VOLVO
CEM-5A01 - Sun sensor. Signal too low
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Hva betyr feilkoden?
The CEM reads the sun sensor. If the signal is too low, the code is set. The cabin temperature then does not drop in strong sunlight, because the control module uses a substitute value for solar load.
Mulige årsaker
- The sun sensor wire is shorted to ground
- A damaged sun sensor
Hva du kan gjøre
- 1With the ignition on, vary the light on the sun sensor and watch its signal. Cover the sensor with your hand, then shine a torch on it from close range
- 2Use a multimeter to check that the wires between the CEM and the sun sensor have no break or short to ground
- 3Check that the connectors at the sun sensor and the CEM are seated and not corroded
- 4After the work, clear the code and check that the cabin cools when the sun shines
Symptomer du kan merke1
- Cabin temperature does not fall in strong sun
Hva feilen kan påvirke1
- The control module uses a substitute value for solar load, roughly the maximum
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.