Maui314
Posts: 27
Joined: Fri Jan 27, 2017 4:16 pm
Delivery Date: 27 Nov 2012

2011 bad inverter or motor?

Mon Aug 13, 2018 8:43 pm

Looking at a 2011 that had dealer replaced battery and now does not run. Dealer says it is either bad inverter or bad motor? Any thoughts? I know info is vague but I don’t have more to go on yet.

goldbrick
Posts: 252
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Colorado front range

Re: 2011 bad inverter or motor?

Tue Aug 14, 2018 8:29 am

Are you buying it for the battery or the whole car? Getting either the inverter or motor replaced at the dealer sounds very expensive. And what if that's not the problem or not the only problem?

Maui314
Posts: 27
Joined: Fri Jan 27, 2017 4:16 pm
Delivery Date: 27 Nov 2012

Re: 2011 bad inverter or motor?

Tue Aug 14, 2018 12:54 pm

Missed it- sold before I could get that.

mauiEVenthusiast
Posts: 9
Joined: Thu Aug 16, 2018 6:06 pm
Delivery Date: 17 Aug 2018

Re: 2011 bad inverter or motor?

Thu Aug 16, 2018 7:04 pm

So My friend who has several 13+ Leafs bought this leaf here on Maui. I have Leaf Spy Pro. The battery was replaced by Nissan in 2016. It shows a SOC of 67% and a SOH of 92.18%.

There are a lot of trouble codes. I think these are the most important ones here.

P0AA0 00C4 EV/HEV QNRH Hybrid Batt. Positive Contactor EVC-141
P317A 00C0 EV/HEV Motor System EVC-247.
P0A1B 000A MOTOR CONTROL Drive Motor A Cntrl Mod TMS-46
P0C79 000A MOTOR CONTROL Drive Motor A Inverter Voltage TMS-70
P324F 000A MOTOR CONTROL Drive Motor A IGBT TMS-99

The rest are ABS, HVAC, or Multi AV codes
Now this is my first time I have worked on a Leaf, however I have been servicing the family Prius for 13 years. I have fixed a lot of other Prius, and changed everything at least once. Inverters, traction batteries, HV contactors, Drivetrains, etc. I have an associates degree in electronics, so at least I know enough to not complete a High Voltage circuit with my self...

I have the factory service manual on the way. The dealer paperwork says the inverted is at fault, & the motor has a slight fluid leak so they want to replace it too. The repair quote was over $12k in parts, & over $2k in labor.

Any pointers will be greatly appreciated.
Mahalo
Last edited by mauiEVenthusiast on Fri Aug 17, 2018 10:16 am, edited 1 time in total.

mauiEVenthusiast
Posts: 9
Joined: Thu Aug 16, 2018 6:06 pm
Delivery Date: 17 Aug 2018

Re: 2011 bad inverter or motor?

Thu Aug 16, 2018 8:43 pm

Also the dealer replaced the 12V battery as part of the diagnostics protocol.

alozzy
Posts: 1169
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: 2011 bad inverter or motor?

Thu Aug 16, 2018 9:34 pm

Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

mauiEVenthusiast
Posts: 9
Joined: Thu Aug 16, 2018 6:06 pm
Delivery Date: 17 Aug 2018

Re: 2011 bad inverter or motor?

Fri Aug 17, 2018 2:38 am

@alozzy Thank you for sending me the 2013 EV section of the Factory Service Manual.

I believe the functionality is all the same, although I know the 2013 has a different physical layout than the the 2011; with the charger/ junction box up on top, inverter in the middle, and motor down below, all bolted together in a stack. The 2011 has the inverter mounted up high and in front, and the Junction Box behind, and the Motor below, all separate and mounted on a bracket. The schematics and functional aspects of the components are I believe the same.

EDIT:I got my download link for the complete 2011 FSM, and have been reading up on it.

According to the manual so far I have found the inverter problem code and the HV contactor code receive the same Priority level in the troubleshooting flow, but the code P0AA0 HV contactor diagnosis page says if there are other DTC's present, deal with them first, as the P0AA0 may be caused by the other problems... That is good I suppose since it appears the HV contactors are inside the battery case, & I do not want to drop the battery and split the case if that is not needed...

The traction battery was replaced by Nissan just before the end of the warranty in late 2016 I believe.

Actively looking for a parts car on Maui or other Hawaiian Islands, or for the parts online. Don't want to order an inverter if that is not actually the problem. Looking for how to test it first. Probably have to seek the Nissan Diagnostic software for advanced tests I guess...
Last edited by mauiEVenthusiast on Fri Aug 17, 2018 10:15 am, edited 1 time in total.

mauiEVenthusiast
Posts: 9
Joined: Thu Aug 16, 2018 6:06 pm
Delivery Date: 17 Aug 2018

Re: 2011 bad inverter or motor?

Fri Aug 17, 2018 10:13 am

goldbrick wrote:Are you buying it for the battery or the whole car? Getting either the inverter or motor replaced at the dealer sounds very expensive. And what if that's not the problem or not the only problem?


We bought the car with the intent to put the whole thing back on the road. It is very straight, clean inside and out, and a nice red color.

goldbrick
Posts: 252
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Colorado front range

Re: 2011 bad inverter or motor?

Fri Aug 17, 2018 10:36 am

I hope it works out well for you. They're great cars but I'm always nervous when something breaks that is only available at the dealer. I'd bet you can find whatever you need on ebay or whatever if you can DIY but that isn't something everyone can do.

Maui sounds like a perfect place for a Leaf since gas is expensive and nothing is too far away. Electricity is expensive too I guess but if you've got solar, Bob's your uncle.

And Bob is my uncle, he's lived on Oahu since 1968 and used to teach music at Kamehameha Schools....

mauiEVenthusiast
Posts: 9
Joined: Thu Aug 16, 2018 6:06 pm
Delivery Date: 17 Aug 2018

Re: 2011 bad inverter or motor?

Fri Aug 17, 2018 11:19 am

goldbrick wrote:I hope it works out well for you. They're great cars but I'm always nervous when something breaks that is only available at the dealer. I'd bet you can find whatever you need on ebay or whatever if you can DIY but that isn't something everyone can do.

Ebay can be awesome, For about $700 including shipping, I found the inverter. The HV Contactors and pre-charge circuit are all in a unit & it was only $65 plus some shipping. Not sure the order in which I should begin changing parts, as it seems to me that none of the HV componenets will work if the +HV contactor has failed, but the manual states to deal with other codes first... guess more research is needed. Thanfully the new owner of the Leaf has a lift for dropping the pack if that is what has to happen...

goldbrick wrote: Maui sounds like a perfect place for a Leaf since gas is expensive and nothing is too far away. Electricity is expensive too I guess but if you've got solar, Bob's your uncle.

And Bob is my uncle, he's lived on Oahu since 1968 and used to teach music at Kamehameha Schools....


LOL, bet uncle Bob likes it out here, having stayed for 50 years now. Maui is only 28 miles long, and is pretty great for a Leaf, as long as you are not doing the road to Hana & back in one day, or you are not trying to climb to the summit of Haleakala at over 10,000'. The level 3 access point charging costs $35 a month, There are a few free level 2 chargers around too, and there is a new off peak program to allow cheaper charging late at night. Solar, A power wall and a Leaf seem like a perfect combo. Something to work towards.

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