Astra H Ignition Key Issue: ABS/Traction Light On, U2105-00 & B3649-08 Errors Detected

Hello, interested and knowledgeable about the subject. I have a problem with the Astra h. Nothing bad happened to her until she suddenly quit smoking, i.e. after turning the key the car lights with the key and ABS / traction light are on. Relay fuses are functional - all removable and checked separately under low load. Impeding does not show any errors. The starter is functional because after connecting the plus to the relay K9 starts spinning. The other controls and steering wheel controls work properly. I connected to the opcom and a few errors popped up, such as U2105-00 (no communication with ECM), B3649-08 (left wheel, problem with resistance) and here I would like to add that about a year ago I changed the bearing and since then the indicator light has been lit from ABS and the reason may be a measurement value different from the other wheels on the bearing coil, i.e. when measuring with a multimeter in the 'diode' range and when changing poles, the measurement value should be at least 2x higher. Error B3977-00 UEC (incorrect environmental identifier) and other errors that in my opinion arose due to lack of communication with the ECU controller, such as: U2139-71 (incorrect signal from CIM P0115-71, P0460-71, P0500-71, P0654-71 , P0550-71. The last 6 errors were cleared, but it is not known whether they will return. I have not yet checked the power supply and mass on the ECU because I do not know which cable and here I have a request to send a photo or a shemata. I attach photos of the controller. If someone has any ideas please help. Astra is from 2008, engine Z14XEP.

Of course, I disconnected the battery (annual) and nothing helped. I read somewhere on the forum that in astras, if one of the devices fell, e.g. ABS, turning the starter is automatically impossible. ABS doesn't give me peace because after disconnecting the plug from it, which is normal, U2108-00 error appeared, i.e. no communication with ABS, but after reconnecting this communication is still gone. There are cases that the pumps sit down but no other errors pop up. Therefore, I think that the search must start with checking the connection between the battery and ECM (error u2105-00) only which are the cables on the plug, which ecu plug and where to look in the fuse box. Does anyone have a wiring diagram?

Sorki, that I answer so late but the most important thing is that the reason for the lack of communication with the ECU found. There is a fairly thick cable harness between the battery base and the engine that reaches the ECU. This bundle was insulated with black material insulation, in which there was a small gray dot. It turned out that this dot is a dimmed red wire that powers the controller. After inserting a piece of wire Asterka came back to life. Thank you to all those who offer help and greetings to readers. I close the topic.