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Another busy weekend of MIEV repair here, after far too long a wait for parts. The tombstone form factor of the resistor is quite unusual, and I was unable to find a 33 ohm one anywhere, so I decided to go higher rather than lower and substituted a 47 ohm resistor. It, and a replacement relay...

I tested the relay this evening using an external supply, and it pulled in as expected with 5v across the coil. Contacts have no significant resistance when relay is on (meter showed 0.01 ohms) and are disconnected when the coil is unpowered. I'll replace it anyway, but on the surface the relay...

You can see the resistor in the end on board photo above. It is the white 'tombstone', and labelled "15W 33(ohm)J Micron 06T". As far as I can make out from the Micron catalogue it is an MNS15N330J - which isn't one of the fused varieties. It has four terminals - two per side - presumably to...

I'm sure I found 5V available in a previous check - also the processor coming up gives me a good feeling that we have supplies. I suspect the CAN error would have been caused when I was doing charge start power ups without the controller card connected. However, will do another power up test and...

I have had a useful day today, and have found my first actual failed component. I spent a long time removing the bulk of the silicone potting from the top of the AC input board - not a hard job but requires care and concentration. This didn't reveal any blackened or cracking components, but it...

Yes it does - all of the normal charge start behaviour happens. As far as I can tell the underlying problem is that the OBC is not detecting power because of an issue on the AC input board so the charging is never initiated. My vehicle has only PP (proximity pilot) - the CP (control pilot)...

And further... Confirmed that mains power is getting to the AC input board. I'd previously confirmed the wiring, but this was a double check. No AC apparent on either side of the fuse on that board. (edit: this can't be so - likely I've mismeasured) Checked each of the twelve wires coming from...

I'm back on my diagnostic trek again after a missed weekend (too much else going on). Thanks for the partial schematic - my board appears to be very similar. I believe that CHGP is a combination mains wakeup and charrger heartbeat signal, pulled up to 12V and monitored at the EV-ECU and pulled...

Here's my thinking (and observations). Bear in mind that on this older unit there is no external charge control device, so mains power comes straight in to the vehicle connector from the wall. There are the usual switch and resistors in the charge connector for the proximity signal, which is...

Alas no, though I do know someone who knows Mike. I joined the local chapter of AEVA at the same time as Covid landed, so opportunities to meet have been a little limited. This last weekend I reassembled the chaarger, checked all of the connections very carefully, and powered it all up again...

Unfortunately there's not a lot to see without doing a fair amount of picking and desoldering - all three power boards are stacked like this. I've peered in between the boards as best I can and cannot see any craters or broken devices, but this is far from conclusive. My next move is going to...

Today's progress on my OBC problem. I started by trying to make the 7 segment display on the control board show something - and in the process noticed that there are also five single LEDs down that edge of that card - conveniently labelled on the silkscreen as PFC_IOG, OCP, PFCACT, PFCPWM, and...

Ah well, interesting is more fun than easy, most of the time. :D My next opportunity to work on the problem will be on the weekend, so at that point I'll take a look at the 7 segment display when powered to see what I can see, check every fuse I can see (have already checked the 20A fuse...

Greetings all - it seems like it is my turn for the OBC problem. I have a 2010 iMiev which I've owned for almost 18 months - one of the early models imported to Australia which charges direct from the wall socket without a EVSE module in the charge cable. It has performed flawlessly since I...