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So for my e46 build my plan was to use a gasoline Webasto heater. However I managed to squeeze in allot bigger battery than what was first planned which meant that the reduced range by electric heating would have a smaller impact on usability.
Purchased a PTC heater from a 2015 renault zoe which is almost identical to the leaf/E-NV200 one.
Haven't measured the resistance yet but I'm seeing numbers like 1.8kw on the web. Looks like it operates together with a heat pump and only turns on when temperature gets below -5 and the pump doesn't produce heat . Also for defrosting.

Hardware: HV connector, APEX HV280.
LV pinout: nc-nc-LIN-(neg)-nc-(+12v)

Im trying to control it via LIN and thanks to the link and code below been able to communicate.
https://ev-olution.yolasite.com/nissan- ... roller.php So on ID 0x24 I get a response just as ev-olution. Without HV I got 0xCA, 0x00, 0xFE, 0xEE
With HV(280v) and trying to turn it on by sending byte[2] = 10 on ID 0x3B the response on ID 0x24 is 0xCA, 0x80, 0xFE, 0xEE. After that byte[1] on 0x24 seems to be stuck on 0x80.
No response on voltage or temperature change.

I have shorted the HVIL for testing. Could it require a certain resistance instead of a short? Anyone that has done LIN sniffing on their ZOE?

HVIL often is a low (mA) current chain. If the chain is broken HVIL protection activates. Dig in the HVIL implementation of the Zoe. It might be a case of a 4mA current loop. (So connect GND and a resistor and 5volt so you get 5mA.

Interesting. Worth a try. Measured between HV neg and one of the HVIL cables and got 12kohm. Doesn't make a low current chain improbable if its isolated I guess.

On my Webasto unit interlock was just two shorted pins. Likewise on the Leaf service disconnect, the HV outputs and the A/C compressor. I guess some "interlock master" does indeed put a signal on this daisy chain (in case of the BMS it is actually a square wave) and if the signal doesn't return it knows that one of the HV connectors is unplugged and can react appropriately, e.g. by opening the main battery realays.

Ran 4mA across the HVIL. Required 2.5V which seems resonable. Made no difference. Maybe it needs a combo of that and a signal generated from a master as you describe Johu. I doubt it however.
Here is the code I have been testing with.

Hi, has anyone been able to figure out the polarity of the HV connector of the Leaf ptc heater 27143-3NF1A?
Even it is resistive load, I guess, the polarity matters.

Many thanks!

How is the heat intensity controlled and where is it done?

EV_Builder wrote: ↑Sun Jun 12, 2022 4:21 pm How is the heat intensity controlled and where is it done?

Trying to mimic the work shown at link (https://ev-olution.yolasite.com/nissan- ... roller.php). I only have 170V dc available at home now and feels the heater is not working with that. I keep trying…

Polarity sorted out here: