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<p>Hi Mark,</p>
<p>I haven't had a chance to look at a 2018 Leaf in detail. I have
plugged an OVMS into one and it didn't work.<br>
</p>
<p>Looking at that PDF, it would seem that Nissan have split the CAN
bus into sections, with the DATA LINK CONNECTOR (aka OBD2 port)
being connected to the bus via 6CH CAN GATEWAY. The gateway
appears to be connected to all (most?) the CAN busses on the car.
The TCU and Navigation system are on a new bus, connected only to
each other and the 6CH CAN GATEWAY.</p>
Browsing the LeafSpy support forums, it looks like the 2018 leaf
doesn't stream any data to the OBD2 port, so everything will have to
be obtained by polling. It sounds like LeafSpy does work on the 2018
leaf so it's possible to get the data we want, but nearly everything
in the OVMS's Leaf support uses passive monitoring of data streamed
out of the OBD2 port which won't work on the 2018 Leaf. I would be
surprised if remote climate control works via the OBD2 port as the
gateway is unlikely to forward a TCU message received from the OBD2
port to the correct destination(s). Getting that to work will likely
need a cable between the OVMS's external expansion socket and the
TCU's CAN bus.<br>
<br>
I haven't checked the pinouts but I expect the Leaf specific OVMS
cable can be made to work with the 2018 Leaf, but a standard cable
would work better (connecting the only CAN bus on the OBD2 port to
the fastest CAN hardware on the OVMS). The current Leaf firmware
won't work very well at all on a 2018 Leaf, regardless of which
cable you have.<br>
<br>
<div class="moz-cite-prefix">On 25/06/18 13:55, Mark Webb-Johnson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:3B8A75B0-2794-424D-A962-051147B6195C@webb-johnson.net">
<pre wrap="">I got this enquiry regarding the cable for the 2018 Nissan Leaf.
It seems that the OBDII pinout has changed? Anyone know anything about this?
Regards, Mark.
</pre>
<blockquote type="cite">
<pre wrap="">Begin forwarded message:
...But if this is correct, it will probably not work on the 2018 Nissan Leaf, because ODB2-Pins 12 and 13 are not assigned (see the image from the service manual attached - page 17) and when I take a look at the connector I can clearly see, that 12 and 13 have no metal clip - no electrical connection possible.
Do I have to - somehow - connect the OVMS to the CAN Bus the TCU is connected to?
Or do I have to select something special in the web-interface of the OVMS module, like the model-year?
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