VOLVO
ECM-A10D - Alternator control module (ACM). Faulty communication
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (6)
- Volvo C30 (2007–2013)2007–2011Kun motor: B5244S4
- Volvo C70 (2006–2013)2006Alle motorer unntatt: B5254T3
- Volvo C70 (2006–2013)2007–2010Kun motor: B5244S4, B5244S5
- Volvo C70 (2006–2013)2011Kun motor: B5244S4
- Volvo S40 (2004–2013)2005–2010Kun motor: B5244S4, B5244S5, B5244S7
- Volvo V50 (2004–2013)2005–2010Kun motor: B5244S4, B5244S5, B5244S7
Hva betyr feilkoden?
The alternator control module (ACM) sends the engine control module information about the alternator's condition over the LIN network. The code is set when the alternator reports an electrical fault, a mechanical fault or overheating, or when the engine control module itself detects interference in the communication. It can therefore point to the alternator, its drive or the wiring.
Mulige årsaker
- Worn brushes (carbon) in the alternator
- Damaged alternator
- Damaged alternator control module (ACM), which is also the charge regulator
- Damaged drive belt, belt tensioner or freewheel
- Contact resistance and oxidation in the terminals
- Open circuit or short circuit in the LIN wires
Hva du kan gjøre
- 1Check that the connectors at the alternator control module are fully seated and free from oxidation
- 2Check that the drive belt and belt tensioner are intact and that the air intake and outlet at the alternator are not blocked
- 3With a multimeter, check that the LIN wire has no open circuit and no short to ground or supply voltage
- 4If the fault returns after these checks, have a workshop inspect the alternator for worn brushes and the freewheel, since this needs measuring and dismantling
Symptomer du kan merke5
- The generator not charging warning lamp lights while the engine is running
- The battery discharges
- Noise from the alternator or the drive belt
- The engine judders under acceleration
- The headlamp bulb blows
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