VOLVO
ECM-1500 - FR alternator. Faulty signal
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleS40 (1996–2004), V40 (1996–2004)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- 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
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- No noticeable symptoms for the driver
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.