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Re: L2 not charging, L1 ok

Posted: Sun Jan 01, 2012 10:41 pm
by DarkStar
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.

Re: L2 not charging, L1 ok

Posted: Mon Jan 02, 2012 2:27 pm
by pjoseph
L2 charging failed again after working for just one day. Back to square one. Plan on taking it to the dealer tomorrow.

Re: L2 not charging, L1 ok

Posted: Wed Jan 04, 2012 11:13 am
by pjoseph
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).

Re: L2 not charging, L1 ok

Posted: Wed Jan 04, 2012 2:30 pm
by garygid
I would be a shame if the diode blowing (or shorting?) requires
a whole new, non-noisy Charger to be installed into your LEAF.

Re: L2 not charging, L1 ok

Posted: Wed Jan 04, 2012 2:37 pm
by abasile
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:

Re: L2 not charging, L1 ok

Posted: Fri Jan 06, 2012 8:27 pm
by hill
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:

Re: L2 not charging, L1 ok

Posted: Fri Jan 06, 2012 9:44 pm
by garygid
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.

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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.

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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.

Re: L2 not charging, L1 ok

Posted: Sun Jan 08, 2012 9:55 am
by Jasonpara
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.

Re: L2 not charging, L1 ok

Posted: Sun Jan 08, 2012 11:03 am
by Jasonpara
By the way, does anyone know is there is a thread on here for tire problems or tire wear?

Re: L2 not charging, L1 ok

Posted: Sun Jan 08, 2012 11:15 am
by garygid
Use the forum's "Google-type" Search (see top of page) for
tire wear
and you will get about 50 hits in many threads.