VOLVO
CRM-20A2 - Hall sensor 1. Short to GND, disconnected or internal error
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 1 draws more current than normal, and no sensor pulse appears when the hydraulic pump for the roof runs. The fault can be caused by the signal wire being shorted to ground, by a broken connection between the sensor and the control module, or by an internal fault in the sensor or in the roof control module.
Mulige årsaker
- The signal wire is shorted to ground
- Broken connection between hall sensor 1 and the roof control module
- Internal fault in hall sensor 1
- Internal fault in the roof control module (CRM)
Hva du kan gjøre
- 1Read out and clear the fault code, test the roof in both directions and see whether the fault returns
- 2Check that the connector to hall sensor 1 is clean, fully seated and free from corrosion
- 3With a multimeter you can check whether the wire from the sensor has a break or a short to ground
- 4If a damaged wire is repaired the fault may clear; otherwise hall sensor 1 may need replacing by a workshop
- 5If the fault still remains, a workshop needs to check the roof control module
Symptomer du kan merke2
- The roof cannot be operated at all, or only to a limited extent
- Message in the text display
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