- 48 V on-board electrical system LIN communication error (For internal use only!) -

主题编号
LI54.10-P-072553
版本
1
功能组
54.10 Battery, power supply, voltage converter
日期
03-08-2021
有效性
with code B01
更改原因

投诉

An engine start might not be possible or there might be a delay of up to 3 seconds or longer before starting.

The fault status was cleared by switching the battery management system to sleep mode and then waking it again (3 min. standard, up to 30 min. if powertrain is running on).

A red 48 V fault message (Stop, see operator's manual) appears during the start-up phase (start/stop not affected).


原因

Fault code "B183387" stored and/or current in DC/DC converter N83/1.

And fault code "U029987" and/or "U029900" is stored and/or current in the powertrain control unit (PTCU) N127.

Communication error between 48 V battery G1/3 and DC/DC converter N83/1.


补救

  • Disconnect coupling (connector) from DC/DC converter N83/1 and 48 V battery G1/3 and visually inspect pins/contact sockets.
  • Check power supply of DC/DC converter N83/1.
  • If both previous points have been processed and a cause could not be found, update 48 V battery G1/3 to latest software.


症状
症状
Overall vehicle / Power supply / Battery/On-board electrical system / Battery/on-board electrical system display message / Battery/Alternator - Serviced Required
Overall vehicle / Networking / LIN communication / Malfunction

控制单元/故障代码
控制单元
故障代码
故障代码说明
N127 - Control unit 'Powertrain' (PTCU) (CPC_NG) (C (205)) U029900 Communication with control unit "DC/DC converter for 48V on-board electrical system" has a malfunction. _
N127 - Control unit 'Powertrain' (PTCU) (CPC_NG) (C (205)) U029987 Communication with control unit "DC/DC converter for 48V on-board electrical system" has a malfunction. The message is missing.
N83/1 - DC/DC converter (DDW) (DCDC48_222) (C (205)) B183387 The battery for the 48V on-board electrical system has a malfunction. The message is missing.

操作号/损坏代码
操作号
操作内容
时间
损坏代码
提示
540HY90 Software release of 48 V battery