VOLVO
ECM-U011086 - Lost Communication With Drive Motor Control Module. Bus Signal / Message Failures. Signal invalid
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Vis modeller per årsmodell og motor (8)
- Volvo S80 (2007–)2007–2009Kun motor: D5244T4, D5244T5
- Volvo S80 (2007–)2010–2011Kun motor: D4164T
- Volvo V70 (2008–)2008–2009Kun motor: D5244T4, D5244T5
- Volvo V70 (2008–)2010–2011Kun motor: D4164T
- Volvo XC60 (2009–)2009Alle motorer unntatt: B6304T2
- Volvo XC70 (2008–)2008Alle motorer unntatt: B6324S
- Volvo XC70 (2008–)2009Kun motor: D5244T4, D5244T5
- Volvo XC90 (2003–)2013–2014Kun motor: D5244T18, D5244T5
Hva betyr feilkoden?
The engine control module (ECM) monitors LIN communication with the alternator control module (ACM), which regulates charging. Although the code is titled lost communication with the drive motor control module, it applies to communication between the engine control module and the alternator control module. The code is set when the engine control module detects a fault in that communication.
Mulige årsaker
- Contact resistance or oxidation in the connectors at the engine control module or the alternator control module
- Open circuit in the signal wire between the engine control module and the alternator control module
- Faulty alternator control module (ACM)
Hva du kan gjøre
- 1Read the codes and fix any other communication faults first, as they may share the cause
- 2Check that the fuses are intact and that the battery is well charged and has good voltage
- 3Check the connectors at the alternator and at the engine control module for loose, corroded or oxidised contacts
- 4Look for chafed or pinched signal wiring. Use a multimeter to check for a break or a short to ground
- 5Check that the engine earth points to the body are clean and tight
- 6If the fault returns: have a workshop with diagnostic equipment check the alternator control module and the alternator
Symptomer du kan merke1
- Charging warning light comes on or behaves abnormally
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