VOLVO
CEM-3F90 - Fuel pump relay. Open-circuit or short-circuit to ground
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
5 modeliS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Co oznacza ten kod błędu?
The CEM checks and activates the fuel pump relay after the immobilizer has approved its check. The relay sits inside the CEM. The code is set when the voltage on the fuel pump output is too low. The engine does not start.
Możliwe przyczyny
- A damaged power supply fuse
- An open circuit in the supply wire between the engine bay fuse box and the CEM
- The supply wire between the CEM and the fuel pump is shorted to ground
Co możesz zrobić
- 1Check the fuse for the fuel pump power supply in the engine bay. If it has blown, replace it once
- 2Use a multimeter to check that the wire between the CEM and the fuel pump has no break or short to ground
- 3Warning: do not connect an external power source directly to the fuel pump without first disconnecting the CEM connector, since the CEM can be damaged
- 4After the work, clear the code and check that the engine starts
Objawy, które możesz zauważyć1
- The engine does not start
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.