Co oznacza kod błędu ECM-U012086?

Diagnostyka i definicja kodu błędu dla ECM-U012086 (Volvo S60 (2011–), Volvo S60 (2011–), Volvo S80 (2007–)). Zamów naprawę w OBD Tuning.

VOLVO

ECM-U012086 - Lost Communication with Starter/ Generator Control Module. Bus Signal / Message Failures. Signal invalid

Układ

Sterownik silnika (ECM)

Modele Volvo, których dotyczy ten kod błędu

Dotyczy następujących modeli:

7 modeli

S60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)

Pokaż modele wg rocznika i silnika (19)

Co oznacza ten kod błędu?

The engine control module (ECM) controls the alternator charging voltage via LIN communication with the alternator control module (ACM), on request from the central electronics control module (CEM). The code is set when the engine control module detects a disturbance in the communication, and it concerns an invalid signal on the LIN network. Although the code is titled lost communication, it concerns the signal from the alternator control module.

Możliwe przyczyny

Internal fault in another control module on the same part of the LIN network
Faulty alternator control module (ACM), including its charge regulator

Co możesz zrobić

1Check that the fuses are intact and that the battery is well charged
2Check the connectors at the alternator and at the engine control module for loose or oxidised contacts
3Look for chafed wiring on the LIN signal wire. Use a multimeter to check that it has no break and is not shorted to ground or supply voltage
4If you have a diagnostic tool: read the alternator status in live data with the engine running, and check whether the fault returns after the connectors have been checked
5If the fault returns: have a workshop with diagnostic equipment check the alternator control module and any other control modules on the LIN network

Objawy, które możesz zauważyć2

The battery discharges
The battery is dead or shows low voltage

Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.