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by coulomb
Fri Oct 19, 2018 6:46 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 269
Views: 12884

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

am I understanding this correctly that these cap and resistor are there to protect the relay contact, mainly upon disconnect ? No. The relay merely shorts the pre-charge resistors, so that full power is available for charging. Certainly, it's best to stop charging by the switch on the J1772 connect...
by coulomb
Thu Oct 18, 2018 7:02 pm
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 269
Views: 12884

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

I happened across this today, from the DiyElectricCar.com forum, DIY Tesla Controller topic: "Root cause of the drive unit inverter failures discovered and fixed. NOT caused by overcurrent through the igbts but rather the combination of using 8.8kHz switching frequency through a very low induct...
by coulomb
Thu Oct 18, 2018 6:11 pm
Forum: General Technical Discussions
Topic: my Miev will not charge
Replies: 128
Views: 20251

Re: my Miev will not charge

Well my wife has vowed not to get an EV again until they are commonplace. Totally understandable, but really bad for EV adoption in Australia. Though it sounds like dealers in the USA aren't necessarily much better. Hopefully that is not too far away. Oh joyful day when that happens. Part of our de...
by coulomb
Thu Oct 18, 2018 3:07 pm
Forum: General Technical Discussions
Topic: my Miev will not charge
Replies: 128
Views: 20251

Re: my Miev will not charge

All we know is "software giving errors". It sounds like a VIN mismatch error to me. We know that old and replacement chargers from some junkyard don't care about VINs, but maybe brand new chargers do. Presumably, they are following service procedures for your early model vehicle, but I don...
by coulomb
Sun Oct 14, 2018 4:41 am
Forum: General Technical Discussions
Topic: my Miev will not charge
Replies: 128
Views: 20251

Re: my Miev will not charge

Now it won't go into "ready" mode. We reassembled everything after replacing snubber caps in the OBC. Put in temporary fuse. No charging. Decided to sleep on it. Is the temporary fuse easy to remove? I'd pull the service connector and wait 10 minutes before doing this. If so, does it now ...
by coulomb
Sat Oct 13, 2018 6:12 pm
Forum: Instruments - Radio/USB/Nav - CAN - Climate Controls - Remote
Topic: What actually is MUT III in detail?
Replies: 8
Views: 358

Re: What actually is MUT III in detail?

VCI = Virtual Circuit Identifier? Vehicle Communications Interface. That's the hand-held part; the MUT looks like it's a smallish ruggedized laptop. There are two models; the one with the small display and three buttons, and the VCI-Lite without a display at all. I believe that the VCI can communic...
by coulomb
Sat Oct 13, 2018 5:56 pm
Forum: Instruments - Radio/USB/Nav - CAN - Climate Controls - Remote
Topic: What actually is MUT III in detail?
Replies: 8
Views: 358

Re: What actually is MUT III in detail?

What about leaving the MUT software alone and just "faking" a VCI? You still need to know the various CAN IDs, data formats, how to clear error codes, etc. All that required detail is only contained in the MUT software, as far as I know. Certainly, we'd want a hardware platform more conve...
by coulomb
Fri Oct 12, 2018 5:50 pm
Forum: Instruments - Radio/USB/Nav - CAN - Climate Controls - Remote
Topic: What actually is MUT III in detail?
Replies: 8
Views: 358

Re: What actually is MUT III in detail?

I think it's possible to write an open source MUT clone. I have a copy of a Mitsubishi update CD which may contain the required information. But it will require a lot of reverse engineering and time. There is a small chance I'll find the time to attempt this, and that I have enough skills to do it.
by coulomb
Fri Oct 12, 2018 6:20 am
Forum: General / Main Owners Forum
Topic: And now my I will not charge!!
Replies: 44
Views: 2675

Re: And now my I will not charge!!

Could this be a software or firmware issue with the chargers? It can't be the On Board Charrger (OBC), as it's not involved in fast charging. But it could be an issue with whatever controls the fast charge, I'm guessing either the BMS master (whatever its proper name is) or the EV-ECU. That determi...
by coulomb
Mon Oct 08, 2018 4:35 am
Forum: Batteries and Battery Management
Topic: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter
Replies: 269
Views: 12884

Re: Troubleshooting and repair for On-board Charger (OBC), DC-DC Converter

I worry that while the TE Connectivity (guessed by the CGS marking) part is rated for 10 times nominal power for 5 seconds, a cheapo 5 W resistor is rated for only 5 times nominal power for 5 seconds. [ Edit: guessing the TE Connectivity SQ series . ] This is in a part that will see 120 VAC (presumi...

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