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Here is picture inverter main board. I read eeprom chip from board and i can see vin number inside. So it should be CRC inside eeprom, right? Does anyone has access to same chip? I need several dumps from different cars to find out CRC and how it calculates.

I tried, but my Chinese scanner was not able to do it.

I installed used MCU. Unfortunately it has VIN inside from car from which it was taken and so far I didn't find way how exchange this VIN to mine. So I have error P1B2D VIN mismatch right now. I want to go to dealer and ask if they can fix this problem. I tried to put MCU's VIN to EVECU and...

Yes, I can ask. I don't think if it help, but I will try. Thank you for you help!

Dealer did procedure for P1A15 and told that problem should be in inverter which cost $8k new. :(

I decided to go to dealer again. They asked $118 per hour only for diagnostic and they expect 3-6 hours for diagnostic or may be even more :(

[Edit this is Lic's history of this DTC that kicked off investigation and separate thread for P1A15] Apr 2018 June 18 Jan 19 today I checked by scope signals from ev-ecu to main(+), main(-) and precharge contactors. I was able to see main(-) and precharge signals, but not...

Lets continue in fresh topic which I opened about my problem.

I am using chinese launch x431. Today I opened small MCU window and checked what voltage is on pack wires when I try to switch on car. I used 2 voltmeters (good chinese and fluke). Both showed similar numbers something around 344-346v. (one time flukee showed 351v and chinese showed other...

INDEX to this thread. [Mod Edit, moved Lic's original fault history to post #5] [Edit, june 22, 2023 after going thru entire thread] This is a P1A15 INDEX Post with links to help find pictures and info quickly. Repair approaches to solve this problem: 1. Add resistor(s) to the hybrid to...

I used diagnostic software and made video of what is going on after turning key to ready position. I left link for video here earlier. It shows when and which contactors engages, what voltages reaches condenser, when condenser charge timeout flag appear. Car will not engage main(+) contactor...

So procedure to connect battery to car is 1. Engage main (-) contactor and precharge contactor to charge condenser through precharge resistor. 2. checking if condenser get full battery voltage in exact time. 3. Engage main (+) contactor and provide battery energy to car. In my case car stops on...

I don't see why you tell me this? You can check on working car - main (+) connects only after getting on condenser full battery voltage.

It does not make sense to check main(+) contactor because EV-ECU will attempt to use it only if condenser will get full voltage from battery through precharge resistor. In my case car stops this processes. If EV-ECU will apply main(+) contactor before getting full battery voltage on condenser -...

Yes, battery is under warranty, but I did already one attempt to show it to dealer and as you know dealer was not so good in finding out what is problem and how to solve it. Should I try one more time? How I can prove that problem in pack?

It makes sense to me. Any suggestions?

12v is fine for sure. I have actually 3 around me. One of them 6 months old original mitsubishi i-miev battery. It is fully charged and checked for capacity and ability to provide good current without big voltage drop. I am fine to work with hi voltage battery. I have a lot of experience with...

So after long time I returned to repair car. All those time car was sitting on driveway. I tried to remove error and start car but after about 30 attempts I was not able to get ready. So in summer I left car in state in which car was starting successfully time to time, but right now it does not...

No. If car starts - it is working fine. It takes charge, it drives well.

For me it is look reasonable to precharge condenser through charge resistor and after successful charging - connect main(+).