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ab475245
Where is pin RC3 on OVMS? EV-CAN activation signal for ZE0 Leafs

Does anyone have a clue what "Wire RC3 to TCU pin 11" means in the context of getting air conditioning via OVMS to work in a 2011-2013 Nissan Leaf?

https://docs.openvehicles.com/en/latest/components/vehicle_nissanleaf/docs/#models-ze0

I understand what is meant by TCU pin 11, but where is RC3? It doesn't appear anywhere in the schematic. https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/hardware/v3.2/Mainboard_SCH_v3.2_20190610.pdf

ab475245
What's extra strange is that

What's extra strange is that the remote air conditioning activation worked initially, before I checked to "allow CAN writes," but now doesn't work at all no matter whether writes are enabled or not.

pomnz
Out of Date instructions

From what I can tell, the instructions are for ovms 1 or 2, not 3

from what I have read the EV system activation request signal needs to be connected to 12v to wake the system up

There is an option in the config under autostart: "Enable to provide 12V to external devices connected to the module (i.e. ECU displays).", so ovms v3 does have 12v out, though im not sure which pin.

You would need a wire from the 12v out to tcu pin 11, and probably a script to toggle the 12v when it sends the activation signal

remote climate control does still work without it, but only when the car is awake, so plugged in and charging, unfortunely it will go to sleep after it finishes charging, so you cant just leave it plugged in and then tell it to preheat if you decide your going somewhere.

It would be great if up to date instructions were posted, it would be great to be able use remote climate control properly

forester
forester's picture
RE : Out of Date instructions

I don't know what RC3 is,but the ovms v3 module has two 12 v pins in the DA26 ( DIAG ) connector ( page 61 of 'Open Vehicles user guide' : https://docs.openvehicles.com/en/latest/userguide/egpio.html )

Based on my testing,the EXT_12v pin provides 12v. if the module receives them from the DB9 ( vehicle ) connector.

The SW_12v pin is not connected to the EXT_12V pin.

The SW_12v pin is controlled with the commands:
power ext12v [ status | off | on ]
or:
egpio output 1 [ 0 | 1 ]

The command 'power ext12v' modifies the status of the egpio output 1
But the command 'egpio output 1' does not modify the status of 'power ext12v'

[ Firmware : 3.2.013/ota_0/main (build idf v3.3-beta3-775-gdc1ca69 May 31 2020 17:27:06) ]

Silvlink
Climate control

I just got my module in the mail. I was able to get OVMS working with a sim card installed. Currently, I'm able to turn the climate control on and off using the Homelink button. number one turns it on and number 2 turns it off. It works so much faster than Nissan connect. Does anyone know the full set of futures that should be available for the 2013? 

2013 Nissan leaf SL with 40Kw battery.

Silvlink
Climate control

I just got my module in the mail. I was able to get OVMS working with a sim card installed. Currently, I'm able to turn the climate control on and off using the Homelink button. number one turns it on and number 2 turns it off. It works so much faster than Nissan connect. Does anyone know the full set of futures that should be available for the 2013? 

2013 Nissan leaf SL with 40Kw battery.

loseby
Activation signal not supported in current OVMS

According to the code in the current OVMS v3 firmware, there is no support for "RC3" aka GPIO3 to send a wake-up signal. That section of code is commented out:

// Use GPIO to wake up GEN 1 Leaf with EV SYSTEM ACTIVATION REQUEST
// TODO re-implement to support Gen 1 leaf
//output_gpo3(TRUE);

This is a bummer. My current workaround is to turn off then on my EVSE remotely, which wakes up the car for a minute. Then I can successfully issue start charging or climate control commands.

achatzii
Activation signal for Leaf 2011.

Today I installed the OVMS for my 2011 Leaf, and the remote AC is working without any changes to the car. Simply unplug the TCU, and you are good to go. You can turn on/off the AC with Homelink1/Homelink2 buttons, or with the AC icon on the user interface. I believe that the vehicle should be plugged in for this to work.

 

Arion._

clnpwr
Running OVMS on 2011 Leaf.

Running OVMS on 2011 Leaf. Since "RC3" isn't available any more I took [forester] idea a bit further and managed to get a wakeup signal to the car by running a wire from pin 18 (SW_12V) of the diagnostics port on OVMS to pin 11 on the large white plug that used to go into the old TCU. To wakeup the car I just need to send the message "power ext12v on" through the OVMS App and then use Homelink 1 button to turn on the AC. Shortly after that I send the message "power ext12v off" to cut the 12v signal.

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