gorgo
Posts: 10
Joined: Tue Jul 07, 2020 6:11 am
Delivery Date: 07 Jul 2020

Re: LEAF CANbus decoding. (Open discussion)

Mon Mar 29, 2021 8:41 am

Hi mux, yes now We're aware about the 12V battery power drain and we're thinking how to stop the OBD2 platform to query the CANbus while it's not necessary, shutting it down.

Btw, I'm well aware about this thread and I read it all, but you shall also know that 2018+ Leaf info are missing since the gateway added with 2018 model.
You're suggesting to connect to the regular CAN bus instead of the OBD2 port, but I haven't found any wiring information about how 2018+ are working now. OLD models shared different buses on other OBD pins (EVCan, QCcan, CARcan etc) but this apparently isn't true anymore.
So querying the gateway with 7XX IDs seems the only way to get Leaf's variables.

lorenfb
Posts: 2511
Joined: Tue Dec 17, 2013 10:53 pm
Delivery Date: 22 Nov 2013
Leaf Number: 416635
Location: SoCal

Re: LEAF CANbus decoding. (Open discussion)

Mon Mar 29, 2021 9:33 am

gorgo wrote:
Mon Mar 29, 2021 8:41 am
Hi mux, yes now We're aware about the 12V battery power drain and we're thinking how to stop the OBD2 platform to query the CANbus while it's not necessary, shutting it down.

Btw, I'm well aware about this thread and I read it all, but you shall also know that 2018+ Leaf info are missing since the gateway added with 2018 model.
You're suggesting to connect to the regular CAN bus instead of the OBD2 port, but I haven't found any wiring information about how 2018+ are working now. OLD models shared different buses on other OBD pins (EVCan, QCcan, CARcan etc) but this apparently isn't true anymore.
So querying the gateway with 7XX IDs seems the only way to get Leaf's variables.
Typical for most all late ICEVs with many ECUs with multiple CANs, i.e. a central gateway ECU from the OBDII connector.
#1 Leaf SL MY 9/13: 76K miles, 47 Ahrs, 5.0 miles/kWh (average), Hx=70, SOH=73, L2 - 100% > 1000, temp < 95F, (DOD) > 20 Ahrs
#2 Leaf SL MY 12/18: 10.3K miles, SOH 109Ahrs/115Ahrs, 5.2 miles/kWh (average), DOD > 20%, temp < 105F

gorgo
Posts: 10
Joined: Tue Jul 07, 2020 6:11 am
Delivery Date: 07 Jul 2020

Re: LEAF CANbus decoding. (Open discussion)

Mon Mar 29, 2021 9:46 am

lorenfb wrote: Typical for most all late ICEVs with many ECUs with multiple CANs, i.e. a central gateway ECU from the OBDII connector.
Exactly, so I guess the only access is by querying the gateway or get single bus data behind the gateway, but I don't even know where to start checking those wires without taking the dashboard apart.

User avatar
Dala
Posts: 340
Joined: Sun Oct 28, 2018 11:24 am
Delivery Date: 01 Jan 2015
Leaf Number: 316851
Location: Finland
Contact: Website

Re: LEAF CANbus decoding. (Open discussion)

Mon Mar 29, 2021 11:38 am

gorgo wrote:
Mon Mar 29, 2021 8:41 am
Hi mux, yes now We're aware about the 12V battery power drain and we're thinking how to stop the OBD2 platform to query the CANbus while it's not necessary, shutting it down.

Btw, I'm well aware about this thread and I read it all, but you shall also know that 2018+ Leaf info are missing since the gateway added with 2018 model.
You're suggesting to connect to the regular CAN bus instead of the OBD2 port, but I haven't found any wiring information about how 2018+ are working now. OLD models shared different buses on other OBD pins (EVCan, QCcan, CARcan etc) but this apparently isn't true anymore.
So querying the gateway with 7XX IDs seems the only way to get Leaf's variables.
EV-CAN is located in the same place on ZE1 as on AZE0. Check this video for where to find it https://youtu.be/eLcNSo2Vn6U?t=78

User avatar
Dala
Posts: 340
Joined: Sun Oct 28, 2018 11:24 am
Delivery Date: 01 Jan 2015
Leaf Number: 316851
Location: Finland
Contact: Website

Re: LEAF CANbus decoding. (Open discussion)

Tue Jul 20, 2021 1:00 am

Did some CAN manipulation last night with my battery upgraded LEAF. Was kinda funny to see what the QC station did when SOC% went down during charge 😂

https://youtu.be/5Kts6c3ws40

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