VOLVO
CEM-2F60 - Twilight sensor. Signal too high
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
5 ModelleC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (5)
Was bedeutet der Fehlercode?
The CEM receives light information from the twilight sensor and uses it to set the brightness of the instrument lighting. The fault means the signal is too high, or the circuit has an open circuit or a short to battery voltage. The night light level is then used, and the instrument lighting may not behave correctly.
Mögliche Ursachen
- Contact resistance in the control module connector
- An open circuit in the signal ground wire
- An open circuit in the signal wire, or a short of it to supply voltage
- A damaged twilight sensor
Was Sie tun können
- 1Check that the connector at the CEM and at the twilight sensor is seated and not corroded
- 2Cover the twilight sensor with your hand, then shine a torch on it. If the instrument lighting clearly changes brightness, the sensor is probably fine
- 3Use a multimeter to check that the wires to the twilight sensor have no break or short to battery voltage
- 4If the wires are intact and the fault remains, replace the twilight sensor with an identical one
- 5After the work, clear the code and check that the instrument lighting works
Symptome, die Sie bemerken können1
- Instrument panel lighting is out
Was der Fehler beeinflussen kann1
- The night light level is used
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.