VOLVO
ECM-1420 - Generator. No signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Feilkoden har ulik betydning avhengig av modell, årsmodell eller motor. Velg betydningen som gjelder din bil.
Gjelder følgende modeller:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (3)
Hva betyr feilkoden?
The fault concerns the alternator control signal, which the engine control module (ECM) sends as a PWM signal. Although the fault says the signal is missing, it can also be set when the signal is too high or too low, or when the alternator gets too hot.
Mulige årsaker
- Play, contact resistance or oxidation in the connections
- Open circuit in the signal wire
- Signal wire shorted to ground
- Clogged ventilation in the alternator housing
- Damaged alternator
Hva du kan gjøre
- 1Read the fault code, clear it and test drive to see whether it returns
- 2Check the alternator connector for play, contact resistance and oxidation
- 3Check the alternator control signal wire for breaks
- 4Check that the alternator housing is not clogged with dirt, so that air can circulate through the alternator
- 5If nothing is found and the fault code returns after clearing and a test drive: have a workshop try a new charging regulator
Symptomer du kan merke1
- No noticeable symptoms for the driver
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