VOLVO
BCM-U000188 - High Speed CAN Communication Bus. Bus Signal / Message Failures. Bus off
System
Bremsestyring (BCM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
6 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013)
Vis modeller per årsmodell og motor (7)
- Volvo C30 (2007–2013)2011–2013Kun motor: D4162T, D5204T, D5204T5
- Volvo C70 (2006–2013)2011Kun motor: D5204T, D5204T5
- Volvo C70 (2006–2013)2012–2013Alle motorer unntatt: B5254T7
- Volvo S40 (2004–2013)2011–2012Kun motor: D4162T, D5204T, D5204T5
- Volvo V40 (2013–)2013–2015
- Volvo V40 Cross Country (2013–)2013–2015
- Volvo V50 (2004–2013)2011–2012Kun motor: D4162T, D5204T, D5204T5
Hva betyr feilkoden?
The brake control module (BCM) has gone into bus-off on the CAN network, meaning it has lost contact with the other control modules. The fault arises when communication is disturbed by another module or when the brake module's own messages disturb the network. As communication cannot be restored while driving, the code can usually only be read out when the fault is intermittent.
Mulige årsaker
- Short circuit between the CAN wires
- Open circuit in one of the CAN wires
- Internal fault in another module on the same part of the CAN network
- Internal fault in the brake control module
Hva du kan gjøre
- 1Read codes in the central electronic module and in the other modules on the CAN network, and troubleshoot those first
- 2Measure the resistance in the CAN wires against ground and supply voltage and look for shorts and open circuits
- 3Have a workshop identify which module disturbs the network by disconnecting them one at a time, and replace it if it communicates incorrectly
- 4Check that the connectors on the network are secure and that the wiring does not run close to sources of interference
- 5The brake system is safety-critical, so have a workshop carry out all work on the network and the modules
Symptomer du kan merke5
- ABS warning lamp lit
- Brake circuit warning lamp lit
- Traction control warning lamp lit
- Stability function does not work
- Traction control does not work
Hva feilen kan påvirke3
- The brake control module switches itself off and stays off until the power supply is broken and restored
- Stability control and traction control are disabled
- Dynamic stability control (AYC) is disabled
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