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Got MCU #2 all put back together and have connected the RWB motor leads as advised. Going to rest now. By the way, I have been sharing my i-miev journey over on Dala's EV discord channel and it just so happens a guy there asked if he should buy a used ion and try to get it working. :) I shared...

I was mulling this over on the way home tonight just now and I really don't know. That's a good question. Two good questions. So are you saying because we don't know we shouldn't risk it? If so, I guess that's a good point. I guess I'll hook up the RWB motor leads as it's intended to be...

We are curious-- so fill us in about trying to start to READY without the motor windings attached? I'm just taking the advice given earlier to see if the DTC codes don't appear while having the motor disconnected should that still be the cause. Am I misremembering that this advice was given...

Well, MCU#2's IGBTs test out good. I'm getting fast at testing them as well. It feels good to know how to know for sure something is good or not. I also removed the left rear tire and drum cover. It spins freely now. Motor is smooth. So this seems to me to indicate the cause may be in another...

I've now tested MCU#3's IGBTs completely. They are good. I am now opening up MCU#2 to test the IGBTs but it's 10pm now here so not sure I'll get it done tonight.

Alright. I've properly tested the IGBTs in MCU#1. Now that I understand better what I'm doing. Thank you. I've confirmed that Gate 2 in the middle IGBT (which I think is IGBT#1) has shorted out. As it shorts to Gate 2 pin 2 as well as Emitter 1 pins as well as the high power Emitter...

Okay. Will do. Thanks for the advice. I am using old laptops and keeping them offline and dedicated just for this as I'd heard about the malware thing. It's true. My main PC is detecting them in the installers and downloads from the websites. Fun. I'll try Diagbox with the full chip cable...

I also will work on getting several old laptops set up today for the three new scan tools I just received. I'm going to set up one for Win7 32bit. One for W7 64bit and a third for W10 64bit. I'm also setting a restore point so I can reinstall from a fresh baseline as the software is flaky from...

Thank you for this. I'm finally learning to use a DMM correctly. It's about time. Feels good. Checking a capacitor using resistance measurement is only useful to show if it is shorted or open. The meter leads will charge up the capacitor so the reading will fluctuate and the number has no real...

Great video! So seems like I should retest the three new IGBTs in MCU #3 with this proper methodology to 100% ensure they are good.

Okay. I've been able to move the orange power leads over from my original MCU to the 3rd MCU now. He also cut another wire I finally noticed, so I had to move that as well. All done. I also tested the MEIDEN capacitor. Seems it is 40.00 M-Ohms on average from each pair of leads.

I received the 3rd MCU today. I decided to open it up immediately upon arrival to check the IGBTs before we connect this MCU. That way we have a baseline to know the condition should they get damaged later, we'll know they were good before they went in the car. I recorded a video of me...

Okay. Thanks guys. Excellent write ups! It's Monday here now so I won't be able to do much today. I got kinda tired late yesterday as I had other honey-do tasks to get done so had to stop there. But I'll get back on it again tonight for at least an hour or two if at all possible. I'll likely...

I also tested the the static resistance measurement with both DMMs and found the resistance to be 0.000 in k-ohms on my green DMM for all three pairs of R,W,B. This DMM allows all three ranges to be manually selected (k-ohms, m-ohms and ohms). My other DMM auto detects and gives 000.1 ohms for...

Thank you so much for all your help again today. Okay. I've shorted out R,W,B to each other in pairs separately and all together. It becomes very hard to turn the axle when they are shorted together in pairs and all three together. I will try to understand and get the resistance to chassis...

Okay. I got the drum cover off finally. Had to find two 12mm head bolts to use in the two holes to separate the drum from the car. I'll post two pics of before and after. Yep. You're right again as always. :) I can confirm after removal that all the resistance seen and felt before was...

Oh, I wasn't quite realizing this is an AC motor. Thank you for nailing that down in my mind firmly from here on out. Got it. Will do. I was also forgetting about connecting the motor leads together to see if it increases turn resistance. Will do. I've got the tire off now and opening up the...

When you say "ON" you mean ACC? Which I believe is the half position before full start up? I just want to make sure we define our terms before I misspeak. So far when the ignition is in the half position before full start position it does not read DTC codes nor talk to the car. No codes can be...

Okay. Here is the i-miev motor UVW resistance test results video.

Thanks for that clarification detail. The wheel on the other side doesn't spin when I spin the other side. So I guess this means the test is still valid with both wheels off the ground? Will do next. It was? Where did I post that showing current at 2000 amps? I guess I didn't know to even...