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View Full Version : Synchro CEM-VISTEON ESU121



ozzzo
11th January, 2022, 04:42 PM
Good evening mates

I have this Volvo that has a problem that lost synchronization after battery discharge. CEM has fault in it saying about lost communication with ECU.

ECU is ESU-121 with 95040 eprom inside and CEM has 1K79X mcu inside.
Can someone please make the synchronization on this one? I haven't found it on small soft anywhere

Thanks in advance

Both eprom attached

kaponne
15th January, 2022, 09:39 PM
the sync is fine. check fuses