VOLVO
IEM-U1A4B82 - Control Module Processor B. Bus Signal / Message Failures. Alive / sequence counter incorrect / not updated
System
Ukjent system / Merkespesifikk
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
1 modellV60 (2011–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
The electric rear axle drive module (IEM) monitors its internal components and the communication with the clutch control for the electric rear axle (DCC). The code is stored when the microprocessor has an internal fault, or when the DCC is not communicating properly. The fault is only checked once the test has started at ignition on.
Mulige årsaker
- Software error in the electric rear axle drive module (IEM)
- Internal fault inside the ISC voltage converter
Hva du kan gjøre
- 1Read out, clear the code, start the car and see whether it returns
- 2Have a workshop check that the connectors between the IEM and the clutch control are fully engaged and free from corrosion
- 3Have a workshop with diagnostic equipment check the communication with the clutch control and update the software if needed
- 4If the fault remains, have a workshop check the clutch in ERAD
- 5Do not work on the electric rear axle or its high voltage system yourself; have a workshop carry out those checks
Symptomer du kan merke4
- Warning symbol and text message in the display
- PURE drive mode disengages by itself or is not available
- AWD drive mode disengages by itself or is not available
- HYBRID drive mode runs with the combustion engine active all the time or too often
Hva feilen kan påvirke3
- Electric propulsion is not possible
- The clutch in ERAD may be mechanically damaged
- Brake energy regeneration from the electric rear axle ERAD is not possible
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