Scania MBS DTC 522 #Not implemented. Electrical error on CAN bus 2

MBS Unidade de comando MBS · Scania

Código 522 (decimal). Alguns equipamentos de diagnóstico mostram-no em hexadecimal como 020A.

Resumo

The CAN-controller of CAN bus 2 has entered state bus-off, which indicates a communication error. There is a short circuit on CAN bus 2.

Aplica-se a: MBS3 (MBS)

O que significa o código de avaria Scania MBS 522?

The CAN-controller of CAN bus 2 has entered state bus-off, which indicates a communication error. There is a short circuit on CAN bus 2.

O que causa o DTC 522 da Scania?

• Defect wiring of CAN bus 2: - short circuit between CAN-high and CAN low. - short circuit between CAN-high and supply voltage. - short circuit between CAN-high and ground. - short circuit between CAN-low and supply voltage. - short circuit between CAN-low and ground. • Defect ECU unit(s) on the CAN bus 2.

Como reage o sistema?

Functions dependent on information from CAN bus 2 are degraded, meaning components connected to MBS expansion node A, B, C and D.

Quais são os sintomas?

Functionality connected to MBS expansion nodes A, B, C and D may not work as intended.

Como resolver o código de avaria Scania MBS 522?

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

Esta informação é apenas orientativa. Siga sempre o manual de oficina do fabricante e as regras de segurança; em caso de dúvida, contacte uma oficina autorizada.

Código 522 noutros sistemas Scania

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