VOLVO
TVM-U300362 - Battery Voltage. Algorithm Based Failures. Signal compare failure
System
Unknown System / Manufacturer Specific
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
Although the code is named battery voltage, it concerns the TV module checking its own system voltage against a reference held in the central electronic module (CEM). The code only needs action if it has been active for a longer period during the current driving cycle and you notice the TV function is not working. The fault can come from a break or a short to ground in the supply wire.
Possible causes
- The supply cable is short-circuited to ground
- Open circuit in the supply cable
What you can do
- 1Read off the code, clear it and test-drive the TV function to see whether it returns.
- 2Check that the fuses for the TV system are intact.
- 3Check that the battery is in good condition and that the battery terminals are clean and tight.
- 4Look for chafed or pinched spots on the supply wire to the TV module.
- 5Use a multimeter to check that the supply wire has no contact with ground (the bodywork) and is not broken.
- 6If the fault remains, have a workshop check the power supply to the TV module.
Symptoms you may notice1
- TV function does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.