W211 Sbc power suply at control unit A7/3nl

[motorsport]

Hi to all have problem with sbc

dtc stored is C26EE check power supply at control unit A7/3nl (scb control unit)

i have try read and write and eeprom with abritus but without succes how repair this unit ?

and i have check all fuse all ok

[mercis]

swap sbc,motor habe short circuit

[motorsport]

so need change with another parts?