Antaris
Posts: 24
Joined: Thu Jan 17, 2013 9:00 pm

Re: Not Charging. Main Inverter Fuse blown

Fri Mar 23, 2018 12:35 pm

The service manager showed me the failed onboard charger.
When I got home I opened the back hatch and there was the brand new one on the
left side looking forward. Part number is ZHTP1529R by nichicon.
I googled "wrecked I-miev" a couple of days ago and their is a complete 2012 motor package
sitting on the shelf at B & R Auto Wrecking in Graham WA for $750.97.
Funny, the picture they show of the top looking down has a brand new looking onboard charger.
I have considered purchasing the package but the logistics of getting it home are more than I can deal with right now.

Lic
Posts: 46
Joined: Mon Dec 28, 2015 2:11 pm
Location: Canada

Re: Not Charging. Main Inverter Fuse blown

Mon Apr 02, 2018 11:57 pm

Hello
It is look like may be I have similar problem. I didn't use car long time and I got died 12v battery. I charged battery, check it and found it in good condition. It is new battery, which I installed 3 months ago. So I putted battery back and I decided to connect only one wire (positive) and leave other one (negative) disconnected to prevent to discharge 12v battery again. I was not planning to use car for long time again. But little bit letter I decided to check if car will start, so I connected negative wire but didn't tight it well. I started car - it showed me ready and the :!: over the car lights lit up on the dash. Next was probably my mistake - I decided to check if car runs well. I ride around neighborhood and I did couple good stops. I came back to parking, turned off car, turned it on again and I didn't get ready. I got the 12volt alert and the :!: over the car lights lit up on the dash. I checked 12v battery again - it is fine, checked charging - no charging. I checked some fuses under hood - nothing. So may be it is main fuse in inverter? Where are located this fuse? Where to buy it?

kiev
Posts: 815
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Not Charging. Main Inverter Fuse blown

Tue Apr 03, 2018 4:48 am

Even a brand new lead acid 12V battery will get drained just by sitting for 3 months without charging. It may still read 12.6V open circuit, but won't hold up under load.

If the negative cable came loose while driving, then depending upon the load, that could do some major damage throughout the car. The negative side is the ground reference for the chassis. Current does not like to be interrupted, and if is, then it will find or make a way home thru whatever path it can.

Hopefully you just have a weak 12V and the loose cable just shutdown the ECUs without doing damage.
kiev = kenny's innovative electric vehicle

Lic
Posts: 46
Joined: Mon Dec 28, 2015 2:11 pm
Location: Canada

Re: Not Charging. Main Inverter Fuse blown

Tue Apr 03, 2018 10:41 am

I checked 12v battery under load - it is fine. So my opinion is the same - something died in car. Could it be main fuse in inverter? Where is it located?
I tried to use canion - it shows cells voltages and temperatures.

PV1
Site Moderator
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Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: Not Charging. Main Inverter Fuse blown

Tue Apr 03, 2018 10:51 am

My first thought is that the loose negative cable caused some problems for the DC-DC converter, which is responsible for charging the 12 volt battery. I would disconnect the negative cable for a few hours, then reconnect and tighten it and then start the car. Let us know if it achieves READY.
:idea: :idea: :idea: :!: :!:

Dropbox maintenance in progress. If any of my links aren't working after November 17, please PM me and let me know which one isn't working.

Thanks.

Lic
Posts: 46
Joined: Mon Dec 28, 2015 2:11 pm
Location: Canada

Re: Not Charging. Main Inverter Fuse blown

Tue Apr 03, 2018 12:09 pm

I will try. Also I bought launcher tester and I will able to read errors, may be it will help find what is problem.

kiev
Posts: 815
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Not Charging. Main Inverter Fuse blown

Tue Apr 03, 2018 9:34 pm

The fuse is located beneath the little access cover on the inverter--no need to remove the main cover, plus it requires a jack-screw to break the main lip sealant.

Image
kiev = kenny's innovative electric vehicle

Lic
Posts: 46
Joined: Mon Dec 28, 2015 2:11 pm
Location: Canada

Re: Not Charging. Main Inverter Fuse blown

Tue Apr 03, 2018 11:34 pm

Thanks!

Lic
Posts: 46
Joined: Mon Dec 28, 2015 2:11 pm
Location: Canada

Re: Not Charging. Main Inverter Fuse blown

Sat Apr 07, 2018 7:32 pm

So i connected tester and got errors p1a15 active and p1ae6 saved.

kiev
Posts: 815
Joined: Sun May 03, 2015 7:15 am
Location: The Heart o' Dixie
Contact: Website

Re: Not Charging. Main Inverter Fuse blown

Sat Apr 07, 2018 8:21 pm

P1A15 is High-Voltage System Error #1

Description of how the system operates:
The high-voltage circuit activation and shutdown are controlled by the EV-ECU. The EV-ECU also monitors the voltage of the smoothing condenser [the big ass capacitor] in the EMCU via the CAN communication.

How does this code get set?
If the charging time of the smoothing condenser in the EMCU exceeds a specified time, the diagnosis code No. P1A15 will be set. That is to say, it is taking too long for the capacitor to charge up to the full level, which is equal to the voltage of the pack.

Probable Causes in the service manual include:
Damaged wiring harness or connector(s)
Malfunction of the high-voltage fuse No.1 (Main, 280A) (inside the main battery assembly, accessible)
Malfunction of the main battery assembly (possibly damaged contacts of main relays, aka contactors)
Malfunction of the EMCU

In your case another reason could be that the Aux battery was disconnected/loose at the negative terminal, and the 12V signals to the coils of the Main Contactors was interrupted, which caused the contactors to open or chatter. This caused the slow charging of the big Capacitor in the MCU. This could have caused arcing and sparking and debris buildup on the contact points such that now the car can't get to READY.


Code P1AE6 is for an EEPROM Error in the Battery Monitoring Unit, if the BMU detects an error P1A51 then it sends a message to the EV-ECU over the CAN bus. The P1A51 code is thrown if the Aux Battery negative terminal is disconnected before the BMU has time to write data to the EEPROM after the key is turned to OFF.

"When the electric motor switch is turned in the LOCK (OFF) position, the BMU should execute the finishing process for several seconds. When the battery cable is disconnected from the auxiliary battery (-) terminal during the BMU finishing process, the BMU learning value could be deleted."

The lesson here is that the 12V Aux battery is very important for operation of the car, and much care must be taken to ensure no loose connections, especially the negative terminal. i always remove the negative terminal first, then the positive terminal, and always with the key out of the ignition switch.
kiev = kenny's innovative electric vehicle

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