VOLVO
CEM-8B09 - Light switch module (LSM). Faulty signal
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Hva betyr feilkoden?
The CEM feeds the LSM backlighting from one output, and the module sends back a signal that the CEM compares with the outgoing one. When the two signals do not match, the code is set. This can be caused by a short circuit to supply voltage or an open circuit in the wire.
Mulige årsaker
- The background lighting signal wire to the LSM is short-circuited to supply voltage
- Open circuit in the background lighting signal wire to the LSM
Hva du kan gjøre
- 1With the ignition on and the lights switched on, check whether the instrument panel lighting comes on
- 2Switch the ignition off and unplug the connector to the light switch. Check that it is clean, firmly fitted and undamaged
- 3Use a multimeter to check that the signal wire is not broken and has no contact with battery voltage
- 4If the fault remains, have a workshop check the signal wire and the module
Symptomer du kan merke1
- The instrument panel lighting does not work
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.