VOLVO
CRM-20B2 - Hall sensor 3. 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 3 draws more current than normal, and no sensor pulse appears when the hydraulic pump runs. The fault can be caused by a short to ground in the signal wire, a break or disconnected connector between the sensor and the control module, an internal fault in the sensor, or a fault inside the roof control module.
Mulige årsaker
- The signal wire from hall sensor 3 is shorted to ground
- Break in the connection between hall sensor 3 and the roof control module
- Internal fault in hall sensor 3
- Internal fault in the roof control module (CRM)
Hva du kan gjøre
- 1Read out and clear the fault code, test the roof and see whether the fault returns
- 2Check that the connector to hall sensor 3 is clean, fully seated and free from loose connections
- 3With a multimeter you can check whether the wire from the sensor has a break or a short to ground
- 4Repair a damaged wire. If the connector and wire are intact but the fault remains, a workshop should replace hall sensor 3
- 5If the fault still remains, a workshop needs to check the roof control module
Symptomer du kan merke2
- No or limited roof operation
- A message appears in the display
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