VOLVO
DEM-U300362 - Battery Voltage. Algorithm Based Failures. Signal compare failure
System
Allradantrieb (DEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
9 ModelleS60 (2011–), S80 (2007–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (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–)2005Nur Getriebe: TF-80SC AWD
- Volvo XC90 (2003–)2006Nur Motor: B8444S · Nur Getriebe: TF-80SC AWD
- Volvo XC90 (2003–)2007–2010Nur Motor: B6324S, B8444S · Nur Getriebe: TF-80SC AWD
- Volvo XC90 (2003–)2011Nur Motor: B6324S5, B8444S · Nur Getriebe: TF-80SC AWD
- Volvo XC90 (2003–)2012Nur Motor: B6324S5 · Nur Getriebe: TF-80SC AWD
- Volvo XC90 (2003–)2013–2014Nur Motor: B6324S5, D5244T18 · Nur Getriebe: TF-80SC AWD
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- 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
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- Four-wheel drive does not work
Was der Fehler beeinflussen kann1
- Four-wheel drive is disengaged
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.