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: 2522
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: 364
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: 364
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

matchett808
Posts: 30
Joined: Tue Mar 23, 2021 1:57 pm
Delivery Date: 23 Mar 2020

Re: LEAF CANbus decoding. (Open discussion)

Wed Aug 04, 2021 2:27 pm

Hi all,

If I've got the following canbus message (captured from OVMS):

Code: Select all

1628110867.143809 2R11 215 ff f0 ff 00 ff ff
Am I right in thinking that this is indicating my AC compressor is on? (as per the canmsgs.xlsx SS - PID is 215 _i think_ and byte 'B' is F0

I'm first of all checking if I have that correct - and also to check - I don't think I should see that when the car is off?

mafify
Posts: 16
Joined: Fri Sep 03, 2021 3:53 pm
Delivery Date: 03 Sep 2018

Re: LEAF CANbus decoding. (Open discussion)

Wed Sep 22, 2021 10:32 pm

Hello, guys any updates on how to update the SOC. Any other solutions other than reload the BMS with the +12

nlspace
Posts: 507
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: LEAF CANbus decoding. (Open discussion)

Thu Sep 23, 2021 8:38 am

delete
Last edited by nlspace on Thu Sep 23, 2021 3:53 pm, edited 2 times in total.

mafify
Posts: 16
Joined: Fri Sep 03, 2021 3:53 pm
Delivery Date: 03 Sep 2018

Re: LEAF CANbus decoding. (Open discussion)

Thu Sep 23, 2021 10:22 am

nlspace wrote:
Thu Sep 23, 2021 8:38 am
mafify wrote:
Wed Sep 22, 2021 10:32 pm
Any other solutions other than reload the BMS with the +12
Why would anyone want to do this--not honest.
I am trying to get reading for the battery alone, not connected to vehicle and as stated in the discussion thread, SOC doesn't update by itself. I need to turn the +IGN and +12 off and on to recalculate the SOC. I was just wondering if anyone figured out what is the heartbeat msg that the back take to keep alive and keep updating SOC

nlspace
Posts: 507
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: LEAF CANbus decoding. (Open discussion)

Thu Sep 23, 2021 3:51 pm

Sorry i thought you were talking about reset the BMS to 12 bars SOH.

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