempre il manuale di officina del produttore e le procedure di sicurezza; in caso di dubbio, contatta un'officina autorizzata.

Codice 543 negli altri sistemi Scania

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