[Ovmsdev] Activating a sleeping Gen 1 Leaf

Tom Parker tom at carrott.org
Wed Mar 16 02:59:11 HKT 2016

Can you share a capture of a Carwings wakeup on a Gen2? 
says you send message 68c and 
http://www.mynissanleaf.com/viewtopic.php?p=438109#p438109 says you send 
message 68. I'm guessing the former is correct. Neither say what the gap 
between the messages should be.

What do people use to analyze can bus captures? I've started writing a 
wireshark dissector for the leaf ev can bus which is making the messages 
easier to understand and hence the OVMS code easier to write. Of course 
I had to learn lua to do that, but hopefully it will help others too. 
I'll push it to a repo shortly.

Do you happen to know if there is there a better reference for what the 
messages mean than 
? I've looked at various forum threads but the information is spread 
very thinly through the discussion. Other project's firmware is a little 
more information dense but harder to extract.

On 03/13/2016 02:16 AM, Collin Kidder wrote:
> The Gen2 does wake up based on a CAN message. I have captures that
> show that message being the very first thing over the wire and then
> the car wakes up and a ton of messages begin to flow. But, I haven't
> tried directly injecting that message to see if I can wake the car up
> via the message. It is, however, supposed to work that way. I'll give
> it a try when I get a chance.
> I actually have both a 2012 and 2013 Leaf so I can do tests for
> differences. I'll get a capture from both and compare to see if there
> is a good way to distinguish the two over CAN. The CAN data decoded on
> mynissanleaf shows things that only exist in one or the other so it
> should be very possible to figure out which one you're in.
> On Wed, Mar 9, 2016 at 4:35 AM, Tom Parker <tom at carrott.org> wrote:
>> Quick update,
>> I contorted myself into the driver's foot well of my right hand drive
>> Japanese domestic manufacture 2012 gen 1 Leaf and unplugged the TCU. I can
>> confirm that connecting pin 1 (battery +ve) to pin 11 (EV System Activation
>> Request) causes a beep from the front of the car and a few relay clicks. I
>> didn't try to activate climate control to confirm that it works, I'll try
>> that later this week and if it does, hook it up to the OVMS. Splice into the
>> loom in the cramped conditions under the dashboard won't be fun. I wouldn't
>> be totally surprised if the TCU does the charge timer wakeup, so preserving
>> the existing circuit is a good idea.
>> http://www.mynissanleaf.com/viewtopic.php?p=438109#p438109 says the Gen 2
>> Leaf doesn't need this circuit, and the same source describes CAN message to
>> do the wakeup. If anyone wants to test that I can add that message to see if
>> it works.
>> Has anyone seen a message on the EV CAN Bus that would distinguish a Gen 1
>> from a Gen 2?
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