VOLVO
DEM-U300362 - Battery Voltage. Algorithm Based Failures. Signal compare failure
Układ
Moduł napędu na cztery koła AWD (DEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
9 modeliS60 (2011–), S80 (2007–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Pokaż modele wg rocznika i silnika (14)
- Volvo S60 (2011–)2011–2015
- Volvo S80 (2007–)2007–2015
- Volvo V40 Cross Country (2013–)2013–2015
- Volvo V60 (2011–)2011–2015
- Volvo V60 Cross Country (2015–)2015
- Volvo V70 (2008–)2008–2015
- Volvo XC60 (2009–)2009–2015
- Volvo XC70 (2008–)2008–2015
- Volvo XC90 (2003–)2005Tylko skrzynia biegów: TF-80SC AWD
- Volvo XC90 (2003–)2006Tylko silnik: B8444S · Tylko skrzynia biegów: TF-80SC AWD
- Volvo XC90 (2003–)2007–2010Tylko silnik: B6324S, B8444S · Tylko skrzynia biegów: TF-80SC AWD
- Volvo XC90 (2003–)2011Tylko silnik: B6324S5, B8444S · Tylko skrzynia biegów: TF-80SC AWD
- Volvo XC90 (2003–)2012Tylko silnik: B6324S5 · Tylko skrzynia biegów: TF-80SC AWD
- Volvo XC90 (2003–)2013–2014Tylko silnik: B6324S5, D5244T18 · Tylko skrzynia biegów: TF-80SC AWD
Co oznacza ten kod błędu?
The four-wheel drive control module (DEM) compares its own power supply with the voltage supplied to the central electronic module (CEM), which it receives over the CAN network. If the difference is too large for a longer period, the code is set. The code is only relevant if it has been active for a long time in the same drive and the driver notices that four-wheel drive does not work. Otherwise it can be ignored and cleared.
Możliwe przyczyny
- Voltage supply to the central electronic module (CEM) is too high or too low
- Incorrect voltage supply to the four-wheel drive control module (DEM)
- Contact resistance and oxidation in the connectors
Co możesz zrobić
- 1Check that the fuses are intact; their locations are in the owner's manual or on the fuse box cover
- 2Check the battery: a weak or old battery can cause voltage variations in the control systems
- 3Check the connectors to the control module and the central electronic module for oxidation and loose fit, and follow the wiring for chafing
- 4With a diagnostic tool, compare the DEM voltage with battery voltage live; a clear difference with the engine running suggests a voltage fault
- 5If the fault remains after these checks, have a workshop trace the voltage supply to the central electronic module
Objawy, które możesz zauważyć1
- Four-wheel drive does not work
Na co może wpływać usterka1
- Four-wheel drive is disengaged
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.