VOLVO
IEM-U1A4B62 - Control Module Processor B. Algorithm Based Failures. Signal compare failure
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) compares the calculated torque with the requested torque. When the difference becomes too large, the code is stored. The fault is only checked once the car is driven in gear D or R.
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 and clear the code, then road test in D or R to see whether it returns
- 2If you have diagnostic equipment: compare the calculated and requested torque for ERAD in live data while driving; they should follow each other
- 3Have a workshop check whether new software is available for the control module and install it if needed
- 4Do 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 påvirke2
- Electric propulsion is not possible
- Brake energy recovery from the electric rear axle ERAD is not possible
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