VOLVO
ECM-0024 - Auxiliary heater relay 1+2. Auxiliary heater 2, signal too low. Intermittent fault.
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
3 modeleS70 (1997–2000), V70 (1997–2000), V70 (2000–2008)
Co oznacza ten kod błędu?
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.
Możliwe przyczyny
- 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
Co możesz zrobić
- 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
Objawy, które możesz zauważyć1
- Poor heating in the cabin
Na co może wpływać usterka1
- The auxiliary heaters are switched off
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.