VOLVO
ECM-0024 - Auxiliary heater relay 1+2. Auxiliary heater 2, signal too low. Intermittent fault.
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
3 ModelleS70 (1997–2000), V70 (1997–2000), V70 (2000–2008)
Modelle nach Baujahr und Motor anzeigen (3)
Was bedeutet der Fehlercode?
The engine control module has received too low a signal from auxiliary heater relay 2, and the fault is intermittent, meaning it comes and goes. The fault can mean the auxiliary heater does not warm the cabin when it is needed. The code only concerns the second auxiliary heater and its relay.
Mögliche Ursachen
- The signal wire to auxiliary heater relay 2 is shorted to earth
- Break in the signal wire to auxiliary heater relay 2
- Faulty relay for auxiliary heater 2
- Contact resistance in the connections
Was Sie tun können
- 1Check the wires and connectors to the auxiliary heater relay for play, chafing and corrosion
- 2Check the auxiliary heater relay and its socket for contact resistance and oxidation
- 3Check that the fuses for the auxiliary heaters are intact. Their location is in the owner's manual or the fuse list
- 4Measure with a multimeter that the signal wire to the relay is not shorted to earth and has no break
- 5Clear the fault code and road test the car. If it returns, have a workshop investigate the relay and the auxiliary heater
Symptome, die Sie bemerken können1
- Poor heating in the cabin
Was der Fehler beeinflussen kann1
- The auxiliary heaters are switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.