VOLVO
CRM-20B1 - Hall sensor 3. Shorted to supply
System
Chassis (Bremser, styring, fjæring)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
1 modellC70 (2006–2013)
Vis modeller per årsmodell og motor (1)
Hva betyr feilkoden?
Hall sensor 3 draws less current than normal, and when the hydraulic pump for the roof runs, no signal comes from the sensor. This mainly points to a short to voltage in the signal wire between the sensor and the control module. A damaged sensor or a fault inside the roof control module can also cause the code.
Mulige årsaker
- Short to voltage in the signal wire from hall sensor 3
- Damaged hall sensor
- Internal fault in the roof control module (CRM)
Hva du kan gjøre
- 1Read out and clear the fault code, then test the roof in both directions and see whether the fault returns
- 2Check that the connector to hall sensor 3 is firmly fitted and free from corrosion
- 3With a multimeter you can check whether the signal wire has contact with voltage
- 4If no fault is found in the wire, a workshop may need to replace hall sensor 3
- 5If the fault remains, a workshop needs to check the roof control module
Symptomer du kan merke2
- The roof cannot be operated, or only partly
- Message in the text display
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