VOLVO
ECM-1500 - FR alternator. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS40 (1996–2004), V40 (1996–2004)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The engine control module (ECM) uses the signal from the alternator FR connection to judge how hard the alternator is loaded. If the pulse signal is outside the expected range while the engine is running, fault code ECM-1500 is set.
Mulige årsaker
- Contact resistance in the connectors at the alternator or the control module
- Open circuit in the alternator signal wire
- Signal wire short-circuited to ground or supply voltage
Hva du kan gjøre
- 1Switch off the ignition and check the connectors at the alternator and the control module for play and oxidation, then reconnect them firmly
- 2Check the alternator signal wire for chafing and breaks
- 3With a multimeter, check that the signal wire has no contact with ground (the body) or battery voltage, and that it is not broken
- 4With a diagnostic tool, check in live data that the alternator load signal changes when the headlights and heated rear window are switched on
- 5If the fault remains, have a workshop check the alternator and how the control module handles the signal
Symptomer du kan merke1
- No noticeable symptoms for the driver
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