VOLVO
DEM-U300362 - Battery Voltage. Algorithm Based Failures. Signal compare failure
System
Firehjulsdrift (DEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
9 modellerS60 (2011–), S80 (2007–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Vis modeller per årsmodell og motor (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–)2005Kun girkasse: TF-80SC AWD
- Volvo XC90 (2003–)2006Kun motor: B8444S · Kun girkasse: TF-80SC AWD
- Volvo XC90 (2003–)2007–2010Kun motor: B6324S, B8444S · Kun girkasse: TF-80SC AWD
- Volvo XC90 (2003–)2011Kun motor: B6324S5, B8444S · Kun girkasse: TF-80SC AWD
- Volvo XC90 (2003–)2012Kun motor: B6324S5 · Kun girkasse: TF-80SC AWD
- Volvo XC90 (2003–)2013–2014Kun motor: B6324S5, D5244T18 · Kun girkasse: TF-80SC AWD
Hva betyr feilkoden?
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.
Mulige årsaker
- 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
Hva du kan gjøre
- 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
Symptomer du kan merke1
- Four-wheel drive does not work
Hva feilen kan påvirke1
- Four-wheel drive is disengaged
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