VOLVO
ECM-U012086 - Lost Communication with Starter/ Generator Control Module. Bus Signal / Message Failures. Signal invalid
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
7 modellerS60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Vis modeller per årsmodell og motor (19)
- Volvo S60 (2011–)2011–2014Kun motor: B6304T4
- Volvo S60 (2011–)2015Kun motor: B6304T3, B6304T4, B6304T5
- Volvo S80 (2007–)2007Kun motor: B6324S, B8444S
- Volvo S80 (2007–)2008–2009Kun motor: B6304T2, B6324S, B8444S
- Volvo S80 (2007–)2010Kun motor: B6324S2
- Volvo S80 (2007–)2011–2015Kun motor: B6324S4
- Volvo V60 (2011–)2011–2014Kun motor: B6304T4
- Volvo V60 (2011–)2015Kun motor: B6304T3, B6304T4, B6304T5
- Volvo V70 (2008–)2008–2009Kun motor: B6304T2, B6324S
- Volvo V70 (2008–)2010Kun motor: B6324S2
- Volvo XC60 (2009–)2009Kun motor: B6304T2
- Volvo XC60 (2009–)2010Kun motor: B6304T2, B6324S2
- Volvo XC60 (2009–)2011–2015Kun motor: B6304T4, B6324S4
- Volvo XC70 (2008–)2008Kun motor: B6324S
- Volvo XC70 (2008–)2009Kun motor: B6304T2, B6324S
- Volvo XC70 (2008–)2010Kun motor: B6324S2
- Volvo XC70 (2008–)2011–2015Kun motor: B6324S4
- Volvo XC90 (2003–)2005–2006, 2011Kun motor: B8444S
- Volvo XC90 (2003–)2007–2010Kun motor: B6324S, B8444S
Hva betyr feilkoden?
The engine control module (ECM) controls the alternator charging voltage via LIN communication with the alternator control module (ACM), on request from the central electronics control module (CEM). The code is set when the engine control module detects a disturbance in the communication, and it concerns an invalid signal on the LIN network. Although the code is titled lost communication, it concerns the signal from the alternator control module.
Mulige årsaker
- Internal fault in another control module on the same part of the LIN network
- Faulty alternator control module (ACM), including its charge regulator
Hva du kan gjøre
- 1Check that the fuses are intact and that the battery is well charged
- 2Check the connectors at the alternator and at the engine control module for loose or oxidised contacts
- 3Look for chafed wiring on the LIN signal wire. Use a multimeter to check that it has no break and is not shorted to ground or supply voltage
- 4If you have a diagnostic tool: read the alternator status in live data with the engine running, and check whether the fault returns after the connectors have been checked
- 5If the fault returns: have a workshop with diagnostic equipment check the alternator control module and any other control modules on the LIN network
Symptomer du kan merke2
- The battery discharges
- The battery is dead or shows low voltage
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