VOLVO
ECM-2224 - Auxiliary heater relay. Signal faulty. Intermittent fault
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 fault is intermittent, meaning it comes and goes, and it concerns the wire feeding the auxiliary heater relay. The code is also set if the engine control module finds that the power draw does not change when the auxiliary heater is switched on or off. The fault can lie in the wire, the relay or the heater element, and the auxiliary heater is then switched off.
Mögliche Ursachen
- Signal wire short-circuited to voltage
- Open circuit in the signal wire
- Signal wire short-circuited to ground
- Defective auxiliary heater relay
- Defective auxiliary heater element
Was Sie tun können
- 1Have a diagnostic tool? Activate the auxiliary heater and check that it starts
- 2Inspect the wire between the relay and the heater element for breaks, chafing and loose clips
- 3Check the connectors at the relay and the heater element for play and oxidation
- 4Use a multimeter to check that the wire to the relay is not broken or shorted to ground or voltage
- 5If the wiring is sound but the fault returns, have a workshop check the relay and the heater element
Symptome, die Sie bemerken können1
- No noticeable symptoms for the driver
Was der Fehler beeinflussen kann1
- The auxiliary heater is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.