DarkStar
Posts: 2066
Joined: Sat Jul 17, 2010 10:06 am
Delivery Date: 25 Mar 2011
Leaf Number: 568
Location: Hillsboro, Oregon, USA
Contact: Website

Re: L2 not charging, L1 ok

Sun Jan 01, 2012 10:41 pm

They would probably determine that the diode is broken and replace the whole charger. That's what they did for the guy in SE Portland.
Mikiko (2011 Nissan LEAF ETEC) Status:
Reserved: 04/20/10 | Ordered: 10/01/10 | EV Project Blink Installed: 03/22/11 | Delivered: 03/25/11 | VIN: 568

Oregon Electric Vehicle Association | Electric Auto Association

pjoseph
Posts: 108
Joined: Wed Aug 31, 2011 5:01 pm
Delivery Date: 24 Sep 2011
Leaf Number: 1186
Location: Austin, Tx

Re: L2 not charging, L1 ok

Mon Jan 02, 2012 2:27 pm

L2 charging failed again after working for just one day. Back to square one. Plan on taking it to the dealer tomorrow.
2011 Blue Ocean SL
96k miles, Sept 2018
Traction battery replaced, Sept 23rd, 2015
Powered by a 6.44 kW AC PV system

pjoseph
Posts: 108
Joined: Wed Aug 31, 2011 5:01 pm
Delivery Date: 24 Sep 2011
Leaf Number: 1186
Location: Austin, Tx

Re: L2 not charging, L1 ok

Wed Jan 04, 2012 11:13 am

Here's the very helpful update i got from Nick, the service technician at the dealer.

I brought your LEAF in the shop this morning to perform some tests on the charging system diode, and to pull trouble system codes. Unfortunately there were no codes stored but the diode check was enough for nissan engineers to deem as a failed part.
We are ordering an on board system charger..


This thread will hopefully be of help for the next LEAFer who might run into this particular issue. Only 2 have been reported so far (including mine).
2011 Blue Ocean SL
96k miles, Sept 2018
Traction battery replaced, Sept 23rd, 2015
Powered by a 6.44 kW AC PV system

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garygid
Gold Member
Posts: 12464
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: L2 not charging, L1 ok

Wed Jan 04, 2012 2:30 pm

I would be a shame if the diode blowing (or shorting?) requires
a whole new, non-noisy Charger to be installed into your LEAF.
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

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abasile
Posts: 1922
Joined: Thu Sep 02, 2010 10:49 am
Delivery Date: 20 Apr 2011
Location: Arrowbear Lake, CA

Re: L2 not charging, L1 ok

Wed Jan 04, 2012 2:37 pm

garygid wrote:I would be a shame if the diode blowing (or shorting?) requires a whole new, non-noisy Charger to be installed into your LEAF.
Unless it happens in 2013 and they end up giving you a new 6.6 kW charger! :lol:
2011 LEAF at 71K miles, pre-owned 2012 Tesla S 85 at 98K miles
LEAF battery: 9/12 bars and < 49 Ah (-28% vs. new)
Tesla battery: 250+ miles of range (-5% vs. new)

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hill
Gold Member
Posts: 1870
Joined: Wed Apr 21, 2010 4:05 pm
Delivery Date: 27 Mar 2011
Leaf Number: 0659
Location: Lake Forest, CA

Re: L2 not charging, L1 ok

Fri Jan 06, 2012 8:27 pm

DarkStar wrote:
pjoseph wrote:Took the car in to the dealer's service department. We managed to duplicate the problem just exactly as Davewill had mentioned above. Charging works on L1 & AV, but fails on Chargepoint & Schneider.
Ding! I know what the problem is!

The diode in your charger unit is fried. The L1 & AV units don't test for the +/- 12 volt signal, while the ChargePoint, Schneider, and Blink do.

A guy here in Portland had to get his whole charger unit replaced in his Leaf because of a problem with very similar symptoms.
Gee - if SOME GROUP of Leaf'rs had problems with their on board charger(s) which continued causing RFI throughout their house . . . . and Nissan ignored it - and continued to ignore it . . . month after month . . . it'd be a crying shame if those SAME Leaf'rs managed to fry that same diode in THEIR on board sharger, wouldn't it? Accidentally of course. They'd ALL get new on board chargers (more quickly), in stead of just having to wait for ALL ETERNITY for Nissan go get around to simply adding a new filter for their noisy on board charger. Gee ... they wouldn't even have to wait until heck freezes over before Nissan got of their numb back sides to take care of the old issue. Gee - I wonder which is more costly ... a measly torrid, or an entire charger. Hmmm. :evil:

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garygid
Gold Member
Posts: 12464
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: L2 not charging, L1 ok

Fri Jan 06, 2012 9:44 pm

Mostly, when diodes blow, it is an open-circuit, not a short-circuit (***).

(***) Correction from Ingineer:
He says that Diodes usually fail by shorting (closed circuit) rather than open-circuit as I suggested might be the case. I did not know that. Perhaps signal, power, and Zener diodes are different? Recently, some of my Zener Diodes have failed (overheated), going open-circuit with no increase in current.

--------
An open-circuit at the diode might just make the car not charge at all, since the EVSE might not detect the car being plugged in at all.

Hard to say for sure what would happen with any particular car-EVSE pair. But, likely no charging.

-------
A closed-circuit failure would give the "charge OK by some EVSEs, but not charge by other ECSEs" symptom.

The EVSEs that do not check for the diode (AV, Nissan L1, etc.) would work, but those EVSEs that DO check for the diode (as they should) will (normally) refuse to charge.
Last edited by garygid on Wed Jan 11, 2012 10:30 pm, edited 1 time in total.
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

Jasonpara
Posts: 14
Joined: Tue Jan 25, 2011 9:52 pm

Re: L2 not charging, L1 ok

Sun Jan 08, 2012 9:55 am

Yeah, you need your charger replaced. The diode went out in mine, I had the same problem and they had to replace the charger in my car. I'm in TN and I was second to have this problem. Walsh in WA was the first and he help to solve this problem and made it easier for me.

Jasonpara
Posts: 14
Joined: Tue Jan 25, 2011 9:52 pm

Re: L2 not charging, L1 ok

Sun Jan 08, 2012 11:03 am

By the way, does anyone know is there is a thread on here for tire problems or tire wear?

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garygid
Gold Member
Posts: 12464
Joined: Wed Apr 21, 2010 8:10 am
Delivery Date: 29 Mar 2011
Leaf Number: 000855
Location: Laguna Hills, Orange Co, CA

Re: L2 not charging, L1 ok

Sun Jan 08, 2012 11:15 am

Use the forum's "Google-type" Search (see top of page) for
tire wear
and you will get about 50 hits in many threads.
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
PU: SDG&E
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle

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